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52 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
52 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
53 | // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
53 | // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
54 | // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
54 | // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
55 | // + POSSIBILITY OF SUCH DAMAGE. |
55 | // + POSSIBILITY OF SUCH DAMAGE. |
56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
- | 57 | #include <stdio.h> |
|
- | 58 | #include <string.h> |
|
- | 59 | #include "91x_lib.h" |
|
- | 60 | #include "uart.h" |
|
- | 61 | #include "sdc.h" |
|
- | 62 | #include "ssc.h" |
|
- | 63 | #include "timer.h" |
|
57 | #include "main.h" |
64 | #include "main.h" |
58 | - | ||
- | 65 | #include "crc16.h" |
|
Line 59... | Line 66... | ||
59 | 66 | ||
60 | //________________________________________________________________________________________________________________________________________ |
67 | //________________________________________________________________________________________________________________________________________ |
61 | // Module name: mmc.c |
68 | // Module name: sdc.c |
62 | // Compiler used: avr-gcc 3.4.5 |
69 | // Compiler used: avr-gcc 3.4.5 |
63 | // Last Modifikation: 24.07.2007 |
70 | // Last Modifikation: 08.06.2008 |
64 | // Version: 1.05 |
71 | // Version: 1.07 |
65 | // Authors: Stephan Busker |
72 | // Authors: Stephan Busker, Gregor Stobrawa |
66 | // Description: Source files for connecting to an sdcard using the SSC |
73 | // Description: Source files for connecting to an sd-card using the SSC |
67 | // |
74 | // |
68 | //........................................................................................................................................ |
75 | //........................................................................................................................................ |
69 | // Functions: u8 SDC_init(void); |
76 | // Functions: SD_Result_t SDC_init(void); |
70 | // u8 SDC_PutCommand (u8 *CMD); |
77 | // u8 SDC_PutCommand (u8 *cmd); |
71 | // u8 SDC_PutSector(u32 addr,u8 *Buffer); |
78 | // SD_Result_t SDC_PutSector(u32 addr,u8 *Buffer); |
72 | // u8 SDC_GetSector(u32 addr,u8 *Buffer); |
- | |
73 | // void SDC_GetBlock(u8 *CMD,u8 *Buffer,u16 Bytes); |
79 | // SD_Result_t SDC_GetSector(u32 addr,u8 *Buffer); |
74 | // |
80 | // |
75 | ////........................................................................................................................................ |
81 | ////........................................................................................................................................ |
76 | // ext. functions: extern void SSC_Init(void); |
82 | // ext. functions: extern void SSC_Init(void); |
77 | // extern u8 SSC_GetChar (void); |
83 | // extern u8 SSC_GetChar (void); |
78 | // extern void SSC_PutChar (u8); |
84 | // extern void SSC_PutChar (u8); |
79 | // extern void SSC_Enable(void); |
85 | // extern void SSC_Enable(void); |
- | 86 | // extern void SSC_Disable(void); |
|
80 | // extern void SSC_Disable(void); |
87 | // extern void SSC_ClearRxFifo(); |
81 | //........................................................................................................................................ |
88 | //........................................................................................................................................ |
82 | // |
89 | // |
83 | // URL: www.Mikro-Control.de |
90 | // URL: www.Mikro-Control.de |
84 | // mailto: stephan.busker@mikro-control.de |
91 | // mailto: stephan.busker@mikro-control.de |
Line -... | Line 92... | ||
- | 92 | //________________________________________________________________________________________________________________________________________ |
|
- | 93 | ||
- | 94 | ||
- | 95 | ||
- | 96 | #define CMD_GO_IDLE_STATE 0x00 /* CMD00: response R1 */ |
|
- | 97 | #define CMD_SEND_OP_COND 0x01 /* CMD01: response R1 */ |
|
- | 98 | #define CMD_SEND_IF_COND 0x08 /* CMD08: response R7 */ |
|
- | 99 | #define CMD_SEND_CSD 0x09 /* CMD09: response R1 */ |
|
- | 100 | #define CMD_SEND_CID 0x0A /* CMD10: response R1 */ |
|
- | 101 | #define CMD_SEND_STATUS 0x0D /* CMD13: response R2 */ |
|
- | 102 | #define CMD_SET_BLOCKLEN 0x10 /* CMD16: arg0[31:0]: block length, response R1*/ |
|
- | 103 | #define CMD_READ_SINGLE_BLOCK 0x11 /* CMD17: arg0[31:0]: data address, response R1 */ |
|
