Rev 294 | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 294 | Rev 297 | ||
---|---|---|---|
1 | #include <avr/io.h> |
1 | #include <avr/io.h> |
2 | #include <util/delay.h> |
2 | #include <util/delay.h> |
3 | #include <string.h> |
3 | #include <string.h> |
4 | #include "sdc.h" |
4 | #include "sdc.h" |
5 | #include "ssc.h" |
5 | #include "ssc.h" |
6 | #include "timer0.h" |
6 | #include "timer0.h" |
7 | #include "printf_P.h" |
7 | #include "printf_P.h" |
8 | #include "crc16.h" |
8 | #include "crc16.h" |
9 | 9 | ||
10 | #define _SD_DEBUG |
10 | //#define _SD_DEBUG |
11 | 11 | ||
12 | #define CMD_GO_IDLE_STATE 0x00 /* CMD00: response R1 */ |
12 | #define CMD_GO_IDLE_STATE 0x00 /* CMD00: response R1 */ |
13 | #define CMD_SEND_OP_COND 0x01 /* CMD01: response R1 */ |
13 | #define CMD_SEND_OP_COND 0x01 /* CMD01: response R1 */ |
14 | #define CMD_SEND_IF_COND 0x08 /* CMD08: response R7 */ |
14 | #define CMD_SEND_IF_COND 0x08 /* CMD08: response R7 */ |
15 | #define CMD_SEND_CSD 0x09 /* CMD09: response R1 */ |
15 | #define CMD_SEND_CSD 0x09 /* CMD09: response R1 */ |
16 | #define CMD_SEND_CID 0x0A /* CMD10: response R1 */ |
16 | #define CMD_SEND_CID 0x0A /* CMD10: response R1 */ |
17 | #define CMD_SEND_STATUS 0x0D /* CMD13: response R2 */ |
17 | #define CMD_SEND_STATUS 0x0D /* CMD13: response R2 */ |
18 | #define CMD_SET_BLOCKLEN 0x10 /* CMD16: arg0[31:0]: block length, response R1*/ |
18 | #define CMD_SET_BLOCKLEN 0x10 /* CMD16: arg0[31:0]: block length, response R1*/ |
19 | #define CMD_READ_SINGLE_BLOCK 0x11 /* CMD17: arg0[31:0]: data address, response R1 */ |
19 | #define CMD_READ_SINGLE_BLOCK 0x11 /* CMD17: arg0[31:0]: data address, response R1 */ |
20 | #define CMD_WRITE_SINGLE_BLOCK 0x18 /* CMD24: arg0[31:0]: data address, response R1 */ |
20 | #define CMD_WRITE_SINGLE_BLOCK 0x18 /* CMD24: arg0[31:0]: data address, response R1 */ |
21 | #define CMD_APP_CMD 0x37 /* CMD55: response R1 */ |
21 | #define CMD_APP_CMD 0x37 /* CMD55: response R1 */ |
22 | #define CMD_READ_OCR 0x3A /* CMD58: response R3 */ |
22 | #define CMD_READ_OCR 0x3A /* CMD58: response R3 */ |
23 | #define CMD_CRC_ON_OFF 0x3B /* CMD59: arg0[31:1]: stuff bits, arg0[0:0]: crc option, response R1 */ |
23 | #define CMD_CRC_ON_OFF 0x3B /* CMD59: arg0[31:1]: stuff bits, arg0[0:0]: crc option, response R1 */ |
24 | #define ACMD_SEND_OP_COND 0x29 /* ACMD41: arg0[31]: stuff bits, arg0[30]: HCS, arg0[29:0] stuff bits*, response R1 */ |
24 | #define ACMD_SEND_OP_COND 0x29 /* ACMD41: arg0[31]: stuff bits, arg0[30]: HCS, arg0[29:0] stuff bits*, response R1 */ |
25 | 25 | ||
26 | #define R1_NO_ERR 0x00 |
26 | #define R1_NO_ERR 0x00 |
27 | #define R1_IDLE_STATE 0x01 |
27 | #define R1_IDLE_STATE 0x01 |
28 | #define R1_ERASE_RESET 0x02 |
28 | #define R1_ERASE_RESET 0x02 |
29 | #define R1_ILLEGAL_CMD 0x04 |
29 | #define R1_ILLEGAL_CMD 0x04 |
30 | #define R1_COM_CRC_ERR 0x08 |
30 | #define R1_COM_CRC_ERR 0x08 |
31 | #define R1_ERASE_SEQUENCE_ERR 0x10 |
31 | #define R1_ERASE_SEQUENCE_ERR 0x10 |
32 | #define R1_ADDRESS_ERR 0x20 |
32 | #define R1_ADDRESS_ERR 0x20 |
33 | #define R1_PARAMETER_ERR 0x40 |
33 | #define R1_PARAMETER_ERR 0x40 |
34 | #define R1_BAD_RESPONSE 0x80 |
34 | #define R1_BAD_RESPONSE 0x80 |
35 | 35 | ||
36 | #define R2_NO_ERR 0x00 |
36 | #define R2_NO_ERR 0x00 |
37 | #define R2_CARD_LOCKED 0x01 |
37 | #define R2_CARD_LOCKED 0x01 |
38 | #define R2_ERASE_WRITE_PROT_ERR 0x02 |
38 | #define R2_ERASE_WRITE_PROT_ERR 0x02 |
39 | #define R2_UNKOWN_ERR 0x04 |
39 | #define R2_UNKOWN_ERR 0x04 |
40 | #define R2_CARD_CTRL_ERR 0x08 |
40 | #define R2_CARD_CTRL_ERR 0x08 |
41 | #define R2_CARD_ECC_ERR 0x10 |
41 | #define R2_CARD_ECC_ERR 0x10 |
42 | #define R2_WRITE_PROT_ERR 0x20 |
42 | #define R2_WRITE_PROT_ERR 0x20 |
43 | #define R2_ERASE_PARAM_ERR 0x40 |
43 | #define R2_ERASE_PARAM_ERR 0x40 |
44 | #define R2_OUT_OF_RANGE_ERR 0x80 |
44 | #define R2_OUT_OF_RANGE_ERR 0x80 |
45 | 45 | ||
46 | #define DATA_START_TOKEN 0xFE |
46 | #define DATA_START_TOKEN 0xFE |
47 | #define DATA_RESPONSE_MASK 0x1F |
47 | #define DATA_RESPONSE_MASK 0x1F |
48 | #define DATA_RESPONSE_OK 0x05 |
48 | #define DATA_RESPONSE_OK 0x05 |
49 | #define DATA_RESPONSE_CRC_ERR 0x0B |
49 | #define DATA_RESPONSE_CRC_ERR 0x0B |
50 | #define DATA_RESPONSE_WRITE_ERR 0x1D |
50 | #define DATA_RESPONSE_WRITE_ERR 0x1D |
51 | 51 | ||
52 | typedef enum |
52 | typedef enum |
53 | { |
53 | { |
54 | VER_UNKNOWN, |
54 | VER_UNKNOWN, |
55 | VER_1X, |
55 | VER_1X, |
56 | VER_20 |
56 | VER_20 |
57 | } SDVersion_t; |
57 | } SDVersion_t; |
58 | 58 | ||
59 | typedef struct |
59 | typedef struct |
60 | { |
60 | { |
61 | uint8_t Valid; |
61 | uint8_t Valid; |
62 | SDVersion_t Version; // HW-Version |
62 | SDVersion_t Version; // HW-Version |
63 | uint32_t Capacity; // Memory capacity in bytes |
63 | uint32_t Capacity; // Memory capacity in bytes |
64 | uint8_t CID[16]; // CID register |
64 | uint8_t CID[16]; // CID register |
65 | uint8_t CSD[16]; // CSD register |
65 | uint8_t CSD[16]; // CSD register |
66 | } __attribute__((packed)) SDCardInfo_t; |
66 | } __attribute__((packed)) SDCardInfo_t; |
67 | 67 | ||
68 | 68 | ||
69 | volatile SDCardInfo_t SDCardInfo; |
69 | volatile SDCardInfo_t SDCardInfo; |
70 | 70 | ||
71 | //________________________________________________________________________________________________________________________________________ |
71 | //________________________________________________________________________________________________________________________________________ |
72 | // Function: CRC7(uint8_t* cmd, uint32_t len); |
72 | // Function: CRC7(uint8_t* cmd, uint32_t len); |
73 | // |
73 | // |
74 | // Description: This function calculated the CRC7 checksum used in the last byte of a spi command frame. |
74 | // Description: This function calculated the CRC7 checksum used in the last byte of a spi command frame. |
75 | // |
75 | // |
76 | // |
76 | // |
77 | // Returnvalue: the function returns the crc7 including bit 0 set to 1 |
77 | // Returnvalue: the function returns the crc7 including bit 0 set to 1 |
