Rev 24 | Rev 41 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
1 | ingob | 1 | /*#######################################################################################*/ |
2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
||
3 | /*#######################################################################################*/ |
||
4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
5 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
||
6 | // + Nur für den privaten Gebrauch |
||
7 | // + FOR NON COMMERCIAL USE ONLY |
||
8 | // + www.MikroKopter.com |
||
9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
10 | // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
||
11 | // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
||
12 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
||
13 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
||
14 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
||
15 | // + Verkauf von Luftbildaufnahmen, usw. |
||
16 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
17 | // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
||
18 | // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
||
19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
20 | // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
||
21 | // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
||
22 | // + eindeutig als Ursprung verlinkt werden |
||
23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
24 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
||
25 | // + Benutzung auf eigene Gefahr |
||
26 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
||
27 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
28 | // + Die PORTIERUNG der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
||
29 | // + mit unserer Zustimmung zulässig |
||
30 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
31 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
||
32 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
33 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
||
34 | // + this list of conditions and the following disclaimer. |
||
35 | // + * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived |
||
36 | // + from this software without specific prior written permission. |
||
37 | // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
||
38 | // + for non-commercial use (directly or indirectly) |
||
39 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
||
40 | // + with our written permission |
||
41 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
||
42 | // + clearly linked as origin |
||
43 | // + * PORTING this software (or part of it) to systems (other than hardware from www.mikrokopter.de) is NOT allowed |
||
44 | // |
||
45 | // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
||
46 | // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
||
47 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
||
48 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
||
49 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
||
50 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
||
51 | // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
||
52 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
||
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 |
||
55 | // + POSSIBILITY OF SUCH DAMAGE. |
||
56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
24 | StephanB | 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" |
||
1 | ingob | 64 | #include "main.h" |
24 | StephanB | 65 | #include "crc16.h" |
1 | ingob | 66 | |
67 | //________________________________________________________________________________________________________________________________________ |
||
24 | StephanB | 68 | // Module name: sdc.c |
1 | ingob | 69 | // Compiler used: avr-gcc 3.4.5 |
24 | StephanB | 70 | // Last Modifikation: 08.06.2008 |
71 | // Version: 1.07 |
||
72 | // Authors: Stephan Busker, Gregor Stobrawa |
||
73 | // Description: Source files for connecting to an sd-card using the SSC |
||
1 | ingob | 74 | // |
75 | //........................................................................................................................................ |
||
