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unleashed-firmware/firmware/targets/f7/fatfs/sd_spi_io.c
Michal Suchánek c0e0403b44
Fix SD card CID parsing (#2463) 
The recent SD rewrite dropped a couple of lines from the CID parsing
function resulting in zero manufacturing date displayed.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
2023-03-06 16:44:26 +09:00

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#include "sd_spi_io.h"
#include "sector_cache.h"
#include <furi.h>
#include <furi_hal.h>
#include <furi/core/core_defines.h>
// #define SD_SPI_DEBUG 1
#define TAG "SdSpi"
#ifdef SD_SPI_DEBUG
#define sd_spi_debug(...) FURI_LOG_I(TAG, __VA_ARGS__)
#else
#define sd_spi_debug(...)
#endif
#define SD_CMD_LENGTH 6
#define SD_DUMMY_BYTE 0xFF
#define SD_ANSWER_RETRY_COUNT 8
#define SD_IDLE_RETRY_COUNT 100
#define FLAG_SET(x, y) (((x) & (y)) == (y))
static bool sd_high_capacity = false;
typedef enum {
SdSpiDataResponceOK = 0x05,
SdSpiDataResponceCRCError = 0x0B,
SdSpiDataResponceWriteError = 0x0D,
SdSpiDataResponceOtherError = 0xFF,
} SdSpiDataResponce;
typedef struct {
uint8_t r1;
uint8_t r2;
uint8_t r3;
uint8_t r4;
uint8_t r5;
} SdSpiCmdAnswer;
typedef enum {
SdSpiCmdAnswerTypeR1,
SdSpiCmdAnswerTypeR1B,
SdSpiCmdAnswerTypeR2,
SdSpiCmdAnswerTypeR3,
SdSpiCmdAnswerTypeR4R5,
SdSpiCmdAnswerTypeR7,
} SdSpiCmdAnswerType;
/*
SdSpiCmd and SdSpiToken use non-standard enum value names convention,
because it is more convenient to look for documentation on a specific command.
For example, to find out what the SD_CMD23_SET_BLOCK_COUNT command does, you need to look for
SET_BLOCK_COUNT or CMD23 in the "Part 1 Physical Layer Simplified Specification".
Do not use that naming convention in other places.
*/
typedef enum {
SD_CMD0_GO_IDLE_STATE = 0,
SD_CMD1_SEND_OP_COND = 1,
SD_CMD8_SEND_IF_COND = 8,
SD_CMD9_SEND_CSD = 9,
SD_CMD10_SEND_CID = 10,
SD_CMD12_STOP_TRANSMISSION = 12,
SD_CMD13_SEND_STATUS = 13,
SD_CMD16_SET_BLOCKLEN = 16,
SD_CMD17_READ_SINGLE_BLOCK = 17,
SD_CMD18_READ_MULT_BLOCK = 18,
SD_CMD23_SET_BLOCK_COUNT = 23,
SD_CMD24_WRITE_SINGLE_BLOCK = 24,
SD_CMD25_WRITE_MULT_BLOCK = 25,
SD_CMD27_PROG_CSD = 27,
SD_CMD28_SET_WRITE_PROT = 28,
SD_CMD29_CLR_WRITE_PROT = 29,
SD_CMD30_SEND_WRITE_PROT = 30,
SD_CMD32_SD_ERASE_GRP_START = 32,
SD_CMD33_SD_ERASE_GRP_END = 33,
SD_CMD34_UNTAG_SECTOR = 34,
SD_CMD35_ERASE_GRP_START = 35,
SD_CMD36_ERASE_GRP_END = 36,
SD_CMD37_UNTAG_ERASE_GROUP = 37,
SD_CMD38_ERASE = 38,
SD_CMD41_SD_APP_OP_COND = 41,
SD_CMD55_APP_CMD = 55,
SD_CMD58_READ_OCR = 58,
} SdSpiCmd;
/** Data tokens */
typedef enum {
SD_TOKEN_START_DATA_SINGLE_BLOCK_READ = 0xFE,
SD_TOKEN_START_DATA_MULTIPLE_BLOCK_READ = 0xFE,
SD_TOKEN_START_DATA_SINGLE_BLOCK_WRITE = 0xFE,
SD_TOKEN_START_DATA_MULTIPLE_BLOCK_WRITE = 0xFC,
SD_TOKEN_STOP_DATA_MULTIPLE_BLOCK_WRITE = 0xFD,
} SdSpiToken;
/** R1 answer value */
typedef enum {
SdSpi_R1_NO_ERROR = 0x00,
SdSpi_R1_IN_IDLE_STATE = 0x01,
SdSpi_R1_ERASE_RESET = 0x02,
SdSpi_R1_ILLEGAL_COMMAND = 0x04,
SdSpi_R1_COM_CRC_ERROR = 0x08,
SdSpi_R1_ERASE_SEQUENCE_ERROR = 0x10,
SdSpi_R1_ADDRESS_ERROR = 0x20,
SdSpi_R1_PARAMETER_ERROR = 0x40,
} SdSpiR1;
/** R2 answer value */
typedef enum {
/* R2 answer value */
SdSpi_R2_NO_ERROR = 0x00,
SdSpi_R2_CARD_LOCKED = 0x01,
SdSpi_R2_LOCKUNLOCK_ERROR = 0x02,
SdSpi_R2_ERROR = 0x04,
SdSpi_R2_CC_ERROR = 0x08,
SdSpi_R2_CARD_ECC_FAILED = 0x10,
