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/* Arduino FAT16 Library
* Copyright (C) 2008 by William Greiman
*
* This file is part of the Arduino FAT16 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 Fat16 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
//
// Card IDentification (CID) register
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;
// Card-Specific Data register
typedef struct CSD {
// 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;
}csd_t;
#endif // SdInfo_h
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