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1 | /*#######################################################################################*/ |
1 | /*#######################################################################################*/ |
2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
3 | /*#######################################################################################*/ |
3 | /*#######################################################################################*/ |
4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
5 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
5 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
6 | // + Nur für den privaten Gebrauch |
6 | // + Nur für den privaten Gebrauch / NON-COMMERCIAL USE ONLY |
7 | // + FOR NON COMMERCIAL USE ONLY |
7 | // + FOR NON COMMERCIAL USE ONLY |
8 | // + www.MikroKopter.com |
8 | // + www.MikroKopter.com |
9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
10 | // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
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. |
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 |
12 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
13 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
13 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
14 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
14 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
15 | // + Verkauf von Luftbildaufnahmen, usw. |
15 | // + Verkauf von Luftbildaufnahmen, usw. |
16 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
16 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
17 | // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
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 |
18 | // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
20 | // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
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" |
21 | // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
22 | // + eindeutig als Ursprung verlinkt werden |
22 | // + eindeutig als Ursprung verlinkt werden |
23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
24 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
24 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
25 | // + Benutzung auf eigene Gefahr |
25 | // + Benutzung auf eigene Gefahr |
26 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
26 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
27 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
27 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
28 | // + Die PORTIERUNG der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
28 | // + Die Portierung oder Nutzung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
29 | // + mit unserer Zustimmung zulässig |
29 | // + mit unserer Zustimmung zulässig |
30 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
30 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
31 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
31 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
32 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
32 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
33 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
33 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
34 | // + this list of conditions and the following disclaimer. |
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 |
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. |
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 |
37 | // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
38 | // + for non-commercial use (directly or indirectly) |
38 | // + for non-commercial use (directly or indirectly) |
39 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
39 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
40 | // + with our written permission |
40 | // + with our written permission |
41 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
41 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
42 | // + clearly linked as origin |
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 |
43 | // + * porting the sources to other systems or using the software on other systems (except hardware from www.mikrokopter.de) is not allowed |
44 | // |
44 | // |
45 | // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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 |
46 | // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
47 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
47 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
48 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
48 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
49 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
49 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
50 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
50 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
51 | // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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 |
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> |
57 | #include <stdio.h> |
58 | #include <string.h> |
58 | #include <string.h> |
59 | #include "91x_lib.h" |
59 | #include "91x_lib.h" |
60 | #include "uart1.h" |
60 | #include "uart1.h" |
61 | #include "sdc.h" |
61 | #include "sdc.h" |
62 | #include "ssc.h" |
62 | #include "ssc.h" |
63 | #include "timer.h" |
63 | #include "timer.h" |
64 | #include "main.h" |
64 | #include "main.h" |
65 | #include "crc16.h" |
65 | #include "crc16.h" |
66 | 66 | ||
67 | //________________________________________________________________________________________________________________________________________ |
67 | //________________________________________________________________________________________________________________________________________ |
68 | // Module name: sdc.c |
68 | // Module name: sdc.c |
69 | // Compiler used: avr-gcc 3.4.5 |
69 | // Compiler used: avr-gcc 3.4.5 |
70 | // Last Modifikation: 08.06.2008 |
70 | // Last Modifikation: 08.06.2008 |
71 | // Version: 1.07 |
71 | // Version: 1.07 |
72 | // Authors: Stephan Busker, Gregor Stobrawa |
72 | // Authors: Stephan Busker, Gregor Stobrawa |
73 | // Description: Source files for connecting to an sd-card using the SSC |
73 | // Description: Source files for connecting to an sd-card using the SSC |
74 | // |
74 | // |
75 | //........................................................................................................................................ |
75 | //........................................................................................................................................ |
76 | // Functions: SD_Result_t SDC_init(void); |
76 | // Functions: SD_Result_t SDC_init(void); |
77 | // u8 SDC_PutCommand (u8 *cmd); |
77 | // u8 SDC_PutCommand (u8 *cmd); |
78 | // SD_Result_t SDC_PutSector(u32 addr,u8 *Buffer); |
78 | // SD_Result_t SDC_PutSector(u32 addr,u8 *Buffer); |
79 | // SD_Result_t SDC_GetSector(u32 addr,u8 *Buffer); |
79 | // SD_Result_t SDC_GetSector(u32 addr,u8 *Buffer); |