- | 104 | #define CMD_WRITE_SINGLE_BLOCK 0x18 /* CMD24: arg0[31:0]: data address, response R1 */ |
|
- | 105 | #define CMD_APP_CMD 0x37 /* CMD55: response R1 */ |
|
- | 106 | #define CMD_READ_OCR 0x3A /* CMD58: response R3 */ |
|
- | 107 | #define CMD_CRC_ON_OFF 0x3B /* CMD59: arg0[31:1]: stuff bits, arg0[0:0]: crc option, response R1 */ |
|
- | 108 | #define ACMD_SEND_OP_COND 0x29 /* ACMD41: arg0[31]: stuff bits, arg0[30]: HCS, arg0[29:0] stuff bits*, response R1 */ |
|
- | 109 | ||
- | 110 | #define R1_NO_ERR 0x00 |
|
- | 111 | #define R1_IDLE_STATE 0x01 |
|
- | 112 | #define R1_ERASE_RESET 0x02 |
|
- | 113 | #define R1_ILLEGAL_CMD 0x04 |
|
- | 114 | #define R1_COM_CRC_ERR 0x08 |
|
- | 115 | #define R1_ERASE_SEQUENCE_ERR 0x10 |
|
- | 116 | #define R1_ADDRESS_ERR 0x20 |
|
- | 117 | #define R1_PARAMETER_ERR 0x40 |
|
- | 118 | #define R1_BAD_RESPONSE 0x80 |
|
- | 119 | ||
- | 120 | #define R2_NO_ERR 0x00 |
|
- | 121 | #define R2_CARD_LOCKED 0x01 |
|
- | 122 | #define R2_ERASE_WRITE_PROT_ERR 0x02 |
|
- | 123 | #define R2_UNKOWN_ERR 0x04 |
|
- | 124 | #define R2_CARD_CTRL_ERR 0x08 |
|
- | 125 | #define R2_CARD_ECC_ERR 0x10 |
|
- | 126 | #define R2_WRITE_PROT_ERR 0x20 |
|
- | 127 | #define R2_ERASE_PARAM_ERR 0x40 |
|
- | 128 | #define R2_OUT_OF_RANGE_ERR 0x80 |
|
- | 129 | ||
- | 130 | #define DATA_START_TOKEN 0xFE |
|
- | 131 | #define DATA_RESPONSE_MASK 0x1F |
|
- | 132 | #define DATA_RESPONSE_OK 0x05 |
|
- | 133 | #define DATA_RESPONSE_CRC_ERR 0x0B |
|
- | 134 | #define DATA_RESPONSE_WRITE_ERR 0x1D |
|
- | 135 | ||
- | 136 | typedef enum |
|
- | 137 | { |
|
- | 138 | VER_UNKNOWN, |
|
- | 139 | VER_1X, |
|
- | 140 | VER_20 |
|
- | 141 | } SDVersion_t; |
|
- | 142 | ||
- | 143 | typedef struct |
|
- | 144 | { |
|
- | 145 | u8 Valid; |
|
- | 146 | SDVersion_t Version; // HW-Version |
|
- | 147 | u32 Capacity; // Memory capacity in bytes |
|
- | 148 | u8 CID[16]; // CID register |
|
- | 149 | u8 CSD[16]; // CSD register |
|
Line 85... | Line 150... | ||
85 | //________________________________________________________________________________________________________________________________________ |
150 | } __attribute__((packed)) SDCardInfo_t; |
86 | 151 | ||
87 | 152 | volatile SDCardInfo_t SDCardInfo; |
|
88 | 153 | ||
89 | 154 | ||
90 | //________________________________________________________________________________________________________________________________________ |
155 | //________________________________________________________________________________________________________________________________________ |
91 | // Funtion: SDC_Init(void); |
156 | // Function: CRC7(u8* cmd, u32 len); |
92 | // |
157 | // |
Line 93... | Line 158... | ||
93 | // Description: This function initialises the SDCard to spi-mode. |
158 | // Description: This function calculated the CRC7 checksum used in the last byte of a spi command frame. |
94 | // |
159 | // |
95 | // |
- | |
96 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
- | |
97 | //________________________________________________________________________________________________________________________________________ |
- | |
98 | 160 | // |
|
99 | u8 SDC_Init(void) |
- | |
100 | { |
- | |
101 | u16 Timeout = 0; |
- | |
102 | u8 CMD[] = {0x40,0x00,0x00,0x00,0x00,0x95}; |
161 | // Returnvalue: the function returns the crc7 including bit 0 set to 1 |
Line -... | Line 162... | ||
- | 162 | //________________________________________________________________________________________________________________________________________ |
|
103 | 163 | ||
104 | u8 b; |
164 | u8 CRC7(u8 * cmd, u32 len) |
105 | 165 | { |
|
- | 166 | u8 i, a; |
|
- | 167 | u8 crc, Data; |
|
- | 168 | ||
- | 169 | crc = 0; // init CRC buffer |
|
- | 170 | for (a = 0; a < len ;a++) // for every byte in the msg |
|
- | 171 | { |
|
106 | SSC_Init(); // Initialise SSC to transmit data to the sdcard. |
172 | Data = cmd[a]; |
- | 173 | for (i=0;i<8;i++) // for every bit in the byte |
|
- | 174 | { |
|
- | 175 | crc <<= 1; // shift crc |
|
107 | SerialPutString("Init SD..."); |
176 | if ((Data & 0x80)^(crc & 0x80)) crc ^=0x09; //xor |
- | 177 | Data <<= 1; // shift data for next bit |
|
- | 178 | } |
|
- | 179 | } |
|
- | 180 | crc = (crc<<1)|1; // set terminating bit to 1 |
|
- | 181 | return(crc); |
|
108 | // Delay_ms(10); |
182 | } |
109 | 183 | ||
- | 184 | u8 SDC_WaitForBusy() |
|
110 | for (b = 0;b<0x0f;b++) // sending 74Clocks brings the sdcard into spimode. |
185 | { |
- | 186 | u8 rsp = 0; |
|
111 | { |
187 | u16 timeout=0; |
- | 188 | ||
- | 189 | SSC_ClearRxFifo(); |
|
- | 190 | SSC_Enable(); // enable chipselect. |
|
