To fix the hang problem
Dependencies: FreescaleIAP SimpleDMA mbed-rtos mbed
Fork of CDMS_CODE by
cdms_sd.h@71:9193fbdaa3e1, 2016-01-19 (annotated)
- Committer:
- krishanprajapat
- Date:
- Tue Jan 19 10:30:46 2016 +0000
- Revision:
- 71:9193fbdaa3e1
Modification of CDMS_sd.h required
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
krishanprajapat | 71:9193fbdaa3e1 | 1 | |
krishanprajapat | 71:9193fbdaa3e1 | 2 | |
krishanprajapat | 71:9193fbdaa3e1 | 3 | |
krishanprajapat | 71:9193fbdaa3e1 | 4 | SPI spi(PTE1, PTE3, PTE2); // MOSI,MISO, CLOCK microcontroller(in order) |
krishanprajapat | 71:9193fbdaa3e1 | 5 | DigitalOut cs_sd(PTE22); |
krishanprajapat | 71:9193fbdaa3e1 | 6 | |
krishanprajapat | 71:9193fbdaa3e1 | 7 | Serial sd1(USBTX,USBRX); |
krishanprajapat | 71:9193fbdaa3e1 | 8 | |
krishanprajapat | 71:9193fbdaa3e1 | 9 | |
krishanprajapat | 71:9193fbdaa3e1 | 10 | #define SD_COMMAND_TIMEOUT 5000 |
krishanprajapat | 71:9193fbdaa3e1 | 11 | |
krishanprajapat | 71:9193fbdaa3e1 | 12 | #define SD_DBG 0 |
krishanprajapat | 71:9193fbdaa3e1 | 13 | |
krishanprajapat | 71:9193fbdaa3e1 | 14 | #define R1_IDLE_STATE (1 << 0) |
krishanprajapat | 71:9193fbdaa3e1 | 15 | #define R1_ERASE_RESET (1 << 1) |
krishanprajapat | 71:9193fbdaa3e1 | 16 | #define R1_ILLEGAL_COMMAND (1 << 2) |
krishanprajapat | 71:9193fbdaa3e1 | 17 | #define R1_COM_CRC_ERROR (1 << 3) |
krishanprajapat | 71:9193fbdaa3e1 | 18 | #define R1_ERASE_SEQUENCE_ERROR (1 << 4) |
krishanprajapat | 71:9193fbdaa3e1 | 19 | #define R1_ADDRESS_ERROR (1 << 5) |
krishanprajapat | 71:9193fbdaa3e1 | 20 | #define R1_PARAMETER_ERROR (1 << 6) |
krishanprajapat | 71:9193fbdaa3e1 | 21 | |
krishanprajapat | 71:9193fbdaa3e1 | 22 | |
krishanprajapat | 71:9193fbdaa3e1 | 23 | |
krishanprajapat | 71:9193fbdaa3e1 | 24 | #define SD_MAX_CYCLES 10000 |
krishanprajapat | 71:9193fbdaa3e1 | 25 | |
krishanprajapat | 71:9193fbdaa3e1 | 26 | extern uint8_t SD_INIT_FLAGS; |
krishanprajapat | 71:9193fbdaa3e1 | 27 | |
krishanprajapat | 71:9193fbdaa3e1 | 28 | |
krishanprajapat | 71:9193fbdaa3e1 | 29 | |
krishanprajapat | 71:9193fbdaa3e1 | 30 | int initialise_card(); |
krishanprajapat | 71:9193fbdaa3e1 | 31 | int initialise_card_v1(); |
krishanprajapat | 71:9193fbdaa3e1 | 32 | int initialise_card_v2(); |
krishanprajapat | 71:9193fbdaa3e1 | 33 | int disk_write(const uint8_t *, uint64_t); |
krishanprajapat | 71:9193fbdaa3e1 | 34 | int disk_read(uint8_t *, uint64_t); |
krishanprajapat | 71:9193fbdaa3e1 | 35 | int disk_initialize(); |
krishanprajapat | 71:9193fbdaa3e1 | 36 | int disk_erase(int,int); |
krishanprajapat | 71:9193fbdaa3e1 | 37 | |
krishanprajapat | 71:9193fbdaa3e1 | 38 | //void FCTN_CDMS_INIT_SD(); |
krishanprajapat | 71:9193fbdaa3e1 | 39 | //int FCTN_CDMS_WR_SD(const uint8_t *, uint64_t); |
krishanprajapat | 71:9193fbdaa3e1 | 40 | //int FCTN_CDMS_RD_SD(uint8_t *, uint64_t); |
krishanprajapat | 71:9193fbdaa3e1 | 41 | uint8_t FCTN_SD_MNGR(uint8_t); |
krishanprajapat | 71:9193fbdaa3e1 | 42 | |
krishanprajapat | 71:9193fbdaa3e1 | 43 | |
krishanprajapat | 71:9193fbdaa3e1 | 44 | int cmd(int, int); |
krishanprajapat | 71:9193fbdaa3e1 | 45 | int cmd58(); |
krishanprajapat | 71:9193fbdaa3e1 | 46 | int cmdx(int, int); |
krishanprajapat | 71:9193fbdaa3e1 | 47 | int cmd8(); |
krishanprajapat | 71:9193fbdaa3e1 | 48 | int read(uint8_t*, uint32_t ); |
krishanprajapat | 71:9193fbdaa3e1 | 49 | int write(const uint8_t*, uint32_t ); |
krishanprajapat | 71:9193fbdaa3e1 | 50 | static uint32_t ext_bits(unsigned char *, int , int ); |
krishanprajapat | 71:9193fbdaa3e1 | 51 | int SD_WRITE(uint8_t*,uint8_t,uint8_t); |
krishanprajapat | 71:9193fbdaa3e1 | 52 | void FCTN_CDMS_SD_INIT(); |
krishanprajapat | 71:9193fbdaa3e1 | 53 | int SD_READ(uint8_t*,uint8_t,uint8_t); |
krishanprajapat | 71:9193fbdaa3e1 | 54 | #define SDCARD_FAIL 0 |
krishanprajapat | 71:9193fbdaa3e1 | 55 | #define SDCARD_V1 1 |
krishanprajapat | 71:9193fbdaa3e1 | 56 | #define SDCARD_V2 2 |
krishanprajapat | 71:9193fbdaa3e1 | 57 | #define SDCARD_V2HC 3 |
krishanprajapat | 71:9193fbdaa3e1 | 58 | |
krishanprajapat | 71:9193fbdaa3e1 | 59 | |
krishanprajapat | 71:9193fbdaa3e1 | 60 | |
krishanprajapat | 71:9193fbdaa3e1 | 61 | |
krishanprajapat | 71:9193fbdaa3e1 | 62 | |
krishanprajapat | 71:9193fbdaa3e1 | 63 | |
krishanprajapat | 71:9193fbdaa3e1 | 64 | |
krishanprajapat | 71:9193fbdaa3e1 | 65 | |
krishanprajapat | 71:9193fbdaa3e1 | 66 | |
krishanprajapat | 71:9193fbdaa3e1 | 67 | |
krishanprajapat | 71:9193fbdaa3e1 | 68 | |
krishanprajapat | 71:9193fbdaa3e1 | 69 | int cdv; |
krishanprajapat | 71:9193fbdaa3e1 | 70 | uint64_t sd_sectors(); |
krishanprajapat | 71:9193fbdaa3e1 | 71 | uint64_t sectors; |
krishanprajapat | 71:9193fbdaa3e1 | 72 | |
krishanprajapat | 71:9193fbdaa3e1 | 73 | void FCTN_CDMS_SD_INIT() |