SdSpi_R2_WP_VIOLATION = 0x20,
SdSpi_R2_ERASE_PARAM = 0x40,
SdSpi_R2_OUTOFRANGE = 0x80,
} SdSpiR2;
static inline void sd_spi_select_card() {
furi_hal_gpio_write(furi_hal_sd_spi_handle->cs, false);
furi_delay_us(10); // Entry guard time for some SD cards
}
static inline void sd_spi_deselect_card() {
furi_delay_us(10); // Exit guard time for some SD cards
furi_hal_gpio_write(furi_hal_sd_spi_handle->cs, true);
}
static void sd_spi_bus_to_ground() {
furi_hal_gpio_init_ex(
furi_hal_sd_spi_handle->miso,
GpioModeOutputPushPull,
GpioPullNo,
GpioSpeedVeryHigh,
GpioAltFnUnused);
furi_hal_gpio_init_ex(
furi_hal_sd_spi_handle->mosi,
GpioModeOutputPushPull,
GpioPullNo,
GpioSpeedVeryHigh,
GpioAltFnUnused);
furi_hal_gpio_init_ex(
furi_hal_sd_spi_handle->sck,
GpioModeOutputPushPull,
GpioPullNo,
GpioSpeedVeryHigh,
GpioAltFnUnused);
sd_spi_select_card();
furi_hal_gpio_write(furi_hal_sd_spi_handle->miso, false);
furi_hal_gpio_write(furi_hal_sd_spi_handle->mosi, false);
furi_hal_gpio_write(furi_hal_sd_spi_handle->sck, false);
}
static void sd_spi_bus_rise_up() {
sd_spi_deselect_card();
furi_hal_gpio_init_ex(
furi_hal_sd_spi_handle->miso,
GpioModeAltFunctionPushPull,
GpioPullUp,
GpioSpeedVeryHigh,
GpioAltFn5SPI2);
furi_hal_gpio_init_ex(
furi_hal_sd_spi_handle->mosi,
GpioModeAltFunctionPushPull,
GpioPullUp,
GpioSpeedVeryHigh,
GpioAltFn5SPI2);
furi_hal_gpio_init_ex(
furi_hal_sd_spi_handle->sck,
GpioModeAltFunctionPushPull,
GpioPullUp,
GpioSpeedVeryHigh,
GpioAltFn5SPI2);
}
static inline uint8_t sd_spi_read_byte(void) {
uint8_t responce;
furi_check(furi_hal_spi_bus_trx(furi_hal_sd_spi_handle, NULL, &responce, 1, SD_TIMEOUT_MS));
return responce;
}
static inline void sd_spi_write_byte(uint8_t data) {
furi_check(furi_hal_spi_bus_trx(furi_hal_sd_spi_handle, &data, NULL, 1, SD_TIMEOUT_MS));
}
static inline uint8_t sd_spi_write_and_read_byte(uint8_t data) {
uint8_t responce;
furi_check(furi_hal_spi_bus_trx(furi_hal_sd_spi_handle, &data, &responce, 1, SD_TIMEOUT_MS));
return responce;
}
static inline void sd_spi_write_bytes(uint8_t* data, uint32_t size) {
furi_check(furi_hal_spi_bus_trx(furi_hal_sd_spi_handle, data, NULL, size, SD_TIMEOUT_MS));
}
static inline void sd_spi_read_bytes(uint8_t* data, uint32_t size) {
furi_check(furi_hal_spi_bus_trx(furi_hal_sd_spi_handle, NULL, data, size, SD_TIMEOUT_MS));
}
static inline void sd_spi_write_bytes_dma(uint8_t* data, uint32_t size) {
uint32_t timeout_mul = (size / 512) + 1;
furi_check(furi_hal_spi_bus_trx_dma(
furi_hal_sd_spi_handle, data, NULL, size, SD_TIMEOUT_MS * timeout_mul));
}
static inline void sd_spi_read_bytes_dma(uint8_t* data, uint32_t size) {
uint32_t timeout_mul = (size / 512) + 1;
furi_check(furi_hal_spi_bus_trx_dma(
furi_hal_sd_spi_handle, NULL, data, size, SD_TIMEOUT_MS * timeout_mul));
}
static uint8_t sd_spi_wait_for_data_and_read(void) {
uint8_t retry_count = SD_ANSWER_RETRY_COUNT;
uint8_t responce;
// Wait until we get a valid data
do {
responce = sd_spi_read_byte();
retry_count--;
} while((responce == SD_DUMMY_BYTE) && retry_count);
return responce;
}
static SdSpiStatus sd_spi_wait_for_data(uint8_t data, uint32_t timeout_ms) {
FuriHalCortexTimer timer = furi_hal_cortex_timer_get(timeout_ms * 1000);
uint8_t byte;
do {
byte = sd_spi_read_byte();
if(furi_hal_cortex_timer_is_expired(timer)) {
return SdSpiStatusTimeout;
}