80 | // |
80 | // |
81 | ////........................................................................................................................................ |
81 | ////........................................................................................................................................ |
82 | // ext. functions: extern void SSC_Init(void); |
82 | // ext. functions: extern void SSC_Init(void); |
83 | // extern u8 SSC_GetChar (void); |
83 | // extern u8 SSC_GetChar (void); |
84 | // extern void SSC_PutChar (u8); |
84 | // extern void SSC_PutChar (u8); |
85 | // extern void SSC_Enable(void); |
85 | // extern void SSC_Enable(void); |
86 | // extern void SSC_Disable(void); |
86 | // extern void SSC_Disable(void); |
87 | // extern void SSC_ClearRxFifo(); |
87 | // extern void SSC_ClearRxFifo(); |
88 | //........................................................................................................................................ |
88 | //........................................................................................................................................ |
89 | // |
89 | // |
90 | // URL: www.Mikro-Control.de |
90 | // URL: www.Mikro-Control.de |
91 | // mailto: stephan.busker@mikro-control.de |
91 | // mailto: stephan.busker@mikro-control.de |
92 | //________________________________________________________________________________________________________________________________________ |
92 | //________________________________________________________________________________________________________________________________________ |
93 | 93 | ||
94 | 94 | ||
95 | 95 | ||
96 | #define CMD_GO_IDLE_STATE 0x00 /* CMD00: response R1 */ |
96 | #define CMD_GO_IDLE_STATE 0x00 /* CMD00: response R1 */ |
97 | #define CMD_SEND_OP_COND 0x01 /* CMD01: response R1 */ |
97 | #define CMD_SEND_OP_COND 0x01 /* CMD01: response R1 */ |
98 | #define CMD_SEND_IF_COND 0x08 /* CMD08: response R7 */ |
98 | #define CMD_SEND_IF_COND 0x08 /* CMD08: response R7 */ |
99 | #define CMD_SEND_CSD 0x09 /* CMD09: response R1 */ |
99 | #define CMD_SEND_CSD 0x09 /* CMD09: response R1 */ |
100 | #define CMD_SEND_CID 0x0A /* CMD10: response R1 */ |
100 | #define CMD_SEND_CID 0x0A /* CMD10: response R1 */ |
101 | #define CMD_SEND_STATUS 0x0D /* CMD13: response R2 */ |
101 | #define CMD_SEND_STATUS 0x0D /* CMD13: response R2 */ |
102 | #define CMD_SET_BLOCKLEN 0x10 /* CMD16: arg0[31:0]: block length, response R1*/ |
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 */ |
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 */ |
104 | #define CMD_WRITE_SINGLE_BLOCK 0x18 /* CMD24: arg0[31:0]: data address, response R1 */ |
105 | #define CMD_APP_CMD 0x37 /* CMD55: response R1 */ |
105 | #define CMD_APP_CMD 0x37 /* CMD55: response R1 */ |
106 | #define CMD_READ_OCR 0x3A /* CMD58: response R3 */ |
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 */ |
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 */ |
108 | #define ACMD_SEND_OP_COND 0x29 /* ACMD41: arg0[31]: stuff bits, arg0[30]: HCS, arg0[29:0] stuff bits*, response R1 */ |
109 | 109 | ||
110 | #define R1_NO_ERR 0x00 |
110 | #define R1_NO_ERR 0x00 |
111 | #define R1_IDLE_STATE 0x01 |
111 | #define R1_IDLE_STATE 0x01 |
112 | #define R1_ERASE_RESET 0x02 |
112 | #define R1_ERASE_RESET 0x02 |
113 | #define R1_ILLEGAL_CMD 0x04 |
113 | #define R1_ILLEGAL_CMD 0x04 |
114 | #define R1_COM_CRC_ERR 0x08 |
114 | #define R1_COM_CRC_ERR 0x08 |
115 | #define R1_ERASE_SEQUENCE_ERR 0x10 |
115 | #define R1_ERASE_SEQUENCE_ERR 0x10 |
116 | #define R1_ADDRESS_ERR 0x20 |
116 | #define R1_ADDRESS_ERR 0x20 |
117 | #define R1_PARAMETER_ERR 0x40 |
117 | #define R1_PARAMETER_ERR 0x40 |
118 | #define R1_BAD_RESPONSE 0x80 |
118 | #define R1_BAD_RESPONSE 0x80 |
119 | 119 | ||
120 | #define R2_NO_ERR 0x00 |
120 | #define R2_NO_ERR 0x00 |
121 | #define R2_CARD_LOCKED 0x01 |
121 | #define R2_CARD_LOCKED 0x01 |
122 | #define R2_ERASE_WRITE_PROT_ERR 0x02 |
122 | #define R2_ERASE_WRITE_PROT_ERR 0x02 |
123 | #define R2_UNKOWN_ERR 0x04 |
123 | #define R2_UNKOWN_ERR 0x04 |
124 | #define R2_CARD_CTRL_ERR 0x08 |
124 | #define R2_CARD_CTRL_ERR 0x08 |
125 | #define R2_CARD_ECC_ERR 0x10 |
125 | #define R2_CARD_ECC_ERR 0x10 |
126 | #define R2_WRITE_PROT_ERR 0x20 |
126 | #define R2_WRITE_PROT_ERR 0x20 |
127 | #define R2_ERASE_PARAM_ERR 0x40 |
127 | #define R2_ERASE_PARAM_ERR 0x40 |
128 | #define R2_OUT_OF_RANGE_ERR 0x80 |
128 | #define R2_OUT_OF_RANGE_ERR 0x80 |
129 | 129 | ||
130 | #define DATA_START_TOKEN 0xFE |
130 | #define DATA_START_TOKEN 0xFE |
131 | #define DATA_RESPONSE_MASK 0x1F |
131 | #define DATA_RESPONSE_MASK 0x1F |
132 | #define DATA_RESPONSE_OK 0x05 |
132 | #define DATA_RESPONSE_OK 0x05 |
133 | #define DATA_RESPONSE_CRC_ERR 0x0B |
133 | #define DATA_RESPONSE_CRC_ERR 0x0B |
134 | #define DATA_RESPONSE_WRITE_ERR 0x1D |
134 | #define DATA_RESPONSE_WRITE_ERR 0x1D |
135 | 135 | ||
136 | typedef enum |
136 | typedef enum |
137 | { |
137 | { |
138 | VER_UNKNOWN, |
138 | VER_UNKNOWN, |
139 | VER_1X, |
139 | VER_1X, |
140 | VER_20 |
140 | VER_20 |
141 | } SDVersion_t; |
141 | } SDVersion_t; |
142 | 142 | ||
143 | typedef struct |
143 | typedef struct |
144 | { |
144 | { |
145 | u8 Valid; |
145 | u8 Valid; |
146 | SDVersion_t Version; // HW-Version |
146 | SDVersion_t Version; // HW-Version |
147 | u32 Capacity; // Memory capacity in bytes |
147 | u32 Capacity; // Memory capacity in bytes |
148 | u8 CID[16]; // CID register |
148 | u8 CID[16]; // CID register |
149 | u8 CSD[16]; // CSD register |
149 | u8 CSD[16]; // CSD register |
150 | } __attribute__((packed)) SDCardInfo_t; |
150 | } __attribute__((packed)) SDCardInfo_t; |
151 | 151 | ||
152 | volatile SDCardInfo_t SDCardInfo; |
152 | volatile SDCardInfo_t SDCardInfo; |
153 | 153 | ||
154 | 154 | ||
155 | //________________________________________________________________________________________________________________________________________ |
155 | //________________________________________________________________________________________________________________________________________ |
156 | // Function: CRC7(u8* cmd, u32 len); |
156 | // Function: CRC7(u8* cmd, u32 len); |
157 | // |
157 | // |
158 | // Description: This function calculated the CRC7 checksum used in the last byte of a spi command frame. |
158 | // Description: This function calculated the CRC7 checksum used in the last byte of a spi command frame. |
159 | // |
159 | // |
160 | // |
160 | // |
161 | // Returnvalue: the function returns the crc7 including bit 0 set to 1 |
161 | // Returnvalue: the function returns the crc7 including bit 0 set to 1 |
162 | //________________________________________________________________________________________________________________________________________ |
162 | //________________________________________________________________________________________________________________________________________ |
163 | 163 | ||
164 | u8 CRC7(u8 * cmd, u32 len) |
164 | u8 CRC7(u8 * cmd, u32 len) |
165 | { |
165 | { |
166 | u8 i, a; |