krishanprajapat | 71:9193fbdaa3e1 | 74 | { |
krishanprajapat | 71:9193fbdaa3e1 | 75 | |
krishanprajapat | 71:9193fbdaa3e1 | 76 | initialise_card(); |
krishanprajapat | 71:9193fbdaa3e1 | 77 | |
krishanprajapat | 71:9193fbdaa3e1 | 78 | disk_initialize(); |
krishanprajapat | 71:9193fbdaa3e1 | 79 | |
krishanprajapat | 71:9193fbdaa3e1 | 80 | } |
krishanprajapat | 71:9193fbdaa3e1 | 81 | |
krishanprajapat | 71:9193fbdaa3e1 | 82 | |
krishanprajapat | 71:9193fbdaa3e1 | 83 | |
krishanprajapat | 71:9193fbdaa3e1 | 84 | uint8_t FCTN_SD_MNGR(uint8_t sid) |
krishanprajapat | 71:9193fbdaa3e1 | 85 | |
krishanprajapat | 71:9193fbdaa3e1 | 86 | { |
krishanprajapat | 71:9193fbdaa3e1 | 87 | |
krishanprajapat | 71:9193fbdaa3e1 | 88 | uint32_t SD_MNG_SECT=7000; |
krishanprajapat | 71:9193fbdaa3e1 | 89 | uint32_t block_number; |
krishanprajapat | 71:9193fbdaa3e1 | 90 | uint8_t fsc; |
krishanprajapat | 71:9193fbdaa3e1 | 91 | uint8_t *buffer; |
krishanprajapat | 71:9193fbdaa3e1 | 92 | uint32_t i=0; |
krishanprajapat | 71:9193fbdaa3e1 | 93 | disk_read(buffer, SD_MNG_SECT); |
krishanprajapat | 71:9193fbdaa3e1 | 94 | |
krishanprajapat | 71:9193fbdaa3e1 | 95 | if(sid==0x0) |
krishanprajapat | 71:9193fbdaa3e1 | 96 | { |
krishanprajapat | 71:9193fbdaa3e1 | 97 | fsc=buffer[0]; |
krishanprajapat | 71:9193fbdaa3e1 | 98 | buffer[0]++; |
krishanprajapat | 71:9193fbdaa3e1 | 99 | buffer[511]+=2; |
krishanprajapat | 71:9193fbdaa3e1 | 100 | disk_write(buffer,SD_MNG_SECT); |
krishanprajapat | 71:9193fbdaa3e1 | 101 | } |
krishanprajapat | 71:9193fbdaa3e1 | 102 | if(sid==0x1) |
krishanprajapat | 71:9193fbdaa3e1 | 103 | { |
krishanprajapat | 71:9193fbdaa3e1 | 104 | fsc=buffer[1]; |
krishanprajapat | 71:9193fbdaa3e1 | 105 | buffer[1]++; |
krishanprajapat | 71:9193fbdaa3e1 | 106 | buffer[511]+=2; |
krishanprajapat | 71:9193fbdaa3e1 | 107 | disk_write(buffer,SD_MNG_SECT); |
krishanprajapat | 71:9193fbdaa3e1 | 108 | } |
krishanprajapat | 71:9193fbdaa3e1 | 109 | if(sid==0x2) |
krishanprajapat | 71:9193fbdaa3e1 | 110 | { |
krishanprajapat | 71:9193fbdaa3e1 | 111 | fsc=buffer[2]; |
krishanprajapat | 71:9193fbdaa3e1 | 112 | buffer[2]++; |
krishanprajapat | 71:9193fbdaa3e1 | 113 | buffer[511]+=2; |
krishanprajapat | 71:9193fbdaa3e1 | 114 | disk_write(buffer,SD_MNG_SECT); |
krishanprajapat | 71:9193fbdaa3e1 | 115 | } |
krishanprajapat | 71:9193fbdaa3e1 | 116 | if(sid==0x3) |
krishanprajapat | 71:9193fbdaa3e1 | 117 | { |
krishanprajapat | 71:9193fbdaa3e1 | 118 | fsc=buffer[30]; |
krishanprajapat | 71:9193fbdaa3e1 | 119 | printf("Hey buffer[300] pre-increment is %d\r\n",buffer[300]); |
krishanprajapat | 71:9193fbdaa3e1 | 120 | buffer[300]+=1; |
krishanprajapat | 71:9193fbdaa3e1 | 121 | printf("Hey buffer[300] post-increment is %d\r\n",buffer[300]); |
krishanprajapat | 71:9193fbdaa3e1 | 122 | buffer[511]+=2; |
krishanprajapat | 71:9193fbdaa3e1 | 123 | disk_write(buffer,SD_MNG_SECT); |
krishanprajapat | 71:9193fbdaa3e1 | 124 | disk_read(buffer, SD_MNG_SECT); |
krishanprajapat | 71:9193fbdaa3e1 | 125 | printf("Hey buffer[300] post writing is %d\r\n",buffer[300]); |
krishanprajapat | 71:9193fbdaa3e1 | 126 | printf("Hey buffer[511] post writing is %d\r\n",buffer[511]); |
krishanprajapat | 71:9193fbdaa3e1 | 127 | } |
krishanprajapat | 71:9193fbdaa3e1 | 128 | if(sid==0x4) |
krishanprajapat | 71:9193fbdaa3e1 | 129 | { |
krishanprajapat | 71:9193fbdaa3e1 | 130 | fsc=buffer[4]; |
krishanprajapat | 71:9193fbdaa3e1 | 131 | buffer[4]++; |
krishanprajapat | 71:9193fbdaa3e1 | 132 | buffer[511]+=2; |
krishanprajapat | 71:9193fbdaa3e1 | 133 | disk_write(buffer,SD_MNG_SECT); |
krishanprajapat | 71:9193fbdaa3e1 | 134 | } |
krishanprajapat | 71:9193fbdaa3e1 | 135 | return fsc; |
krishanprajapat | 71:9193fbdaa3e1 | 136 | } |
krishanprajapat | 71:9193fbdaa3e1 | 137 | |
krishanprajapat | 71:9193fbdaa3e1 | 138 | |
krishanprajapat | 71:9193fbdaa3e1 | 139 | int SD_WRITE(uint8_t* buffer,uint8_t fsc,uint8_t sid) |
krishanprajapat | 71:9193fbdaa3e1 | 140 | { |
krishanprajapat | 71:9193fbdaa3e1 | 141 | |
krishanprajapat | 71:9193fbdaa3e1 | 142 | uint32_t SD_SCP_FIRST=1001; |
krishanprajapat | 71:9193fbdaa3e1 | 143 | uint32_t SD_SCP_LAST=2000; |
krishanprajapat | 71:9193fbdaa3e1 | 144 | uint32_t SD_SFF_AT_FIRST=2001; |
krishanprajapat | 71:9193fbdaa3e1 | 145 | uint32_t SD_SFF_AT_LAST = 3000; |
krishanprajapat | 71:9193fbdaa3e1 | 146 | uint32_t SD_SFF_BT_FIRST =3001; |
krishanprajapat | 71:9193fbdaa3e1 | 147 | uint32_t SD_SFF_BT_LAST=4000; |
krishanprajapat | 71:9193fbdaa3e1 | 148 | uint32_t SD_HK_ARCH_FIRST=4001; |
krishanprajapat | 71:9193fbdaa3e1 | 149 | uint32_t SD_HK_ARCH_LAST= 5000; |
krishanprajapat | 71:9193fbdaa3e1 | 150 | uint32_t LOG_FIRST =5001; |
krishanprajapat | 71:9193fbdaa3e1 | 151 | uint32_t LOG_LAST=6000; |
