pihelp: sd_raw.c annotate

annotate sd_raw.c @ 41:d07aa7644c66

bit more fiddling

author	Matt Johnston <matt@ucc.asn.au>
date	Fri, 28 Jun 2013 23:16:00 +0800
parents	9e888708f33d
children	2a47c458d6ed

rev	line source
19 5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	2 /*
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 * Copyright (c) 2006-2012 by Roland Riegel <[email protected]>
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	4 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 * This file is free software; you can redistribute it and/or modify
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	6 * it under the terms of either the GNU General Public License version 2
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	7 * or the GNU Lesser General Public License version 2.1, both as
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 * published by the Free Software Foundation.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	9 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	10
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11 #include <string.h>
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12 #include <avr/io.h>
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	13 #include "sd_raw.h"
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	14
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16 * \addtogroup sd_raw MMC/SD/SDHC card raw access
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 * This module implements read and write access to MMC, SD
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	19 * and SDHC cards. It serves as a low-level driver for the
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20 * higher level modules such as partition and file system
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	21 * access.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	22 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	23 * @{
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	24 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 * \file
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 * MMC/SD/SDHC raw access implementation (license: GPLv2 or LGPLv2.1)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 * \author Roland Riegel
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 * \addtogroup sd_raw_config MMC/SD configuration
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 * Preprocessor defines to configure the MMC/SD support.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	36
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	37 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	38 * @}
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41 /* commands available in SPI mode */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	43 /* CMD0: response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 #define CMD_GO_IDLE_STATE 0x00
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45 /* CMD1: response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 #define CMD_SEND_OP_COND 0x01
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 /* CMD8: response R7 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 #define CMD_SEND_IF_COND 0x08
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 /* CMD9: response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50 #define CMD_SEND_CSD 0x09
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51 /* CMD10: response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52 #define CMD_SEND_CID 0x0a
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	53 /* CMD12: response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	54 #define CMD_STOP_TRANSMISSION 0x0c
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	55 /* CMD13: response R2 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	56 #define CMD_SEND_STATUS 0x0d
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	57 /* CMD16: arg0[31:0]: block length, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	58 #define CMD_SET_BLOCKLEN 0x10
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	59 /* CMD17: arg0[31:0]: data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	60 #define CMD_READ_SINGLE_BLOCK 0x11
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	61 /* CMD18: arg0[31:0]: data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	62 #define CMD_READ_MULTIPLE_BLOCK 0x12
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	63 /* CMD24: arg0[31:0]: data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64 #define CMD_WRITE_SINGLE_BLOCK 0x18
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	65 /* CMD25: arg0[31:0]: data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	66 #define CMD_WRITE_MULTIPLE_BLOCK 0x19
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	67 /* CMD27: response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	68 #define CMD_PROGRAM_CSD 0x1b
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69 /* CMD28: arg0[31:0]: data address, response R1b */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70 #define CMD_SET_WRITE_PROT 0x1c
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71 /* CMD29: arg0[31:0]: data address, response R1b */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	72 #define CMD_CLR_WRITE_PROT 0x1d
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	73 /* CMD30: arg0[31:0]: write protect data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	74 #define CMD_SEND_WRITE_PROT 0x1e
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75 /* CMD32: arg0[31:0]: data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	76 #define CMD_TAG_SECTOR_START 0x20
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	77 /* CMD33: arg0[31:0]: data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	78 #define CMD_TAG_SECTOR_END 0x21
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	79 /* CMD34: arg0[31:0]: data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	80 #define CMD_UNTAG_SECTOR 0x22
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	81 /* CMD35: arg0[31:0]: data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	82 #define CMD_TAG_ERASE_GROUP_START 0x23
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83 /* CMD36: arg0[31:0]: data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	84 #define CMD_TAG_ERASE_GROUP_END 0x24
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85 /* CMD37: arg0[31:0]: data address, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86 #define CMD_UNTAG_ERASE_GROUP 0x25
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 /* CMD38: arg0[31:0]: stuff bits, response R1b */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88 #define CMD_ERASE 0x26
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 /* ACMD41: arg0[31:0]: OCR contents, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90 #define CMD_SD_SEND_OP_COND 0x29
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91 /* CMD42: arg0[31:0]: stuff bits, response R1b */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	92 #define CMD_LOCK_UNLOCK 0x2a
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93 /* CMD55: arg0[31:0]: stuff bits, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	94 #define CMD_APP 0x37
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	95 /* CMD58: arg0[31:0]: stuff bits, response R3 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96 #define CMD_READ_OCR 0x3a
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 /* CMD59: arg0[31:1]: stuff bits, arg0[0:0]: crc option, response R1 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	98 #define CMD_CRC_ON_OFF 0x3b
