SdInfo.h 7.1 KB

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  1. /* Arduino Sd2Card Library
  2. * Copyright (C) 2009 by William Greiman
  3. *
  4. * This file is part of the Arduino Sd2Card Library
  5. *
  6. * This Library is free software: you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License as published by
  8. * the Free Software Foundation, either version 3 of the License, or
  9. * (at your option) any later version.
  10. *
  11. * This Library is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU General Public License for more details.
  15. *
  16. * You should have received a copy of the GNU General Public License
  17. * along with the Arduino Sd2Card Library. If not, see
  18. * <http://www.gnu.org/licenses/>.
  19. */
  20. #ifndef SdInfo_h
  21. #define SdInfo_h
  22. #include <stdint.h>
  23. // Based on the document:
  24. //
  25. // SD Specifications
  26. // Part 1
  27. // Physical Layer
  28. // Simplified Specification
  29. // Version 2.00
  30. // September 25, 2006
  31. //
  32. // www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf
  33. //------------------------------------------------------------------------------
  34. // SD card commands
  35. /** GO_IDLE_STATE - init card in spi mode if CS low */
  36. uint8_t const CMD0 = 0X00;
  37. /** SEND_IF_COND - verify SD Memory Card interface operating condition.*/
  38. uint8_t const CMD8 = 0X08;
  39. /** SEND_CSD - read the Card Specific Data (CSD register) */
  40. uint8_t const CMD9 = 0X09;
  41. /** SEND_CID - read the card identification information (CID register) */
  42. uint8_t const CMD10 = 0X0A;
  43. /** SEND_STATUS - read the card status register */
  44. uint8_t const CMD13 = 0X0D;
  45. /** READ_BLOCK - read a single data block from the card */
  46. uint8_t const CMD17 = 0X11;
  47. /** WRITE_BLOCK - write a single data block to the card */
  48. uint8_t const CMD24 = 0X18;
  49. /** WRITE_MULTIPLE_BLOCK - write blocks of data until a STOP_TRANSMISSION */
  50. uint8_t const CMD25 = 0X19;
  51. /** ERASE_WR_BLK_START - sets the address of the first block to be erased */
  52. uint8_t const CMD32 = 0X20;
  53. /** ERASE_WR_BLK_END - sets the address of the last block of the continuous
  54. range to be erased*/
  55. uint8_t const CMD33 = 0X21;
  56. /** ERASE - erase all previously selected blocks */
  57. uint8_t const CMD38 = 0X26;
  58. /** APP_CMD - escape for application specific command */
  59. uint8_t const CMD55 = 0X37;
  60. /** READ_OCR - read the OCR register of a card */
  61. uint8_t const CMD58 = 0X3A;
  62. /** SET_WR_BLK_ERASE_COUNT - Set the number of write blocks to be
  63. pre-erased before writing */
  64. uint8_t const ACMD23 = 0X17;
  65. /** SD_SEND_OP_COMD - Sends host capacity support information and
  66. activates the card's initialization process */
  67. uint8_t const ACMD41 = 0X29;
  68. //------------------------------------------------------------------------------
  69. /** status for card in the ready state */
  70. uint8_t const R1_READY_STATE = 0X00;
  71. /** status for card in the idle state */
  72. uint8_t const R1_IDLE_STATE = 0X01;
  73. /** status bit for illegal command */
  74. uint8_t const R1_ILLEGAL_COMMAND = 0X04;
  75. /** start data token for read or write single block*/
  76. uint8_t const DATA_START_BLOCK = 0XFE;
  77. /** stop token for write multiple blocks*/
  78. uint8_t const STOP_TRAN_TOKEN = 0XFD;
  79. /** start data token for write multiple blocks*/
  80. uint8_t const WRITE_MULTIPLE_TOKEN = 0XFC;
  81. /** mask for data response tokens after a write block operation */
  82. uint8_t const DATA_RES_MASK = 0X1F;
  83. /** write data accepted token */
  84. uint8_t const DATA_RES_ACCEPTED = 0X05;
  85. //------------------------------------------------------------------------------
  86. typedef struct CID {
  87. // byte 0
  88. uint8_t mid; // Manufacturer ID
  89. // byte 1-2
  90. char oid[2]; // OEM/Application ID
  91. // byte 3-7
  92. char pnm[5]; // Product name
  93. // byte 8