166 | u8 i, a; |
167 | u8 crc, Data; |
167 | u8 crc, Data; |
168 | 168 | ||
169 | crc = 0; // init CRC buffer |
169 | crc = 0; // init CRC buffer |
170 | for (a = 0; a < len ;a++) // for every byte in the msg |
170 | for (a = 0; a < len ;a++) // for every byte in the msg |
171 | { |
171 | { |
172 | Data = cmd[a]; |
172 | Data = cmd[a]; |
173 | for (i=0;i<8;i++) // for every bit in the byte |
173 | for (i=0;i<8;i++) // for every bit in the byte |
174 | { |
174 | { |
175 | crc <<= 1; // shift crc |
175 | crc <<= 1; // shift crc |
176 | if ((Data & 0x80)^(crc & 0x80)) crc ^=0x09; //xor |
176 | if ((Data & 0x80)^(crc & 0x80)) crc ^=0x09; //xor |
177 | Data <<= 1; // shift data for next bit |
177 | Data <<= 1; // shift data for next bit |
178 | } |
178 | } |
179 | } |
179 | } |
180 | crc = (crc<<1)|1; // set terminating bit to 1 |
180 | crc = (crc<<1)|1; // set terminating bit to 1 |
181 | return(crc); |
181 | return(crc); |
182 | } |
182 | } |
183 | 183 | ||
184 | u8 SDC_WaitForBusy(u32 timeout) |
184 | u8 SDC_WaitForBusy(u32 timeout) |
185 | { |
185 | { |
186 | u8 rsp = 0; |
186 | u8 rsp = 0; |
187 | u32 timestamp = 0; |
187 | u32 timestamp = 0; |
188 | 188 | ||
189 | SSC_ClearRxFifo(); |
189 | SSC_ClearRxFifo(); |
190 | SSC_Enable(); // enable chipselect. |
190 | SSC_Enable(); // enable chipselect. |
191 | timestamp = SetDelay(timeout); |
191 | timestamp = SetDelay(timeout); |
192 | do |
192 | do |
193 | { |
193 | { |
194 | rsp = SSC_GetChar(); |
194 | rsp = SSC_GetChar(); |
195 | if(CheckDelay(timestamp)) break; |
195 | if(CheckDelay(timestamp)) break; |
196 | }while(rsp != 0xFF); // wait while card is busy (data out low) |
196 | }while(rsp != 0xFF); // wait while card is busy (data out low) |
197 | return(rsp); |
197 | return(rsp); |
198 | } |
198 | } |
199 | 199 | ||
200 | 200 | ||
201 | 201 | ||
202 | //________________________________________________________________________________________________________________________________________ |
202 | //________________________________________________________________________________________________________________________________________ |
203 | // Function: SDC_SendCMDR1(u8 CmdNo, u32 arg); |
203 | // Function: SDC_SendCMDR1(u8 CmdNo, u32 arg); |
204 | // |
204 | // |
205 | // Description: This function send a command frame to the SD-Card in spi-mode. |
205 | // Description: This function send a command frame to the SD-Card in spi-mode. |
206 | // |
206 | // |
207 | // |
207 | // |
208 | // Returnvalue: The function returns the first response byte like for R1 commands |
208 | // Returnvalue: The function returns the first response byte like for R1 commands |
209 | //________________________________________________________________________________________________________________________________________ |
209 | //________________________________________________________________________________________________________________________________________ |
210 | u8 SDC_SendCMDR1(u8 CmdNo, u32 arg) |
210 | u8 SDC_SendCMDR1(u8 CmdNo, u32 arg) |
211 | { |
211 | { |
212 | u8 r1; |
212 | u8 r1; |
213 | u16 timeout = 0; |
213 | u16 timeout = 0; |
214 | u16 a; |
214 | u16 a; |
215 | u8 cmd[6]; |
215 | u8 cmd[6]; |
216 | 216 | ||
217 | SSC_ClearRxFifo(); // clear the rx fifo |
217 | SSC_ClearRxFifo(); // clear the rx fifo |
218 | SSC_Enable(); // enable chipselect. |
218 | SSC_Enable(); // enable chipselect. |
219 | SDC_WaitForBusy(500); // wait 500ms until card is busy |
219 | SDC_WaitForBusy(500); // wait 500ms until card is busy |
220 | SSC_ClearRxFifo(); // clear the rx fifo |
220 | SSC_ClearRxFifo(); // clear the rx fifo |
221 | SSC_GetChar(); // dummy to sync |
221 | SSC_GetChar(); // dummy to sync |
222 | 222 | ||
223 | cmd[0] = 0x40|CmdNo; // set command index |
223 | cmd[0] = 0x40|CmdNo; // set command index |
224 | cmd[1] = (arg & 0xFF000000)>>24; |
224 | cmd[1] = (arg & 0xFF000000)>>24; |
225 | cmd[2] = (arg & 0x00FF0000)>>16; |
225 | cmd[2] = (arg & 0x00FF0000)>>16; |
226 | cmd[3] = (arg & 0x0000FF00)>>8; |
226 | cmd[3] = (arg & 0x0000FF00)>>8; |
227 | cmd[4] = (arg & 0x000000FF); |
227 | cmd[4] = (arg & 0x000000FF); |
228 | cmd[5] = CRC7(cmd, 5); // update checksum |
228 | cmd[5] = CRC7(cmd, 5); // update checksum |
229 | for (a = 0;a < 6; a++) // send the command sequence to the sdcard (6 bytes) |
229 | for (a = 0;a < 6; a++) // send the command sequence to the sdcard (6 bytes) |
230 | { |
230 | { |
231 | SSC_PutChar(cmd[a]); |
231 | SSC_PutChar(cmd[a]); |
232 | } |
232 | } |
233 | SSC_ClearRxFifo(); // clear the rx fifo to discard the bytes received during the transmission of the 6 command bytes |
233 | SSC_ClearRxFifo(); // clear the rx fifo to discard the bytes received during the transmission of the 6 command bytes |
234 | 234 | ||
235 | do |
235 | do |
236 | { |
236 | { |
237 | r1 = SSC_GetChar(); // get byte from sd-card |
237 | r1 = SSC_GetChar(); // get byte from sd-card |
238 | if (timeout++ >500) break; |
238 | if (timeout++ >500) break; |
239 | }while(r1 == 0xFF); // wait for the response byte from sd-card. |
239 | }while(r1 == 0xFF); // wait for the response byte from sd-card. |
240 | return(r1); |
240 | return(r1); |
241 | } |
241 | } |
242 | 242 | ||
243 | 243 | ||
244 | //________________________________________________________________________________________________________________________________________ |
244 | //________________________________________________________________________________________________________________________________________ |
245 | // Function: SDC_SendACMDR1(u8 CmdNo, u32 arg); |
245 | // Function: SDC_SendACMDR1(u8 CmdNo, u32 arg); |
246 | // |
246 | // |
247 | // Description: This function send a application command frame to the SD-Card in spi-mode. |
247 | // Description: This function send a application command frame to the SD-Card in spi-mode. |
248 | // |
248 | // |
249 | // |
249 | // |
250 | // Returnvalue: The function returns the first response byte like for R1 commands |
250 | // Returnvalue: The function returns the first response byte like for R1 commands |
251 | //________________________________________________________________________________________________________________________________________ |
251 | //________________________________________________________________________________________________________________________________________ |
252 | u8 SDC_SendACMDR1(u8 CmdNo, u32 arg) |
252 | u8 SDC_SendACMDR1(u8 CmdNo, u32 arg) |
253 | { |
253 | { |
254 | u8 r1 = 0xFF; |
254 | u8 r1 = 0xFF; |
255 | r1 = SDC_SendCMDR1(CMD_APP_CMD, 0UL); |
255 | r1 = SDC_SendCMDR1(CMD_APP_CMD, 0UL); |
256 | if(r1 & R1_BAD_RESPONSE) return(r1); |
256 | if(r1 & R1_BAD_RESPONSE) return(r1); |
257 | r1 = SDC_SendCMDR1(CmdNo, arg); |
257 | r1 = SDC_SendCMDR1(CmdNo, arg); |
258 | return(r1); |
258 | return(r1); |
259 | } |
259 | } |
260 | 260 | ||
261 | 261 | ||
262 | //________________________________________________________________________________________________________________________________________ |