78 | //________________________________________________________________________________________________________________________________________ |
78 | //________________________________________________________________________________________________________________________________________ |
79 | 79 | ||
80 | uint8_t CRC7(uint8_t *cmd, uint32_t len) |
80 | uint8_t CRC7(uint8_t *cmd, uint32_t len) |
81 | { |
81 | { |
82 | uint8_t i, a; |
82 | uint8_t i, a; |
83 | uint8_t crc, Data; |
83 | uint8_t crc, Data; |
84 | 84 | ||
85 | crc = 0; // init CRC buffer |
85 | crc = 0; // init CRC buffer |
86 | for (a = 0; a < len ;a++) // for every byte in the msg |
86 | for (a = 0; a < len ;a++) // for every byte in the msg |
87 | { |
87 | { |
88 | Data = cmd[a]; |
88 | Data = cmd[a]; |
89 | for (i=0;i<8;i++) // for every bit in the byte |
89 | for (i=0;i<8;i++) // for every bit in the byte |
90 | { |
90 | { |
91 | crc <<= 1; // shift crc |
91 | crc <<= 1; // shift crc |
92 | if ((Data & 0x80)^(crc & 0x80)) crc ^=0x09; //xor |
92 | if ((Data & 0x80)^(crc & 0x80)) crc ^=0x09; //xor |
93 | Data <<= 1; // shift data for next bit |
93 | Data <<= 1; // shift data for next bit |
94 | } |
94 | } |
95 | } |
95 | } |
96 | crc = (crc<<1)|1; // set terminating bit to 1 |
96 | crc = (crc<<1)|1; // set terminating bit to 1 |
97 | return(crc); |
97 | return(crc); |
98 | } |
98 | } |
99 | 99 | ||
100 | 100 | ||
101 | uint8_t SDC_WaitForBusy(uint16_t timeout) |
101 | uint8_t SDC_WaitForBusy(uint16_t timeout) |
102 | { |
102 | { |
103 | uint8_t rsp = 0; |
103 | uint8_t rsp = 0; |
104 | uint16_t timestamp = 0; |
104 | uint16_t timestamp = 0; |
105 | 105 | ||
106 | SSC_Enable(); // enable chipselect. |
106 | SSC_Enable(); // enable chipselect. |
107 | timestamp = SetDelay(timeout); |
107 | timestamp = SetDelay(timeout); |
108 | do |
108 | do |
109 | { |
109 | { |
110 | rsp = SSC_GetChar(); |
110 | rsp = SSC_GetChar(); |
111 | if(CheckDelay(timestamp)) break; |
111 | if(CheckDelay(timestamp)) break; |
112 | }while(rsp != 0xFF); // wait while card is busy (data out low) |
112 | }while(rsp != 0xFF); // wait while card is busy (data out low) |
113 | return(rsp); |
113 | return(rsp); |
114 | } |
114 | } |
115 | 115 | ||
116 | //________________________________________________________________________________________________________________________________________ |
116 | //________________________________________________________________________________________________________________________________________ |
117 | // Function: SDC_SendCMDR1(uint8_t CmdNo, uint32_t arg); |
117 | // Function: SDC_SendCMDR1(uint8_t CmdNo, uint32_t arg); |
118 | // |
118 | // |
119 | // Description: This function send a command frame to the SD-Card in spi-mode. |
119 | // Description: This function send a command frame to the SD-Card in spi-mode. |
120 | // |
120 | // |
121 | // |
121 | // |
122 | // Returnvalue: The function returns the first response byte like for R1 commands |
122 | // Returnvalue: The function returns the first response byte like for R1 commands |
123 | //________________________________________________________________________________________________________________________________________ |
123 | //________________________________________________________________________________________________________________________________________ |
124 | uint8_t SDC_SendCMDR1(uint8_t CmdNo, uint32_t arg) |
124 | uint8_t SDC_SendCMDR1(uint8_t CmdNo, uint32_t arg) |
125 | { |
125 | { |
126 | uint8_t r1; |
126 | uint8_t r1; |
127 | uint16_t timeout = 0; |
127 | uint16_t timeout = 0; |
128 | uint16_t a; |
128 | uint16_t a; |
129 | uint8_t cmd[6]; |
129 | uint8_t cmd[6]; |
130 | 130 | ||
131 | cmd[0] = 0x40|CmdNo; // set command index |
131 | cmd[0] = 0x40|CmdNo; // set command index |
132 | cmd[1] = (arg & 0xFF000000)>>24; |
132 | cmd[1] = (arg & 0xFF000000)>>24; |
133 | cmd[2] = (arg & 0x00FF0000)>>16; |
133 | cmd[2] = (arg & 0x00FF0000)>>16; |
134 | cmd[3] = (arg & 0x0000FF00)>>8; |
134 | cmd[3] = (arg & 0x0000FF00)>>8; |
135 | cmd[4] = (arg & 0x000000FF); |
135 | cmd[4] = (arg & 0x000000FF); |
136 | cmd[5] = CRC7(cmd, 5); // update checksum |
136 | cmd[5] = CRC7(cmd, 5); // update checksum |
137 | #ifdef _SD_DEBUG |
137 | #ifdef _SD_DEBUG |
138 | printf("\r\nCmd=%02X, arg=%04X%04X", CmdNo, (uint16_t)(arg>>16), (uint16_t)(0xFFFF & arg)); |
138 | printf("\r\nCmd=%02X, arg=%04X%04X", CmdNo, (uint16_t)(arg>>16), (uint16_t)(0xFFFF & arg)); |
139 | #endif |
139 | #endif |
140 | SSC_Disable(); // disable chipselect. |
140 | SSC_Disable(); // disable chipselect. |
141 | SSC_PutChar(0xFF); // dummy to sync |
141 | SSC_PutChar(0xFF); // dummy to sync |
142 | SSC_Enable(); // enable chipselect. |
142 | SSC_Enable(); // enable chipselect. |
143 | _delay_loop_2(200); |
- | |
- | 143 | ||
144 | //SDC_WaitForBusy(500); // wait 500ms until card is busy |
144 | SDC_WaitForBusy(500); // wait 500ms until card is busy |
145 | 145 | ||
146 | for (a = 0;a < 6; a++) // send the command sequence to the sdcard (6 bytes) |
146 | for (a = 0;a < 6; a++) // send the command sequence to the sdcard (6 bytes) |
147 | { |
147 | { |
148 | SSC_PutChar(cmd[a]); |
148 | SSC_PutChar(cmd[a]); |
149 | _delay_loop_2(10); |
149 | _delay_loop_2(10); |
150 | } |
150 | } |
151 | // get response byte |
151 | // get response byte |
152 | do |
152 | do |
153 | { |
153 | { |
154 | r1 = SSC_GetChar(); // get byte from sd-card |
154 | r1 = SSC_GetChar(); // get byte from sd-card |
155 | if (timeout++ > 1000) break; |
155 | if (timeout++ > 500) break; |
156 | }while(r1 == 0xFF); // wait for the response byte from sd-card. |
156 | }while(r1 == 0xFF); // wait for the response byte from sd-card. |
157 | #ifdef _SD_DEBUG |
157 | #ifdef _SD_DEBUG |
158 | printf("-->R1=%02X", r1); |
158 | printf("-->R1=%02X", r1); |
159 | #endif |
159 | #endif |
160 | return(r1); |
160 | return(r1); |
161 | } |
161 | } |
162 | 162 | ||
163 | //________________________________________________________________________________________________________________________________________ |
