Quadrotor

/* Arduino Sd2Card Library

 * Copyright (C) 2009 by William Greiman

 *

 * This file is part of the Arduino Sd2Card Library

 *

 * This Library is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This Library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with the Arduino Sd2Card Library.  If not, see

 * <http://www.gnu.org/licenses/>.

 */

#ifndef SdInfo_h

#define SdInfo_h

#include <stdint.h>

// Based on the document:

//

// SD Specifications

// Part 1

// Physical Layer

// Simplified Specification

// Version 2.00

// September 25, 2006

//

// www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf

//------------------------------------------------------------------------------

// SD card commands

/** GO_IDLE_STATE - init card in spi mode if CS low */

uint8_t const CMD0 = 0X00;

/** SEND_IF_COND - verify SD Memory Card interface operating condition.*/

uint8_t const CMD8 = 0X08;

/** SEND_CSD - read the Card Specific Data (CSD register) */

uint8_t const CMD9 = 0X09;

/** SEND_CID - read the card identification information (CID register) */

uint8_t const CMD10 = 0X0A;

/** SEND_STATUS - read the card status register */

uint8_t const CMD13 = 0X0D;

/** READ_BLOCK - read a single data block from the card */

uint8_t const CMD17 = 0X11;

/** WRITE_BLOCK - write a single data block to the card */

uint8_t const CMD24 = 0X18;

/** WRITE_MULTIPLE_BLOCK - write blocks of data until a STOP_TRANSMISSION */

uint8_t const CMD25 = 0X19;

/** ERASE_WR_BLK_START - sets the address of the first block to be erased */

uint8_t const CMD32 = 0X20;

/** ERASE_WR_BLK_END - sets the address of the last block of the continuous

    range to be erased*/

uint8_t const CMD33 = 0X21;

/** ERASE - erase all previously selected blocks */

uint8_t const CMD38 = 0X26;

/** APP_CMD - escape for application specific command */

uint8_t const CMD55 = 0X37;

/** READ_OCR - read the OCR register of a card */

uint8_t const CMD58 = 0X3A;

/** SET_WR_BLK_ERASE_COUNT - Set the number of write blocks to be

     pre-erased before writing */

uint8_t const ACMD23 = 0X17;

/** SD_SEND_OP_COMD - Sends host capacity support information and

    activates the card's initialization process */

uint8_t const ACMD41 = 0X29;

//------------------------------------------------------------------------------

/** status for card in the ready state */

uint8_t const R1_READY_STATE = 0X00;

/** status for card in the idle state */

uint8_t const R1_IDLE_STATE = 0X01;

/** status bit for illegal command */

uint8_t const R1_ILLEGAL_COMMAND = 0X04;

/** start data token for read or write single block*/

uint8_t const DATA_START_BLOCK = 0XFE;

/** stop token for write multiple blocks*/

uint8_t const STOP_TRAN_TOKEN = 0XFD;

/** start data token for write multiple blocks*/

uint8_t const WRITE_MULTIPLE_TOKEN = 0XFC;

/** mask for data response tokens after a write block operation */

uint8_t const DATA_RES_MASK = 0X1F;

/** write data accepted token */

uint8_t const DATA_RES_ACCEPTED = 0X05;

//------------------------------------------------------------------------------

typedef struct CID {

  // byte 0

  uint8_t mid;  // Manufacturer ID

  // byte 1-2

  char oid[2];  // OEM/Application ID

  // byte 3-7

  char pnm[5];  // Product name

  // byte 8

  unsigned prv_m : 4;  // Product revision n.m

  unsigned prv_n : 4;

  // byte 9-12

  uint32_t psn;  // Product serial number

  // byte 13

  unsigned mdt_year_high : 4;  // Manufacturing date

  unsigned reserved : 4;

  // byte 14

  unsigned mdt_month : 4;

  unsigned mdt_year_low :4;

  // byte 15

  unsigned always1 : 1;

  unsigned crc : 7;

}cid_t;