262 | //________________________________________________________________________________________________________________________________________ |
263 | // Function: SDC_GetData(u8 * cmd ,u8 *Buffer, u32 len); |
263 | // Function: SDC_GetData(u8 * cmd ,u8 *Buffer, u32 len); |
264 | // |
264 | // |
265 | // Description: This function sneds cmd an reads a datablock of len from the sd-card |
265 | // Description: This function sneds cmd an reads a datablock of len from the sd-card |
266 | // |
266 | // |
267 | // |
267 | // |
268 | // Returnvalue: SD_Result_t |
268 | // Returnvalue: SD_Result_t |
269 | //________________________________________________________________________________________________________________________________________ |
269 | //________________________________________________________________________________________________________________________________________ |
270 | 270 | ||
271 | SD_Result_t SDC_GetData(u8 CmdNo, u32 addr, u8 *Buffer, u32 len) |
271 | SD_Result_t SDC_GetData(u8 CmdNo, u32 addr, u8 *Buffer, u32 len) |
272 | { |
272 | { |
273 | u8 rsp; |
273 | u8 rsp; |
274 | u16 a, crc16; |
274 | u16 a, crc16; |
275 | SD_Result_t result = SD_ERROR_UNKNOWN; |
275 | SD_Result_t result = SD_ERROR_UNKNOWN; |
276 | 276 | ||
277 | // send the command |
277 | // send the command |
278 | rsp = SDC_SendCMDR1(CmdNo, addr); |
278 | rsp = SDC_SendCMDR1(CmdNo, addr); |
279 | if (rsp != R1_NO_ERR) |
279 | if (rsp != R1_NO_ERR) |
280 | { |
280 | { |
281 | result = SD_ERROR_BAD_RESPONSE; |
281 | result = SD_ERROR_BAD_RESPONSE; |
282 | goto end; |
282 | goto end; |
283 | } |
283 | } |
284 | SSC_ClearRxFifo(); |
284 | SSC_ClearRxFifo(); |
285 | do |
285 | do |
286 | { |
286 | { |
287 | rsp = SSC_GetChar(); |
287 | rsp = SSC_GetChar(); |
288 | if((rsp & 0xF0) == 0x00) // data error token |
288 | if((rsp & 0xF0) == 0x00) // data error token |
289 | { |
289 | { |
290 | result = SD_ERROR_READ_DATA; |
290 | result = SD_ERROR_READ_DATA; |
291 | goto end; |
291 | goto end; |
292 | } |
292 | } |
293 | }while(rsp != DATA_START_TOKEN); |
293 | }while(rsp != DATA_START_TOKEN); |
294 | // data start token received |
294 | // data start token received |
295 | for (a = 0; a < len; a++) // read the block from the SSC |
295 | for (a = 0; a < len; a++) // read the block from the SSC |
296 | { |
296 | { |
297 | Buffer[a] = SSC_GetChar(); |
297 | Buffer[a] = SSC_GetChar(); |
298 | } |
298 | } |
299 | // Read two bytes CRC16-Data checksum |
299 | // Read two bytes CRC16-Data checksum |
300 | crc16 = SSC_GetChar(); // highbyte fisrt |
300 | crc16 = SSC_GetChar(); // highbyte fisrt |
301 | crc16 = (crc16<<8)|SSC_GetChar(); // lowbyte last |
301 | crc16 = (crc16<<8)|SSC_GetChar(); // lowbyte last |
302 | /* if(crc16 != CRC16(Buffer, len)) result = SD_ERROR_CRC_DATA; |
302 | /* if(crc16 != CRC16(Buffer, len)) result = SD_ERROR_CRC_DATA; |
303 | else */result = SD_SUCCESS; |
303 | else */result = SD_SUCCESS; |
304 | 304 | ||
305 | end: |
305 | end: |
306 | if(result != SD_SUCCESS) |
306 | if(result != SD_SUCCESS) |
307 | { |
307 | { |
308 | sprintf(text,"Error %02X reading data from sd card (R1=%02X).\r\n", result, rsp); |
308 | sprintf(text,"Error %02X reading data from sd card (R1=%02X).\r\n", result, rsp); |
309 | SerialPutString(text); |
309 | SerialPutString(text); |
310 | } |
310 | } |
311 | return(result); |
311 | return(result); |
312 | } |
312 | } |
313 | 313 | ||
314 | 314 | ||
315 | //________________________________________________________________________________________________________________________________________ |
315 | //________________________________________________________________________________________________________________________________________ |
316 | // Function: SDC_PrintCID(u8 * pCID); |
316 | // Function: SDC_PrintCID(u8 * pCID); |
317 | // |
317 | // |
318 | // Description: This function prints the CIS register in a human readable format. |
318 | // Description: This function prints the CIS register in a human readable format. |
319 | // |
319 | // |
320 | // |
320 | // |
321 | // Returnvalue: the function returns nothing |
321 | // Returnvalue: the function returns nothing |
322 | //________________________________________________________________________________________________________________________________________ |
322 | //________________________________________________________________________________________________________________________________________ |
323 | 323 | ||
324 | void SDC_PrintCID(u8 * pCID) |
324 | void SDC_PrintCID(u8 * pCID) |
325 | { |
325 | { |
326 | u8 pn[6]; |
326 | u8 pn[6]; |
327 | u16 temp1, temp2; |
327 | u16 temp1, temp2; |
328 | 328 | ||
329 | sprintf(text, "\r\n Manufacturer ID: %i\r\n", pCID[0]); |
329 | sprintf(text, "\r\n Manufacturer ID: %i\r\n", pCID[0]); |
330 | SerialPutString(text); |
330 | SerialPutString(text); |
331 | memcpy(pn, &pCID[1], 2); |
331 | memcpy(pn, &pCID[1], 2); |
332 | pn[2] = '\0'; // terminate string |
332 | pn[2] = '\0'; // terminate string |
333 | sprintf(text, " Application ID: %s\r\n",pn); |
333 | sprintf(text, " Application ID: %s\r\n",pn); |
334 | SerialPutString(text); |
334 | SerialPutString(text); |
335 | memcpy(pn, &pCID[3], 5); |
335 | memcpy(pn, &pCID[3], 5); |
336 | pn[5] = '\0'; // terminate string |
336 | pn[5] = '\0'; // terminate string |
337 | sprintf(text, " Product Name: %s\r\n",pn); |
337 | sprintf(text, " Product Name: %s\r\n",pn); |
338 | SerialPutString(text); |
338 | SerialPutString(text); |
339 | sprintf(text, " Product Rev.: %i.%i\r\n",pCID[8]>>4, pCID[8]&0xF); |
339 | sprintf(text, " Product Rev.: %i.%i\r\n",pCID[8]>>4, pCID[8]&0xF); |
340 | SerialPutString(text); |
340 | SerialPutString(text); |
341 | SerialPutString(" Serial No.: "); |
341 | SerialPutString(" Serial No.: "); |
342 | for(temp1 = 0; temp1<4; temp1++) |
342 | for(temp1 = 0; temp1<4; temp1++) |
343 | { |
343 | { |
344 | sprintf(text,"%02X", pCID[9+temp1]); |
344 | sprintf(text,"%02X", pCID[9+temp1]); |
345 | SerialPutString(text); |
345 | SerialPutString(text); |
346 | } |
346 | } |
347 | SerialPutString("\r\n"); |
347 | SerialPutString("\r\n"); |
348 | temp1 = pCID[14] & 0x0F; // month |
348 | temp1 = pCID[14] & 0x0F; // month |
349 | temp2 = ((pCID[14]>>4)|(pCID[13]<<4)) + 2000; // year |
349 | temp2 = ((pCID[14]>>4)|(pCID[13]<<4)) + 2000; // year |
350 | sprintf(text, " Manufac. Date: %i/%i\r\n\r\n",temp1, temp2); |
350 | sprintf(text, " Manufac. Date: %i/%i\r\n\r\n",temp1, temp2); |
351 | SerialPutString(text); |
351 | SerialPutString(text); |
352 | } |
352 | } |
353 | 353 | ||
354 | //________________________________________________________________________________________________________________________________________ |
354 | //________________________________________________________________________________________________________________________________________ |
355 | // Funtion: SDC_GetCID(u8 * pCID); |
355 | // Funtion: SDC_GetCID(u8 * pCID); |
356 | // |
356 | // |
357 | // Description: This function reads the CIS register form the sd card in spi mode. |