163 | //________________________________________________________________________________________________________________________________________ |
164 | // Function: SDC_SendACMDR1(uint8_t CmdNo, uint32_t arg); |
164 | // Function: SDC_SendACMDR1(uint8_t CmdNo, uint32_t arg); |
165 | // |
165 | // |
166 | // Description: This function send a application command frame to the SD-Card in spi-mode. |
166 | // Description: This function send a application command frame to the SD-Card in spi-mode. |
167 | // |
167 | // |
168 | // |
168 | // |
169 | // Returnvalue: The function returns the first response byte like for R1 commands |
169 | // Returnvalue: The function returns the first response byte like for R1 commands |
170 | //________________________________________________________________________________________________________________________________________ |
170 | //________________________________________________________________________________________________________________________________________ |
171 | uint8_t SDC_SendACMDR1(uint8_t CmdNo, uint32_t arg) |
171 | uint8_t SDC_SendACMDR1(uint8_t CmdNo, uint32_t arg) |
172 | { |
172 | { |
173 | uint8_t r1 = 0xFF; |
173 | uint8_t r1 = 0xFF; |
174 | r1 = SDC_SendCMDR1(CMD_APP_CMD, 0UL); |
174 | r1 = SDC_SendCMDR1(CMD_APP_CMD, 0UL); |
175 | if(r1 & R1_BAD_RESPONSE) return(r1); |
175 | if(r1 & R1_BAD_RESPONSE) return(r1); |
176 | r1 = SDC_SendCMDR1(CmdNo, arg); |
176 | r1 = SDC_SendCMDR1(CmdNo, arg); |
177 | return(r1); |
177 | return(r1); |
178 | } |
178 | } |
179 | 179 | ||
180 | //________________________________________________________________________________________________________________________________________ |
180 | //________________________________________________________________________________________________________________________________________ |
181 | // Function: SDC_GetData(uint8_t * cmd ,u8 *Buffer, u32 len); |
181 | // Function: SDC_GetData(uint8_t * cmd ,u8 *Buffer, u32 len); |
182 | // |
182 | // |
183 | // Description: This function sneds cmd an reads a datablock of len from the sd-card |
183 | // Description: This function sneds cmd an reads a datablock of len from the sd-card |
184 | // |
184 | // |
185 | // |
185 | // |
186 | // Returnvalue: SD_Result_t |
186 | // Returnvalue: SD_Result_t |
187 | //________________________________________________________________________________________________________________________________________ |
187 | //________________________________________________________________________________________________________________________________________ |
188 | 188 | ||
189 | SD_Result_t SDC_GetData(uint8_t CmdNo, uint32_t addr, uint8_t *Buffer, uint32_t len) |
189 | SD_Result_t SDC_GetData(uint8_t CmdNo, uint32_t addr, uint8_t *Buffer, uint32_t len) |
190 | { |
190 | { |
191 | uint8_t rsp; |
191 | uint8_t rsp; |
192 | uint16_t a, crc16; |
192 | uint16_t a, crc16; |
193 | SD_Result_t result = SD_ERROR_UNKNOWN; |
193 | SD_Result_t result = SD_ERROR_UNKNOWN; |
194 | 194 | ||
195 | // send the command |
195 | // send the command |
196 | rsp = SDC_SendCMDR1(CmdNo, addr); |
196 | rsp = SDC_SendCMDR1(CmdNo, addr); |
197 | if (rsp != R1_NO_ERR) |
197 | if (rsp != R1_NO_ERR) |
198 | { |
198 | { |
199 | result = SD_ERROR_BAD_RESPONSE; |
199 | result = SD_ERROR_BAD_RESPONSE; |
200 | goto end; |
200 | goto end; |
201 | } |
201 | } |
202 | 202 | ||
203 | do |
203 | do |
204 | { |
204 | { |
205 | rsp = SSC_GetChar(); |
205 | rsp = SSC_GetChar(); |
206 | if((rsp & 0xF0) == 0x00) // data error token |
206 | if((rsp & 0xF0) == 0x00) // data error token |
207 | { |
207 | { |
208 | result = SD_ERROR_READ_DATA; |
208 | result = SD_ERROR_READ_DATA; |
209 | goto end; |
209 | goto end; |
210 | } |
210 | } |
211 | }while(rsp != DATA_START_TOKEN); |
211 | }while(rsp != DATA_START_TOKEN); |
212 | // data start token received |
212 | // data start token received |
213 | for (a = 0; a < len; a++) // read the block from the SSC |
213 | for (a = 0; a < len; a++) // read the block from the SSC |
214 | { |
214 | { |
215 | Buffer[a] = SSC_GetChar(); |
215 | Buffer[a] = SSC_GetChar(); |
216 | } |
216 | } |
217 | // Read two bytes CRC16-Data checksum |
217 | // Read two bytes CRC16-Data checksum |
218 | crc16 = SSC_GetChar(); // highbyte first |
218 | crc16 = SSC_GetChar(); // highbyte first |
219 | crc16 = (crc16<<8)|SSC_GetChar(); // lowbyte last |
219 | crc16 = (crc16<<8)|SSC_GetChar(); // lowbyte last |
220 | /* if(crc16 != CRC16(Buffer, len)) result = SD_ERROR_CRC_DATA; |
220 | /* if(crc16 != CRC16(Buffer, len)) result = SD_ERROR_CRC_DATA; |
221 | else */result = SD_SUCCESS; |
221 | else */result = SD_SUCCESS; |
222 | 222 | ||
223 | end: |
223 | end: |
224 | if(result != SD_SUCCESS) |
224 | if(result != SD_SUCCESS) |
225 | { |
225 | { |
226 | printf("Error %02X reading data from sd card (R1=%02X).\r\n", result, rsp); |
226 | printf("Error %02X reading data from sd card (R1=%02X).\r\n", result, rsp); |
227 | } |
227 | } |
228 | return(result); |
228 | return(result); |
229 | } |
229 | } |
230 | 230 | ||
231 | 231 | ||
232 | //________________________________________________________________________________________________________________________________________ |
232 | //________________________________________________________________________________________________________________________________________ |
233 | // Function: SDC_PrintCID(u8 * pCID); |
233 | // Function: SDC_PrintCID(u8 * pCID); |
234 | // |
234 | // |
235 | // Description: This function prints the CIS register in a human readable format. |
235 | // Description: This function prints the CIS register in a human readable format. |
236 | // |
236 | // |
237 | // |
237 | // |
238 | // Returnvalue: the function returns nothing |
238 | // Returnvalue: the function returns nothing |
239 | //________________________________________________________________________________________________________________________________________ |