24 | StephanB | 76 | // Functions: SD_Result_t SDC_init(void); |
77 | // u8 SDC_PutCommand (u8 *cmd); |
||
78 | // SD_Result_t SDC_PutSector(u32 addr,u8 *Buffer); |
||
79 | // SD_Result_t SDC_GetSector(u32 addr,u8 *Buffer); |
||
1 | ingob | 80 | // |
81 | ////........................................................................................................................................ |
||
82 | // ext. functions: extern void SSC_Init(void); |
||
24 | StephanB | 83 | // extern u8 SSC_GetChar (void); |
1 | ingob | 84 | // extern void SSC_PutChar (u8); |
85 | // extern void SSC_Enable(void); |
||
86 | // extern void SSC_Disable(void); |
||
24 | StephanB | 87 | // extern void SSC_ClearRxFifo(); |
1 | ingob | 88 | //........................................................................................................................................ |
89 | // |
||
90 | // URL: www.Mikro-Control.de |
||
91 | // mailto: stephan.busker@mikro-control.de |
||
92 | //________________________________________________________________________________________________________________________________________ |
||
93 | |||
94 | |||
95 | |||
24 | StephanB | 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 */ |
||
1 | ingob | 109 | |
24 | StephanB | 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 |
||
150 | } __attribute__((packed)) SDCardInfo_t; |
||
151 | |||
152 | volatile SDCardInfo_t SDCardInfo; |
||
153 | |||
154 | |||
1 | ingob | 155 | //________________________________________________________________________________________________________________________________________ |
24 | StephanB | 156 | // Function: CRC7(u8* cmd, u32 len); |
1 | ingob | 157 | // |
24 | StephanB | 158 | // Description: This function calculated the CRC7 checksum used in the last byte of a spi command frame. |
1 | ingob | 159 | // |
160 | // |
||
24 | StephanB | 161 | // Returnvalue: the function returns the crc7 including bit 0 set to 1 |
1 | ingob | 162 | //________________________________________________________________________________________________________________________________________ |
163 | |||
24 | StephanB | 164 | u8 CRC7(u8 * cmd, u32 len) |
1 | ingob | 165 | { |
24 | StephanB | 166 | u8 i, a; |
167 | u8 crc, Data; |
||
1 | ingob | 168 | |
24 | StephanB | 169 | crc = 0; // init CRC buffer |
170 | for (a = 0; a < len ;a++) // for every byte in the msg |
||
171 | { |
||
172 | Data = cmd[a]; |
||
173 | for (i=0;i<8;i++) // for every bit in the byte |
||
174 | { |
||
175 | crc <<= 1; // shift crc |
||
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); |
||
182 | } |
||
1 | ingob | 183 | |
24 | StephanB | 184 | u8 SDC_WaitForBusy() |
185 | { |
||
186 | u8 rsp = 0; |
||
187 | u16 timeout=0; |
||
1 | ingob | 188 | |
24 | StephanB | 189 | SSC_ClearRxFifo(); |
190 | SSC_Enable(); // enable chipselect. |
||
191 | do |
||
1 | ingob | 192 | { |
24 | StephanB | 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); |
||
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 |
||
208 | //________________________________________________________________________________________________________________________________________ |
||
209 | u8 SDC_SendCMDR1(u8 CmdNo, u32 arg) |
||
210 | { |
||
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) */; |
||
223 | cmd[0] = 0x40|CmdNo; // set command index |
||
224 | cmd[1] = (arg & 0xFF000000)>>24; |
||
225 | cmd[2] = (arg & 0x00FF0000)>>16; |
||
226 | cmd[3] = (arg & 0x0000FF00)>>8; |
||
227 | cmd[4] = (arg & 0x000000FF); |
||
228 | cmd[5] = CRC7(cmd, 5); // update checksum |
||
229 | for (a = 0;a < 6; a++) // send the command sequence to the sdcard (6 bytes) |
||
230 | { |
||
231 | SSC_PutChar(cmd[a]); |
||
1 | ingob | 232 | } |
24 | StephanB | 233 | SSC_ClearRxFifo(); // clear the rx fifo to discard the bytes received during the transmission of the 6 command bytes |
234 | do |
||
1 | ingob | 235 | { |
24 | StephanB | 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); |
||
1 | ingob | 240 | } |
241 | |||
242 | |||
24 | StephanB | 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 |
||
250 | //________________________________________________________________________________________________________________________________________ |