357 | // Description: This function reads the CIS register form the sd card in spi mode. |
358 | // |
358 | // |
359 | // |
359 | // |
360 | // Returnvalue: the function returns error state |
360 | // Returnvalue: the function returns error state |
361 | //________________________________________________________________________________________________________________________________________ |
361 | //________________________________________________________________________________________________________________________________________ |
362 | 362 | ||
363 | SD_Result_t SDC_GetCID(u8 * pCID) |
363 | SD_Result_t SDC_GetCID(u8 * pCID) |
364 | { |
364 | { |
365 | return SDC_GetData(CMD_SEND_CID, 0UL, pCID, 16); |
365 | return SDC_GetData(CMD_SEND_CID, 0UL, pCID, 16); |
366 | } |
366 | } |
367 | 367 | ||
368 | //________________________________________________________________________________________________________________________________________ |
368 | //________________________________________________________________________________________________________________________________________ |
369 | // Funtion: SDC_GetCSD(u8 * pCSD); |
369 | // Funtion: SDC_GetCSD(u8 * pCSD); |
370 | // |
370 | // |
371 | // Description: This function reads the CSD register form the sd card in spi mode. |
371 | // Description: This function reads the CSD register form the sd card in spi mode. |
372 | // |
372 | // |
373 | // |
373 | // |
374 | // Returnvalue: the function returns error state |
374 | // Returnvalue: the function returns error state |
375 | //________________________________________________________________________________________________________________________________________ |
375 | //________________________________________________________________________________________________________________________________________ |
376 | 376 | ||
377 | SD_Result_t SDC_GetCSD(u8 * pCSD) |
377 | SD_Result_t SDC_GetCSD(u8 * pCSD) |
378 | { |
378 | { |
379 | return SDC_GetData(CMD_SEND_CSD, 0UL, pCSD, 16); |
379 | return SDC_GetData(CMD_SEND_CSD, 0UL, pCSD, 16); |
380 | } |
380 | } |
381 | 381 | ||
382 | 382 | ||
383 | //________________________________________________________________________________________________________________________________________ |
383 | //________________________________________________________________________________________________________________________________________ |
384 | // Funtion: SDC_Init(void); |
384 | // Funtion: SDC_Init(void); |
385 | // |
385 | // |
386 | // Description: This function initialises the SDCard to spi-mode. |
386 | // Description: This function initialises the SDCard to spi-mode. |
387 | // |
387 | // |
388 | // |
388 | // |
389 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
389 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
390 | //________________________________________________________________________________________________________________________________________ |
390 | //________________________________________________________________________________________________________________________________________ |
391 | 391 | ||
392 | SD_Result_t SDC_Init(void) |
392 | SD_Result_t SDC_Init(void) |
393 | { |
393 | { |
394 | u32 timeout = 0; |
394 | u32 timeout = 0; |
395 | u8 rsp[6]; // SD-SPI response buffer |
395 | u8 rsp[6]; // SD-SPI response buffer |
396 | SD_Result_t result = SD_ERROR_UNKNOWN; |
396 | SD_Result_t result = SD_ERROR_UNKNOWN; |
397 | 397 | ||
398 | if(SD_SWITCH) // init only if the SD-Switch is indicating a card in the slot |
398 | if(SD_SWITCH) // init only if the SD-Switch is indicating a card in the slot |
399 | { |
399 | { |
400 | SerialPutString("\r\n SSC init..."); |
400 | SerialPutString("\r\n SSC init..."); |
401 | SSC_Init(); |
401 | SSC_Init(); |
402 | SerialPutString("ok"); |
402 | SerialPutString("ok"); |
403 | 403 | ||
404 | SerialPutString("\r\n SDC init..."); |
404 | SerialPutString("\r\n SDC init..."); |
405 | SDCardInfo.Valid = 0; |
405 | SDCardInfo.Valid = 0; |
406 | /* The host shall supply power to the card so that the voltage is reached to Vdd_min within 250ms and |
406 | /* The host shall supply power to the card so that the voltage is reached to Vdd_min within 250ms and |
407 | start to supply at least 74 SD clocks to the SD card with keeping cmd line to high. In case of SPI |
407 | start to supply at least 74 SD clocks to the SD card with keeping cmd line to high. In case of SPI |
408 | mode, CS shall be held to high during 74 clock cycles. */ |
408 | mode, CS shall be held to high during 74 clock cycles. */ |
409 | SSC_Disable(); // set SD_CS high |
409 | SSC_Disable(); // set SD_CS high |
410 | SSC_ClearRxFifo(); // clear the rx fifo |
410 | SSC_ClearRxFifo(); // clear the rx fifo |
411 | 411 | ||
412 | for (timeout = 0; timeout < 15; timeout++) // 15*8 = 120 cycles |
412 | for (timeout = 0; timeout < 15; timeout++) // 15*8 = 120 cycles |
413 | { |
413 | { |
414 | SSC_PutChar(0xFF); |
414 | SSC_PutChar(0xFF); |
415 | } |
415 | } |
416 | 416 | ||
417 | // switch to idle state |
417 | // switch to idle state |
418 | while(SDC_SendCMDR1(CMD_GO_IDLE_STATE, 0UL) != R1_IDLE_STATE) |
418 | while(SDC_SendCMDR1(CMD_GO_IDLE_STATE, 0UL) != R1_IDLE_STATE) |
419 | { |
419 | { |
420 | if (timeout++ > 20) |
420 | if (timeout++ > 20) |
421 | { |
421 | { |
422 | SerialPutString("reset timeout"); |
422 | SerialPutString("reset timeout"); |
423 | result = SD_ERROR_RESET; |
423 | result = SD_ERROR_RESET; |
424 | goto end; |
424 | goto end; |
425 | } |
425 | } |
426 | } |
426 | } |
427 | // enable crc feature |
427 | // enable crc feature |
428 | /* if(SDC_SendCMDR1(CMD_CRC_ON_OFF, 1UL) != R1_IDLE_STATE) |
428 | /* if(SDC_SendCMDR1(CMD_CRC_ON_OFF, 1UL) != R1_IDLE_STATE) |
429 | { |
429 | { |
430 | sprintf(text,"Bad cmd59 R1=%02X.", rsp[0]); |
430 | sprintf(text,"Bad cmd59 R1=%02X.", rsp[0]); |
431 | SerialPutString(text); |
431 | SerialPutString(text); |
432 | result = SD_ERROR_BAD_RESPONSE; |
432 | result = SD_ERROR_BAD_RESPONSE; |
433 | goto end; |
433 | goto end; |
434 | }*/ |
434 | }*/ |
435 | // check for card hw version |
435 | // check for card hw version |
436 | // 2.7-3.6V Range = 0x01, check pattern 0xAA |
436 | // 2.7-3.6V Range = 0x01, check pattern 0xAA |
437 | rsp[0] = SDC_SendCMDR1(CMD_SEND_IF_COND, 0x000001AA); |
437 | rsp[0] = SDC_SendCMDR1(CMD_SEND_IF_COND, 0x000001AA); |
438 | // answer to cmd58 is an R7 response (R1+ 4Byte IFCond) |
438 | // answer to cmd58 is an R7 response (R1+ 4Byte IFCond) |
439 | if(rsp[0] & R1_BAD_RESPONSE) |
439 | if(rsp[0] & R1_BAD_RESPONSE) |
440 | { |
440 | { |
441 | sprintf(text,"Bad cmd8 R1=%02X.", rsp[0]); |
441 | sprintf(text,"Bad cmd8 R1=%02X.", rsp[0]); |
442 | SerialPutString(text); |
442 | SerialPutString(text); |
443 | result = SD_ERROR_BAD_RESPONSE; |
443 | result = SD_ERROR_BAD_RESPONSE; |
444 | goto end; |
444 | goto end; |
445 | } |
445 | } |
446 | if(rsp[0] & R1_ILLEGAL_CMD) |
446 | if(rsp[0] & R1_ILLEGAL_CMD) |
447 | { |
447 | { |
448 | //Ver1.X SD Memory Card or not a SD Memory Card |
448 | //Ver1.X SD Memory Card or not a SD Memory Card |