//------------------------------------------------------------------------------

// CSD for version 1.00 cards

typedef struct CSDV1 {

  // byte 0

  unsigned reserved1 : 6;

  unsigned csd_ver : 2;

  // byte 1

  uint8_t taac;

  // byte 2

  uint8_t nsac;

  // byte 3

  uint8_t tran_speed;

  // byte 4

  uint8_t ccc_high;

  // byte 5

  unsigned read_bl_len : 4;

  unsigned ccc_low : 4;

  // byte 6

  unsigned c_size_high : 2;

  unsigned reserved2 : 2;

  unsigned dsr_imp : 1;

  unsigned read_blk_misalign :1;

  unsigned write_blk_misalign : 1;

  unsigned read_bl_partial : 1;

  // byte 7

  uint8_t c_size_mid;

  // byte 8

  unsigned vdd_r_curr_max : 3;

  unsigned vdd_r_curr_min : 3;

  unsigned c_size_low :2;

  // byte 9

  unsigned c_size_mult_high : 2;

  unsigned vdd_w_cur_max : 3;

  unsigned vdd_w_curr_min : 3;

  // byte 10

  unsigned sector_size_high : 6;

  unsigned erase_blk_en : 1;

  unsigned c_size_mult_low : 1;

  // byte 11

  unsigned wp_grp_size : 7;

  unsigned sector_size_low : 1;

  // byte 12

  unsigned write_bl_len_high : 2;

  unsigned r2w_factor : 3;

  unsigned reserved3 : 2;

  unsigned wp_grp_enable : 1;

  // byte 13

  unsigned reserved4 : 5;

  unsigned write_partial : 1;

  unsigned write_bl_len_low : 2;

  // byte 14

  unsigned reserved5: 2;

  unsigned file_format : 2;

  unsigned tmp_write_protect : 1;

  unsigned perm_write_protect : 1;

  unsigned copy : 1;

  unsigned file_format_grp : 1;

  // byte 15

  unsigned always1 : 1;

  unsigned crc : 7;

}csd1_t;

//------------------------------------------------------------------------------

// CSD for version 2.00 cards

typedef struct CSDV2 {

  // byte 0

  unsigned reserved1 : 6;

  unsigned csd_ver : 2;

  // byte 1

  uint8_t taac;

  // byte 2

  uint8_t nsac;

  // byte 3

  uint8_t tran_speed;

  // byte 4

  uint8_t ccc_high;

  // byte 5

  unsigned read_bl_len : 4;

  unsigned ccc_low : 4;

  // byte 6

  unsigned reserved2 : 4;

  unsigned dsr_imp : 1;

  unsigned read_blk_misalign :1;

  unsigned write_blk_misalign : 1;

  unsigned read_bl_partial : 1;

  // byte 7

  unsigned reserved3 : 2;

  unsigned c_size_high : 6;

  // byte 8

  uint8_t c_size_mid;

  // byte 9

  uint8_t c_size_low;

  // byte 10

  unsigned sector_size_high : 6;

  unsigned erase_blk_en : 1;

  unsigned reserved4 : 1;

  // byte 11

  unsigned wp_grp_size : 7;

  unsigned sector_size_low : 1;

  // byte 12

  unsigned write_bl_len_high : 2;

  unsigned r2w_factor : 3;

  unsigned reserved5 : 2;

  unsigned wp_grp_enable : 1;

  // byte 13

  unsigned reserved6 : 5;

  unsigned write_partial : 1;

  unsigned write_bl_len_low : 2;

  // byte 14

  unsigned reserved7: 2;

  unsigned file_format : 2;

  unsigned tmp_write_protect : 1;

  unsigned perm_write_protect : 1;

  unsigned copy : 1;

  unsigned file_format_grp : 1;

  // byte 15

  unsigned always1 : 1;

  unsigned crc : 7;

}csd2_t;

//------------------------------------------------------------------------------

// union of old and new style CSD register

union csd_t {

  csd1_t v1;

  csd2_t v2;

};

#endif  // SdInfo_h