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	99
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 /* command responses */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101 /* R1: size 1 byte */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102 #define R1_IDLE_STATE 0
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	103 #define R1_ERASE_RESET 1
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	104 #define R1_ILL_COMMAND 2
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	105 #define R1_COM_CRC_ERR 3
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	106 #define R1_ERASE_SEQ_ERR 4
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	107 #define R1_ADDR_ERR 5
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	108 #define R1_PARAM_ERR 6
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	109 /* R1b: equals R1, additional busy bytes */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	110 /* R2: size 2 bytes */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	111 #define R2_CARD_LOCKED 0
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	112 #define R2_WP_ERASE_SKIP 1
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	113 #define R2_ERR 2
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	114 #define R2_CARD_ERR 3
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	115 #define R2_CARD_ECC_FAIL 4
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	116 #define R2_WP_VIOLATION 5
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	117 #define R2_INVAL_ERASE 6
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	118 #define R2_OUT_OF_RANGE 7
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	119 #define R2_CSD_OVERWRITE 7
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	120 #define R2_IDLE_STATE (R1_IDLE_STATE + 8)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	121 #define R2_ERASE_RESET (R1_ERASE_RESET + 8)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	122 #define R2_ILL_COMMAND (R1_ILL_COMMAND + 8)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	123 #define R2_COM_CRC_ERR (R1_COM_CRC_ERR + 8)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	124 #define R2_ERASE_SEQ_ERR (R1_ERASE_SEQ_ERR + 8)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	125 #define R2_ADDR_ERR (R1_ADDR_ERR + 8)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	126 #define R2_PARAM_ERR (R1_PARAM_ERR + 8)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	127 /* R3: size 5 bytes */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	128 #define R3_OCR_MASK (0xffffffffUL)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	129 #define R3_IDLE_STATE (R1_IDLE_STATE + 32)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	130 #define R3_ERASE_RESET (R1_ERASE_RESET + 32)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	131 #define R3_ILL_COMMAND (R1_ILL_COMMAND + 32)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	132 #define R3_COM_CRC_ERR (R1_COM_CRC_ERR + 32)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	133 #define R3_ERASE_SEQ_ERR (R1_ERASE_SEQ_ERR + 32)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	134 #define R3_ADDR_ERR (R1_ADDR_ERR + 32)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	135 #define R3_PARAM_ERR (R1_PARAM_ERR + 32)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	136 /* Data Response: size 1 byte */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	137 #define DR_STATUS_MASK 0x0e
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138 #define DR_STATUS_ACCEPTED 0x05
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	139 #define DR_STATUS_CRC_ERR 0x0a
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140 #define DR_STATUS_WRITE_ERR 0x0c
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	142 /* status bits for card types */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143 #define SD_RAW_SPEC_1 0
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144 #define SD_RAW_SPEC_2 1
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145 #define SD_RAW_SPEC_SDHC 2
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	147 #if !SD_RAW_SAVE_RAM
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148 /* static data buffer for acceleration */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 static uint8_t raw_block[512];
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	150 /* offset where the data within raw_block lies on the card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151 static offset_t raw_block_address;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152 #if SD_RAW_WRITE_BUFFERING
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	153 /* flag to remember if raw_block was written to the card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154 static uint8_t raw_block_written;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	155 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	158 /* card type state */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159 static uint8_t sd_raw_card_type;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	161 /* private helper functions */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162 static void sd_raw_send_byte(uint8_t b);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163 static uint8_t sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	164 static uint8_t sd_raw_send_command(uint8_t command, uint32_t arg);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	166 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	167 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168 * Initializes memory card communication.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	169 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	170 * \returns 0 on failure, 1 on success.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	171 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	172 uint8_t sd_raw_init()
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	173 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	174 /* enable inputs for reading card status */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	175 configure_pin_available();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	176 configure_pin_locked();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	177
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	178 /* enable outputs for MOSI, SCK, SS, input for MISO */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	179 configure_pin_mosi();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	180 configure_pin_sck();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	181 configure_pin_ss();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182 configure_pin_miso();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	184 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	185
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	186 /* initialize SPI with lowest frequency; max. 400kHz during identification mode of card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	187 SPCR = (0 << SPIE) \| /* SPI Interrupt Enable */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	188 (1 << SPE) \| /* SPI Enable */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	189 (0 << DORD) \| /* Data Order: MSB first */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	190 (1 << MSTR) \| /* Master mode */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	191 (0 << CPOL) \| /* Clock Polarity: SCK low when idle */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	192 (0 << CPHA) \| /* Clock Phase: sample on rising SCK edge */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193 (1 << SPR1) \| /* Clock Frequency: f_OSC / 128 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	194 (1 << SPR0);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195 SPSR &= ~(1 << SPI2X); /* No doubled clock frequency */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	196