239 | //________________________________________________________________________________________________________________________________________ |
240 | 240 | ||
241 | void SDC_PrintCID(uint8_t * pCID) |
241 | void SDC_PrintCID(uint8_t * pCID) |
242 | { |
242 | { |
243 | uint8_t pn[6]; |
243 | uint8_t pn[6]; |
244 | uint16_t temp1, temp2; |
244 | uint16_t temp1, temp2; |
245 | 245 | ||
246 | printf("\r\n Manufacturer ID: %i\r\n", pCID[0]); |
246 | printf("\r\n Manufacturer ID: %i\r\n", pCID[0]); |
247 | memcpy(pn, &pCID[1], 2); |
247 | memcpy(pn, &pCID[1], 2); |
248 | pn[2] = '\0'; // terminate string |
248 | pn[2] = '\0'; // terminate string |
249 | printf(" Application ID: %s\r\n",pn); |
249 | printf(" Application ID: %s\r\n",pn); |
250 | memcpy(pn, &pCID[3], 5); |
250 | memcpy(pn, &pCID[3], 5); |
251 | pn[5] = '\0'; // terminate string |
251 | pn[5] = '\0'; // terminate string |
252 | printf(" Product Name: %s\r\n",pn); |
252 | printf(" Product Name: %s\r\n",pn); |
253 | printf(" Product Rev.: %i.%i\r\n",pCID[8]>>4, pCID[8]&0xF); |
253 | printf(" Product Rev.: %i.%i\r\n",pCID[8]>>4, pCID[8]&0xF); |
254 | printf(" Serial No.: "); |
254 | printf(" Serial No.: "); |
255 | for(temp1 = 0; temp1<4; temp1++) |
255 | for(temp1 = 0; temp1<4; temp1++) |
256 | { |
256 | { |
257 | printf("%02X", pCID[9+temp1]); |
257 | printf("%02X", pCID[9+temp1]); |
258 | } |
258 | } |
259 | printf("\r\n"); |
259 | printf("\r\n"); |
260 | temp1 = pCID[14] & 0x0F; // month |
260 | temp1 = pCID[14] & 0x0F; // month |
261 | temp2 = ((pCID[14]>>4)|(pCID[13]<<4)) + 2000; // year |
261 | temp2 = ((pCID[14]>>4)|(pCID[13]<<4)) + 2000; // year |
262 | printf(" Manufac. Date: %i/%i\r\n\r\n",temp1, temp2); |
262 | printf(" Manufac. Date: %i/%i\r\n\r\n",temp1, temp2); |
263 | } |
263 | } |
264 | 264 | ||
265 | //________________________________________________________________________________________________________________________________________ |
265 | //________________________________________________________________________________________________________________________________________ |
266 | // Function: SDC_GetCID(uint8_t * pCID); |
266 | // Function: SDC_GetCID(uint8_t * pCID); |
267 | // |
267 | // |
268 | // Description: This function reads the CIS register form the sd card in spi mode. |
268 | // Description: This function reads the CIS register form the sd card in spi mode. |
269 | // |
269 | // |
270 | // |
270 | // |
271 | // Returnvalue: the function returns error state |
271 | // Returnvalue: the function returns error state |
272 | //________________________________________________________________________________________________________________________________________ |
272 | //________________________________________________________________________________________________________________________________________ |
273 | 273 | ||
274 | SD_Result_t SDC_GetCID(uint8_t * pCID) |
274 | SD_Result_t SDC_GetCID(uint8_t * pCID) |
275 | { |
275 | { |
276 | return SDC_GetData(CMD_SEND_CID, 0UL, pCID, 16); |
276 | return SDC_GetData(CMD_SEND_CID, 0UL, pCID, 16); |
277 | } |
277 | } |
278 | 278 | ||
279 | //________________________________________________________________________________________________________________________________________ |
279 | //________________________________________________________________________________________________________________________________________ |
280 | // Function: SDC_GetCSD(uint8_t * pCSD); |
280 | // Function: SDC_GetCSD(uint8_t * pCSD); |
281 | // |
281 | // |
282 | // Description: This function reads the CSD register form the sd card in spi mode. |
282 | // Description: This function reads the CSD register form the sd card in spi mode. |
283 | // |
283 | // |
284 | // |
284 | // |
285 | // Returnvalue: the function returns error state |
285 | // Returnvalue: the function returns error state |
286 | //________________________________________________________________________________________________________________________________________ |
286 | //________________________________________________________________________________________________________________________________________ |
287 | 287 | ||
288 | SD_Result_t SDC_GetCSD(uint8_t * pCSD) |
288 | SD_Result_t SDC_GetCSD(uint8_t * pCSD) |
289 | { |
289 | { |
290 | return SDC_GetData(CMD_SEND_CSD, 0UL, pCSD, 16); |
290 | return SDC_GetData(CMD_SEND_CSD, 0UL, pCSD, 16); |
291 | } |
291 | } |
292 | 292 | ||
293 | 293 | ||
294 | //________________________________________________________________________________________________________________________________________ |
294 | //________________________________________________________________________________________________________________________________________ |
295 | // Function: SDC_Init(void); |
295 | // Function: SDC_Init(void); |
296 | // |
296 | // |
297 | // Description: This function initialises the SDCard to spi-mode. |
297 | // Description: This function initialises the SDCard to spi-mode. |
298 | // |
298 | // |
299 | // |
299 | // |
300 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
300 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
301 | //________________________________________________________________________________________________________________________________________ |
301 | //________________________________________________________________________________________________________________________________________ |
302 | 302 | ||
303 | SD_Result_t SDC_Init(void) |
303 | SD_Result_t SDC_Init(void) |
304 | { |
304 | { |
305 | uint16_t timeout = 0; |
305 | uint16_t timeout = 0; |
306 | uint8_t rsp[6]; // SD-SPI response buffer |
306 | uint8_t rsp[6]; // SD-SPI response buffer |
307 | SD_Result_t result = SD_ERROR_UNKNOWN; |
307 | SD_Result_t result = SD_ERROR_UNKNOWN; |
308 | 308 | ||
309 | if(SD_SWITCH) // init only if the SD-Switch is indicating a card in the slot |
309 | if(SD_SWITCH) // init only if the SD-Switch is indicating a card in the slot |
310 | { |
310 | { |
311 | printf("\r\n SSC init..."); |
311 | printf("\r\n SSC init..."); |
