[136] | 1 | /* Arduino FAT16 Library
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| 2 | * Copyright (C) 2008 by William Greiman
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| 3 | *
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| 4 | * This file is part of the Arduino FAT16 Library
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| 5 | *
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| 6 | * This Library is free software: you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation, either version 3 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This Library is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 |
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with the Arduino Fat16 Library. If not, see
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| 18 | * <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #ifndef SdInfo_h
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| 21 | #define SdInfo_h
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| 22 | #include <stdint.h>
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| 23 | // Based on the document:
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| 24 | //
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| 25 | // SD Specifications
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| 26 | // Part 1
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| 27 | // Physical Layer
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| 28 | // Simplified Specification
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| 29 | // Version 2.00
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| 30 | // September 25, 2006
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| 31 | //
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| 32 | // www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf
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| 33 | //
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| 34 | // Card IDentification (CID) register
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| 35 | typedef struct CID {
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| 36 | // byte 0
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| 37 | uint8_t mid; // Manufacturer ID
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| 38 | // byte 1-2
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| 39 | char oid[2]; // OEM/Application ID
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| 40 | // byte 3-7
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| 41 | char pnm[5]; // Product name
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| 42 | // byte 8
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| 43 | unsigned prv_m : 4; // Product revision n.m
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| 44 | unsigned prv_n : 4;
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| 45 | // byte 9-12
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| 46 | uint32_t psn; // Product serial number
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| 47 | // byte 13
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| 48 | unsigned mdt_year_high : 4; // Manufacturing date
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| 49 | unsigned reserved : 4;
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| 50 | // byte 14
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| 51 | unsigned mdt_month : 4;
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| 52 | unsigned mdt_year_low :4;
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| 53 | // byte 15
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| 54 | unsigned always1 : 1;
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| 55 | unsigned crc : 7;
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| 56 | }cid_t;
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| 57 | // Card-Specific Data register
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| 58 | typedef struct CSD {
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| 59 | // byte 0
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| 60 | unsigned reserved1 : 6;
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| 61 | unsigned csd_ver : 2;
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| 62 | // byte 1
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| 63 | uint8_t taac;
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| 64 | // byte 2
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| 65 | uint8_t nsac;
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| 66 | // byte 3
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| 67 | uint8_t tran_speed;
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| 68 | // byte 4
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| 69 | uint8_t ccc_high;
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| 70 | // byte 5
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| 71 | unsigned read_bl_len : 4;
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| 72 | unsigned ccc_low : 4;
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| 73 | // byte 6
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| 74 | unsigned c_size_high : 2;
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| 75 | unsigned reserved2 : 2;
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| 76 | unsigned dsr_imp : 1;
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| 77 | unsigned read_blk_misalign :1;
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| 78 | unsigned write_blk_misalign : 1;
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| 79 | unsigned read_bl_partial : 1;
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| 80 | // byte 7
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| 81 | uint8_t c_size_mid;
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| 82 | // byte 8
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| 83 | unsigned vdd_r_curr_max : 3;
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| 84 | unsigned vdd_r_curr_min : 3;
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| 85 | unsigned c_size_low :2;
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| 86 | // byte 9
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| 87 | unsigned c_size_mult_high : 2;
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| 88 | unsigned vdd_w_cur_max : 3;
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| 89 | unsigned vdd_w_curr_min : 3;
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| 90 | // byte 10
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| 91 | unsigned sector_size_high : 6;
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| 92 | unsigned erase_blk_en : 1;
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| 93 | unsigned c_size_mult_low : 1;
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| 94 | // byte 11
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| 95 | unsigned wp_grp_size : 7;
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| 96 | unsigned sector_size_low : 1;
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| 97 | // byte 12
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| 98 | unsigned write_bl_len_high : 2;
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| 99 | unsigned r2w_factor : 3;
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| 100 | unsigned reserved3 : 2;
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| 101 | unsigned wp_grp_enable : 1;
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| 102 | // byte 13
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| 103 | unsigned reserved4 : 5;
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| 104 | unsigned write_partial : 1;
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| 105 | unsigned write_bl_len_low : 2;
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| 106 | // byte 14
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| 107 | unsigned reserved5: 2;
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| 108 | unsigned file_format : 2;
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| 109 | unsigned tmp_write_protect : 1;
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| 110 | unsigned perm_write_protect : 1;
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| 111 | unsigned copy : 1;
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| 112 | unsigned file_format_grp : 1;
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| 113 | // byte 15
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| 114 | unsigned always1 : 1;
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| 115 | unsigned crc : 7;
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| 116 | }csd_t;
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| 117 | #endif // SdInfo_h
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