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	197 /* initialization procedure */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	198 sd_raw_card_type = 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	199
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	200 if(!sd_raw_available())
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	201 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	202
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	203 /* card needs 74 cycles minimum to start up */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	204 for(uint8_t i = 0; i < 10; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	205 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	206 /* wait 8 clock cycles */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	207 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	208 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	209
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	210 /* address card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	211 select_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	212
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	213 /* reset card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 uint8_t response;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215 for(uint16_t i = 0; ; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	216 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	217 response = sd_raw_send_command(CMD_GO_IDLE_STATE, 0);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	218 if(response == (1 << R1_IDLE_STATE))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	219 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	220
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	221 if(i == 0x1ff)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	222 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	223 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	224 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	225 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	226 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	227
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	228 #if SD_RAW_SDHC
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	229 /* check for version of SD card specification */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	230 response = sd_raw_send_command(CMD_SEND_IF_COND, 0x100 /* 2.7V - 3.6V / \| 0xaa / test pattern */);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	231 if((response & (1 << R1_ILL_COMMAND)) == 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	232 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	234 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	235 if((sd_raw_rec_byte() & 0x01) == 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	236 return 0; /* card operation voltage range doesn't match */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	237 if(sd_raw_rec_byte() != 0xaa)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	238 return 0; /* wrong test pattern */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	239
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240 /* card conforms to SD 2 card specification */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	241 sd_raw_card_type \|= (1 << SD_RAW_SPEC_2);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243 else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	244 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	246 /* determine SD/MMC card type */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	247 sd_raw_send_command(CMD_APP, 0);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	248 response = sd_raw_send_command(CMD_SD_SEND_OP_COND, 0);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	249 if((response & (1 << R1_ILL_COMMAND)) == 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	250 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	251 /* card conforms to SD 1 card specification */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	252 sd_raw_card_type \|= (1 << SD_RAW_SPEC_1);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	253 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	254 else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	255 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	256 /* MMC card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	257 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	258 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	260 /* wait for card to get ready */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	261 for(uint16_t i = 0; ; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	262 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	263 if(sd_raw_card_type & ((1 << SD_RAW_SPEC_1) \| (1 << SD_RAW_SPEC_2)))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	264 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	265 uint32_t arg = 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	266 #if SD_RAW_SDHC
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	267 if(sd_raw_card_type & (1 << SD_RAW_SPEC_2))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	268 arg = 0x40000000;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	269 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270 sd_raw_send_command(CMD_APP, 0);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	271 response = sd_raw_send_command(CMD_SD_SEND_OP_COND, arg);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	272 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	273 else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	274 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	275 response = sd_raw_send_command(CMD_SEND_OP_COND, 0);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	276 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	277
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	278 if((response & (1 << R1_IDLE_STATE)) == 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	279 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	280
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	281 if(i == 0x7fff)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	282 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	283 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	284 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	285 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	286 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	287
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	288 #if SD_RAW_SDHC
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289 if(sd_raw_card_type & (1 << SD_RAW_SPEC_2))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	291 if(sd_raw_send_command(CMD_READ_OCR, 0))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	292 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	294 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	295 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	296