krishanprajapat | 71:9193fbdaa3e1 | 152 | uint32_t SD_MNG_SECT=7000; |
krishanprajapat | 71:9193fbdaa3e1 | 153 | uint32_t block_number; |
krishanprajapat | 71:9193fbdaa3e1 | 154 | int result; |
krishanprajapat | 71:9193fbdaa3e1 | 155 | if(sid==0x0) |
krishanprajapat | 71:9193fbdaa3e1 | 156 | { |
krishanprajapat | 71:9193fbdaa3e1 | 157 | block_number=SD_SCP_FIRST+uint32_t(fsc); |
krishanprajapat | 71:9193fbdaa3e1 | 158 | // printf("write_block_number=%d\r\n",block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 159 | result= disk_write(buffer,block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 160 | return result; |
krishanprajapat | 71:9193fbdaa3e1 | 161 | } |
krishanprajapat | 71:9193fbdaa3e1 | 162 | if(sid==0x1) |
krishanprajapat | 71:9193fbdaa3e1 | 163 | { |
krishanprajapat | 71:9193fbdaa3e1 | 164 | block_number=SD_SFF_AT_FIRST + fsc; |
krishanprajapat | 71:9193fbdaa3e1 | 165 | result= disk_write(buffer,block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 166 | return result; |
krishanprajapat | 71:9193fbdaa3e1 | 167 | } |
krishanprajapat | 71:9193fbdaa3e1 | 168 | if(sid==0x2) |
krishanprajapat | 71:9193fbdaa3e1 | 169 | { |
krishanprajapat | 71:9193fbdaa3e1 | 170 | block_number=SD_SFF_BT_FIRST + fsc; |
krishanprajapat | 71:9193fbdaa3e1 | 171 | result= disk_write(buffer,block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 172 | return result; |
krishanprajapat | 71:9193fbdaa3e1 | 173 | } |
krishanprajapat | 71:9193fbdaa3e1 | 174 | if(sid==0x3) |
krishanprajapat | 71:9193fbdaa3e1 | 175 | { |
krishanprajapat | 71:9193fbdaa3e1 | 176 | block_number=SD_HK_ARCH_FIRST+fsc; |
krishanprajapat | 71:9193fbdaa3e1 | 177 | // sd1.printf("Block number is %d \r\n",block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 178 | result= disk_write(buffer,block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 179 | return result; |
krishanprajapat | 71:9193fbdaa3e1 | 180 | } |
krishanprajapat | 71:9193fbdaa3e1 | 181 | if(sid==0x4) |
krishanprajapat | 71:9193fbdaa3e1 | 182 | { |
krishanprajapat | 71:9193fbdaa3e1 | 183 | block_number=LOG_FIRST +fsc; |
krishanprajapat | 71:9193fbdaa3e1 | 184 | result= disk_write(buffer,block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 185 | return result; |
krishanprajapat | 71:9193fbdaa3e1 | 186 | } |
krishanprajapat | 71:9193fbdaa3e1 | 187 | return 1; |
krishanprajapat | 71:9193fbdaa3e1 | 188 | } |
krishanprajapat | 71:9193fbdaa3e1 | 189 | |
krishanprajapat | 71:9193fbdaa3e1 | 190 | int SD_READ(uint8_t* buffer,uint8_t fsc,uint8_t sid) |
krishanprajapat | 71:9193fbdaa3e1 | 191 | { |
krishanprajapat | 71:9193fbdaa3e1 | 192 | |
krishanprajapat | 71:9193fbdaa3e1 | 193 | uint32_t SD_SCP_FIRST=1001; |
krishanprajapat | 71:9193fbdaa3e1 | 194 | uint32_t SD_SCP_LAST=2000; |
krishanprajapat | 71:9193fbdaa3e1 | 195 | uint32_t SD_SFF_AT_FIRST=2001; |
krishanprajapat | 71:9193fbdaa3e1 | 196 | uint32_t SD_SFF_AT_LAST = 3000; |
krishanprajapat | 71:9193fbdaa3e1 | 197 | uint32_t SD_SFF_BT_FIRST =3001; |
krishanprajapat | 71:9193fbdaa3e1 | 198 | uint32_t SD_SFF_BT_LAST=4000; |
krishanprajapat | 71:9193fbdaa3e1 | 199 | uint32_t SD_HK_ARCH_FIRST=4001; |
krishanprajapat | 71:9193fbdaa3e1 | 200 | uint32_t SD_HK_ARCH_LAST= 5000; |
krishanprajapat | 71:9193fbdaa3e1 | 201 | uint32_t LOG_FIRST =5001; |
krishanprajapat | 71:9193fbdaa3e1 | 202 | uint32_t LOG_LAST=6000; |
krishanprajapat | 71:9193fbdaa3e1 | 203 | uint32_t SD_MNG_SECT=7000; |
krishanprajapat | 71:9193fbdaa3e1 | 204 | uint32_t block_number; |
krishanprajapat | 71:9193fbdaa3e1 | 205 | int result; |
krishanprajapat | 71:9193fbdaa3e1 | 206 | if(sid==0x0) |
krishanprajapat | 71:9193fbdaa3e1 | 207 | { |
krishanprajapat | 71:9193fbdaa3e1 | 208 | block_number=SD_SCP_FIRST + uint32_t(fsc); |
krishanprajapat | 71:9193fbdaa3e1 | 209 | // sd1.printf("read_block_number=%d\r\n",block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 210 | result= disk_read(buffer,block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 211 | } |
krishanprajapat | 71:9193fbdaa3e1 | 212 | else if(sid==0x1) |
krishanprajapat | 71:9193fbdaa3e1 | 213 | { |
krishanprajapat | 71:9193fbdaa3e1 | 214 | block_number=SD_SFF_AT_FIRST + fsc; |
krishanprajapat | 71:9193fbdaa3e1 | 215 | result= disk_read(buffer,block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 216 | } |
krishanprajapat | 71:9193fbdaa3e1 | 217 | else if(sid==0x2) |
krishanprajapat | 71:9193fbdaa3e1 | 218 | { |
krishanprajapat | 71:9193fbdaa3e1 | 219 | block_number=SD_SFF_BT_FIRST + fsc; |
krishanprajapat | 71:9193fbdaa3e1 | 220 | result= disk_read(buffer,block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 221 | } |
krishanprajapat | 71:9193fbdaa3e1 | 222 | else if(sid==0x3) |
krishanprajapat | 71:9193fbdaa3e1 | 223 | { |