||
251 | u8 SDC_SendACMDR1(u8 CmdNo, u32 arg) |
||
252 | { |
||
253 | u8 r1 = 0xFF; |
||
254 | r1 = SDC_SendCMDR1(CMD_APP_CMD, 0UL); |
||
255 | if(r1 & R1_BAD_RESPONSE) return(r1); |
||
256 | r1 = SDC_SendCMDR1(CmdNo, arg); |
||
257 | return(r1); |
||
258 | } |
||
1 | ingob | 259 | |
260 | |||
261 | //________________________________________________________________________________________________________________________________________ |
||
24 | StephanB | 262 | // Function: SDC_GetData(u8 * cmd ,u8 *Buffer, u32 len); |
1 | ingob | 263 | // |
24 | StephanB | 264 | // Description: This function sneds cmd an reads a datablock of len from the sd-card |
1 | ingob | 265 | // |
266 | // |
||
24 | StephanB | 267 | // Returnvalue: SD_Result_t |
1 | ingob | 268 | //________________________________________________________________________________________________________________________________________ |
269 | |||
24 | StephanB | 270 | SD_Result_t SDC_GetData(u8 CmdNo, u32 addr, u8 *Buffer, u32 len) |
1 | ingob | 271 | { |
24 | StephanB | 272 | u8 rsp; |
273 | u16 timeout; |
||
274 | u16 a, Crc16; |
||
275 | SD_Result_t result = SD_ERROR_UNKNOWN; |
||
1 | ingob | 276 | |
24 | StephanB | 277 | // send the command |
278 | rsp = SDC_SendCMDR1(CmdNo, addr); |
||
279 | if (rsp != R1_NO_ERR) |
||
1 | ingob | 280 | { |
24 | StephanB | 281 | result = SD_ERROR_BAD_RESPONSE; |
282 | goto end; |
||
1 | ingob | 283 | } |
284 | SSC_ClearRxFifo(); |
||
24 | StephanB | 285 | do |
1 | ingob | 286 | { |
24 | StephanB | 287 | rsp = SSC_GetChar(); |
288 | if((rsp & 0xF0) == 0x00) // data error token |
||
1 | ingob | 289 | { |
24 | StephanB | 290 | result = SD_ERROR_READ_DATA; |
291 | goto end; |
||
1 | ingob | 292 | } |
24 | StephanB | 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(); |
||
1 | ingob | 299 | } |
24 | StephanB | 300 | // Read two bytes CRC16-Data checksum |
301 | Crc16 = SSC_GetChar(); // highbyte fisrt |
||
302 | Crc16 = (Crc16<<8)|SSC_GetChar(); // lowbyte last |
||
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); |
||
311 | SerialPutString(text); |
||
312 | } |
||
313 | return(result); |
||
314 | } |
||
1 | ingob | 315 | |
24 | StephanB | 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); |
||
341 | SerialPutString(text); |
||
342 | sprintf(text, "Product Rev.: %i.%i\r\n",pCID[8]>>4, pCID[8]&0xF); |
||
343 | SerialPutString(text); |
||
344 | SerialPutString("Serial No.: "); |
||
345 | for(temp1 = 0; temp1<4; temp1++) |
||
346 | { |
||
347 | sprintf(text,"%02X", pCID[9+temp1]); |
||
348 | SerialPutString(text); |
||
349 | } |
||
350 | SerialPutString("\r\n"); |
||
351 | temp1 = pCID[14] & 0x0F; // month |
||
352 | temp2 = ((pCID[14]>>4)|(pCID[13]<<4)) + 2000; // year |
||
353 | sprintf(text, "Manufac. Date: %i/%i\r\n\r\n",temp1, temp2); |
||
354 | SerialPutString(text); |
||
1 | ingob | 355 | } |
356 | |||
24 | StephanB | 357 | //________________________________________________________________________________________________________________________________________ |
358 | // Funtion: SDC_GetCID(u8 * pCID); |
||
359 | // |
||
360 | // Description: This function reads the CIS register form the sd card in spi mode. |
||
361 | // |
||
362 | // |
||
363 | // Returnvalue: the function returns error state |
||
364 | //________________________________________________________________________________________________________________________________________ |
||
1 | ingob | 365 | |
24 | StephanB | 366 | SD_Result_t SDC_GetCID(u8 * pCID) |
367 | { |
||
368 | return SDC_GetData(CMD_SEND_CID, 0UL, pCID, 16); |
||
369 | } |
||
1 | ingob | 370 | |
24 | StephanB | 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 | //________________________________________________________________________________________________________________________________________ |
||
1 | ingob | 379 | |
24 | StephanB | 380 | SD_Result_t SDC_GetCSD(u8 * pCSD) |
381 | { |
||
382 | return SDC_GetData(CMD_SEND_CSD, 0UL, pCSD, 16); |
||
383 | } |
||
384 | |||
385 | |||
1 | ingob | 386 | //________________________________________________________________________________________________________________________________________ |
24 | StephanB | 387 | // Funtion: SDC_Init(void); |