449 | SDCardInfo.Version = VER_1X; |
449 | SDCardInfo.Version = VER_1X; |
450 | } |
450 | } |
451 | else |
451 | else |
452 | { |
452 | { |
453 | // Ver2.00 or later SD Memory Card |
453 | // Ver2.00 or later SD Memory Card |
454 | // reading the remaining bytes of the R7 response |
454 | // reading the remaining bytes of the R7 response |
455 | SDCardInfo.Version = VER_20; |
455 | SDCardInfo.Version = VER_20; |
456 | for(timeout = 1; timeout < 5; timeout++) |
456 | for(timeout = 1; timeout < 5; timeout++) |
457 | { |
457 | { |
458 | rsp[timeout] = SSC_GetChar(); |
458 | rsp[timeout] = SSC_GetChar(); |
459 | } |
459 | } |
460 | //check pattern |
460 | //check pattern |
461 | if(rsp[4]!= 0xAA) |
461 | if(rsp[4]!= 0xAA) |
462 | { |
462 | { |
463 | SerialPutString("Bad cmd8 R7 check pattern.\r\n"); |
463 | SerialPutString("Bad cmd8 R7 check pattern.\r\n"); |
464 | result = SD_ERROR_BAD_RESPONSE; |
464 | result = SD_ERROR_BAD_RESPONSE; |
465 | goto end; |
465 | goto end; |
466 | } |
466 | } |
467 | if ( (rsp[3] & 0x0F)!= 0x01 ) // voltage range is not 2.7-3.6V |
467 | if ( (rsp[3] & 0x0F)!= 0x01 ) // voltage range is not 2.7-3.6V |
468 | { |
468 | { |
469 | 469 | ||
470 | SerialPutString("Card is incompatible to 3.3V.\r\n"); |
470 | SerialPutString("Card is incompatible to 3.3V.\r\n"); |
471 | result = SD_ERROR_BAD_VOLTAGE_RANGE; |
471 | result = SD_ERROR_BAD_VOLTAGE_RANGE; |
472 | goto end; |
472 | goto end; |
473 | } |
473 | } |
474 | } |
474 | } |
475 | 475 | ||
476 | rsp[0] = SDC_SendCMDR1(CMD_READ_OCR, 0UL); |
476 | rsp[0] = SDC_SendCMDR1(CMD_READ_OCR, 0UL); |
477 | // answer to cmd58 is an R3 response (R1 + 4Byte OCR) |
477 | // answer to cmd58 is an R3 response (R1 + 4Byte OCR) |
478 | if(rsp[0] & R1_BAD_RESPONSE) |
478 | if(rsp[0] & R1_BAD_RESPONSE) |
479 | { |
479 | { |
480 | sprintf(text,"Bad cmd58 R1 %02x.", rsp[0]); |
480 | sprintf(text,"Bad cmd58 R1 %02x.", rsp[0]); |
481 | SerialPutString(text); |
481 | SerialPutString(text); |
482 | result = SD_ERROR_BAD_RESPONSE; |
482 | result = SD_ERROR_BAD_RESPONSE; |
483 | goto end; |
483 | goto end; |
484 | } |
484 | } |
485 | if(rsp[0] & R1_ILLEGAL_CMD) |
485 | if(rsp[0] & R1_ILLEGAL_CMD) |
486 | { |
486 | { |
487 | SerialPutString("Not an SD-CARD."); |
487 | SerialPutString("Not an SD-CARD."); |
488 | result = SD_ERROR_NO_SDCARD; |
488 | result = SD_ERROR_NO_SDCARD; |
489 | goto end; |
489 | goto end; |
490 | } |
490 | } |
491 | // read 4 bytes of OCR register |
491 | // read 4 bytes of OCR register |
492 | for(timeout = 1; timeout < 5; timeout++) |
492 | for(timeout = 1; timeout < 5; timeout++) |
493 | { |
493 | { |
494 | rsp[timeout] = SSC_GetChar(); |
494 | rsp[timeout] = SSC_GetChar(); |
495 | } |
495 | } |
496 | // NavicCtrl uses 3.3 V, therefore check for bit 20 & 21 |
496 | // NavicCtrl uses 3.3 V, therefore check for bit 20 & 21 |
497 | if((rsp[2] & 0x30) != 0x30) |
497 | if((rsp[2] & 0x30) != 0x30) |
498 | { |
498 | { |
499 | // supply voltage is not supported by sd-card |
499 | // supply voltage is not supported by sd-card |
500 | SerialPutString("Card is incompatible to 3.3V."); |
500 | SerialPutString("Card is incompatible to 3.3V."); |
501 | result = SD_ERROR_BAD_VOLTAGE_RANGE; |
501 | result = SD_ERROR_BAD_VOLTAGE_RANGE; |
502 | goto end; |
502 | goto end; |
503 | } |
503 | } |
504 | 504 | ||
505 | // Initialize the sd-card sending continously ACMD_SEND_OP_COND (only supported by SD cards) |
505 | // Initialize the sd-card sending continously ACMD_SEND_OP_COND (only supported by SD cards) |
506 | timeout = SetDelay(2000); // set timeout to 2000 ms (large cards tend to longer) |
506 | timeout = SetDelay(2000); // set timeout to 2000 ms (large cards tend to longer) |
507 | do |
507 | do |
508 | { |
508 | { |
509 | rsp[0] = SDC_SendACMDR1(ACMD_SEND_OP_COND, 0UL); |
509 | rsp[0] = SDC_SendACMDR1(ACMD_SEND_OP_COND, 0UL); |
510 | if(rsp[0] & R1_BAD_RESPONSE) |
510 | if(rsp[0] & R1_BAD_RESPONSE) |
511 | { |
511 | { |
512 | sprintf(text,"Bad Acmd41 R1=%02X.", rsp[0]); |
512 | sprintf(text,"Bad Acmd41 R1=%02X.", rsp[0]); |
513 | SerialPutString(text); |
513 | SerialPutString(text); |
514 | result = SD_ERROR_BAD_RESPONSE; |
514 | result = SD_ERROR_BAD_RESPONSE; |
515 | goto end; |
515 | goto end; |
516 | } |
516 | } |
517 | if(CheckDelay(timeout)) |
517 | if(CheckDelay(timeout)) |
518 | { |
518 | { |
519 | SerialPutString("Init timeout."); |
519 | SerialPutString("Init timeout."); |
520 | result = SD_ERROR_INITIALIZE; |
520 | result = SD_ERROR_INITIALIZE; |
521 | goto end; |
521 | goto end; |
522 | } |
522 | } |
523 | } while(rsp[0] & R1_IDLE_STATE); // loop until idle state |
523 | } while(rsp[0] & R1_IDLE_STATE); // loop until idle state |
524 | 524 | ||
525 | if(rsp[0] != R1_NO_ERR) |
525 | if(rsp[0] != R1_NO_ERR) |
526 | { |
526 | { |
527 | SerialPutString("Init error."); |
527 | SerialPutString("Init error."); |
528 | result = SD_ERROR_INITIALIZE; |
528 | result = SD_ERROR_INITIALIZE; |
529 | goto end; |
529 | goto end; |
530 | } |
530 | } |
531 | /* set block size to 512 bytes */ |
531 | /* set block size to 512 bytes */ |
532 | if(SDC_SendCMDR1(CMD_SET_BLOCKLEN, 512UL) != R1_NO_ERR) |
532 | if(SDC_SendCMDR1(CMD_SET_BLOCKLEN, 512UL) != R1_NO_ERR) |
533 | { |
533 | { |
534 | SerialPutString("Error setting block length to 512."); |
534 | SerialPutString("Error setting block length to 512."); |
535 | result = SD_ERROR_SET_BLOCKLEN; |
535 | result = SD_ERROR_SET_BLOCKLEN; |
536 | goto end; |
536 | goto end; |
537 | } |
537 | } |
538 | 538 | ||
539 | //SSC_Disable(); // set SD_CS high |
539 | //SSC_Disable(); // set SD_CS high |
540 | // here is the right place to inrease the SPI boud rate to maximum |
540 | // here is the right place to inrease the SPI boud rate to maximum |
541 | //SSC_Enable(); // set SD_CS high |
541 | //SSC_Enable(); // set SD_CS high |
542 | 542 | ||
543 | // read CID register |
543 | // read CID register |
544 | result = SDC_GetCID((u8 *)&SDCardInfo.CID); |
544 | result = SDC_GetCID((u8 *)&SDCardInfo.CID); |
545 | if(result != SD_SUCCESS) |
545 | if(result != SD_SUCCESS) |
546 | { |
546 | { |
547 | SerialPutString("Error reading CID.\r\n"); |
547 | SerialPutString("Error reading CID.\r\n"); |
548 | goto end; |
548 | goto end; |
549 | } |
549 | } |
550 | 550 | ||
551 | // read CSD register |
551 | // read CSD register |
552 | result = SDC_GetCSD((u8 *)&SDCardInfo.CSD); |
552 | result = SDC_GetCSD((u8 *)&SDCardInfo.CSD); |
553 | if(result != SD_SUCCESS) |
553 | if(result != SD_SUCCESS) |
554 | { |
554 | { |
555 | SerialPutString("Error reading CSD."); |
555 | SerialPutString("Error reading CSD."); |
556 | goto end; |
556 | goto end; |
557 | } |
557 | } |
558 | 558 | ||
559 | SerialPutString("ok\r\n"); |
559 | SerialPutString("ok\r\n"); |
560 | 560 | ||
561 | u8 c_size_mult, read_bl_len; |
561 | u8 c_size_mult, read_bl_len; |
562 | u32 c_size; |
562 | u32 c_size; |
563 | 563 | ||
564 | switch(SDCardInfo.CSD[0]>>6) // check CSD Version |
564 | switch(SDCardInfo.CSD[0]>>6) // check CSD Version |
565 | { |
565 | { |