- | 191 | do |
|
- | 192 | { |
|
- | 193 | rsp = SSC_GetChar(); |
|
- | 194 | if(timeout++>500) break; |
|
- | 195 | }while(rsp != 0xFF); // wait while card is busy (data out low) |
|
- | 196 | return(rsp); |
|
- | 197 | } |
|
- | 198 | ||
- | 199 | ||
- | 200 | ||
- | 201 | //________________________________________________________________________________________________________________________________________ |
|
- | 202 | // Function: SDC_SendCMDR1(u8 CmdNo, u32 arg); |
|
112 | SSC_PutChar(0xff); |
203 | // |
- | 204 | // Description: This function send a command frame to the SD-Card in spi-mode. |
|
- | 205 | // |
|
- | 206 | // |
|
- | 207 | // Returnvalue: The function returns the first response byte like for R1 commands |
|
113 | } |
208 | //________________________________________________________________________________________________________________________________________ |
- | 209 | u8 SDC_SendCMDR1(u8 CmdNo, u32 arg) |
|
- | 210 | { |
|
114 | 211 | u8 r1; |
|
- | 212 | u16 Timeout = 0; |
|
- | 213 | u16 a; |
|
- | 214 | u8 cmd[6]; |
|
- | 215 | ||
- | 216 | SSC_ClearRxFifo(); // clear the rx fifo |
|
- | 217 | SSC_Enable(); // enable chipselect. |
|
- | 218 | SDC_WaitForBusy(); |
|
- | 219 | SSC_ClearRxFifo(); // clear the rx fifo |
|
- | 220 | SSC_GetChar(); // dummy to sync |
|
- | 221 | ||
- | 222 | /* Send cmd10 (SEND_CID) */; |
|
115 | SerialPutString("reset..."); |
223 | cmd[0] = 0x40|CmdNo; // set command index |
- | 224 | cmd[1] = (arg & 0xFF000000)>>24; |
|
116 | while(SDC_PutCommand (CMD) !=1) // Sending CMD0 (Reset) to the sdcard. |
225 | cmd[2] = (arg & 0x00FF0000)>>16; |
117 | { |
226 | cmd[3] = (arg & 0x0000FF00)>>8; |
118 | if (Timeout++ > 200) |
227 | cmd[4] = (arg & 0x000000FF); |
119 | { |
- | |
120 | - | ||
121 | return(1); |
- | |
122 | } |
228 | cmd[5] = CRC7(cmd, 5); // update checksum |
- | 229 | for (a = 0;a < 6; a++) // send the command sequence to the sdcard (6 bytes) |
|
123 | } |
230 | { |
124 | SerialPutString("ok."); |
- | |
125 | Timeout = 0; |
- | |
126 | CMD[0] = 0x41; |
- | |
127 | CMD[5] = 0xFF; |
- | |
128 | while( SDC_PutCommand (CMD) !=0) // Sending CMD1 to the sdcard. |
- | |
129 | { |
231 | SSC_PutChar(cmd[a]); |
130 | if (Timeout++ > 100) |
232 | } |
131 | { |
233 | SSC_ClearRxFifo(); // clear the rx fifo to discard the bytes received during the transmission of the 6 command bytes |
Line -... | Line 234... | ||
- | 234 | do |
|
- | 235 | { |
|
- | 236 | r1 = SSC_GetChar(); // get byte from sd-card |
|
- | 237 | if (Timeout++ > 500) return(r1); |
|
- | 238 | }while(r1 == 0xFF); // wait for the response byte from sd-card. |
|
- | 239 | return(r1); |
|
- | 240 | } |
|
- | 241 | ||
- | 242 | ||
- | 243 | //________________________________________________________________________________________________________________________________________ |
|
- | 244 | // Function: SDC_SendACMDR1(u8 CmdNo, u32 arg); |
|
- | 245 | // |
|
- | 246 | // Description: This function send a application command frame to the SD-Card in spi-mode. |
|
- | 247 | // |
|
- | 248 | // |
|
- | 249 | // Returnvalue: The function returns the first response byte like for R1 commands |
|
Line 132... | Line 250... | ||
132 | return(2); |
250 | //________________________________________________________________________________________________________________________________________ |
133 | } |
251 | u8 SDC_SendACMDR1(u8 CmdNo, u32 arg) |
134 | } |
252 | { |
135 | 253 | u8 r1 = 0xFF; |
|
136 | SSC_Disable(); // disable sdcard. |
254 | r1 = SDC_SendCMDR1(CMD_APP_CMD, 0UL); |
137 | return(0); |
255 | if(r1 & R1_BAD_RESPONSE) return(r1); |
138 | } |
256 | r1 = SDC_SendCMDR1(CmdNo, arg); |
139 | 257 | return(r1); |
|
Line 140... | Line 258... | ||
140 | 258 | } |
|
141 | 259 | ||
142 | 260 | ||
143 | //________________________________________________________________________________________________________________________________________ |
261 | //________________________________________________________________________________________________________________________________________ |
144 | // Funtion: SDC_PutCommand(* CMD); |
262 | // Function: SDC_GetData(u8 * cmd ,u8 *Buffer, u32 len); |
145 | // |
- | |
146 | // Description: This function initialises the SDCard to spi-mode. |
263 | // |
147 | // |
- | |
148 | // |
- | |
149 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
264 | // Description: This function sneds cmd an reads a datablock of len from the sd-card |
150 | //________________________________________________________________________________________________________________________________________ |
