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comparison sd_raw_config.h @ 19:5f9a40d6991b

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Import SD handling from http://www.roland-riegel.de/sd-reader/index.html Use smaller build options
author Matt Johnston <matt@ucc.asn.au>
date Tue, 25 Jun 2013 13:55:11 +0800
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children 9e888708f33d
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18:021e6e0006f4 19:5f9a40d6991b
1
2 /*
3 * Copyright (c) 2006-2012 by Roland Riegel <[email protected]>
4 *
5 * This file is free software; you can redistribute it and/or modify
6 * it under the terms of either the GNU General Public License version 2
7 * or the GNU Lesser General Public License version 2.1, both as
8 * published by the Free Software Foundation.
9 */
10
11 #ifndef SD_RAW_CONFIG_H
12 #define SD_RAW_CONFIG_H
13
14 #include <stdint.h>
15
16 #ifdef __cplusplus
17 extern "C"
18 {
19 #endif
20
21 /**
22 * \addtogroup sd_raw
23 *
24 * @{
25 */
26 /**
27 * \file
28 * MMC/SD support configuration (license: GPLv2 or LGPLv2.1)
29 */
30
31 /**
32 * \ingroup sd_raw_config
33 * Controls MMC/SD write support.
34 *
35 * Set to 1 to enable MMC/SD write support, set to 0 to disable it.
36 */
37 #define SD_RAW_WRITE_SUPPORT 1
38
39 /**
40 * \ingroup sd_raw_config
41 * Controls MMC/SD write buffering.
42 *
43 * Set to 1 to buffer write accesses, set to 0 to disable it.
44 *
45 * \note This option has no effect when SD_RAW_WRITE_SUPPORT is 0.
46 */
47 #define SD_RAW_WRITE_BUFFERING 1
48
49 /**
50 * \ingroup sd_raw_config
51 * Controls MMC/SD access buffering.
52 *
53 * Set to 1 to save static RAM, but be aware that you will
54 * lose performance.
55 *
56 * \note When SD_RAW_WRITE_SUPPORT is 1, SD_RAW_SAVE_RAM will
57 * be reset to 0.
58 */
59 #define SD_RAW_SAVE_RAM 0
60
61 /**
62 * \ingroup sd_raw_config
63 * Controls support for SDHC cards.
64 *
65 * Set to 1 to support so-called SDHC memory cards, i.e. SD
66 * cards with more than 2 gigabytes of memory.
67 */
68 #define SD_RAW_SDHC 1
69
70 /**
71 * @}
72 */
73
74 /* defines for customisation of sd/mmc port access */
75 #if defined(__AVR_ATmega8__) || \
76 defined(__AVR_ATmega48__) || \
77 defined(__AVR_ATmega48P__) || \
78 defined(__AVR_ATmega88__) || \
79 defined(__AVR_ATmega88P__) || \
80 defined(__AVR_ATmega168__) || \
81 defined(__AVR_ATmega168P__) || \
82 defined(__AVR_ATmega328P__)
83 #define configure_pin_mosi() DDRB |= (1 << DDB3)
84 #define configure_pin_sck() DDRB |= (1 << DDB5)
85 #define configure_pin_ss() DDRB |= (1 << DDB2)
86 #define configure_pin_miso() DDRB &= ~(1 << DDB4)
87
88 #define select_card() PORTB &= ~(1 << PORTB2)
89 #define unselect_card() PORTB |= (1 << PORTB2)
90 #elif defined(__AVR_ATmega16__) || \
91 defined(__AVR_ATmega32__)
92 #define configure_pin_mosi() DDRB |= (1 << DDB5)
93 #define configure_pin_sck() DDRB |= (1 << DDB7)
94 #define configure_pin_ss() DDRB |= (1 << DDB4)
95 #define configure_pin_miso() DDRB &= ~(1 << DDB6)
96
97 #define select_card() PORTB &= ~(1 << PORTB4)
98 #define unselect_card() PORTB |= (1 << PORTB4)
99 #elif defined(__AVR_ATmega64__) || \
100 defined(__AVR_ATmega128__) || \
101 defined(__AVR_ATmega169__)
102 #define configure_pin_mosi() DDRB |= (1 << DDB2)
103 #define configure_pin_sck() DDRB |= (1 << DDB1)
104 #define configure_pin_ss() DDRB |= (1 << DDB0)
105 #define configure_pin_miso() DDRB &= ~(1 << DDB3)
106
107 #define select_card() PORTB &= ~(1 << PORTB0)
108 #define unselect_card() PORTB |= (1 << PORTB0)
109 #else
110 #error "no sd/mmc pin mapping available!"
111 #endif
112
113 #define configure_pin_available() DDRC &= ~(1 << DDC4)
114 #define configure_pin_locked() DDRC &= ~(1 << DDC5)
115
116 #define get_pin_available() (PINC & (1 << PINC4))
117 #define get_pin_locked() (PINC & (1 << PINC5))
118
119 #if SD_RAW_SDHC
120 typedef uint64_t offset_t;
121 #else
122 typedef uint32_t offset_t;
123 #endif
124
125 /* configuration checks */
126 #if SD_RAW_WRITE_SUPPORT
127 #undef SD_RAW_SAVE_RAM
128 #define SD_RAW_SAVE_RAM 0
129 #else
130 #undef SD_RAW_WRITE_BUFFERING
131 #define SD_RAW_WRITE_BUFFERING 0
132 #endif
133
134 #ifdef __cplusplus
135 }
136 #endif
137
138 #endif
139