krishanprajapat | 71:9193fbdaa3e1 | 224 | block_number=SD_HK_ARCH_FIRST + fsc; |
krishanprajapat | 71:9193fbdaa3e1 | 225 | result= disk_read(buffer,block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 226 | } |
krishanprajapat | 71:9193fbdaa3e1 | 227 | else if(sid==0x4) |
krishanprajapat | 71:9193fbdaa3e1 | 228 | { |
krishanprajapat | 71:9193fbdaa3e1 | 229 | block_number=LOG_FIRST +fsc; |
krishanprajapat | 71:9193fbdaa3e1 | 230 | result= disk_read(buffer,block_number); |
krishanprajapat | 71:9193fbdaa3e1 | 231 | } |
krishanprajapat | 71:9193fbdaa3e1 | 232 | else |
krishanprajapat | 71:9193fbdaa3e1 | 233 | { |
krishanprajapat | 71:9193fbdaa3e1 | 234 | return 1; |
krishanprajapat | 71:9193fbdaa3e1 | 235 | } |
krishanprajapat | 71:9193fbdaa3e1 | 236 | return result; |
krishanprajapat | 71:9193fbdaa3e1 | 237 | } |
krishanprajapat | 71:9193fbdaa3e1 | 238 | |
krishanprajapat | 71:9193fbdaa3e1 | 239 | |
krishanprajapat | 71:9193fbdaa3e1 | 240 | int initialise_card() |
krishanprajapat | 71:9193fbdaa3e1 | 241 | { |
krishanprajapat | 71:9193fbdaa3e1 | 242 | // Set to 100kHz for initialisation, and clock card with cs_sd = 1 |
krishanprajapat | 71:9193fbdaa3e1 | 243 | spi.frequency(100000); // changed on 31 12 2015 to 1 MHz |
krishanprajapat | 71:9193fbdaa3e1 | 244 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 245 | for (int i = 0; i < 16; i++) { |
krishanprajapat | 71:9193fbdaa3e1 | 246 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 247 | } |
krishanprajapat | 71:9193fbdaa3e1 | 248 | |
krishanprajapat | 71:9193fbdaa3e1 | 249 | // send CMD0, should return with all zeros except IDLE STATE set (bit 0) |
krishanprajapat | 71:9193fbdaa3e1 | 250 | if (cmd(0, 0) != R1_IDLE_STATE) { |
krishanprajapat | 71:9193fbdaa3e1 | 251 | debug("No disk, or could not put SD card in to spi idle state\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 252 | return SDCARD_FAIL; |
krishanprajapat | 71:9193fbdaa3e1 | 253 | } |
krishanprajapat | 71:9193fbdaa3e1 | 254 | |
krishanprajapat | 71:9193fbdaa3e1 | 255 | // send CMD8 to determine whther it is ver 2.x |
krishanprajapat | 71:9193fbdaa3e1 | 256 | int r = cmd8(); |
krishanprajapat | 71:9193fbdaa3e1 | 257 | if (r == R1_IDLE_STATE) { |
krishanprajapat | 71:9193fbdaa3e1 | 258 | printf("\rEntering v2\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 259 | return initialise_card_v2(); |
krishanprajapat | 71:9193fbdaa3e1 | 260 | |
krishanprajapat | 71:9193fbdaa3e1 | 261 | } else if (r == (R1_IDLE_STATE | R1_ILLEGAL_COMMAND)) { |
krishanprajapat | 71:9193fbdaa3e1 | 262 | printf("\rEntering v1\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 263 | return initialise_card_v1(); |
krishanprajapat | 71:9193fbdaa3e1 | 264 | |
krishanprajapat | 71:9193fbdaa3e1 | 265 | } else { |
krishanprajapat | 71:9193fbdaa3e1 | 266 | debug("\rNot in idle state after sending CMD8 (not an SD card?)\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 267 | return SDCARD_FAIL; |
krishanprajapat | 71:9193fbdaa3e1 | 268 | } |
krishanprajapat | 71:9193fbdaa3e1 | 269 | } |
krishanprajapat | 71:9193fbdaa3e1 | 270 | |
krishanprajapat | 71:9193fbdaa3e1 | 271 | int initialise_card_v1() |
krishanprajapat | 71:9193fbdaa3e1 | 272 | { |
krishanprajapat | 71:9193fbdaa3e1 | 273 | for (int i = 0; i < SD_COMMAND_TIMEOUT; i++) { |
krishanprajapat | 71:9193fbdaa3e1 | 274 | cmd(55, 0); |
krishanprajapat | 71:9193fbdaa3e1 | 275 | if (cmd(41, 0) == 0) { |
krishanprajapat | 71:9193fbdaa3e1 | 276 | printf("\rv1 initialization successfull\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 277 | cdv = 512; |
krishanprajapat | 71:9193fbdaa3e1 | 278 | debug_if(SD_DBG, "\n\rInit: SEDCARD_V1\n\r"); |
krishanprajapat | 71:9193fbdaa3e1 | 279 | |
krishanprajapat | 71:9193fbdaa3e1 | 280 | return SDCARD_V1; |
krishanprajapat | 71:9193fbdaa3e1 | 281 | } |
krishanprajapat | 71:9193fbdaa3e1 | 282 | } |
krishanprajapat | 71:9193fbdaa3e1 | 283 | |
krishanprajapat | 71:9193fbdaa3e1 | 284 | debug("\rTimeout waiting for v1.x card\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 285 | return SDCARD_FAIL; |
krishanprajapat | 71:9193fbdaa3e1 | 286 | } |
krishanprajapat | 71:9193fbdaa3e1 | 287 | |
krishanprajapat | 71:9193fbdaa3e1 | 288 | |
krishanprajapat | 71:9193fbdaa3e1 | 289 | int initialise_card_v2() |
krishanprajapat | 71:9193fbdaa3e1 | 290 | { |
krishanprajapat | 71:9193fbdaa3e1 | 291 | for (int i = 0; i < SD_COMMAND_TIMEOUT; i++) { |
krishanprajapat | 71:9193fbdaa3e1 | 292 | wait_ms(50); |
krishanprajapat | 71:9193fbdaa3e1 | 293 | cmd58(); |
krishanprajapat | 71:9193fbdaa3e1 | 294 | cmd(55, 0); |
krishanprajapat | 71:9193fbdaa3e1 | 295 | if (cmd(41, 0x40000000) == 0) { |