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	297 if(sd_raw_rec_byte() & 0x40)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	298 sd_raw_card_type \|= (1 << SD_RAW_SPEC_SDHC);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	299
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	300 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	301 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	302 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	303 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	304 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	305
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	306 /* set block size to 512 bytes */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	307 if(sd_raw_send_command(CMD_SET_BLOCKLEN, 512))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	308 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	309 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	310 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	311 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	312
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	313 /* deaddress card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	314 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	315
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	316 /* switch to highest SPI frequency possible */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	317 SPCR &= ~((1 << SPR1) \| (1 << SPR0)); /* Clock Frequency: f_OSC / 4 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	318 SPSR \|= (1 << SPI2X); /* Doubled Clock Frequency: f_OSC / 2 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	319
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	320 #if !SD_RAW_SAVE_RAM
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	321 /* the first block is likely to be accessed first, so precache it here */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	322 raw_block_address = (offset_t) -1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	323 #if SD_RAW_WRITE_BUFFERING
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	324 raw_block_written = 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	325 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	326 if(!sd_raw_read(0, raw_block, sizeof(raw_block)))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	327 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	328 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	329
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	331 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	332
38 9e888708f33d sd test code Matt Johnston <matt@ucc.asn.au> parents: 19 diff changeset	333 void
9e888708f33d sd test code Matt Johnston <matt@ucc.asn.au> parents: 19 diff changeset	334 sd_raw_deinit(void)
9e888708f33d sd test code Matt Johnston <matt@ucc.asn.au> parents: 19 diff changeset	335 {
9e888708f33d sd test code Matt Johnston <matt@ucc.asn.au> parents: 19 diff changeset	336 configure_pin_mosi();
9e888708f33d sd test code Matt Johnston <matt@ucc.asn.au> parents: 19 diff changeset	337 configure_pin_sck();
9e888708f33d sd test code Matt Johnston <matt@ucc.asn.au> parents: 19 diff changeset	338 configure_pin_ss();
9e888708f33d sd test code Matt Johnston <matt@ucc.asn.au> parents: 19 diff changeset	339 }
9e888708f33d sd test code Matt Johnston <matt@ucc.asn.au> parents: 19 diff changeset	340
19 5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	341 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	342 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	343 * Checks wether a memory card is located in the slot.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	344 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	345 * \returns 1 if the card is available, 0 if it is not.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	346 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	347 uint8_t sd_raw_available()
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	348 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	349 return get_pin_available() == 0x00;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	350 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	351
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	352 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	353 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	354 * Checks wether the memory card is locked for write access.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	355 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	356 * \returns 1 if the card is locked, 0 if it is not.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	357 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	358 uint8_t sd_raw_locked()
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	359 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	360 return get_pin_locked() == 0x00;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	361 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	362
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	363 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	364 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	365 * Sends a raw byte to the memory card.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	366 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	367 * \param[in] b The byte to sent.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	368 * \see sd_raw_rec_byte
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	369 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	370 void sd_raw_send_byte(uint8_t b)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	371 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	372 SPDR = b;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	373 /* wait for byte to be shifted out */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	374 while(!(SPSR & (1 << SPIF)));
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	375 SPSR &= ~(1 << SPIF);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	376 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	377
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	378 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	379 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	380 * Receives a raw byte from the memory card.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	381 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	382 * \returns The byte which should be read.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	383 * \see sd_raw_send_byte
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	384 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	385 uint8_t sd_raw_rec_byte()
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	386 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	387 /* send dummy data for receiving some */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	388 SPDR = 0xff;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	389 while(!(SPSR & (1 << SPIF)));
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	390 SPSR &= ~(1 << SPIF);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	391
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	392 return SPDR;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	393 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	394
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	395 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	396 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	397 * Send a command to the memory card which responses with a R1 response (and possibly others).