566 | case 0x00: // if CSD is V1.0 structure (2GB limit) |
566 | case 0x00: // if CSD is V1.0 structure (2GB limit) |
567 | 567 | ||
568 | /* |
568 | /* |
569 | memory capacity = BLOCKNR * BLOCK_LEN |
569 | memory capacity = BLOCKNR * BLOCK_LEN |
570 | BLOCKNR = (C_SIZE+1) * MULT |
570 | BLOCKNR = (C_SIZE+1) * MULT |
571 | MULT = 2^(C_SIZE_MULT+2) |
571 | MULT = 2^(C_SIZE_MULT+2) |
572 | BLOCK_LEN = 2^READ_BL_LEN |
572 | BLOCK_LEN = 2^READ_BL_LEN |
573 | |
573 | |
574 | C_SIZE is 12 bits [73:62] in CSD register |
574 | C_SIZE is 12 bits [73:62] in CSD register |
575 | C_SIZE_MULT is 3 bits [49:47] in CSD register |
575 | C_SIZE_MULT is 3 bits [49:47] in CSD register |
576 | READ_BL_LEN is 4 bits [83:80] in CSD register |
576 | READ_BL_LEN is 4 bits [83:80] in CSD register |
577 | */ |
577 | */ |
578 | 578 | ||
579 | read_bl_len = (SDCardInfo.CSD[5] & 0x0F); //CSD[05] -> [87:80] |
579 | read_bl_len = (SDCardInfo.CSD[5] & 0x0F); //CSD[05] -> [87:80] |
580 | c_size = ((u32)(SDCardInfo.CSD[6] & 0x03))<<10; //CSD[06] -> [79:72] |
580 | c_size = ((u32)(SDCardInfo.CSD[6] & 0x03))<<10; //CSD[06] -> [79:72] |
581 | c_size |= ((u32)SDCardInfo.CSD[7])<<2; //CSD[07] -> [71:64] |
581 | c_size |= ((u32)SDCardInfo.CSD[7])<<2; //CSD[07] -> [71:64] |
582 | c_size |= (u32)(SDCardInfo.CSD[8]>>6); //CSD[08] -> [63:56] |
582 | c_size |= (u32)(SDCardInfo.CSD[8]>>6); //CSD[08] -> [63:56] |
583 | c_size_mult = (SDCardInfo.CSD[9] & 0x03)<<1; //CSD[09] -> [55:48] |
583 | c_size_mult = (SDCardInfo.CSD[9] & 0x03)<<1; //CSD[09] -> [55:48] |
584 | c_size_mult |=(SDCardInfo.CSD[10] & 0x80)>>7; //CSD[10] -> [47:40] |
584 | c_size_mult |=(SDCardInfo.CSD[10] & 0x80)>>7; //CSD[10] -> [47:40] |
585 | SDCardInfo.Capacity = (u32)(c_size+1)*(1L<<(c_size_mult+2))*(1L<<read_bl_len); |
585 | SDCardInfo.Capacity = (u32)(c_size+1)*(1L<<(c_size_mult+2))*(1L<<read_bl_len); |
586 | break; |
586 | break; |
587 | 587 | ||
588 | case 0x01: // if CSD is V2.0 structure (HC SD-Card > 2GB) |
588 | case 0x01: // if CSD is V2.0 structure (HC SD-Card > 2GB) |
589 | 589 | ||
590 | /* |
590 | /* |
591 | memory capacity = (C_SIZE+1) * 512K byte |
591 | memory capacity = (C_SIZE+1) * 512K byte |
592 | C_SIZE is 22 bits [69:48] in CSR register |
592 | C_SIZE is 22 bits [69:48] in CSR register |
593 | */ |
593 | */ |
594 | 594 | ||
595 | c_size = ((u32)(SDCardInfo.CSD[7] & 0x3F))<<16; //CSD[07] -> [71:64] |
595 | c_size = ((u32)(SDCardInfo.CSD[7] & 0x3F))<<16; //CSD[07] -> [71:64] |
596 | c_size |= ((u32)SDCardInfo.CSD[8])<<8; //CSD[08] -> [63:56] |
596 | c_size |= ((u32)SDCardInfo.CSD[8])<<8; //CSD[08] -> [63:56] |
597 | c_size |= (u32)SDCardInfo.CSD[9]; //CSD[09] -> [55:48]; |
597 | c_size |= (u32)SDCardInfo.CSD[9]; //CSD[09] -> [55:48]; |
598 | SDCardInfo.Capacity = (c_size + 1)* 512L * 1024L; |
598 | SDCardInfo.Capacity = (c_size + 1)* 512L * 1024L; |
599 | break; |
599 | break; |
600 | 600 | ||
601 | default: //unknown CSD Version |
601 | default: //unknown CSD Version |
602 | SDCardInfo.Capacity = 0; |
602 | SDCardInfo.Capacity = 0; |
603 | break; |
603 | break; |
604 | } |
604 | } |
605 | 605 | ||
606 | switch(SDCardInfo.Version) |
606 | switch(SDCardInfo.Version) |
607 | { |
607 | { |
608 | case VER_1X: |
608 | case VER_1X: |
609 | SerialPutString(" SD-CARD V1.x"); |
609 | SerialPutString(" SD-CARD V1.x"); |
610 | break; |
610 | break; |
611 | case VER_20: |
611 | case VER_20: |
612 | SerialPutString(" SD-CARD V2.0 or later"); |
612 | SerialPutString(" SD-CARD V2.0 or later"); |
613 | default: |
613 | default: |
614 | break; |
614 | break; |
615 | } |
615 | } |
616 | u16 mb_size = (u16)(SDCardInfo.Capacity/(1024L*1024L)); |
616 | u16 mb_size = (u16)(SDCardInfo.Capacity/(1024L*1024L)); |
617 | sprintf(text, "\r\n Capacity = %i MB", mb_size); |
617 | sprintf(text, "\r\n Capacity = %i MB", mb_size); |
618 | SerialPutString(text); |
618 | SerialPutString(text); |
619 | 619 | ||
620 | SDC_PrintCID((u8 *)&SDCardInfo.CID); |
620 | SDC_PrintCID((u8 *)&SDCardInfo.CID); |
621 | SDCardInfo.Valid = 1; |
621 | SDCardInfo.Valid = 1; |
622 | // jump point for error condition before |
622 | // jump point for error condition before |
623 | end: |
623 | end: |
624 | SSC_Disable(); |
624 | SSC_Disable(); |
625 | } |
625 | } |
626 | else |
626 | else |
627 | { |
627 | { |
628 | SSC_Deinit(); |
628 | SSC_Deinit(); |
629 | SDCardInfo.Valid = 0; |
629 | SDCardInfo.Valid = 0; |
630 | result = SD_ERROR_NOCARD; |
630 | result = SD_ERROR_NOCARD; |
631 | SerialPutString("No Card in Slot."); |
631 | SerialPutString("No Card in Slot."); |
632 | } |
632 | } |
633 | return(result); |
633 | return(result); |
634 | } |
634 | } |
635 | 635 | ||
636 | 636 | ||
637 | //________________________________________________________________________________________________________________________________________ |
637 | //________________________________________________________________________________________________________________________________________ |
638 | // Funtion: SDC_Deinit(void); |
638 | // Funtion: SDC_Deinit(void); |
639 | // |
639 | // |
640 | // Description: This function deinitialises the SDCard interface. |
640 | // Description: This function deinitialises the SDCard interface. |
641 | // |
641 | // |
642 | // |
642 | // |
643 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
643 | // Returnvalue: the function returns 0 if the initialisation was successfull otherwise the function returns an errorcode. |
644 | //________________________________________________________________________________________________________________________________________ |
644 | //________________________________________________________________________________________________________________________________________ |
645 | 645 | ||
646 | SD_Result_t SDC_Deinit(void) |
646 | SD_Result_t SDC_Deinit(void) |
647 | { |
647 | { |
648 | SerialPutString("\r\n SDC deinit..."); |
648 | SerialPutString("\r\n SDC deinit..."); |
649 | SSC_Deinit(); |
649 | SSC_Deinit(); |
650 | 650 | ||
651 | SDCardInfo.Valid = 0; |
651 | SDCardInfo.Valid = 0; |
652 | SDCardInfo.Capacity = 0; |
652 | SDCardInfo.Capacity = 0; |
653 | SDCardInfo.Version = VER_UNKNOWN; |
653 | SDCardInfo.Version = VER_UNKNOWN; |
654 | 654 | ||
655 | SerialPutString("ok"); |
655 | SerialPutString("ok"); |
656 | return(SD_SUCCESS); |
656 | return(SD_SUCCESS); |
657 | } |
657 | } |
658 | 658 | ||
659 | 659 | ||
660 | //________________________________________________________________________________________________________________________________________ |
660 | //________________________________________________________________________________________________________________________________________ |
661 | // Funtion: SDC_PutSector(void); |
661 | // Funtion: SDC_PutSector(void); |
662 | // |
662 | // |
663 | // Description: This function writes one sector of data to the SSC |
663 | // Description: This function writes one sector of data to the SSC |
664 | // |
664 | // |
665 | // |
665 | // |
666 | // Returnvalue: SD_Result_t |
666 | // Returnvalue: SD_Result_t |