265 | // |
151 | - | ||
152 | u8 SDC_PutCommand (u8 *CMD) |
266 | // |
- | 267 | // Returnvalue: SD_Result_t |
|
153 | { |
268 | //________________________________________________________________________________________________________________________________________ |
154 | u8 tmp = 0xff; |
- | |
155 | u16 Timeout = 0; |
269 | |
- | 270 | SD_Result_t SDC_GetData(u8 CmdNo, u32 addr, u8 *Buffer, u32 len) |
|
156 | u16 a; |
271 | { |
157 | SSC_ClearRxFifo(); |
- | |
158 | SSC_Disable(); // disable chipselect |
272 | u8 rsp; |
159 | SSC_PutChar(0xFF); // Send 8 Clocks to the sdcard while card is not selected. |
- | |
- | 273 | u16 timeout; |
|
160 | SSC_Enable(); // enable chipselect. |
274 | u16 a, Crc16; |
161 | 275 | SD_Result_t result = SD_ERROR_UNKNOWN; |
|
162 | // if (*CMD == 0x41) Delay_ms(10); // if command is CMD0 generate a short delay. |
276 | |
163 | 277 | // send the command |
|
164 | for (a = 0;a<0x06;a++) // send the command sequence to the sdcard (6 bytes) |
278 | rsp = SDC_SendCMDR1(CmdNo, addr); |
- | 279 | if (rsp != R1_NO_ERR) |
|
165 | { |
280 | { |
- | 281 | result = SD_ERROR_BAD_RESPONSE; |
|
- | 282 | goto end; |
|
- | 283 | } |
|
- | 284 | SSC_ClearRxFifo(); |
|
- | 285 | do |
|
- | 286 | { |
|
166 | 287 | rsp = SSC_GetChar(); |
|
- | 288 | if((rsp & 0xF0) == 0x00) // data error token |
|
- | 289 | { |
|
- | 290 | result = SD_ERROR_READ_DATA; |
|
- | 291 | goto end; |
|
- | 292 | } |
|
167 | SSC_PutChar(*CMD++); |
293 | // if(timeout++>500) break; |
- | 294 | }while(rsp != DATA_START_TOKEN); |
|
- | 295 | // data start token received |
|
- | 296 | for (a = 0; a < len; a++) // read the block from the SSC |
|
- | 297 | { |
|
- | 298 | Buffer[a] = SSC_GetChar(); |
|
- | 299 | } |
|
- | 300 | // Read two bytes CRC16-Data checksum |
|
168 | } |
301 | Crc16 = SSC_GetChar(); // highbyte fisrt |
169 | 302 | Crc16 = (Crc16<<8)|SSC_GetChar(); // lowbyte last |
|
Line -... | Line 303... | ||
- | 303 | // if(Crc16 != CRC16(Buffer, len)) result = SD_ERROR_CRC_DATA; |
|
- | 304 | /* else */result = SD_SUCCESS; |
|
- | 305 | ||
- | 306 | end: |
|
- | 307 | //SSC_Disable(); // disable sdcard. |
|
- | 308 | if(result != SD_SUCCESS) |
|
- | 309 | { |
|
- | 310 | sprintf(text,"Error %02X reading data from sd card (R1=%02X).\r\n", result, rsp); |
|
Line -... | Line 311... | ||
- | 311 | SerialPutString(text); |
|
- | 312 | } |
|
- | 313 | return(result); |
|
- | 314 | } |
|
- | 315 | ||
- | 316 | ||
- | 317 | //________________________________________________________________________________________________________________________________________ |
|
- | 318 | // Function: SDC_PrintCID(u8 * pCID); |
|
- | 319 | // |
|
- | 320 | // Description: This function prints the CIS register in a human readable format. |
|
- | 321 | // |
|
- | 322 | // |
|
- | 323 | // Returnvalue: the function returns nothing |
|
- | 324 | //________________________________________________________________________________________________________________________________________ |
|
- | 325 | ||
- | 326 | void SDC_PrintCID(u8 * pCID) |
|
- | 327 | { |
|
- | 328 | u8 text[50]; |
|
- | 329 | u8 pn[6]; |
|
- | 330 | u16 temp1, temp2; |
|
- | 331 | ||
- | 332 | sprintf(text, "\r\nManufacturer ID: %i\r\n", pCID[0]); |
|
- | 333 | SerialPutString(text); |
|
- | 334 | memcpy(pn, &pCID[1], 2); |
|
- | 335 | pn[2] = '\0'; // terminate string |
|
- | 336 | sprintf(text, "Application ID: %s\r\n",pn); |
|
- | 337 | SerialPutString(text); |
|
- | 338 | memcpy(pn, &pCID[3], 5); |
|
- | 339 | pn[5] = '\0'; // terminate string |
|
- | 340 | sprintf(text, "Product Name: %s\r\n",pn); |
|
Line 170... | Line 341... | ||
170 | SSC_ClearRxFifo(); |
341 | SerialPutString(text); |
171 | while (tmp == 0xff) // Wait for response from sdcard. |
342 | sprintf(text, "Product Rev.: %i.%i\r\n",pCID[8]>>4, pCID[8]&0xF); |
172 | { |
343 | SerialPutString(text); |
173 | tmp = SSC_GetChar(); |
344 | SerialPutString("Serial No.: "); |
174 | if (Timeout++ > 200) |
345 | for(temp1 = 0; temp1<4; temp1++) |
175 | { |
346 | { |
176 | break; // or timeout. |
347 | sprintf(text,"%02X", pCID[9+temp1]); |
177 | } |
348 | SerialPutString(text); |
Line 178... | Line 349... | ||
178 | } |
349 | } |
179 | 350 | SerialPutString("\r\n"); |
|
180 | return(tmp); |
- | |
181 | } |
351 | temp1 = pCID[14] & 0x0F; // month |
182 | - | ||
183 | - | ||
184 | 352 | temp2 = ((pCID[14]>>4)|(pCID[13]<<4)) + 2000; // year |
|
185 | - | ||
186 | //________________________________________________________________________________________________________________________________________ |