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	398 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	399 * \param[in] command The command to send.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	400 * \param[in] arg The argument for command.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	401 * \returns The command answer.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	402 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	403 uint8_t sd_raw_send_command(uint8_t command, uint32_t arg)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	404 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	405 uint8_t response;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	406
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	407 /* wait some clock cycles */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	408 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	409
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	410 /* send command via SPI */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	411 sd_raw_send_byte(0x40 \| command);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	412 sd_raw_send_byte((arg >> 24) & 0xff);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	413 sd_raw_send_byte((arg >> 16) & 0xff);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	414 sd_raw_send_byte((arg >> 8) & 0xff);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	415 sd_raw_send_byte((arg >> 0) & 0xff);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	416 switch(command)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	417 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	418 case CMD_GO_IDLE_STATE:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	419 sd_raw_send_byte(0x95);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	420 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	421 case CMD_SEND_IF_COND:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	422 sd_raw_send_byte(0x87);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	423 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	424 default:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	425 sd_raw_send_byte(0xff);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	426 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	427 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	428
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	429 /* receive response */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	430 for(uint8_t i = 0; i < 10; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	431 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	432 response = sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	433 if(response != 0xff)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	434 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	435 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	436
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	437 return response;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	438 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	439
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	440 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	441 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	442 * Reads raw data from the card.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	443 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	444 * \param[in] offset The offset from which to read.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	445 * \param[out] buffer The buffer into which to write the data.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	446 * \param[in] length The number of bytes to read.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	447 * \returns 0 on failure, 1 on success.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	448 * \see sd_raw_read_interval, sd_raw_write, sd_raw_write_interval
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	449 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	450 uint8_t sd_raw_read(offset_t offset, uint8_t* buffer, uintptr_t length)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	451 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	452 offset_t block_address;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	453 uint16_t block_offset;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	454 uint16_t read_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	455 while(length > 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	456 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	457 /* determine byte count to read at once */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	458 block_offset = offset & 0x01ff;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	459 block_address = offset - block_offset;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	460 read_length = 512 - block_offset; /* read up to block border */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	461 if(read_length > length)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	462 read_length = length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	463
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	464 #if !SD_RAW_SAVE_RAM
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	465 /* check if the requested data is cached */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	466 if(block_address != raw_block_address)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	467 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	468 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	469 #if SD_RAW_WRITE_BUFFERING
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	470 if(!sd_raw_sync())
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	471 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	472 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	473
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	474 /* address card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	475 select_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	476
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	477 /* send single block request */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	478 #if SD_RAW_SDHC
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	479 if(sd_raw_send_command(CMD_READ_SINGLE_BLOCK, (sd_raw_card_type & (1 << SD_RAW_SPEC_SDHC) ? block_address / 512 : block_address)))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	480 #else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	481 if(sd_raw_send_command(CMD_READ_SINGLE_BLOCK, block_address))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	482 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	483 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	484 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	485 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	486 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	487
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	488 /* wait for data block (start byte 0xfe) */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	489 while(sd_raw_rec_byte() != 0xfe);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	490
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	491 #if SD_RAW_SAVE_RAM
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	492 /* read byte block */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	493 uint16_t read_to = block_offset + read_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	494 for(uint16_t i = 0; i < 512; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	495 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	496 uint8_t b = sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	497 if(i >= block_offset && i < read_to)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	498 *buffer++ = b;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	499 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	500 #else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	501 /* read byte block */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	502 uint8_t* cache = raw_block;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	503 for(uint16_t i = 0; i < 512; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	504 *cache++ = sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	505 raw_block_address = block_address;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	506
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	507 memcpy(buffer, raw_block + block_offset, read_length);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	508 buffer += read_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	509 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	510
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	511 /* read crc16 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	512 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	513 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	514
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	515 /* deaddress card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	516 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	517
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	518 /* let card some time to finish */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	519 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	520 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	521 #if !SD_RAW_SAVE_RAM
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	522 else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	523 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	524 /* use cached data */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	525 memcpy(buffer, raw_block + block_offset, read_length);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	526 buffer += read_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	527 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	528 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	529
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	530 length -= read_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	531 offset += read_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	532 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	533
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	534 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	535 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	536
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	537 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	538 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	539 * Continuously reads units of \c interval bytes and calls a callback function.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	540 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	541 * This function starts reading at the specified offset. Every \c interval bytes,
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	542 * it calls the callback function with the associated data buffer.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	543 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	544 * By returning zero, the callback may stop reading.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	545 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	546 * \note Within the callback function, you can not start another read or
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	547 * write operation.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	548 * \note This function only works if the following conditions are met:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	549 * - (offset - (offset % 512)) % interval == 0
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	550 * - length % interval == 0