krishanprajapat | 71:9193fbdaa3e1 | 296 | printf("\rv2 initialization successfull\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 297 | cmd58(); |
krishanprajapat | 71:9193fbdaa3e1 | 298 | debug_if(SD_DBG, "\n\rInit: SDCARD_V2\n\r"); |
krishanprajapat | 71:9193fbdaa3e1 | 299 | cdv = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 300 | |
krishanprajapat | 71:9193fbdaa3e1 | 301 | return SDCARD_V2; |
krishanprajapat | 71:9193fbdaa3e1 | 302 | } |
krishanprajapat | 71:9193fbdaa3e1 | 303 | } |
krishanprajapat | 71:9193fbdaa3e1 | 304 | |
krishanprajapat | 71:9193fbdaa3e1 | 305 | debug("\rTimeout waiting for v2.x card\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 306 | return SDCARD_FAIL; |
krishanprajapat | 71:9193fbdaa3e1 | 307 | } |
krishanprajapat | 71:9193fbdaa3e1 | 308 | |
krishanprajapat | 71:9193fbdaa3e1 | 309 | int cmd(int cmd, int arg) |
krishanprajapat | 71:9193fbdaa3e1 | 310 | { |
krishanprajapat | 71:9193fbdaa3e1 | 311 | cs_sd = 0; |
krishanprajapat | 71:9193fbdaa3e1 | 312 | |
krishanprajapat | 71:9193fbdaa3e1 | 313 | // send a command |
krishanprajapat | 71:9193fbdaa3e1 | 314 | spi.write(0x40 | cmd); |
krishanprajapat | 71:9193fbdaa3e1 | 315 | spi.write(arg >> 24); |
krishanprajapat | 71:9193fbdaa3e1 | 316 | spi.write(arg >> 16); |
krishanprajapat | 71:9193fbdaa3e1 | 317 | spi.write(arg >> 8); |
krishanprajapat | 71:9193fbdaa3e1 | 318 | spi.write(arg >> 0); |
krishanprajapat | 71:9193fbdaa3e1 | 319 | spi.write(0x95); |
krishanprajapat | 71:9193fbdaa3e1 | 320 | |
krishanprajapat | 71:9193fbdaa3e1 | 321 | // wait for the repsonse (response[7] == 0) |
krishanprajapat | 71:9193fbdaa3e1 | 322 | for (int i = 0; i < SD_COMMAND_TIMEOUT; i++) { |
krishanprajapat | 71:9193fbdaa3e1 | 323 | int response = spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 324 | if (!(response & 0x80)) { |
krishanprajapat | 71:9193fbdaa3e1 | 325 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 326 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 327 | return response; |
krishanprajapat | 71:9193fbdaa3e1 | 328 | } |
krishanprajapat | 71:9193fbdaa3e1 | 329 | } |
krishanprajapat | 71:9193fbdaa3e1 | 330 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 331 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 332 | return -1; // timeout |
krishanprajapat | 71:9193fbdaa3e1 | 333 | } |
krishanprajapat | 71:9193fbdaa3e1 | 334 | |
krishanprajapat | 71:9193fbdaa3e1 | 335 | |
krishanprajapat | 71:9193fbdaa3e1 | 336 | int cmd58() |
krishanprajapat | 71:9193fbdaa3e1 | 337 | { |
krishanprajapat | 71:9193fbdaa3e1 | 338 | cs_sd = 0; |
krishanprajapat | 71:9193fbdaa3e1 | 339 | int arg = 0; |
krishanprajapat | 71:9193fbdaa3e1 | 340 | |
krishanprajapat | 71:9193fbdaa3e1 | 341 | // send a command |
krishanprajapat | 71:9193fbdaa3e1 | 342 | spi.write(0x40 | 58); |
krishanprajapat | 71:9193fbdaa3e1 | 343 | spi.write(arg >> 24); |
krishanprajapat | 71:9193fbdaa3e1 | 344 | spi.write(arg >> 16); |
krishanprajapat | 71:9193fbdaa3e1 | 345 | spi.write(arg >> 8); |
krishanprajapat | 71:9193fbdaa3e1 | 346 | spi.write(arg >> 0); |
krishanprajapat | 71:9193fbdaa3e1 | 347 | spi.write(0x95); |
krishanprajapat | 71:9193fbdaa3e1 | 348 | |
krishanprajapat | 71:9193fbdaa3e1 | 349 | // wait for the repsonse (response[7] == 0) |
krishanprajapat | 71:9193fbdaa3e1 | 350 | for (int i = 0; i < SD_COMMAND_TIMEOUT; i++) { |
krishanprajapat | 71:9193fbdaa3e1 | 351 | int response = spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 352 | if (!(response & 0x80)) { |
krishanprajapat | 71:9193fbdaa3e1 | 353 | int ocr = spi.write(0xFF) << 24; |
krishanprajapat | 71:9193fbdaa3e1 | 354 | ocr |= spi.write(0xFF) << 16; |
krishanprajapat | 71:9193fbdaa3e1 | 355 | ocr |= spi.write(0xFF) << 8; |
krishanprajapat | 71:9193fbdaa3e1 | 356 | ocr |= spi.write(0xFF) << 0; |
krishanprajapat | 71:9193fbdaa3e1 | 357 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 358 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 359 | return response; |
krishanprajapat | 71:9193fbdaa3e1 | 360 | } |
krishanprajapat | 71:9193fbdaa3e1 | 361 | } |
krishanprajapat | 71:9193fbdaa3e1 | 362 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 363 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 364 | return -1; // timeout |
krishanprajapat | 71:9193fbdaa3e1 | 365 | } |
krishanprajapat | 71:9193fbdaa3e1 | 366 | |
krishanprajapat | 71:9193fbdaa3e1 | 367 | |
krishanprajapat | 71:9193fbdaa3e1 | 368 | int cmd8() |
krishanprajapat | 71:9193fbdaa3e1 | 369 | { |
krishanprajapat | 71:9193fbdaa3e1 | 370 | cs_sd = 0; |
krishanprajapat | 71:9193fbdaa3e1 | 371 | |
krishanprajapat | 71:9193fbdaa3e1 | 372 | // send a command |
krishanprajapat | 71:9193fbdaa3e1 | 373 | spi.write(0x40 | 8); // CMD8 |
krishanprajapat | 71:9193fbdaa3e1 | 374 | spi.write(0x00); // reserved |