- | |
187 | // Funtion: SDC_PutSector(void); |
- | |
Line -... | Line 353... | ||
- | 353 | sprintf(text, "Manufac. Date: %i/%i\r\n\r\n",temp1, temp2); |
|
- | 354 | SerialPutString(text); |
|
- | 355 | } |
|
188 | // |
356 | |
- | 357 | //________________________________________________________________________________________________________________________________________ |
|
- | 358 | // Funtion: SDC_GetCID(u8 * pCID); |
|
- | 359 | // |
|
- | 360 | // Description: This function reads the CIS register form the sd card in spi mode. |
|
- | 361 | // |
|
189 | // Description: This function writes one sector of data to the SSC |
362 | // |
190 | // |
363 | // Returnvalue: the function returns error state |
191 | // |
364 | //________________________________________________________________________________________________________________________________________ |
192 | // Returnvalue: none |
365 | |
- | 366 | SD_Result_t SDC_GetCID(u8 * pCID) |
|
- | 367 | { |
|
- | 368 | return SDC_GetData(CMD_SEND_CID, 0UL, pCID, 16); |
|
- | 369 | } |
|
- | 370 | ||
- | 371 | //________________________________________________________________________________________________________________________________________ |
|
- | 372 | // Funtion: SDC_GetCSD(u8 * pCSD); |
|
- | 373 | // |
|
- | 374 | // Description: This function reads the CSD register form the sd card in spi mode. |
|
- | 375 | // |
|
- | 376 | // |
|
- | 377 | // Returnvalue: the function returns error state |
|
- | 378 | //________________________________________________________________________________________________________________________________________ |
|
- | 379 | ||
193 | //________________________________________________________________________________________________________________________________________ |
380 | SD_Result_t SDC_GetCSD(u8 * pCSD) |
- | 381 | { |
|
- | 382 | return SDC_GetData(CMD_SEND_CSD, 0UL, pCSD, 16); |
|
- | 383 | } |
|
194 | 384 | ||
195 | u8 SDC_PutSector(u32 addr,u8 *Buffer) |
385 | |
- | 386 | //________________________________________________________________________________________________________________________________________ |
|
196 | { |
387 | // Funtion: SDC_Init(void); |
- | 388 | // |
|
197 | u8 tmp; |
389 | // Description: This function initialises the SDCard to spi-mode. |
- | 390 | // |
|
- | 391 | // |
|
- | 392 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
|
- | 393 | //________________________________________________________________________________________________________________________________________ |
|
- | 394 | ||
- | 395 | SD_Result_t SDC_Init(void) |
|
- | 396 | { |
|
Line 198... | Line 397... | ||
198 | u8 CMD[] = {0x58,0x00,0x00,0x00,0x00,0xFF}; |
397 | u32 Timeout = 0; |
- | 398 | u8 text[50]; |
|
- | 399 | u8 rsp[6]; // SD-SPI response buffer |
|
- | 400 | SD_Result_t result = SD_ERROR_UNKNOWN; |
|
Line -... | Line 401... | ||
- | 401 | ||
- | 402 | if(SD_SWITCH) // init only if the SD-Switch is indicating a card in the slot |
|
- | 403 | { |
|
- | 404 | SerialPutString("\r\n SSC init..."); |
|
- | 405 | SSC_Init(); |
|
- | 406 | SerialPutString("ok"); |
|
- | 407 | ||
- | 408 | SerialPutString("\r\n SDC init..."); |
|
- | 409 | SDCardInfo.Valid = 0; |
|
- | 410 | /* The host shall supply power to the card so that the voltage is reached to Vdd_min within 250ms and |
|
- | 411 | start to supply at least 74 SD clocks to the SD card with keeping cmd line to high. In case of SPI |
|
- | 412 | mode, CS shall be held to high during 74 clock cycles. */ |
|
- | 413 | SSC_Disable(); // set SD_CS high |
|
- | 414 | SSC_ClearRxFifo(); // clear the rx fifo |
|
- | 415 | ||
- | 416 | for (Timeout = 0; Timeout < 15; Timeout++) // 15*8 = 120 cycles |
|
- | 417 | { |
|
- | 418 | SSC_PutChar(0xFF); |
|
- | 419 | } |
|
- | 420 | ||
- | 421 | // switch to idle state |
|
199 | u16 a; |
422 | while(SDC_SendCMDR1(CMD_GO_IDLE_STATE, 0UL) != R1_IDLE_STATE) |
- | 423 | { |
|
200 | addr = addr << 9; // convert sectoradress to byteadress |
424 | if (Timeout++ > 20) |
- | 425 | { |
|
201 | 426 | SerialPutString("reset timeout"); |
|
- | 427 | result = SD_ERROR_RESET; |
|
- | 428 | goto end; |
|
- | 429 | } |
|
- | 430 | } |
|
- | 431 | // enable crc feature |
|
- | 432 | /* if(SDC_SendCMDR1(CMD_CRC_ON_OFF, 1UL) != R1_IDLE_STATE) |
|
- | 433 | { |
|
- | 434 | sprintf(text,"Bad cmd59 R1=%02X.\r\n", rsp[0]); |
|
- | 435 | SerialPutString(text); |
|
- | 436 | result = SD_ERROR_BAD_RESPONSE; |
|
- | 437 | goto end; |
|
- | 438 | }*/ |
|
- | 439 | // check for card hw version |
|
- | 440 | // 2.7-3.6V Range = 0x01, check pattern 0xAA |