  94. unsigned prv_m : 4; // Product revision n.m
  95. unsigned prv_n : 4;
  96. // byte 9-12
  97. uint32_t psn; // Product serial number
  98. // byte 13
  99. unsigned mdt_year_high : 4; // Manufacturing date
  100. unsigned reserved : 4;
  101. // byte 14
  102. unsigned mdt_month : 4;
  103. unsigned mdt_year_low :4;
  104. // byte 15
  105. unsigned always1 : 1;
  106. unsigned crc : 7;
  107. }cid_t;
  108. //------------------------------------------------------------------------------
  109. // CSD for version 1.00 cards
  110. typedef struct CSDV1 {
  111. // byte 0
  112. unsigned reserved1 : 6;
  113. unsigned csd_ver : 2;
  114. // byte 1
  115. uint8_t taac;
  116. // byte 2
  117. uint8_t nsac;
  118. // byte 3
  119. uint8_t tran_speed;
  120. // byte 4
  121. uint8_t ccc_high;
  122. // byte 5
  123. unsigned read_bl_len : 4;
  124. unsigned ccc_low : 4;
  125. // byte 6
  126. unsigned c_size_high : 2;
  127. unsigned reserved2 : 2;
  128. unsigned dsr_imp : 1;
  129. unsigned read_blk_misalign :1;
  130. unsigned write_blk_misalign : 1;
  131. unsigned read_bl_partial : 1;
  132. // byte 7
  133. uint8_t c_size_mid;
  134. // byte 8
  135. unsigned vdd_r_curr_max : 3;
  136. unsigned vdd_r_curr_min : 3;
  137. unsigned c_size_low :2;
  138. // byte 9
  139. unsigned c_size_mult_high : 2;
  140. unsigned vdd_w_cur_max : 3;
  141. unsigned vdd_w_curr_min : 3;
  142. // byte 10
  143. unsigned sector_size_high : 6;
  144. unsigned erase_blk_en : 1;
  145. unsigned c_size_mult_low : 1;
  146. // byte 11
  147. unsigned wp_grp_size : 7;
  148. unsigned sector_size_low : 1;
  149. // byte 12
  150. unsigned write_bl_len_high : 2;
  151. unsigned r2w_factor : 3;
  152. unsigned reserved3 : 2;
  153. unsigned wp_grp_enable : 1;
  154. // byte 13
  155. unsigned reserved4 : 5;
  156. unsigned write_partial : 1;
  157. unsigned write_bl_len_low : 2;
  158. // byte 14
  159. unsigned reserved5: 2;
  160. unsigned file_format : 2;
  161. unsigned tmp_write_protect : 1;
  162. unsigned perm_write_protect : 1;
  163. unsigned copy : 1;
  164. unsigned file_format_grp : 1;
  165. // byte 15
  166. unsigned always1 : 1;
  167. unsigned crc : 7;
  168. }csd1_t;
  169. //------------------------------------------------------------------------------
  170. // CSD for version 2.00 cards
  171. typedef struct CSDV2 {
  172. // byte 0
  173. unsigned reserved1 : 6;
  174. unsigned csd_ver : 2;
  175. // byte 1
  176. uint8_t taac;
  177. // byte 2
  178. uint8_t nsac;
  179. // byte 3
  180. uint8_t tran_speed;
  181. // byte 4
  182. uint8_t ccc_high;
  183. // byte 5
  184. unsigned read_bl_len : 4;
  185. unsigned ccc_low : 4;
  186. // byte 6
  187. unsigned reserved2 : 4;
  188. unsigned dsr_imp : 1;
  189. unsigned read_blk_misalign :1;
  190. unsigned write_blk_misalign : 1;
  191. unsigned read_bl_partial : 1;
  192. // byte 7
  193. unsigned reserved3 : 2;
  194. unsigned c_size_high : 6;
  195. // byte 8
  196. uint8_t c_size_mid;
  197. // byte 9
  198. uint8_t c_size_low;
  199. // byte 10
  200. unsigned sector_size_high : 6;
  201. unsigned erase_blk_en : 1;
  202. unsigned reserved4 : 1;
  203. // byte 11
  204. unsigned wp_grp_size : 7;
  205. unsigned sector_size_low : 1;
  206. // byte 12
  207. unsigned write_bl_len_high : 2;
  208. unsigned r2w_factor : 3;
  209. unsigned reserved5 : 2;
  210. unsigned wp_grp_enable : 1;
  211. // byte 13
  212. unsigned reserved6 : 5;
  213. unsigned write_partial : 1;
  214. unsigned write_bl_len_low : 2;
  215. // byte 14
  216. unsigned reserved7: 2;
  217. unsigned file_format : 2;
  218. unsigned tmp_write_protect : 1;
  219. unsigned perm_write_protect : 1;
  220. unsigned copy : 1;
  221. unsigned file_format_grp : 1;
  222. // byte 15
  223. unsigned always1 : 1;
  224. unsigned crc : 7;
  225. }csd2_t;
  226. //------------------------------------------------------------------------------
  227. // union of old and new style CSD register
  228. union csd_t {
  229. csd1_t v1;
  230. csd2_t v2;
  231. };
  232. #endif // SdInfo_h