667 | //________________________________________________________________________________________________________________________________________ |
667 | //________________________________________________________________________________________________________________________________________ |
668 | 668 | ||
669 | SD_Result_t SDC_PutSector(u32 addr, const u8 *Buffer) |
669 | SD_Result_t SDC_PutSector(u32 addr, const u8 *Buffer) |
670 | { |
670 | { |
671 | u8 rsp; |
671 | u8 rsp; |
672 | u16 a, crc16; |
672 | u16 a, crc16; |
673 | u16 timeout = 0; |
673 | u16 timeout = 0; |
674 | SD_Result_t result = SD_ERROR_UNKNOWN; |
674 | SD_Result_t result = SD_ERROR_UNKNOWN; |
675 | 675 | ||
676 | addr = addr << 9; // convert sectoradress to byteadress |
676 | addr = addr << 9; // convert sectoradress to byteadress |
677 | rsp = SDC_SendCMDR1(CMD_WRITE_SINGLE_BLOCK, addr); |
677 | rsp = SDC_SendCMDR1(CMD_WRITE_SINGLE_BLOCK, addr); |
678 | if (rsp != R1_NO_ERR) |
678 | if (rsp != R1_NO_ERR) |
679 | { |
679 | { |
680 | result = SD_ERROR_BAD_RESPONSE; |
680 | result = SD_ERROR_BAD_RESPONSE; |
681 | goto end; |
681 | goto end; |
682 | } |
682 | } |
683 | SSC_ClearRxFifo(); |
683 | SSC_ClearRxFifo(); |
684 | for (a=0;a<20;a++) // at least one byte |
684 | for (a=0;a<20;a++) // at least one byte |
685 | { |
685 | { |
686 | SSC_GetChar(); |
686 | SSC_GetChar(); |
687 | } |
687 | } |
688 | crc16 = CRC16(Buffer, 512); // calc checksum for data block |
688 | crc16 = CRC16(Buffer, 512); // calc checksum for data block |
689 | SSC_PutChar(DATA_START_TOKEN); // send data start of header to the SSC |
689 | SSC_PutChar(DATA_START_TOKEN); // send data start of header to the SSC |
690 | 690 | ||
691 | for (a=0;a<512;a++) // transmit one sector (normaly 512bytes) of data to the sdcard. |
691 | for (a=0;a<512;a++) // transmit one sector (normaly 512bytes) of data to the sdcard. |
692 | { |
692 | { |
693 | SSC_PutChar(Buffer[a]); |
693 | SSC_PutChar(Buffer[a]); |
694 | } |
694 | } |
695 | // write two bytes of crc16 to the sdcard |
695 | // write two bytes of crc16 to the sdcard |
696 | SSC_PutChar((u8)(crc16>>8)); // write high byte first |
696 | SSC_PutChar((u8)(crc16>>8)); // write high byte first |
697 | SSC_PutChar((u8)(0x00FF&crc16)); // lowbyte last |
697 | SSC_PutChar((u8)(0x00FF&crc16)); // lowbyte last |
698 | SSC_ClearRxFifo(); |
698 | SSC_ClearRxFifo(); |
699 | do // wait for data response token |
699 | do // wait for data response token |
700 | { |
700 | { |
701 | rsp = SSC_GetChar(); |
701 | rsp = SSC_GetChar(); |
702 | if(timeout++ > 500) |
702 | if(timeout++ > 500) |
703 | { |
703 | { |
704 | result = SD_ERROR_TIMEOUT; |
704 | result = SD_ERROR_TIMEOUT; |
705 | goto end; |
705 | goto end; |
706 | } |
706 | } |
707 | }while((rsp & 0x11) != 0x01 ); |
707 | }while((rsp & 0x11) != 0x01 ); |
708 | // analyse data response token |
708 | // analyse data response token |
709 | switch(rsp & DATA_RESPONSE_MASK) |
709 | switch(rsp & DATA_RESPONSE_MASK) |
710 | { |
710 | { |
711 | case DATA_RESPONSE_OK: |
711 | case DATA_RESPONSE_OK: |
712 | result = SD_SUCCESS; |
712 | result = SD_SUCCESS; |
713 | break; |
713 | break; |
714 | case DATA_RESPONSE_CRC_ERR: |
714 | case DATA_RESPONSE_CRC_ERR: |
715 | result = SD_ERROR_CRC_DATA; |
715 | result = SD_ERROR_CRC_DATA; |
716 | goto end; |
716 | goto end; |
717 | break; |
717 | break; |
718 | case DATA_RESPONSE_WRITE_ERR: |
718 | case DATA_RESPONSE_WRITE_ERR: |
719 | result = SD_ERROR_WRITE_DATA; |
719 | result = SD_ERROR_WRITE_DATA; |
720 | goto end; |
720 | goto end; |
721 | break; |
721 | break; |
722 | default: |
722 | default: |
723 | result = SD_ERROR_UNKNOWN; |
723 | result = SD_ERROR_UNKNOWN; |
724 | goto end; |
724 | goto end; |
725 | break; |
725 | break; |
726 | 726 | ||
727 | } |
727 | } |
728 | // wait 2 seconds until the sdcard is busy. |
728 | // wait 2 seconds until the sdcard is busy. |
729 | rsp = SDC_WaitForBusy(2000); |
729 | rsp = SDC_WaitForBusy(2000); |
730 | if(rsp != 0xFF) |
730 | if(rsp != 0xFF) |
731 | { |
731 | { |
732 | result = SD_ERROR_TIMEOUT; |
732 | result = SD_ERROR_TIMEOUT; |
733 | goto end; |
733 | goto end; |
734 | } |
734 | } |
735 | 735 | ||
736 | // check card status |
736 | // check card status |
737 | rsp = SDC_SendCMDR1(CMD_SEND_STATUS, 0); |
737 | rsp = SDC_SendCMDR1(CMD_SEND_STATUS, 0); |
738 | // first byte of R2 response is like R1 response |
738 | // first byte of R2 response is like R1 response |
739 | if(rsp != R1_NO_ERR) |
739 | if(rsp != R1_NO_ERR) |
740 | { |
740 | { |
741 | result = SD_ERROR_BAD_RESPONSE; |
741 | result = SD_ERROR_BAD_RESPONSE; |
742 | SSC_GetChar(); // read out 2nd byte |
742 | SSC_GetChar(); // read out 2nd byte |
743 | goto end; |
743 | goto end; |
744 | } |
744 | } |
745 | // 2nd byte of r2 response |
745 | // 2nd byte of r2 response |
746 | rsp = SSC_GetChar(); |
746 | rsp = SSC_GetChar(); |
747 | if(rsp != R2_NO_ERR) |
747 | if(rsp != R2_NO_ERR) |
748 | { |
748 | { |
749 | result = SD_ERROR_WRITE_DATA; |
749 | result = SD_ERROR_WRITE_DATA; |
750 | SSC_GetChar(); |
750 | SSC_GetChar(); |
751 | goto end; |
751 | goto end; |
752 | } |
752 | } |
753 | end: |
753 | end: |
754 | if(result != SD_SUCCESS) |
754 | if(result != SD_SUCCESS) |
755 | { |
755 | { |
756 | sprintf(text,"Error %02X writing data to sd card (R=%02X).\r\n", result, rsp); |
756 | sprintf(text,"Error %02X writing data to sd card (R=%02X).\r\n", result, rsp); |
757 | SerialPutString(text); |
757 | SerialPutString(text); |
758 | } |
758 | } |
759 | return(result); |
759 | return(result); |
760 | } |
760 | } |
761 | 761 | ||
762 | 762 | ||
763 | //________________________________________________________________________________________________________________________________________ |
763 | //________________________________________________________________________________________________________________________________________ |
764 | // Funtion: SDC_GetSector(u32 addr,u8 *Buffer); |
764 | // Funtion: SDC_GetSector(u32 addr,u8 *Buffer); |
765 | // |
765 | // |
766 | // Description: This function reads one sector of data from the SSC |
766 | // Description: This function reads one sector of data from the SSC |
767 | // |
767 | // |
768 | // |
768 | // |
769 | // Returnvalue: SD_Result_t |
769 | // Returnvalue: SD_Result_t |
770 | //________________________________________________________________________________________________________________________________________ |
770 | //________________________________________________________________________________________________________________________________________ |
771 | 771 | ||
772 | SD_Result_t SDC_GetSector(u32 addr,u8 *Buffer) |
772 | SD_Result_t SDC_GetSector(u32 addr,u8 *Buffer) |
773 | { |
773 | { |
774 | addr = addr << 9; // convert sectoradress to byteadress |
774 | addr = addr << 9; // convert sectoradress to byteadress |
775 | return SDC_GetData(CMD_READ_SINGLE_BLOCK, addr, Buffer, 512); |
775 | return SDC_GetData(CMD_READ_SINGLE_BLOCK, addr, Buffer, 512); |
776 | } |
776 | } |
777 | 777 | ||
778 | 778 | ||
779 | 779 | ||
780 | 780 |