312 | SSC_Init(); |
312 | SSC_Init(); |
313 | printf("ok"); |
313 | printf("ok"); |
314 | 314 | ||
315 | _delay_loop_2(1050); |
315 | //_delay_loop_2(1050); |
316 | 316 | ||
317 | printf("\r\n SDC init..."); |
317 | printf("\r\n SDC init..."); |
318 | SDCardInfo.Valid = 0; |
318 | SDCardInfo.Valid = 0; |
319 | /* The host shall supply power to the card so that the voltage is reached to Vdd_min within 250ms and |
319 | /* The host shall supply power to the card so that the voltage is reached to Vdd_min within 250ms and |
320 | start to supply at least 74 SD clocks to the SD card with keeping cmd line to high. In case of SPI |
320 | start to supply at least 74 SD clocks to the SD card with keeping cmd line to high. In case of SPI |
321 | mode, CS shall be held to high during 74 clock cycles. */ |
321 | mode, CS shall be held to high during 74 clock cycles. */ |
322 | SSC_Disable(); // set SD_CS high |
322 | SSC_Disable(); // set SD_CS high |
323 | for (timeout = 0; timeout < 15; timeout++) // 15*8 = 120 cycles |
323 | for (timeout = 0; timeout < 15; timeout++) // 15*8 = 120 cycles |
324 | { |
324 | { |
325 | SSC_PutChar(0xFF); |
325 | SSC_PutChar(0xFF); |
326 | } |
326 | } |
327 | 327 | ||
328 | // switch to idle state |
328 | // switch to idle state |
329 | #ifdef _SD_DEBUG |
329 | #ifdef _SD_DEBUG |
330 | printf("\r\nGoing idle state.."); |
330 | printf("\r\nGoing idle state.."); |
331 | #endif |
331 | #endif |
332 | timeout = 0; |
332 | timeout = 0; |
333 | do |
333 | do |
334 | { |
334 | { |
335 | rsp[0] = SDC_SendCMDR1(CMD_GO_IDLE_STATE, 0UL); |
335 | rsp[0] = SDC_SendCMDR1(CMD_GO_IDLE_STATE, 0UL); |
336 | if (timeout++ > 500) |
336 | if (timeout++ > 500) |
337 | { |
337 | { |
338 | printf("reset timeout"); |
338 | printf("reset timeout"); |
339 | result = SD_ERROR_RESET; |
339 | result = SD_ERROR_RESET; |
340 | goto end; |
340 | goto end; |
341 | } |
341 | } |
342 | }while(rsp[0] != R1_IDLE_STATE); |
342 | }while(rsp[0] != R1_IDLE_STATE); |
343 | // enable crc feature |
343 | // enable crc feature |
344 | /* if(SDC_SendCMDR1(CMD_CRC_ON_OFF, 1UL) != R1_IDLE_STATE) |
344 | /* if(SDC_SendCMDR1(CMD_CRC_ON_OFF, 1UL) != R1_IDLE_STATE) |
345 | { |
345 | { |
346 | printf("Bad cmd59 R1=%02X.", rsp[0]); |
346 | printf("Bad cmd59 R1=%02X.", rsp[0]); |
347 | result = SD_ERROR_BAD_RESPONSE; |
347 | result = SD_ERROR_BAD_RESPONSE; |
348 | goto end; |
348 | goto end; |
349 | }*/ |
349 | }*/ |
350 | // check for card hw version |
350 | // check for card hw version |
351 | // 2.7-3.6V Range = 0x01, check pattern 0xAA |
351 | // 2.7-3.6V Range = 0x01, check pattern 0xAA |
352 | rsp[0] = SDC_SendCMDR1(CMD_SEND_IF_COND, 0x000001AA); |
352 | rsp[0] = SDC_SendCMDR1(CMD_SEND_IF_COND, 0x000001AA); |
353 | // answer to cmd58 is an R7 response (R1+ 4Byte IFCond) |
353 | // answer to cmd58 is an R7 response (R1+ 4Byte IFCond) |
354 | if(rsp[0] & R1_BAD_RESPONSE) |
354 | if(rsp[0] & R1_BAD_RESPONSE) |
355 | { |
355 | { |
356 | printf("Bad cmd8 R1=%02X.", rsp[0]); |
356 | printf("Bad cmd8 R1=%02X.", rsp[0]); |
357 | result = SD_ERROR_BAD_RESPONSE; |
357 | result = SD_ERROR_BAD_RESPONSE; |
358 | goto end; |
358 | goto end; |
359 | } |
359 | } |
360 | if(rsp[0] & R1_ILLEGAL_CMD) |
360 | if(rsp[0] & R1_ILLEGAL_CMD) |
361 | { |
361 | { |
362 | //Ver1.X SD Memory Card or not a SD Memory Card |
362 | //Ver1.X SD Memory Card or not a SD Memory Card |
363 | SDCardInfo.Version = VER_1X; |
363 | SDCardInfo.Version = VER_1X; |
364 | } |
364 | } |
365 | else |
365 | else |
366 | { |
366 | { |
367 | // Ver2.00 or later SD Memory Card |
367 | // Ver2.00 or later SD Memory Card |
368 | // reading the remaining bytes of the R7 response |
368 | // reading the remaining bytes of the R7 response |
369 | SDCardInfo.Version = VER_20; |
369 | SDCardInfo.Version = VER_20; |
370 | for(timeout = 1; timeout < 5; timeout++) |
370 | for(timeout = 1; timeout < 5; timeout++) |
371 | { |
371 | { |
372 | rsp[timeout] = SSC_GetChar(); |
372 | rsp[timeout] = SSC_GetChar(); |
373 | } |
373 | } |
374 | //check pattern |
374 | //check pattern |
375 | if(rsp[4]!= 0xAA) |
375 | if(rsp[4]!= 0xAA) |
376 | { |
376 | { |
377 | printf("Bad cmd8 R7 check pattern.\r\n"); |
377 | printf("Bad cmd8 R7 check pattern.\r\n"); |
378 | result = SD_ERROR_BAD_RESPONSE; |
378 | result = SD_ERROR_BAD_RESPONSE; |
379 | goto end; |
379 | goto end; |
380 | } |
380 | } |
381 | if ( (rsp[3] & 0x0F)!= 0x01 ) // voltage range is not 2.7-3.6V |
381 | if ( (rsp[3] & 0x0F)!= 0x01 ) // voltage range is not 2.7-3.6V |
382 | { |
382 | { |
383 | 383 | ||
384 | printf("Card is incompatible to 3.3V.\r\n"); |
384 | printf("Card is incompatible to 3.3V.\r\n"); |
385 | result = SD_ERROR_BAD_VOLTAGE_RANGE; |
385 | result = SD_ERROR_BAD_VOLTAGE_RANGE; |
386 | goto end; |
386 | goto end; |
387 | } |
387 | } |
388 | } |
388 | } |
389 | 389 | ||
390 | rsp[0] = SDC_SendCMDR1(CMD_READ_OCR, 0UL); |
390 | rsp[0] = SDC_SendCMDR1(CMD_READ_OCR, 0UL); |
391 | // answer to cmd58 is an R3 response (R1 + 4Byte OCR) |
391 | // answer to cmd58 is an R3 response (R1 + 4Byte OCR) |
392 | if(rsp[0] & R1_BAD_RESPONSE) |
392 | if(rsp[0] & R1_BAD_RESPONSE) |
393 | { |
393 | { |
394 | printf("Bad cmd58 R1 %02x.", rsp[0]); |
394 | printf("Bad cmd58 R1 %02x.", rsp[0]); |
395 | result = SD_ERROR_BAD_RESPONSE; |
395 | result = SD_ERROR_BAD_RESPONSE; |
396 | goto end; |
396 | goto end; |
397 | } |
397 | } |
398 | if(rsp[0] & R1_ILLEGAL_CMD) |
398 | if(rsp[0] & R1_ILLEGAL_CMD) |
399 | { |
399 | { |
400 | printf("Not an SD-CARD."); |
400 | printf("Not an SD-CARD."); |
401 | result = SD_ERROR_NO_SDCARD; |
401 | result = SD_ERROR_NO_SDCARD; |
402 | goto end; |
402 | goto end; |
403 | } |
403 | } |
404 | // read 4 bytes of OCR register |
404 | // read 4 bytes of OCR register |
405 | for(timeout = 1; timeout < 5; timeout++) |
405 | for(timeout = 1; timeout < 5; timeout++) |
406 | { |
406 | { |
407 | rsp[timeout] = SSC_GetChar(); |
407 | rsp[timeout] = SSC_GetChar(); |
408 | } |
408 | } |
409 | // FollowMe & SD-Logger uses 3.3 V, therefore check for bit 20 & 21 |
