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annotate sd_raw.h @ 37:858d5959929f

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add diagram
author Matt Johnston <matt@ucc.asn.au>
date Thu, 27 Jun 2013 18:24:24 +0800
parents 5f9a40d6991b
children 9e888708f33d
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1
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2 /*
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3 * Copyright (c) 2006-2012 by Roland Riegel <[email protected]>
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4 *
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5 * This file is free software; you can redistribute it and/or modify
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6 * it under the terms of either the GNU General Public License version 2
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7 * or the GNU Lesser General Public License version 2.1, both as
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8 * published by the Free Software Foundation.
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9 */
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10
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11 #ifndef SD_RAW_H
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12 #define SD_RAW_H
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13
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14 #include <stdint.h>
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15 #include "sd_raw_config.h"
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16
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17 #ifdef __cplusplus
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18 extern "C"
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19 {
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20 #endif
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21
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22 /**
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23 * \addtogroup sd_raw
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24 *
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25 * @{
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26 */
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27 /**
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28 * \file
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29 * MMC/SD/SDHC raw access header (license: GPLv2 or LGPLv2.1)
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30 *
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31 * \author Roland Riegel
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32 */
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33
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34 /**
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35 * The card's layout is harddisk-like, which means it contains
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36 * a master boot record with a partition table.
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37 */
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38 #define SD_RAW_FORMAT_HARDDISK 0
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39 /**
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40 * The card contains a single filesystem and no partition table.
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41 */
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42 #define SD_RAW_FORMAT_SUPERFLOPPY 1
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43 /**
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44 * The card's layout follows the Universal File Format.
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45 */
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46 #define SD_RAW_FORMAT_UNIVERSAL 2
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47 /**
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48 * The card's layout is unknown.
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49 */
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50 #define SD_RAW_FORMAT_UNKNOWN 3
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51
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52 /**
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53 * This struct is used by sd_raw_get_info() to return
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54 * manufacturing and status information of the card.
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55 */
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56 struct sd_raw_info
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57 {
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58 /**
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59 * A manufacturer code globally assigned by the SD card organization.
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60 */
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61 uint8_t manufacturer;
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62 /**
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63 * A string describing the card's OEM or content, globally assigned by the SD card organization.
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64 */
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65 uint8_t oem[3];
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66 /**
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67 * A product name.
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68 */
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69 uint8_t product[6];
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70 /**
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71 * The card's revision, coded in packed BCD.
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72 *
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73 * For example, the revision value \c 0x32 means "3.2".
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74 */
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75 uint8_t revision;
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76 /**
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77 * A serial number assigned by the manufacturer.
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78 */
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79 uint32_t serial;
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80 /**
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81 * The year of manufacturing.
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82 *
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83 * A value of zero means year 2000.
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84 */
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85 uint8_t manufacturing_year;
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86 /**
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87 * The month of manufacturing.
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88 */
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89 uint8_t manufacturing_month;
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90 /**
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91 * The card's total capacity in bytes.
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92 */
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93 offset_t capacity;
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94 /**
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95 * Defines wether the card's content is original or copied.
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96 *
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97 * A value of \c 0 means original, \c 1 means copied.
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98 */
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99 uint8_t flag_copy;
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100 /**
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101 * Defines wether the card's content is write-protected.
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102 *
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103 * \note This is an internal flag and does not represent the
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104 * state of the card's mechanical write-protect switch.
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105 */
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106 uint8_t flag_write_protect;
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107 /**
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108 * Defines wether the card's content is temporarily write-protected.
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109 *
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110 * \note This is an internal flag and does not represent the
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111 * state of the card's mechanical write-protect switch.
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112 */
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113 uint8_t flag_write_protect_temp;
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114 /**
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115 * The card's data layout.
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116 *
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117 * See the \c SD_RAW_FORMAT_* constants for details.
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118 *
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119 * \note This value is not guaranteed to match reality.
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120 */
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121 uint8_t format;
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122 };
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123
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124 typedef uint8_t (*sd_raw_read_interval_handler_t)(uint8_t* buffer, offset_t offset, void* p);
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125 typedef uintptr_t (*sd_raw_write_interval_handler_t)(uint8_t* buffer, offset_t offset, void* p);
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126
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127 uint8_t sd_raw_init();
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128 uint8_t sd_raw_available();
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129 uint8_t sd_raw_locked();
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130
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131 uint8_t sd_raw_read(offset_t offset, uint8_t* buffer, uintptr_t length);
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132 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);
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133 uint8_t sd_raw_write(offset_t offset, const uint8_t* buffer, uintptr_t length);
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134 uint8_t sd_raw_write_interval(offset_t offset, uint8_t* buffer, uintptr_t length, sd_raw_write_interval_handler_t callback, void* p);
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135 uint8_t sd_raw_sync();
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136
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137 uint8_t sd_raw_get_info(struct sd_raw_info* info);
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138
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139 /**
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140 * @}
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141 */
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142
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143 #ifdef __cplusplus
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144 }
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145 #endif
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146
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147 #endif
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148