|
- | 441 | rsp[0] = SDC_SendCMDR1(CMD_SEND_IF_COND, 0x000001AA); |
|
- | 442 | // answer to cmd58 is an R7 response (R1+ 4Byte IFCond) |
|
- | 443 | if(rsp[0] & R1_BAD_RESPONSE) |
|
- | 444 | { |
|
- | 445 | sprintf(text,"Bad cmd8 R1=%02X.\r\n", rsp[0]); |
|
- | 446 | SerialPutString(text); |
|
- | 447 | result = SD_ERROR_BAD_RESPONSE; |
|
- | 448 | goto end; |
|
- | 449 | } |
|
- | 450 | if(rsp[0] & R1_ILLEGAL_CMD) |
|
- | 451 | { |
|
- | 452 | //Ver1.X SD Memory Card or not a SD Memory Card |
|
- | 453 | SDCardInfo.Version = VER_1X; |
|
- | 454 | } |
|
- | 455 | else |
|
- | 456 | { |
|
- | 457 | // Ver2.00 or later SD Memory Card |
|
202 | CMD[1] = ((addr & 0xFF000000) >>24 ); |
458 | // reading the remaining bytes of the R7 response |
Line -... | Line 459... | ||
- | 459 | SDCardInfo.Version = VER_20; |
|
- | 460 | for(Timeout = 1; Timeout < 5; Timeout++) |
|
- | 461 | { |
|
- | 462 | rsp[Timeout] = SSC_GetChar(); |
|
- | 463 | } |
|
- | 464 | //check pattern |
|
- | 465 | if(rsp[4]!= 0xAA) |
|
- | 466 | { |
|
- | 467 | SerialPutString("Bad cmd8 R7 check pattern.\r\n"); |
|
- | 468 | result = SD_ERROR_BAD_RESPONSE; |
|
- | 469 | goto end; |
|
- | 470 | } |
|
- | 471 | if ( (rsp[3] & 0x0F)!= 0x01 ) // voltage range is not 2.7-3.6V |
|
- | 472 | { |
|
- | 473 | ||
- | 474 | SerialPutString("Card is incompatible to 3.3V.\r\n"); |
|
- | 475 | result = SD_ERROR_BAD_VOLTAGE_RANGE; |
|
- | 476 | goto end; |
|
- | 477 | } |
|
- | 478 | } |
|
- | 479 | ||
- | 480 | rsp[0] = SDC_SendCMDR1(CMD_READ_OCR, 0UL); |
|
- | 481 | // answer to cmd58 is an R3 response (R1 + 4Byte OCR) |
|
- | 482 | if(rsp[0] & R1_BAD_RESPONSE) |
|
- | 483 | { |
|
- | 484 | sprintf(text,"Bad cmd58 R1 %02x.\r\n", rsp[0]); |
|
- | 485 | SerialPutString(text); |
|
- | 486 | result = SD_ERROR_BAD_RESPONSE; |
|
- | 487 | goto end; |
|
- | 488 | } |
|
203 | CMD[2] = ((addr & 0x00FF0000) >>16 ); |
489 | if(rsp[0] & R1_ILLEGAL_CMD) |
- | 490 | { |
|
- | 491 | SerialPutString("Not an SD-CARD.\r\n"); |
|
- | 492 | result = SD_ERROR_NO_SDCARD; |
|
- | 493 | goto end; |
|
- | 494 | } |
|
- | 495 | // read 4 bytes of OCR register |
|
204 | CMD[3] = ((addr & 0x0000FF00) >>8 ); |
496 | for(Timeout = 1; Timeout < 5; Timeout++) |
- | 497 | { |
|
- | 498 | rsp[Timeout] = SSC_GetChar(); |
|
- | 499 | } |
|
205 | 500 | // NavicCtrl uses 3.3 V, therefore check for bit 20 & 21 |
|
- | 501 | if((rsp[2] & 0x30) != 0x30) |
|
- | 502 | { |
|
- | 503 | // supply voltage is not supported by sd-card |
|
- | 504 | SerialPutString("Card is incompatible to 3.3V.\r\n"); |
|
- | 505 | result = SD_ERROR_BAD_VOLTAGE_RANGE; |
|
206 | tmp = SDC_PutCommand (CMD); // send command to sdcard. |
506 | goto end; |
- | 507 | } |
|
- | 508 | ||
- | 509 | // Initialize the sd-card sending continously ACMD_SEND_OP_COND (only supported by SD cards) |
|
- | 510 | Timeout = SetDelay(2000); // set timeout to 2000 ms (large cards tend to longer) |
|
- | 511 | do |
|
- | 512 | { |
|
- | 513 | rsp[0] = SDC_SendACMDR1(ACMD_SEND_OP_COND, 0UL); |
|
- | 514 | if(rsp[0] & R1_BAD_RESPONSE) |
|
- | 515 | { |
|
- | 516 | sprintf(text,"Bad Acmd41 R1=%02X.\r\n", rsp[0]); |
|
- | 517 | SerialPutString(text); |
|
- | 518 | result = SD_ERROR_BAD_RESPONSE; |
|
- | 519 | goto end; |
|
- | 520 | } |
|
- | 521 | if(CheckDelay(Timeout)) |
|
- | 522 | { |
|
- | 523 | SerialPutString("Init timeout.\r\n"); |
|
- | 524 | result = SD_ERROR_INITIALIZE; |
|
- | 525 | goto end; |
|
- | 526 | } |
|
- | 527 | } while(rsp[0] & R1_IDLE_STATE); // loop until idle state |
|
- | 528 | ||
- | 529 | if(rsp[0] != R1_NO_ERR) |
|
- | 530 | { |
|
- | 531 | SerialPutString("Init error.\r\n"); |
|
- | 532 | result = SD_ERROR_INITIALIZE; |
|
- | 533 | goto end; |
|
- | 534 | } |
|
- | 535 | /* set block size to 512 bytes */ |
|
- | 536 | if(SDC_SendCMDR1(CMD_SET_BLOCKLEN, 512UL) != R1_NO_ERR) |
|
- | 537 | { |
|
- | 538 | SerialPutString("Error setting block length to 512.\r\n"); |
|
- | 539 | result = SD_ERROR_SET_BLOCKLEN; |
|
- | 540 | goto end; |
|
- | 541 | } |
|
- | 542 | ||
- | 543 | ||
- | 544 | //SSC_Disable(); // set SD_CS high |
|
- | 545 | // here is the right place to inrease the SPI boud rate to maximum |
|
- | 546 | //SSC_Enable(); // set SD_CS high |
|
- | 547 | ||
- | 548 | // read CID register |
|
- | 549 | result = SDC_GetCID((u8 *)&SDCardInfo.CID); |
|
- | 550 | if(result != SD_SUCCESS) |
|
- | 551 | { |
|
- | 552 | SerialPutString("Error reading CID.\r\n"); |
|
- | 553 | goto end; |
|
- | 554 | } |
|
- | 555 | ||
- | 556 | // read CSD register |
|
- | 557 | result = SDC_GetCSD((u8 *)&SDCardInfo.CSD); |