1 | ingob | 388 | // |
24 | StephanB | 389 | // Description: This function initialises the SDCard to spi-mode. |
1 | ingob | 390 | // |
391 | // |
||
24 | StephanB | 392 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
1 | ingob | 393 | //________________________________________________________________________________________________________________________________________ |
394 | |||
24 | StephanB | 395 | SD_Result_t SDC_Init(void) |
1 | ingob | 396 | { |
24 | StephanB | 397 | u32 Timeout = 0; |
398 | u8 text[50]; |
||
399 | u8 rsp[6]; // SD-SPI response buffer |
||
400 | SD_Result_t result = SD_ERROR_UNKNOWN; |
||
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 |
||
1 | ingob | 415 | |
24 | StephanB | 416 | for (Timeout = 0; Timeout < 15; Timeout++) // 15*8 = 120 cycles |
417 | { |
||
418 | SSC_PutChar(0xFF); |
||
419 | } |
||
420 | |||
421 | // switch to idle state |
||
422 | while(SDC_SendCMDR1(CMD_GO_IDLE_STATE, 0UL) != R1_IDLE_STATE) |
||
423 | { |
||
424 | if (Timeout++ > 20) |
||
425 | { |
||
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 |
||
458 | // reading the remaining bytes of the R7 response |
||
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 | } |
||
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 |
||
496 | for(Timeout = 1; Timeout < 5; Timeout++) |
||
497 | { |
||
498 | rsp[Timeout] = SSC_GetChar(); |
||
499 | } |
||
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; |
||
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 | } |
||
1 | ingob | 542 | |
24 | StephanB | 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 | } |
||
1 | ingob | 555 | |
24 | StephanB | 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 | } |
||
1 | ingob | 563 | |
24 | StephanB | 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] |
||
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 | |||
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; |
||
27 | holgerb | 604 | break; |
605 | default: //unknown CSD Version |
||
24 | StephanB | 606 | SDCardInfo.Capacity = 0; |
607 | break; |
||
608 | } |
||
609 | |||
610 | switch(SDCardInfo.Version) |
||
611 | { |
||
612 | case VER_1X: |
||
613 | SerialPutString(" SD-CARD V1.x"); |
||
614 | break; |
||
615 | case VER_20: |
||
616 | SerialPutString(" SD-CARD V2.0 or later"); |
||
617 | default: |
||
618 | break; |
||
619 | } |
||
620 | u16 mb_size = (u16)(SDCardInfo.Capacity/(1024L*1024L)); |
||
621 | sprintf(text, "\r\n Capacity = %i MB", mb_size); |
||
622 | SerialPutString(text); |
||
623 | |||
624 | // SDC_PrintCID((u8 *)&SDCardInfo.CID); |
||
625 | SDCardInfo.Valid = 1; |
||
626 | |||
627 | // jump point for error condition before |
||
628 | end: |
||
629 | SSC_Disable(); |
||
630 | } |
||
631 | else |
||
1 | ingob | 632 | { |
24 | StephanB | 633 | //SerialPutString("\r\nNo Card in Slot."); |
634 | SSC_Deinit(); |
||
635 | SDCardInfo.Valid = 0; |
||
636 | result = SD_ERROR_NOCARD; |
||
1 | ingob | 637 | } |
27 | holgerb | 638 | // if(result != SD_SUCCESS) SerialPutString("nok "); |
1 | ingob | 639 | |
24 | StephanB | 640 | return(result); |
1 | ingob | 641 | } |
642 | |||
643 | |||
644 | //________________________________________________________________________________________________________________________________________ |
||
24 | StephanB | 645 | // Funtion: SDC_Deinit(void); |
1 | ingob | 646 | // |
24 | StephanB | 647 | // Description: This function deinitialises the SDCard interface. |
1 | ingob | 648 | // |
649 | // |
||
24 | StephanB | 650 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
1 | ingob | 651 | //________________________________________________________________________________________________________________________________________ |
652 | |||
24 | StephanB | 653 | SD_Result_t SDC_Deinit(void) |
654 | { |
||
655 | SerialPutString("SDC deinit..."); |
||
656 | SSC_Deinit(); |
||
1 | ingob | 657 | |
24 | StephanB | 658 | SDCardInfo.Valid = 0; |
659 | SDCardInfo.Capacity = 0; |
||
660 | SDCardInfo.Version = VER_UNKNOWN; |
||
1 | ingob | 661 | |
24 | StephanB | 662 | SerialPutString("ok\r\n"); |
663 | return(SD_SUCCESS); |
||
1 | ingob | 664 | } |
665 | |||
666 | |||
667 | //________________________________________________________________________________________________________________________________________ |