409 | // FollowMe & SD-Logger uses 3.3 V, therefore check for bit 20 & 21 |
410 | if((rsp[2] & 0x30) != 0x30) |
410 | if((rsp[2] & 0x30) != 0x30) |
411 | { |
411 | { |
412 | // supply voltage is not supported by sd-card |
412 | // supply voltage is not supported by sd-card |
413 | printf("Card is incompatible to 3.3V."); |
413 | printf("Card is incompatible to 3.3V."); |
414 | result = SD_ERROR_BAD_VOLTAGE_RANGE; |
414 | result = SD_ERROR_BAD_VOLTAGE_RANGE; |
415 | goto end; |
415 | goto end; |
416 | } |
416 | } |
417 | 417 | ||
418 | // Initialize the sd-card sending continously ACMD_SEND_OP_COND (only supported by SD cards) |
418 | // Initialize the sd-card sending continously ACMD_SEND_OP_COND (only supported by SD cards) |
419 | timeout = SetDelay(2000); // set timeout to 2000 ms (large cards tend to longer) |
419 | timeout = SetDelay(2000); // set timeout to 2000 ms (large cards tend to longer) |
420 | do |
420 | do |
421 | { |
421 | { |
422 | rsp[0] = SDC_SendACMDR1(ACMD_SEND_OP_COND, 0UL); |
422 | rsp[0] = SDC_SendACMDR1(ACMD_SEND_OP_COND, 0UL); |
423 | if(rsp[0] & R1_BAD_RESPONSE) |
423 | if(rsp[0] & R1_BAD_RESPONSE) |
424 | { |
424 | { |
425 | printf("Bad Acmd41 R1=%02X.", rsp[0]); |
425 | printf("Bad Acmd41 R1=%02X.", rsp[0]); |
426 | result = SD_ERROR_BAD_RESPONSE; |
426 | result = SD_ERROR_BAD_RESPONSE; |
427 | goto end; |
427 | goto end; |
428 | } |
428 | } |
429 | if(CheckDelay(timeout)) |
429 | if(CheckDelay(timeout)) |
430 | { |
430 | { |
431 | printf("Init timeout."); |
431 | printf("Init timeout."); |
432 | result = SD_ERROR_INITIALIZE; |
432 | result = SD_ERROR_INITIALIZE; |
433 | goto end; |
433 | goto end; |
434 | } |
434 | } |
435 | } while(rsp[0] & R1_IDLE_STATE); // loop until idle state |
435 | } while(rsp[0] & R1_IDLE_STATE); // loop until idle state |
436 | 436 | ||
437 | if(rsp[0] != R1_NO_ERR) |
437 | if(rsp[0] != R1_NO_ERR) |
438 | { |
438 | { |
439 | printf("Init error."); |
439 | printf("Init error."); |
440 | result = SD_ERROR_INITIALIZE; |
440 | result = SD_ERROR_INITIALIZE; |
441 | goto end; |
441 | goto end; |
442 | } |
442 | } |
443 | /* set block size to 512 bytes */ |
443 | /* set block size to 512 bytes */ |
444 | if(SDC_SendCMDR1(CMD_SET_BLOCKLEN, 512UL) != R1_NO_ERR) |
444 | if(SDC_SendCMDR1(CMD_SET_BLOCKLEN, 512UL) != R1_NO_ERR) |
445 | { |
445 | { |
446 | printf("Error setting block length to 512."); |
446 | printf("Error setting block length to 512."); |
447 | result = SD_ERROR_SET_BLOCKLEN; |
447 | result = SD_ERROR_SET_BLOCKLEN; |
448 | goto end; |
448 | goto end; |
449 | } |
449 | } |
450 | 450 | ||
451 | //SSC_Disable(); // set SD_CS high |
451 | //SSC_Disable(); // set SD_CS high |
452 | // here is the right place to inrease the SPI baud rate to maximum |
452 | // here is the right place to inrease the SPI baud rate to maximum |
453 | //SSC_Enable(); // set SD_CS high |
453 | //SSC_Enable(); // set SD_CS high |
454 | 454 | ||
455 | // read CID register |
455 | // read CID register |
456 | result = SDC_GetCID((uint8_t *)&SDCardInfo.CID); |
456 | result = SDC_GetCID((uint8_t *)&SDCardInfo.CID); |
457 | if(result != SD_SUCCESS) |
457 | if(result != SD_SUCCESS) |
458 | { |
458 | { |
459 | printf("Error reading CID.\r\n"); |
459 | printf("Error reading CID.\r\n"); |
460 | goto end; |
460 | goto end; |
461 | } |
461 | } |
462 | 462 | ||
463 | // read CSD register |
463 | // read CSD register |
464 | result = SDC_GetCSD((uint8_t *)&SDCardInfo.CSD); |
464 | result = SDC_GetCSD((uint8_t *)&SDCardInfo.CSD); |
465 | if(result != SD_SUCCESS) |
465 | if(result != SD_SUCCESS) |
466 | { |
466 | { |
467 | printf("Error reading CSD."); |
467 | printf("Error reading CSD."); |
468 | goto end; |
468 | goto end; |
469 | } |
469 | } |
470 | 470 | ||
471 | printf("ok\r\n"); |
471 | printf("ok\r\n"); |
472 | 472 | ||
473 | uint8_t c_size_mult, read_bl_len; |
473 | uint8_t c_size_mult, read_bl_len; |
474 | uint32_t c_size; |
474 | uint32_t c_size; |
475 | 475 | ||
476 | switch(SDCardInfo.CSD[0]>>6) // check CSD Version |
476 | switch(SDCardInfo.CSD[0]>>6) // check CSD Version |
477 | { |
477 | { |
478 | case 0x00: // if CSD is V1.0 structure (2GB limit) |
478 | case 0x00: // if CSD is V1.0 structure (2GB limit) |
479 | 479 | ||
480 | /* |
480 | /* |
481 | memory capacity = BLOCKNR * BLOCK_LEN |
481 | memory capacity = BLOCKNR * BLOCK_LEN |
482 | BLOCKNR = (C_SIZE+1) * MULT |
482 | BLOCKNR = (C_SIZE+1) * MULT |
483 | MULT = 2^(C_SIZE_MULT+2) |
483 | MULT = 2^(C_SIZE_MULT+2) |
484 | BLOCK_LEN = 2^READ_BL_LEN |
484 | BLOCK_LEN = 2^READ_BL_LEN |
485 | 485 | ||
486 | C_SIZE is 12 bits [73:62] in CSD register |
486 | C_SIZE is 12 bits [73:62] in CSD register |
487 | C_SIZE_MULT is 3 bits [49:47] in CSD register |
487 | C_SIZE_MULT is 3 bits [49:47] in CSD register |
488 | READ_BL_LEN is 4 bits [83:80] in CSD register |
488 | READ_BL_LEN is 4 bits [83:80] in CSD register |
489 | */ |
489 | */ |
490 | 490 | ||
491 | read_bl_len = (SDCardInfo.CSD[5] & 0x0F); //CSD[05] -> [87:80] |
491 | read_bl_len = (SDCardInfo.CSD[5] & 0x0F); //CSD[05] -> [87:80] |
492 | c_size = ((uint32_t)(SDCardInfo.CSD[6] & 0x03))<<10; //CSD[06] -> [79:72] |
492 | c_size = ((uint32_t)(SDCardInfo.CSD[6] & 0x03))<<10; //CSD[06] -> [79:72] |
493 | c_size |= ((uint32_t)SDCardInfo.CSD[7])<<2; //CSD[07] -> [71:64] |
493 | c_size |= ((uint32_t)SDCardInfo.CSD[7])<<2; //CSD[07] -> [71:64] |
494 | c_size |= (uint32_t)(SDCardInfo.CSD[8]>>6); //CSD[08] -> [63:56] |
494 | c_size |= (uint32_t)(SDCardInfo.CSD[8]>>6); //CSD[08] -> [63:56] |
495 | c_size_mult = (SDCardInfo.CSD[9] & 0x03)<<1; //CSD[09] -> [55:48] |
495 | c_size_mult = (SDCardInfo.CSD[9] & 0x03)<<1; //CSD[09] -> [55:48] |
496 | c_size_mult |=(SDCardInfo.CSD[10] & 0x80)>>7; //CSD[10] -> [47:40] |
496 | c_size_mult |=(SDCardInfo.CSD[10] & 0x80)>>7; //CSD[10] -> [47:40] |
497 | SDCardInfo.Capacity = (uint32_t)(c_size+1)*(1L<<(c_size_mult+2))*(1L<<read_bl_len); |
497 | SDCardInfo.Capacity = (uint32_t)(c_size+1)*(1L<<(c_size_mult+2))*(1L<<read_bl_len); |
498 | break; |