|
- | 558 | if(result != SD_SUCCESS) |
|
- | 559 | { |
|
- | 560 | SerialPutString("Error reading CSD.\r\n"); |
|
- | 561 | goto end; |
|
- | 562 | } |
|
- | 563 | ||
- | 564 | SerialPutString("ok\r\n"); |
|
- | 565 | ||
- | 566 | u8 c_size_mult, read_bl_len; |
|
- | 567 | u32 c_size; |
|
- | 568 | ||
- | 569 | switch(SDCardInfo.CSD[0]>>6) // check CSD Version |
|
- | 570 | { |
|
- | 571 | case 0x00: // if CSD is V1.0 structure (2GB limit) |
|
- | 572 | ||
- | 573 | /* |
|
- | 574 | memory capacity = BLOCKNR * BLOCK_LEN |
|
- | 575 | BLOCKNR = (C_SIZE+1) * MULT |
|
- | 576 | MULT = 2^(C_SIZE_MULT+2) |
|
- | 577 | BLOCK_LEN = 2^READ_BL_LEN |
|
- | 578 | |
|
- | 579 | C_SIZE is 12 bits [73:62] in CSD register |
|
- | 580 | C_SIZE_MULT is 3 bits [49:47] in CSD register |
|
- | 581 | READ_BL_LEN is 4 bits [83:80] in CSD register |
|
- | 582 | */ |
|
- | 583 | ||
- | 584 | read_bl_len = (SDCardInfo.CSD[5] & 0x0F); //CSD[05] -> [87:80] |
|
- | 585 | c_size = ((u32)(SDCardInfo.CSD[6] & 0x03))<<10; //CSD[06] -> [79:72] |
|
- | 586 | c_size |= ((u32)SDCardInfo.CSD[7])<<2; //CSD[07] -> [71:64] |
|
- | 587 | c_size |= (u32)(SDCardInfo.CSD[8]>>6); //CSD[08] -> [63:56] |
|
- | 588 | c_size_mult = (SDCardInfo.CSD[9] & 0x03)<<1; //CSD[09] -> [55:48] |
|
Line -... | Line 589... | ||
- | 589 | c_size_mult |=(SDCardInfo.CSD[10] & 0x80)>>7; //CSD[10] -> [47:40] |
|
- | 590 | SDCardInfo.Capacity = (u32)(c_size+1)*(1L<<(c_size_mult+2))*(1L<<read_bl_len); |
|
- | 591 | break; |
|
- | 592 | ||
- | 593 | case 0x01: // if CSD is V2.0 structure (HC SD-Card > 2GB) |
|
- | 594 | ||
207 | if (tmp != 0) |
595 | /* |
- | 596 | memory capacity = (C_SIZE+1) * 512K byte |
|
- | 597 | C_SIZE is 22 bits [69:48] in CSR register |
|
- | 598 | */ |
|
- | 599 | ||
- | 600 | c_size = ((u32)(SDCardInfo.CSD[7] & 0x3F))<<16; //CSD[07] -> [71:64] |
|
- | 601 | c_size |= ((u32)SDCardInfo.CSD[8])<<8; //CSD[08] -> [63:56] |
|
- | 602 | c_size |= (u32)SDCardInfo.CSD[9]; //CSD[09] -> [55:48]; |
|
- | 603 | SDCardInfo.Capacity = (c_size + 1)* 512L * 1024L; |
|
- | 604 | break; |
|
- | 605 | ||
- | 606 | default: //unknown CSD Version |
|
- | 607 | SDCardInfo.Capacity = 0; |
|
- | 608 | break; |
|
- | 609 | } |
|
- | 610 | ||
- | 611 | switch(SDCardInfo.Version) |
|
- | 612 | { |
|
- | 613 | case VER_1X: |
|
- | 614 | SerialPutString(" SD-CARD V1.x"); |
|
- | 615 | break; |
|
- | 616 | case VER_20: |
|
- | 617 | SerialPutString(" SD-CARD V2.0 or later"); |
|
Line 208... | Line 618... | ||
208 | { |
618 | default: |
209 | return(tmp); |
619 | break; |
Line 210... | Line -... | ||
210 | } |
- | |
211 | SSC_ClearRxFifo(); |
620 | } |
212 | for (a=0;a<100;a++) // wait until sdcard is ready |
621 | u16 mb_size = (u16)(SDCardInfo.Capacity/(1024L*1024L)); |
213 | { |
622 | sprintf(text, "\r\n Capacity = %i MB", mb_size); |
214 | SSC_GetChar(); |
623 | SerialPutString(text); |
215 | } |
624 | |
216 | 625 | // SDC_PrintCID((u8 *)&SDCardInfo.CID); |
|
217 | SSC_PutChar(0xFE); // send start of header to the SSC |
626 | SDCardInfo.Valid = 1; |
218 | 627 | ||
Line 219... | Line 628... | ||
219 | for (a=0;a<512;a++) // transmitt one sector (normaly 512bytes) of data to the sdcard. |
628 | // jump point for error condition before |
220 | { |
629 | end: |
221 | SSC_PutChar(*Buffer++); |
- | |
222 | } |
- | |
223 | - | ||
224 | SSC_PutChar(0xFF); // write two bytes of crc to the sdcard (not used in spi-mode) |
- | |
225 | SSC_PutChar(0xFF); |
- | |
226 | SSC_ClearRxFifo(); |
630 | SSC_Disable(); |
227 | while (SSC_GetChar() != 0xff){}; // wait untile the sdcard is ready. |
631 | } |
228 | - | ||
229 | SSC_Disable(); // disable sdcard. |
- | |
Line -... | Line 632... | ||
- | 632 | else |
|
- | 633 | { |
|
230 | 634 | //SerialPutString("\r\nNo Card in Slot."); |
|
Line -... | Line 635... | ||
- | 635 | SSC_Deinit(); |
|
231 | return(0); |
636 | SDCardInfo.Valid = 0; |
232 | } |
637 | result = SD_ERROR_NOCARD; |
Line 233... | Line -... | ||
233 | - | ||
234 | 638 | } |
|
235 | 639 | if(result != SD_SUCCESS) SerialPutString("nok"); |
|
236 | //________________________________________________________________________________________________________________________________________ |
640 | |
237 | // Funtion: SDC_GetSector(u32 addr,u8 *Buffer); |
641 | return(result); |
238 | // |
642 | } |
239 | // Description: This function reads one sector of data from the SSC |
643 | |
240 | // |
644 | |
241 | // |
645 | //________________________________________________________________________________________________________________________________________ |
Line 242... | Line 646... | ||