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	551 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	552 * \param[in] offset Offset from which to start reading.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	553 * \param[in] buffer Pointer to a buffer which is at least interval bytes in size.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	554 * \param[in] interval Number of bytes to read before calling the callback function.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	555 * \param[in] length Number of bytes to read altogether.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	556 * \param[in] callback The function to call every interval bytes.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	557 * \param[in] p An opaque pointer directly passed to the callback function.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	558 * \returns 0 on failure, 1 on success
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	559 * \see sd_raw_write_interval, sd_raw_read, sd_raw_write
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	560 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	561 uint8_t sd_raw_read_interval(offset_t offset, uint8_t* buffer, uintptr_t interval, uintptr_t length, sd_raw_read_interval_handler_t callback, void* p)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	562 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	563 if(!buffer \|\| interval == 0 \|\| length < interval \|\| !callback)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	564 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	565
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	566 #if !SD_RAW_SAVE_RAM
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	567 while(length >= interval)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	568 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	569 /* as reading is now buffered, we directly
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	570 * hand over the request to sd_raw_read()
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	571 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	572 if(!sd_raw_read(offset, buffer, interval))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	573 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	574 if(!callback(buffer, offset, p))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	575 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	576 offset += interval;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	577 length -= interval;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	578 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	579
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	580 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	581 #else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	582 /* address card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	583 select_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	584
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	585 uint16_t block_offset;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	586 uint16_t read_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	587 uint8_t* buffer_cur;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	588 uint8_t finished = 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	589 do
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	590 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	591 /* determine byte count to read at once */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	592 block_offset = offset & 0x01ff;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	593 read_length = 512 - block_offset;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	594
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	595 /* send single block request */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	596 #if SD_RAW_SDHC
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	597 if(sd_raw_send_command(CMD_READ_SINGLE_BLOCK, (sd_raw_card_type & (1 << SD_RAW_SPEC_SDHC) ? offset / 512 : offset - block_offset)))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	598 #else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	599 if(sd_raw_send_command(CMD_READ_SINGLE_BLOCK, offset - block_offset))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	600 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	601 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	602 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	603 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	604 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	605
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	606 /* wait for data block (start byte 0xfe) */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	607 while(sd_raw_rec_byte() != 0xfe);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	608
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	609 /* read up to the data of interest */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	610 for(uint16_t i = 0; i < block_offset; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	611 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	612
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	613 /* read interval bytes of data and execute the callback */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	614 do
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	615 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	616 if(read_length < interval \|\| length < interval)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	617 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	618
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	619 buffer_cur = buffer;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	620 for(uint16_t i = 0; i < interval; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	621 *buffer_cur++ = sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	622
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	623 if(!callback(buffer, offset + (512 - read_length), p))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	624 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	625 finished = 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	626 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	627 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	628
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	629 read_length -= interval;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	630 length -= interval;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	631
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	632 } while(read_length > 0 && length > 0);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	633
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	634 /* read rest of data block */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	635 while(read_length-- > 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	636 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	637
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	638 /* read crc16 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	639 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	640 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	641
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	642 if(length < interval)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	643 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	644
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	645 offset = offset - block_offset + 512;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	646
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	647 } while(!finished);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	648
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	649 /* deaddress card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	650 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	651
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	652 /* let card some time to finish */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	653 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	654
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	655 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	656 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	657 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	658
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	659 #if DOXYGEN \|\| SD_RAW_WRITE_SUPPORT
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	660 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	661 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	662 * Writes raw data to the card.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	663 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	664 * \note If write buffering is enabled, you might have to
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	665 * call sd_raw_sync() before disconnecting the card
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	666 * to ensure all remaining data has been written.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	667 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	668 * \param[in] offset The offset where to start writing.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	669 * \param[in] buffer The buffer containing the data to be written.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	670 * \param[in] length The number of bytes to write.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	671 * \returns 0 on failure, 1 on success.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	672 * \see sd_raw_write_interval, sd_raw_read, sd_raw_read_interval
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	673 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	674 uint8_t sd_raw_write(offset_t offset, const uint8_t* buffer, uintptr_t length)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	675 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	676 if(sd_raw_locked())
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	677 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	678
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	679 offset_t block_address;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	680 uint16_t block_offset;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	681 uint16_t write_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	682 while(length > 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	683 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	684 /* determine byte count to write at once */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	685 block_offset = offset & 0x01ff;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	686 block_address = offset - block_offset;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	687 write_length = 512 - block_offset; /* write up to block border */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	688 if(write_length > length)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	689 write_length = length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	690
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	691 /* Merge the data to write with the content of the block.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	692 * Use the cached block if available.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	693 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	694 if(block_address != raw_block_address)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	695 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	696 #if SD_RAW_WRITE_BUFFERING
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	697 if(!sd_raw_sync())
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	698 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	699 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	700
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	701 if(block_offset \|\| write_length < 512)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	702 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	703 if(!sd_raw_read(block_address, raw_block, sizeof(raw_block)))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	704 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	705 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	706 raw_block_address = block_address;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	707 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	708