krishanprajapat | 71:9193fbdaa3e1 | 375 | spi.write(0x00); // reserved |
krishanprajapat | 71:9193fbdaa3e1 | 376 | spi.write(0x01); // 3.3v |
krishanprajapat | 71:9193fbdaa3e1 | 377 | spi.write(0xAA); // check pattern |
krishanprajapat | 71:9193fbdaa3e1 | 378 | spi.write(0x87); // crc |
krishanprajapat | 71:9193fbdaa3e1 | 379 | |
krishanprajapat | 71:9193fbdaa3e1 | 380 | // wait for the repsonse (response[7] == 0) |
krishanprajapat | 71:9193fbdaa3e1 | 381 | for (int i = 0; i < SD_COMMAND_TIMEOUT * 1000; i++) { |
krishanprajapat | 71:9193fbdaa3e1 | 382 | char response[5]; |
krishanprajapat | 71:9193fbdaa3e1 | 383 | response[0] = spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 384 | if (!(response[0] & 0x80)) { |
krishanprajapat | 71:9193fbdaa3e1 | 385 | for (int j = 1; j < 5; j++) { |
krishanprajapat | 71:9193fbdaa3e1 | 386 | response[i] = spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 387 | } |
krishanprajapat | 71:9193fbdaa3e1 | 388 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 389 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 390 | return response[0]; |
krishanprajapat | 71:9193fbdaa3e1 | 391 | } |
krishanprajapat | 71:9193fbdaa3e1 | 392 | } |
krishanprajapat | 71:9193fbdaa3e1 | 393 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 394 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 395 | return -1; // timeout |
krishanprajapat | 71:9193fbdaa3e1 | 396 | } |
krishanprajapat | 71:9193fbdaa3e1 | 397 | |
krishanprajapat | 71:9193fbdaa3e1 | 398 | uint64_t sd_sectors() |
krishanprajapat | 71:9193fbdaa3e1 | 399 | { |
krishanprajapat | 71:9193fbdaa3e1 | 400 | uint32_t c_size, c_size_mult, read_bl_len; |
krishanprajapat | 71:9193fbdaa3e1 | 401 | uint32_t block_len, mult, blocknr, capacity; |
krishanprajapat | 71:9193fbdaa3e1 | 402 | uint32_t hc_c_size; |
krishanprajapat | 71:9193fbdaa3e1 | 403 | uint64_t blocks; |
krishanprajapat | 71:9193fbdaa3e1 | 404 | |
krishanprajapat | 71:9193fbdaa3e1 | 405 | // CMD9, Response R2 (R1 byte + 16-byte block read) |
krishanprajapat | 71:9193fbdaa3e1 | 406 | if (cmdx(9, 0) != 0) { |
krishanprajapat | 71:9193fbdaa3e1 | 407 | debug("\rDidn't get a response from the disk\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 408 | return 0; |
krishanprajapat | 71:9193fbdaa3e1 | 409 | } |
krishanprajapat | 71:9193fbdaa3e1 | 410 | |
krishanprajapat | 71:9193fbdaa3e1 | 411 | uint8_t cs_sdd[16]; |
krishanprajapat | 71:9193fbdaa3e1 | 412 | if (read(cs_sdd, 16) != 0) { |
krishanprajapat | 71:9193fbdaa3e1 | 413 | debug("\rCouldn't read cs_sdd response from disk\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 414 | return 0; |
krishanprajapat | 71:9193fbdaa3e1 | 415 | } |
krishanprajapat | 71:9193fbdaa3e1 | 416 | |
krishanprajapat | 71:9193fbdaa3e1 | 417 | // cs_sdd_structure : cs_sdd[127:126] |
krishanprajapat | 71:9193fbdaa3e1 | 418 | // c_size : cs_sdd[73:62] |
krishanprajapat | 71:9193fbdaa3e1 | 419 | // c_size_mult : cs_sdd[49:47] |
krishanprajapat | 71:9193fbdaa3e1 | 420 | // read_bl_len : cs_sdd[83:80] - the *maximum* read block length |
krishanprajapat | 71:9193fbdaa3e1 | 421 | |
krishanprajapat | 71:9193fbdaa3e1 | 422 | int cs_sdd_structure = ext_bits(cs_sdd, 127, 126); |
krishanprajapat | 71:9193fbdaa3e1 | 423 | |
krishanprajapat | 71:9193fbdaa3e1 | 424 | switch (cs_sdd_structure) { |
krishanprajapat | 71:9193fbdaa3e1 | 425 | case 0: |
krishanprajapat | 71:9193fbdaa3e1 | 426 | cdv = 512; |
krishanprajapat | 71:9193fbdaa3e1 | 427 | c_size = ext_bits(cs_sdd, 73, 62); |
krishanprajapat | 71:9193fbdaa3e1 | 428 | c_size_mult = ext_bits(cs_sdd, 49, 47); |
krishanprajapat | 71:9193fbdaa3e1 | 429 | read_bl_len = ext_bits(cs_sdd, 83, 80); |
krishanprajapat | 71:9193fbdaa3e1 | 430 | |
krishanprajapat | 71:9193fbdaa3e1 | 431 | block_len = 1 << read_bl_len; |
krishanprajapat | 71:9193fbdaa3e1 | 432 | mult = 1 << (c_size_mult + 2); |
krishanprajapat | 71:9193fbdaa3e1 | 433 | blocknr = (c_size + 1) * mult; |
krishanprajapat | 71:9193fbdaa3e1 | 434 | capacity = blocknr * block_len; |
krishanprajapat | 71:9193fbdaa3e1 | 435 | blocks = capacity / 512; |
krishanprajapat | 71:9193fbdaa3e1 | 436 | debug_if(SD_DBG, "\n\rSDCard\n\rc_size: %d \n\rcapacity: %ld \n\rsectors: %lld\n\r", c_size, capacity, blocks); |
krishanprajapat | 71:9193fbdaa3e1 | 437 | break; |
krishanprajapat | 71:9193fbdaa3e1 | 438 | |
krishanprajapat | 71:9193fbdaa3e1 | 439 | case 1: |
krishanprajapat | 71:9193fbdaa3e1 | 440 | cdv = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 441 | hc_c_size = ext_bits(cs_sdd, 63, 48); |
krishanprajapat | 71:9193fbdaa3e1 | 442 | blocks = (hc_c_size+1)*1024; |
krishanprajapat | 71:9193fbdaa3e1 | 443 | debug_if(SD_DBG, "\n\rSDHC Card \n\rhc_c_size: %d\n\rcapacity: %lld \n\rsectors: %lld\n\r", hc_c_size, blocks*512, blocks); |