||
24 | StephanB | 668 | // Funtion: SDC_PutSector(void); |
1 | ingob | 669 | // |
24 | StephanB | 670 | // Description: This function writes one sector of data to the SSC |
1 | ingob | 671 | // |
672 | // |
||
24 | StephanB | 673 | // Returnvalue: SD_Result_t |
1 | ingob | 674 | //________________________________________________________________________________________________________________________________________ |
675 | |||
24 | StephanB | 676 | SD_Result_t SDC_PutSector(u32 addr, const u8 *Buffer) |
677 | { |
||
678 | u8 rsp; |
||
679 | u16 timeout = 0; |
||
680 | u16 a, Crc16; |
||
681 | //u32 Timeout = 0; |
||
682 | SD_Result_t result = SD_ERROR_UNKNOWN; |
||
683 | |||
684 | addr = addr << 9; // convert sectoradress to byteadress |
||
685 | rsp = SDC_SendCMDR1(CMD_WRITE_SINGLE_BLOCK, addr); |
||
686 | if (rsp != R1_NO_ERR) |
||
1 | ingob | 687 | { |
24 | StephanB | 688 | result = SD_ERROR_BAD_RESPONSE; |
689 | goto end; |
||
1 | ingob | 690 | } |
691 | SSC_ClearRxFifo(); |
||
24 | StephanB | 692 | for (a=0;a<20;a++) // at least one byte |
1 | ingob | 693 | { |
24 | StephanB | 694 | SSC_GetChar(); |
1 | ingob | 695 | } |
24 | StephanB | 696 | Crc16 = CRC16(Buffer, 512); // calc checksum for data block |
697 | SSC_PutChar(DATA_START_TOKEN); // send data start of header to the SSC |
||
1 | ingob | 698 | |
24 | StephanB | 699 | for (a=0;a<512;a++) // transmit one sector (normaly 512bytes) of data to the sdcard. |
700 | { |
||
701 | SSC_PutChar(Buffer[a]); |
||
702 | } |
||
703 | // write two bytes of crc16 to the sdcard |
||
704 | SSC_PutChar((u8)(Crc16>>8)); // write high byte first |
||
705 | SSC_PutChar((u8)(0x00FF&Crc16)); // lowbyte last |
||
706 | SSC_ClearRxFifo(); |
||
707 | do // wait for data response token |
||
708 | { |
||
709 | rsp = SSC_GetChar(); |
||
710 | if(timeout++>500) break; |
||
711 | }while((rsp & 0x11) != 0x01 ); |
||
712 | // analyse data response token |
||
713 | switch(rsp & DATA_RESPONSE_MASK) |
||
714 | { |
||
715 | case DATA_RESPONSE_OK: |
||
716 | result = SD_SUCCESS; |
||
717 | break; |
||
718 | case DATA_RESPONSE_CRC_ERR: |
||
719 | result = SD_ERROR_CRC_DATA; |
||
720 | goto end; |
||
721 | break; |
||
722 | case DATA_RESPONSE_WRITE_ERR: |
||
723 | result = SD_ERROR_WRITE_DATA; |
||
724 | goto end; |
||
725 | break; |
||
726 | default: |
||
727 | result = SD_ERROR_UNKNOWN; |
||
728 | goto end; |
||
729 | break; |
||
730 | |||
731 | } |
||
732 | // wait until the sdcard is busy. |
||
733 | rsp = SDC_WaitForBusy(); |
||
734 | if(rsp != 0xFF) |
||
735 | { |
||
736 | result = SD_ERROR_TIMEOUT; |
||
737 | goto end; |
||
738 | } |
||
739 | // check card status |
||
740 | rsp = SDC_SendCMDR1(CMD_SEND_STATUS, 0); |
||
741 | if(rsp != R1_NO_ERR) |
||
742 | { |
||
743 | result = SD_ERROR_BAD_RESPONSE; |
||
744 | SSC_GetChar(); |
||
745 | goto end; |
||
746 | } |
||
747 | // 2nd byte of r2 response |
||
748 | rsp = SSC_GetChar(); |
||
749 | if(rsp != R2_NO_ERR) |
||
750 | { |
||
751 | result = SD_ERROR_WRITE_DATA; |
||
752 | SSC_GetChar(); |
||
753 | goto end; |
||
754 | } |
||
755 | end: |
||
756 | //SSC_Disable(); // disable sdcard. |
||
757 | if(result != SD_SUCCESS) |
||
758 | { |
||
759 | sprintf(text,"Error %02X writing data to sd card (R=%02X).\r\n", result, rsp); |
||
760 | SerialPutString(text); |
||
761 | } |
||
762 | return(result); |
||
763 | } |
||
764 | |||
765 | |||
766 | //________________________________________________________________________________________________________________________________________ |
||
767 | // Funtion: SDC_GetSector(u32 addr,u8 *Buffer); |
||
768 | // |
||
769 | // Description: This function reads one sector of data from the SSC |
||
770 | // |
||
771 | // |
||
772 | // Returnvalue: SD_Result_t |
||
773 | //________________________________________________________________________________________________________________________________________ |
||
774 | |||
775 | SD_Result_t SDC_GetSector(u32 addr,u8 *Buffer) |
||
776 | { |
||
777 | addr = addr << 9; // convert sectoradress to byteadress |
||
778 | return SDC_GetData(CMD_READ_SINGLE_BLOCK, addr, Buffer, 512); |
||
1 | ingob | 779 | } |
780 | |||
781 | |||
782 |