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	709 if(buffer != raw_block)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	710 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	711 memcpy(raw_block + block_offset, buffer, write_length);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	712
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	713 #if SD_RAW_WRITE_BUFFERING
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	714 raw_block_written = 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	715
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	716 if(length == write_length)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	717 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	718 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	719 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	720
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	721 /* address card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	722 select_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	723
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	724 /* send single block request */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	725 #if SD_RAW_SDHC
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	726 if(sd_raw_send_command(CMD_WRITE_SINGLE_BLOCK, (sd_raw_card_type & (1 << SD_RAW_SPEC_SDHC) ? block_address / 512 : block_address)))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	727 #else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	728 if(sd_raw_send_command(CMD_WRITE_SINGLE_BLOCK, block_address))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	729 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	730 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	731 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	732 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	733 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	734
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	735 /* send start byte */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	736 sd_raw_send_byte(0xfe);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	737
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	738 /* write byte block */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	739 uint8_t* cache = raw_block;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	740 for(uint16_t i = 0; i < 512; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	741 sd_raw_send_byte(*cache++);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	742
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	743 /* write dummy crc16 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	744 sd_raw_send_byte(0xff);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	745 sd_raw_send_byte(0xff);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	746
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	747 /* wait while card is busy */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	748 while(sd_raw_rec_byte() != 0xff);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	749 sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	750
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	751 /* deaddress card */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	752 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	753
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	754 buffer += write_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	755 offset += write_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	756 length -= write_length;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	757
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	758 #if SD_RAW_WRITE_BUFFERING
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	759 raw_block_written = 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	760 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	761 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	762
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	763 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	764 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	765 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	766
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	767 #if DOXYGEN \|\| SD_RAW_WRITE_SUPPORT
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	768 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	769 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	770 * Writes a continuous data stream obtained from a callback function.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	771 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	772 * This function starts writing at the specified offset. To obtain the
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	773 * next bytes to write, it calls the callback function. The callback fills the
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	774 * provided data buffer and returns the number of bytes it has put into the buffer.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	775 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	776 * By returning zero, the callback may stop writing.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	777 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	778 * \param[in] offset Offset where to start writing.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	779 * \param[in] buffer Pointer to a buffer which is used for the callback function.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	780 * \param[in] length Number of bytes to write in total. May be zero for endless writes.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	781 * \param[in] callback The function used to obtain the bytes to write.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	782 * \param[in] p An opaque pointer directly passed to the callback function.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	783 * \returns 0 on failure, 1 on success
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	784 * \see sd_raw_read_interval, sd_raw_write, sd_raw_read
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	785 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	786 uint8_t sd_raw_write_interval(offset_t offset, uint8_t* buffer, uintptr_t length, sd_raw_write_interval_handler_t callback, void* p)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	787 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	788 #if SD_RAW_SAVE_RAM
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	789 #error "SD_RAW_WRITE_SUPPORT is not supported together with SD_RAW_SAVE_RAM"
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	790 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	791
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	792 if(!buffer \|\| !callback)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	793 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	794
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	795 uint8_t endless = (length == 0);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	796 while(endless \|\| length > 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	797 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	798 uint16_t bytes_to_write = callback(buffer, offset, p);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	799 if(!bytes_to_write)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	800 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	801 if(!endless && bytes_to_write > length)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	802 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	803
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	804 /* as writing is always buffered, we directly
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	805 * hand over the request to sd_raw_write()
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	806 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	807 if(!sd_raw_write(offset, buffer, bytes_to_write))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	808 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	809
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	810 offset += bytes_to_write;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	811 length -= bytes_to_write;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	812 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	813
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	814 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	815 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	816 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	817
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	818 #if DOXYGEN \|\| SD_RAW_WRITE_SUPPORT
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	819 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	820 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	821 * Writes the write buffer's content to the card.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	822 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	823 * \note When write buffering is enabled, you should
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	824 * call this function before disconnecting the
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	825 * card to ensure all remaining data has been
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	826 * written.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	827 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	828 * \returns 0 on failure, 1 on success.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	829 * \see sd_raw_write
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	830 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	831 uint8_t sd_raw_sync()
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	832 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	833 #if SD_RAW_WRITE_BUFFERING
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	834 if(raw_block_written)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	835 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	836 if(!sd_raw_write(raw_block_address, raw_block, sizeof(raw_block)))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	837 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	838 raw_block_written = 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	839 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	840 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	841 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	842 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	843
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	844 /**
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	845 * \ingroup sd_raw
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	846 * Reads informational data from the card.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	847 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	848 * This function reads and returns the card's registers
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	849 * containing manufacturing and status information.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	850 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	851 * \note: The information retrieved by this function is
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	852 * not required in any way to operate on the card,
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	853 * but it might be nice to display some of the data
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	854 * to the user.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	855 *
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	856 * \param[in] info A pointer to the structure into which to save the information.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	857 * \returns 0 on failure, 1 on success.