498 | break; |
499 | 499 | ||
500 | case 0x01: // if CSD is V2.0 structure (HC SD-Card > 2GB) |
500 | case 0x01: // if CSD is V2.0 structure (HC SD-Card > 2GB) |
501 | 501 | ||
502 | /* |
502 | /* |
503 | memory capacity = (C_SIZE+1) * 512K byte |
503 | memory capacity = (C_SIZE+1) * 512K byte |
504 | C_SIZE is 22 bits [69:48] in CSR register |
504 | C_SIZE is 22 bits [69:48] in CSR register |
505 | */ |
505 | */ |
506 | 506 | ||
507 | c_size = ((uint32_t)(SDCardInfo.CSD[7] & 0x3F))<<16; //CSD[07] -> [71:64] |
507 | c_size = ((uint32_t)(SDCardInfo.CSD[7] & 0x3F))<<16; //CSD[07] -> [71:64] |
508 | c_size |= ((uint32_t)SDCardInfo.CSD[8])<<8; //CSD[08] -> [63:56] |
508 | c_size |= ((uint32_t)SDCardInfo.CSD[8])<<8; //CSD[08] -> [63:56] |
509 | c_size |= (uint32_t)SDCardInfo.CSD[9]; //CSD[09] -> [55:48]; |
509 | c_size |= (uint32_t)SDCardInfo.CSD[9]; //CSD[09] -> [55:48]; |
510 | SDCardInfo.Capacity = (c_size + 1)* 512L * 1024L; |
510 | SDCardInfo.Capacity = (c_size + 1)* 512L * 1024L; |
511 | break; |
511 | break; |
512 | 512 | ||
513 | default: //unknown CSD Version |
513 | default: //unknown CSD Version |
514 | SDCardInfo.Capacity = 0; |
514 | SDCardInfo.Capacity = 0; |
515 | break; |
515 | break; |
516 | } |
516 | } |
517 | 517 | ||
518 | switch(SDCardInfo.Version) |
518 | switch(SDCardInfo.Version) |
519 | { |
519 | { |
520 | case VER_1X: |
520 | case VER_1X: |
521 | printf(" SD-CARD V1.x"); |
521 | printf("\r\n SD-CARD V1.x"); |
522 | break; |
522 | break; |
523 | case VER_20: |
523 | case VER_20: |
524 | printf(" SD-CARD V2.0 or later"); |
524 | printf("\r\n SD-CARD V2.0 or later"); |
525 | default: |
525 | default: |
526 | break; |
526 | break; |
527 | } |
527 | } |
528 | uint16_t mb_size = (uint16_t)(SDCardInfo.Capacity/(1024L*1024L)); |
528 | uint16_t mb_size = (uint16_t)(SDCardInfo.Capacity/(1024L*1024L)); |
529 | printf("\r\n Capacity = %i MB", mb_size); |
529 | printf("\r\n Capacity = %i MB", mb_size); |
530 | 530 | ||
531 | SDC_PrintCID((uint8_t *)&SDCardInfo.CID); |
531 | SDC_PrintCID((uint8_t *)&SDCardInfo.CID); |
532 | SDCardInfo.Valid = 1; |
532 | SDCardInfo.Valid = 1; |
533 | // jump point for error condition before |
533 | // jump point for error condition before |
534 | end: |
534 | end: |
535 | SSC_Disable(); |
535 | SSC_Disable(); |
536 | } |
536 | } |
537 | else |
537 | else |
538 | { |
538 | { |
539 | SSC_Deinit(); |
539 | SSC_Deinit(); |
540 | SDCardInfo.Valid = 0; |
540 | SDCardInfo.Valid = 0; |
541 | result = SD_ERROR_NOCARD; |
541 | result = SD_ERROR_NOCARD; |
542 | printf("No Card in Slot."); |
542 | printf("No Card in Slot."); |
543 | } |
543 | } |
544 | return(result); |
544 | return(result); |
545 | } |
545 | } |
546 | 546 | ||
547 | 547 | ||
548 | //________________________________________________________________________________________________________________________________________ |
548 | //________________________________________________________________________________________________________________________________________ |
549 | // Function: SDC_Deinit(void); |
549 | // Function: SDC_Deinit(void); |
550 | // |
550 | // |
551 | // Description: This function deinitialises the SDCard interface. |
551 | // Description: This function deinitialises the SDCard interface. |
552 | // |
552 | // |
553 | // |
553 | // |
554 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
554 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
555 | //________________________________________________________________________________________________________________________________________ |
555 | //________________________________________________________________________________________________________________________________________ |
556 | 556 | ||
557 | SD_Result_t SDC_Deinit(void) |
557 | SD_Result_t SDC_Deinit(void) |
558 | { |
558 | { |
559 | printf("\r\n SDC deinit..."); |
559 | printf("\r\n SDC deinit..."); |
560 | SSC_Deinit(); |
560 | SSC_Deinit(); |
561 | 561 | ||
562 | SDCardInfo.Valid = 0; |
562 | SDCardInfo.Valid = 0; |
563 | SDCardInfo.Capacity = 0; |
563 | SDCardInfo.Capacity = 0; |
564 | SDCardInfo.Version = VER_UNKNOWN; |
564 | SDCardInfo.Version = VER_UNKNOWN; |
565 | 565 | ||
566 | printf("ok"); |
566 | printf("ok"); |
567 | return(SD_SUCCESS); |
567 | return(SD_SUCCESS); |
568 | } |
568 | } |
569 | 569 | ||
570 | //________________________________________________________________________________________________________________________________________ |
570 | //________________________________________________________________________________________________________________________________________ |
571 | // Function: SDC_PutSector(uint32_t addr, const uint8_t *Buffer) |
571 | // Function: SDC_PutSector(uint32_t addr, const uint8_t *Buffer) |
572 | // |
572 | // |
573 | // Description: This function writes one sector of data to the SSC |
573 | // Description: This function writes one sector of data to the SSC |
574 | // |
574 | // |
575 | // |
575 | // |
576 | // Returnvalue: SD_Result_t |
576 | // Returnvalue: SD_Result_t |
577 | //________________________________________________________________________________________________________________________________________ |
577 | //________________________________________________________________________________________________________________________________________ |
578 | 578 | ||
579 | SD_Result_t SDC_PutSector(uint32_t addr, const uint8_t *Buffer) |
579 | SD_Result_t SDC_PutSector(uint32_t addr, const uint8_t *Buffer) |
580 | { |
580 | { |
581 | uint8_t rsp; |
581 | uint8_t rsp; |
582 | uint16_t a, crc16; |
582 | uint16_t a, crc16; |
583 | uint16_t timeout = 0; |
583 | uint16_t timeout = 0; |
584 | SD_Result_t result = SD_ERROR_UNKNOWN; |
584 | SD_Result_t result = SD_ERROR_UNKNOWN; |
585 | 585 | ||
586 | addr = addr << 9; // convert sectoradress to byteadress |
586 | addr = addr << 9; // convert sectoradress to byteadress |
587 | rsp = SDC_SendCMDR1(CMD_WRITE_SINGLE_BLOCK, addr); |
587 | rsp = SDC_SendCMDR1(CMD_WRITE_SINGLE_BLOCK, addr); |