242 | // Returnvalue: none |
646 | // Funtion: SDC_Deinit(void); |
243 | //________________________________________________________________________________________________________________________________________ |
647 | // |
- | 648 | // Description: This function deinitialises the SDCard interface. |
|
- | 649 | // |
|
- | 650 | // |
|
- | 651 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
|
- | 652 | //________________________________________________________________________________________________________________________________________ |
|
- | 653 | ||
244 | 654 | SD_Result_t SDC_Deinit(void) |
|
- | 655 | { |
|
- | 656 | SerialPutString("SDC deinit..."); |
|
245 | u8 SDC_GetSector(u32 addr,u8 *Buffer) |
657 | SSC_Deinit(); |
- | 658 | ||
246 | { |
659 | SDCardInfo.Valid = 0; |
247 | u8 CMD[] = {0x51,0x00,0x00,0x00,0x00,0xFF}; |
660 | SDCardInfo.Capacity = 0; |
248 | 661 | SDCardInfo.Version = VER_UNKNOWN; |
|
249 | addr = addr << 9; // convert sectoradress to byteadress. |
- | |
250 | - | ||
251 | CMD[1] = ((addr & 0xFF000000) >>24 ); |
- | |
252 | CMD[2] = ((addr & 0x00FF0000) >>16 ); |
- | |
253 | CMD[3] = ((addr & 0x0000FF00) >>8 ); |
662 | |
254 | 663 | SerialPutString("ok\r\n"); |
|
255 | // sprintf(text,"\n\rGetSector: (%lu)", (u32)addr ); SerialPutString(text); |
664 | return(SD_SUCCESS); |
256 | 665 | } |
|
- | 666 | ||
- | 667 | ||
Line 257... | Line 668... | ||
257 | SDC_GetBlock(CMD,Buffer,512); // read specified sector from sdcard. |
668 | //________________________________________________________________________________________________________________________________________ |
- | 669 | // Funtion: SDC_PutSector(void); |
|
- | 670 | // |
|
- | 671 | // Description: This function writes one sector of data to the SSC |
|
- | 672 | // |
|
- | 673 | // |
|
- | 674 | // Returnvalue: SD_Result_t |
|
- | 675 | //________________________________________________________________________________________________________________________________________ |
|
- | 676 | ||
- | 677 | SD_Result_t SDC_PutSector(u32 addr, const u8 *Buffer) |
|
- | 678 | { |
|
- | 679 | u8 rsp; |
|
- | 680 | u16 timeout = 0; |
|
- | 681 | u16 a, Crc16; |
|
- | 682 | //u32 Timeout = 0; |
|
- | 683 | SD_Result_t result = SD_ERROR_UNKNOWN; |
|
- | 684 | ||
- | 685 | addr = addr << 9; // convert sectoradress to byteadress |
|
- | 686 | rsp = SDC_SendCMDR1(CMD_WRITE_SINGLE_BLOCK, addr); |
|
- | 687 | if (rsp != R1_NO_ERR) |
|
- | 688 | { |
|
- | 689 | result = SD_ERROR_BAD_RESPONSE; |
|
- | 690 | goto end; |
|
- | 691 | } |
|
- | 692 | SSC_ClearRxFifo(); |
|
- | 693 | for (a=0;a<20;a++) // at least one byte |
|
- | 694 | { |
|
- | 695 | SSC_GetChar(); |
|
- | 696 | } |
|
- | 697 | Crc16 = CRC16(Buffer, 512); // calc checksum for data block |
|
- | 698 | SSC_PutChar(DATA_START_TOKEN); // send data start of header to the SSC |
|
- | 699 | ||
- | 700 | for (a=0;a<512;a++) // transmit one sector (normaly 512bytes) of data to the sdcard. |
|
- | 701 | { |
|
- | 702 | SSC_PutChar(Buffer[a]); |
|
- | 703 | } |
|
- | 704 | // write two bytes of crc16 to the sdcard |
|
- | 705 | SSC_PutChar((u8)(Crc16>>8)); // write high byte first |
|
- | 706 | SSC_PutChar((u8)(0x00FF&Crc16)); // lowbyte last |
|
- | 707 | SSC_ClearRxFifo(); |
|
- | 708 | do // wait for data response token |
|
- | 709 | { |
|
- | 710 | rsp = SSC_GetChar(); |
|
- | 711 | if(timeout++>500) break; |
|
- | 712 | }while((rsp & 0x11) != 0x01 ); |
|
- | 713 | // analyse data response token |
|
- | 714 | switch(rsp & DATA_RESPONSE_MASK) |
|
- | 715 | { |
|
- | 716 | case DATA_RESPONSE_OK: |
|
- | 717 | result = SD_SUCCESS; |
|
- | 718 | break; |
|
- | 719 | case DATA_RESPONSE_CRC_ERR: |
|
- | 720 | result = SD_ERROR_CRC_DATA; |
|
258 | 721 | goto end; |
|
- | 722 | break; |
|
- | 723 | case DATA_RESPONSE_WRITE_ERR: |
|
- | 724 | result = SD_ERROR_WRITE_DATA; |
|
259 | return(0); |
725 | goto end; |
- | 726 | break; |
|
- | 727 | default: |
|
- | 728 | result = SD_ERROR_UNKNOWN; |
|
- | 729 | goto end; |
|
- | 730 | break; |
|
- | 731 | ||
- | 732 | } |
|
- | 733 | // wait until the sdcard is busy. |
|
- | 734 | rsp = SDC_WaitForBusy(); |
|
- | 735 | if(rsp != 0xFF) |
|
- | 736 | { |
|
- | 737 | result = SD_ERROR_TIMEOUT; |
|
- | 738 | goto end; |
|
- | 739 | } |
|
- | 740 | // check card status |
|
- | 741 | rsp = SDC_SendCMDR1(CMD_SEND_STATUS, 0); |
|
- | 742 | if(rsp != R1_NO_ERR) |
|
- | 743 | { |
|
- | 744 | result = SD_ERROR_BAD_RESPONSE; |
|
- | 745 | SSC_GetChar(); |
|
- | 746 | goto end; |
|
- | 747 | } |
|
260 | } |
748 | // 2nd byte of r2 response |