krishanprajapat | 71:9193fbdaa3e1 | 444 | break; |
krishanprajapat | 71:9193fbdaa3e1 | 445 | |
krishanprajapat | 71:9193fbdaa3e1 | 446 | default: |
krishanprajapat | 71:9193fbdaa3e1 | 447 | debug("cs_sdD struct unsupported\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 448 | return 0; |
krishanprajapat | 71:9193fbdaa3e1 | 449 | }; |
krishanprajapat | 71:9193fbdaa3e1 | 450 | return blocks; |
krishanprajapat | 71:9193fbdaa3e1 | 451 | } |
krishanprajapat | 71:9193fbdaa3e1 | 452 | |
krishanprajapat | 71:9193fbdaa3e1 | 453 | int cmdx(int cmd, int arg) |
krishanprajapat | 71:9193fbdaa3e1 | 454 | { |
krishanprajapat | 71:9193fbdaa3e1 | 455 | cs_sd = 0; |
krishanprajapat | 71:9193fbdaa3e1 | 456 | |
krishanprajapat | 71:9193fbdaa3e1 | 457 | // send a command |
krishanprajapat | 71:9193fbdaa3e1 | 458 | spi.write(0x40 | cmd); |
krishanprajapat | 71:9193fbdaa3e1 | 459 | spi.write(arg >> 24); |
krishanprajapat | 71:9193fbdaa3e1 | 460 | spi.write(arg >> 16); |
krishanprajapat | 71:9193fbdaa3e1 | 461 | spi.write(arg >> 8); |
krishanprajapat | 71:9193fbdaa3e1 | 462 | spi.write(arg >> 0); |
krishanprajapat | 71:9193fbdaa3e1 | 463 | spi.write(0x95); |
krishanprajapat | 71:9193fbdaa3e1 | 464 | |
krishanprajapat | 71:9193fbdaa3e1 | 465 | // wait for the repsonse (response[7] == 0) |
krishanprajapat | 71:9193fbdaa3e1 | 466 | for (int i = 0; i < SD_COMMAND_TIMEOUT; i++) { |
krishanprajapat | 71:9193fbdaa3e1 | 467 | int response = spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 468 | if (!(response & 0x80)) { |
krishanprajapat | 71:9193fbdaa3e1 | 469 | return response; |
krishanprajapat | 71:9193fbdaa3e1 | 470 | } |
krishanprajapat | 71:9193fbdaa3e1 | 471 | } |
krishanprajapat | 71:9193fbdaa3e1 | 472 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 473 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 474 | return -1; // timeout |
krishanprajapat | 71:9193fbdaa3e1 | 475 | } |
krishanprajapat | 71:9193fbdaa3e1 | 476 | |
krishanprajapat | 71:9193fbdaa3e1 | 477 | static uint32_t ext_bits(unsigned char *data, int msb, int lsb) |
krishanprajapat | 71:9193fbdaa3e1 | 478 | { |
krishanprajapat | 71:9193fbdaa3e1 | 479 | uint32_t bits = 0; |
krishanprajapat | 71:9193fbdaa3e1 | 480 | uint32_t size = 1 + msb - lsb; |
krishanprajapat | 71:9193fbdaa3e1 | 481 | for (int i = 0; i < size; i++) { |
krishanprajapat | 71:9193fbdaa3e1 | 482 | uint32_t position = lsb + i; |
krishanprajapat | 71:9193fbdaa3e1 | 483 | uint32_t byte = 15 - (position >> 3); |
krishanprajapat | 71:9193fbdaa3e1 | 484 | uint32_t bit = position & 0x7; |
krishanprajapat | 71:9193fbdaa3e1 | 485 | uint32_t value = (data[byte] >> bit) & 1; |
krishanprajapat | 71:9193fbdaa3e1 | 486 | bits |= value << i; |
krishanprajapat | 71:9193fbdaa3e1 | 487 | } |
krishanprajapat | 71:9193fbdaa3e1 | 488 | return bits; |
krishanprajapat | 71:9193fbdaa3e1 | 489 | } |
krishanprajapat | 71:9193fbdaa3e1 | 490 | |
krishanprajapat | 71:9193fbdaa3e1 | 491 | int disk_initialize() |
krishanprajapat | 71:9193fbdaa3e1 | 492 | { |
krishanprajapat | 71:9193fbdaa3e1 | 493 | int i = initialise_card(); |
krishanprajapat | 71:9193fbdaa3e1 | 494 | debug_if(SD_DBG, "init card = %d\n", i); |
krishanprajapat | 71:9193fbdaa3e1 | 495 | sectors = sd_sectors(); |
krishanprajapat | 71:9193fbdaa3e1 | 496 | |
krishanprajapat | 71:9193fbdaa3e1 | 497 | // Set block length to 512 (CMD16) |
krishanprajapat | 71:9193fbdaa3e1 | 498 | if (cmd(16, 512) != 0) { |
krishanprajapat | 71:9193fbdaa3e1 | 499 | debug("\rSet 512-byte block timed out\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 500 | return 1; |
krishanprajapat | 71:9193fbdaa3e1 | 501 | } else { |
krishanprajapat | 71:9193fbdaa3e1 | 502 | printf("\rDisk initialization successfull\r\n"); |
krishanprajapat | 71:9193fbdaa3e1 | 503 | } |
krishanprajapat | 71:9193fbdaa3e1 | 504 | |
krishanprajapat | 71:9193fbdaa3e1 | 505 | spi.frequency(1000000); // Set to 1MHz for data transfer |
krishanprajapat | 71:9193fbdaa3e1 | 506 | return 0; |
krishanprajapat | 71:9193fbdaa3e1 | 507 | } |
krishanprajapat | 71:9193fbdaa3e1 | 508 | |
krishanprajapat | 71:9193fbdaa3e1 | 509 | int disk_write(const uint8_t *buffer, uint64_t block_number) |
krishanprajapat | 71:9193fbdaa3e1 | 510 | |
krishanprajapat | 71:9193fbdaa3e1 | 511 | { |
krishanprajapat | 71:9193fbdaa3e1 | 512 | // set write address for single block (CMD24) |
krishanprajapat | 71:9193fbdaa3e1 | 513 | if (cmd(24, block_number * cdv) != 0) { |
krishanprajapat | 71:9193fbdaa3e1 | 514 | return 1; |
krishanprajapat | 71:9193fbdaa3e1 | 515 | } |
krishanprajapat | 71:9193fbdaa3e1 | 516 | |
krishanprajapat | 71:9193fbdaa3e1 | 517 | // send the data block |
krishanprajapat | 71:9193fbdaa3e1 | 518 | write(buffer, 512); |