588 | if (rsp != R1_NO_ERR) |
588 | if (rsp != R1_NO_ERR) |
589 | { |
589 | { |
590 | result = SD_ERROR_BAD_RESPONSE; |
590 | result = SD_ERROR_BAD_RESPONSE; |
591 | goto end; |
591 | goto end; |
592 | } |
592 | } |
593 | 593 | ||
594 | for (a=0;a<20;a++) // at least one byte |
594 | for (a=0;a<20;a++) // at least one byte |
595 | { |
595 | { |
596 | SSC_GetChar(); |
596 | SSC_GetChar(); |
597 | } |
597 | } |
598 | crc16 = CRC16(Buffer, 512); // calc checksum for data block |
598 | crc16 = CRC16(Buffer, 512); // calc checksum for data block |
599 | SSC_PutChar(DATA_START_TOKEN); // send data start of header to the SSC |
599 | SSC_PutChar(DATA_START_TOKEN); // send data start of header to the SSC |
600 | 600 | ||
601 | for (a=0;a<512;a++) // transmit one sector (normaly 512bytes) of data to the sdcard. |
601 | for (a=0;a<512;a++) // transmit one sector (normaly 512bytes) of data to the sdcard. |
602 | { |
602 | { |
603 | SSC_PutChar(Buffer[a]); |
603 | SSC_PutChar(Buffer[a]); |
604 | } |
604 | } |
605 | // write two bytes of crc16 to the sdcard |
605 | // write two bytes of crc16 to the sdcard |
606 | SSC_PutChar((uint8_t)(crc16>>8)); // write high byte first |
606 | SSC_PutChar((uint8_t)(crc16>>8)); // write high byte first |
607 | SSC_PutChar((uint8_t)(0x00FF&crc16)); // lowbyte last |
607 | SSC_PutChar((uint8_t)(0x00FF&crc16)); // lowbyte last |
608 | 608 | ||
609 | do // wait for data response token |
609 | do // wait for data response token |
610 | { |
610 | { |
611 | rsp = SSC_GetChar(); |
611 | rsp = SSC_GetChar(); |
612 | if(timeout++ > 500) |
612 | if(timeout++ > 500) |
613 | { |
613 | { |
614 | result = SD_ERROR_TIMEOUT; |
614 | result = SD_ERROR_TIMEOUT; |
615 | goto end; |
615 | goto end; |
616 | } |
616 | } |
617 | }while((rsp & 0x11) != 0x01 ); |
617 | }while((rsp & 0x11) != 0x01 ); |
618 | // analyse data response token |
618 | // analyse data response token |
619 | switch(rsp & DATA_RESPONSE_MASK) |
619 | switch(rsp & DATA_RESPONSE_MASK) |
620 | { |
620 | { |
621 | case DATA_RESPONSE_OK: |
621 | case DATA_RESPONSE_OK: |
622 | result = SD_SUCCESS; |
622 | result = SD_SUCCESS; |
623 | break; |
623 | break; |
624 | case DATA_RESPONSE_CRC_ERR: |
624 | case DATA_RESPONSE_CRC_ERR: |
625 | result = SD_ERROR_CRC_DATA; |
625 | result = SD_ERROR_CRC_DATA; |
626 | goto end; |
626 | goto end; |
627 | break; |
627 | break; |
628 | case DATA_RESPONSE_WRITE_ERR: |
628 | case DATA_RESPONSE_WRITE_ERR: |
629 | result = SD_ERROR_WRITE_DATA; |
629 | result = SD_ERROR_WRITE_DATA; |
630 | goto end; |
630 | goto end; |
631 | break; |
631 | break; |
632 | default: |
632 | default: |
633 | result = SD_ERROR_UNKNOWN; |
633 | result = SD_ERROR_UNKNOWN; |
634 | goto end; |
634 | goto end; |
635 | break; |
635 | break; |
636 | 636 | ||
637 | } |
637 | } |
638 | // wait 2 seconds until the sdcard is busy. |
638 | // wait 2 seconds until the sdcard is busy. |
639 | rsp = SDC_WaitForBusy(2000); |
639 | rsp = SDC_WaitForBusy(2000); |
640 | if(rsp != 0xFF) |
640 | if(rsp != 0xFF) |
641 | { |
641 | { |
642 | result = SD_ERROR_TIMEOUT; |
642 | result = SD_ERROR_TIMEOUT; |
643 | goto end; |
643 | goto end; |
644 | } |
644 | } |
645 | 645 | ||
646 | // check card status |
646 | // check card status |
647 | rsp = SDC_SendCMDR1(CMD_SEND_STATUS, 0); |
647 | rsp = SDC_SendCMDR1(CMD_SEND_STATUS, 0); |
648 | // first byte of R2 response is like R1 response |
648 | // first byte of R2 response is like R1 response |
649 | if(rsp != R1_NO_ERR) |
649 | if(rsp != R1_NO_ERR) |
650 | { |
650 | { |
651 | result = SD_ERROR_BAD_RESPONSE; |
651 | result = SD_ERROR_BAD_RESPONSE; |
652 | SSC_GetChar(); // read out 2nd byte |
652 | SSC_GetChar(); // read out 2nd byte |
653 | goto end; |
653 | goto end; |
654 | } |
654 | } |
655 | // 2nd byte of r2 response |
655 | // 2nd byte of r2 response |
656 | rsp = SSC_GetChar(); |
656 | rsp = SSC_GetChar(); |
657 | if(rsp != R2_NO_ERR) |
657 | if(rsp != R2_NO_ERR) |
658 | { |
658 | { |
659 | result = SD_ERROR_WRITE_DATA; |
659 | result = SD_ERROR_WRITE_DATA; |
660 | SSC_GetChar(); |
660 | SSC_GetChar(); |
661 | goto end; |
661 | goto end; |
662 | } |
662 | } |
663 | end: |
663 | end: |
664 | if(result != SD_SUCCESS) |
664 | if(result != SD_SUCCESS) |
665 | { |
665 | { |
666 | printf("Error %02X writing data to sd card (R=%02X).\r\n", result, rsp); |
666 | printf("Error %02X writing data to sd card (R=%02X).\r\n", result, rsp); |
667 | } |
667 | } |
668 | return(result); |
668 | return(result); |
669 | } |
669 | } |
670 | 670 | ||
671 | 671 | ||
672 | 672 | ||
673 | 673 | ||
674 | //________________________________________________________________________________________________________________________________________ |
674 | //________________________________________________________________________________________________________________________________________ |
675 | // Function: SDC_GetSector(uint32_t addr,uint8_t *Buffer); |
675 | // Function: SDC_GetSector(uint32_t addr,uint8_t *Buffer); |
676 | // |
676 | // |
677 | // Description: This function reads one sector of data from the SSC |
677 | // Description: This function reads one sector of data from the SSC |
678 | // |
678 | // |
679 | // |
679 | // |
680 | // Returnvalue: SD_Result_t |
680 | // Returnvalue: SD_Result_t |
681 | //________________________________________________________________________________________________________________________________________ |
681 | //________________________________________________________________________________________________________________________________________ |
682 | 682 | ||
683 | SD_Result_t SDC_GetSector(uint32_t addr,uint8_t *Buffer) |
683 | SD_Result_t SDC_GetSector(uint32_t addr,uint8_t *Buffer) |
684 | { |
684 | { |
685 | addr = addr << 9; // convert sectoradress to byteadress |
685 | addr = addr << 9; // convert sectoradress to byteadress |
686 | return SDC_GetData(CMD_READ_SINGLE_BLOCK, addr, Buffer, 512); |
686 | return SDC_GetData(CMD_READ_SINGLE_BLOCK, addr, Buffer, 512); |
687 | } |
687 | } |
688 | 688 | ||
689 | 689 |