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	858 */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	859 uint8_t sd_raw_get_info(struct sd_raw_info* info)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	860 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	861 if(!info \|\| !sd_raw_available())
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	862 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	863
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	864 memset(info, 0, sizeof(*info));
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	865
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	866 select_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	867
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	868 /* read cid register */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	869 if(sd_raw_send_command(CMD_SEND_CID, 0))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	870 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	871 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	872 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	873 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	874 while(sd_raw_rec_byte() != 0xfe);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	875 for(uint8_t i = 0; i < 18; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	876 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	877 uint8_t b = sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	878
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	879 switch(i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	880 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	881 case 0:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	882 info->manufacturer = b;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	883 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	884 case 1:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	885 case 2:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	886 info->oem[i - 1] = b;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	887 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	888 case 3:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	889 case 4:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	890 case 5:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	891 case 6:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	892 case 7:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	893 info->product[i - 3] = b;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	894 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	895 case 8:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	896 info->revision = b;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	897 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	898 case 9:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	899 case 10:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	900 case 11:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	901 case 12:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	902 info->serial \|= (uint32_t) b << ((12 - i) * 8);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	903 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	904 case 13:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	905 info->manufacturing_year = b << 4;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	906 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	907 case 14:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	908 info->manufacturing_year \|= b >> 4;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	909 info->manufacturing_month = b & 0x0f;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	910 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	911 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	912 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	913
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	914 /* read csd register */
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	915 uint8_t csd_read_bl_len = 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	916 uint8_t csd_c_size_mult = 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	917 #if SD_RAW_SDHC
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	918 uint16_t csd_c_size = 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	919 #else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	920 uint32_t csd_c_size = 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	921 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	922 uint8_t csd_structure = 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	923 if(sd_raw_send_command(CMD_SEND_CSD, 0))
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	924 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	925 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	926 return 0;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	927 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	928 while(sd_raw_rec_byte() != 0xfe);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	929 for(uint8_t i = 0; i < 18; ++i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	930 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	931 uint8_t b = sd_raw_rec_byte();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	932
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	933 if(i == 0)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	934 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	935 csd_structure = b >> 6;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	936 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	937 else if(i == 14)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	938 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	939 if(b & 0x40)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	940 info->flag_copy = 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	941 if(b & 0x20)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	942 info->flag_write_protect = 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	943 if(b & 0x10)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	944 info->flag_write_protect_temp = 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	945 info->format = (b & 0x0c) >> 2;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	946 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	947 else
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	948 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	949 #if SD_RAW_SDHC
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	950 if(csd_structure == 0x01)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	951 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	952 switch(i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	953 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	954 case 7:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	955 b &= 0x3f;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	956 case 8:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	957 case 9:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	958 csd_c_size <<= 8;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	959 csd_c_size \|= b;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	960 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	961 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	962 if(i == 9)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	963 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	964 ++csd_c_size;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	965 info->capacity = (offset_t) csd_c_size * 512 * 1024;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	966 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	967 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	968 else if(csd_structure == 0x00)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	969 #endif
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	970 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	971 switch(i)
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	972 {
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	973 case 5:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	974 csd_read_bl_len = b & 0x0f;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	975 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	976 case 6:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	977 csd_c_size = b & 0x03;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	978 csd_c_size <<= 8;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	979 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	980 case 7:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	981 csd_c_size \|= b;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	982 csd_c_size <<= 2;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	983 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	984 case 8:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	985 csd_c_size \|= b >> 6;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	986 ++csd_c_size;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	987 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	988 case 9:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	989 csd_c_size_mult = b & 0x03;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	990 csd_c_size_mult <<= 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	991 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	992 case 10:
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	993 csd_c_size_mult \|= b >> 7;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	994
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	995 info->capacity = (uint32_t) csd_c_size << (csd_c_size_mult + csd_read_bl_len + 2);
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	996 break;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	997 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	998 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	999 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1000 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1001
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1002 unselect_card();
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1003
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1004 return 1;
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1005 }
5f9a40d6991b Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1006

Mercurial > pihelp

annotate sd_raw.c @ 41:d07aa7644c66