krishanprajapat | 71:9193fbdaa3e1 | 519 | //printf("Written Successfully bro \n"); |
krishanprajapat | 71:9193fbdaa3e1 | 520 | return 0; |
krishanprajapat | 71:9193fbdaa3e1 | 521 | } |
krishanprajapat | 71:9193fbdaa3e1 | 522 | |
krishanprajapat | 71:9193fbdaa3e1 | 523 | int write(const uint8_t*buffer, uint32_t length) |
krishanprajapat | 71:9193fbdaa3e1 | 524 | { |
krishanprajapat | 71:9193fbdaa3e1 | 525 | cs_sd = 0; |
krishanprajapat | 71:9193fbdaa3e1 | 526 | |
krishanprajapat | 71:9193fbdaa3e1 | 527 | // indicate start of block |
krishanprajapat | 71:9193fbdaa3e1 | 528 | spi.write(0xFE); |
krishanprajapat | 71:9193fbdaa3e1 | 529 | |
krishanprajapat | 71:9193fbdaa3e1 | 530 | // write the data |
krishanprajapat | 71:9193fbdaa3e1 | 531 | for (int i = 0; i < length; i++) { |
krishanprajapat | 71:9193fbdaa3e1 | 532 | spi.write(buffer[i]); |
krishanprajapat | 71:9193fbdaa3e1 | 533 | } |
krishanprajapat | 71:9193fbdaa3e1 | 534 | |
krishanprajapat | 71:9193fbdaa3e1 | 535 | // write the checksum |
krishanprajapat | 71:9193fbdaa3e1 | 536 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 537 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 538 | |
krishanprajapat | 71:9193fbdaa3e1 | 539 | // check the response token |
krishanprajapat | 71:9193fbdaa3e1 | 540 | if ((spi.write(0xFF) & 0x1F) != 0x05) { |
krishanprajapat | 71:9193fbdaa3e1 | 541 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 542 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 543 | return 1; |
krishanprajapat | 71:9193fbdaa3e1 | 544 | } |
krishanprajapat | 71:9193fbdaa3e1 | 545 | |
krishanprajapat | 71:9193fbdaa3e1 | 546 | // wait for write to finish |
krishanprajapat | 71:9193fbdaa3e1 | 547 | while (spi.write(0xFF) == 0); |
krishanprajapat | 71:9193fbdaa3e1 | 548 | |
krishanprajapat | 71:9193fbdaa3e1 | 549 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 550 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 551 | return 0; |
krishanprajapat | 71:9193fbdaa3e1 | 552 | } |
krishanprajapat | 71:9193fbdaa3e1 | 553 | |
krishanprajapat | 71:9193fbdaa3e1 | 554 | int disk_read(uint8_t *buffer, uint64_t block_number) |
krishanprajapat | 71:9193fbdaa3e1 | 555 | { |
krishanprajapat | 71:9193fbdaa3e1 | 556 | // set read address for single block (CMD17) |
krishanprajapat | 71:9193fbdaa3e1 | 557 | if (cmd(17, block_number * cdv) != 0) { |
krishanprajapat | 71:9193fbdaa3e1 | 558 | return 1; |
krishanprajapat | 71:9193fbdaa3e1 | 559 | } |
krishanprajapat | 71:9193fbdaa3e1 | 560 | |
krishanprajapat | 71:9193fbdaa3e1 | 561 | // receive the data |
krishanprajapat | 71:9193fbdaa3e1 | 562 | read(buffer, 512); |
krishanprajapat | 71:9193fbdaa3e1 | 563 | return 0; |
krishanprajapat | 71:9193fbdaa3e1 | 564 | } |
krishanprajapat | 71:9193fbdaa3e1 | 565 | |
krishanprajapat | 71:9193fbdaa3e1 | 566 | int read(uint8_t *buffer, uint32_t length) |
krishanprajapat | 71:9193fbdaa3e1 | 567 | { |
krishanprajapat | 71:9193fbdaa3e1 | 568 | cs_sd = 0; |
krishanprajapat | 71:9193fbdaa3e1 | 569 | |
krishanprajapat | 71:9193fbdaa3e1 | 570 | // read until start byte (0xFF) |
krishanprajapat | 71:9193fbdaa3e1 | 571 | while (spi.write(0xFF) != 0xFE); |
krishanprajapat | 71:9193fbdaa3e1 | 572 | |
krishanprajapat | 71:9193fbdaa3e1 | 573 | // read data |
krishanprajapat | 71:9193fbdaa3e1 | 574 | for (int i = 0; i < length; i++) { |
krishanprajapat | 71:9193fbdaa3e1 | 575 | buffer[i] = spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 576 | } |
krishanprajapat | 71:9193fbdaa3e1 | 577 | spi.write(0xFF); // checksum |
krishanprajapat | 71:9193fbdaa3e1 | 578 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 579 | |
krishanprajapat | 71:9193fbdaa3e1 | 580 | cs_sd = 1; |
krishanprajapat | 71:9193fbdaa3e1 | 581 | spi.write(0xFF); |
krishanprajapat | 71:9193fbdaa3e1 | 582 | return 0; |
krishanprajapat | 71:9193fbdaa3e1 | 583 | } |
krishanprajapat | 71:9193fbdaa3e1 | 584 | |
krishanprajapat | 71:9193fbdaa3e1 | 585 | int disk_erase(int startBlock, int totalBlocks) |
krishanprajapat | 71:9193fbdaa3e1 | 586 | { |
krishanprajapat | 71:9193fbdaa3e1 | 587 | if(cmd(32, startBlock * cdv) != 0) { |
krishanprajapat | 71:9193fbdaa3e1 | 588 | return 1; |
krishanprajapat | 71:9193fbdaa3e1 | 589 | } |
krishanprajapat | 71:9193fbdaa3e1 | 590 | if (cmd(33, (startBlock+totalBlocks-1) * cdv) != 0) { |
krishanprajapat | 71:9193fbdaa3e1 | 591 | return 1; |
krishanprajapat | 71:9193fbdaa3e1 | 592 | } |
krishanprajapat | 71:9193fbdaa3e1 | 593 | if (cmd(38,0) != 0) { |
krishanprajapat | 71:9193fbdaa3e1 | 594 | return 1; |
krishanprajapat | 71:9193fbdaa3e1 | 595 | } |
krishanprajapat | 71:9193fbdaa3e1 | 596 | |
krishanprajapat | 71:9193fbdaa3e1 | 597 | return 0; //normal return |
krishanprajapat | 71:9193fbdaa3e1 | 598 | } |