} while((byte != data));
return SdSpiStatusOK;
}
static inline void sd_spi_deselect_card_and_purge() {
sd_spi_deselect_card();
sd_spi_read_byte();
}
static inline void sd_spi_purge_crc() {
sd_spi_read_byte();
sd_spi_read_byte();
}
static SdSpiCmdAnswer
sd_spi_send_cmd(SdSpiCmd cmd, uint32_t arg, uint8_t crc, SdSpiCmdAnswerType answer_type) {
uint8_t frame[SD_CMD_LENGTH];
SdSpiCmdAnswer cmd_answer = {
.r1 = SD_DUMMY_BYTE,
.r2 = SD_DUMMY_BYTE,
.r3 = SD_DUMMY_BYTE,
.r4 = SD_DUMMY_BYTE,
.r5 = SD_DUMMY_BYTE,
};
// R1 Length = NCS(0)+ 6 Bytes command + NCR(min1 max8) + 1 Bytes answer + NEC(0) = 15bytes
// R1b identical to R1 + Busy information
// R2 Length = NCS(0)+ 6 Bytes command + NCR(min1 max8) + 2 Bytes answer + NEC(0) = 16bytes
frame[0] = ((uint8_t)cmd | 0x40);
frame[1] = (uint8_t)(arg >> 24);
frame[2] = (uint8_t)(arg >> 16);
frame[3] = (uint8_t)(arg >> 8);
frame[4] = (uint8_t)(arg);
frame[5] = (crc | 0x01);
sd_spi_select_card();
sd_spi_write_bytes(frame, sizeof(frame));
switch(answer_type) {
case SdSpiCmdAnswerTypeR1:
cmd_answer.r1 = sd_spi_wait_for_data_and_read();
break;
case SdSpiCmdAnswerTypeR1B:
// TODO: can be wrong, at least for SD_CMD12_STOP_TRANSMISSION you need to purge one byte before reading R1
cmd_answer.r1 = sd_spi_wait_for_data_and_read();
// In general this shenenigans seems suspicious, please double check SD specs if you are using SdSpiCmdAnswerTypeR1B
// reassert card
sd_spi_deselect_card();
furi_delay_us(1000);
sd_spi_deselect_card();
// and wait for it to be ready
while(sd_spi_read_byte() != 0xFF) {
};
break;
case SdSpiCmdAnswerTypeR2:
cmd_answer.r1 = sd_spi_wait_for_data_and_read();
cmd_answer.r2 = sd_spi_read_byte();
break;
case SdSpiCmdAnswerTypeR3:
case SdSpiCmdAnswerTypeR7:
cmd_answer.r1 = sd_spi_wait_for_data_and_read();
cmd_answer.r2 = sd_spi_read_byte();
cmd_answer.r3 = sd_spi_read_byte();
cmd_answer.r4 = sd_spi_read_byte();
cmd_answer.r5 = sd_spi_read_byte();
break;
default:
break;
}
return cmd_answer;
}
static SdSpiDataResponce sd_spi_get_data_response(uint32_t timeout_ms) {
SdSpiDataResponce responce = sd_spi_read_byte();
// read busy response byte
sd_spi_read_byte();
switch(responce & 0x1F) {
case SdSpiDataResponceOK:
// TODO: check timings
sd_spi_deselect_card();
sd_spi_select_card();
// wait for 0xFF
if(sd_spi_wait_for_data(0xFF, timeout_ms) == SdSpiStatusOK) {
return SdSpiDataResponceOK;
} else {
return SdSpiDataResponceOtherError;
}
case SdSpiDataResponceCRCError:
return SdSpiDataResponceCRCError;
case SdSpiDataResponceWriteError:
return SdSpiDataResponceWriteError;
default:
return SdSpiDataResponceOtherError;
}
}
static SdSpiStatus sd_spi_init_spi_mode_v1(void) {
SdSpiCmdAnswer response;
uint8_t retry_count = 0;
sd_spi_debug("Init SD card in SPI mode v1");
do {
retry_count++;
// CMD55 (APP_CMD) before any ACMD command: R1 response (0x00: no errors)
sd_spi_send_cmd(SD_CMD55_APP_CMD, 0, 0xFF, SdSpiCmdAnswerTypeR1);
sd_spi_deselect_card_and_purge();
// ACMD41 (SD_APP_OP_COND) to initialize SDHC or SDXC cards: R1 response (0x00: no errors)
response = sd_spi_send_cmd(SD_CMD41_SD_APP_OP_COND, 0, 0xFF, SdSpiCmdAnswerTypeR1);
sd_spi_deselect_card_and_purge();
if(retry_count >= SD_IDLE_RETRY_COUNT) {
return SdSpiStatusError;
}
} while(response.r1 == SdSpi_R1_IN_IDLE_STATE);
sd_spi_debug("Init SD card in SPI mode v1 done");
return SdSpiStatusOK;
}
static SdSpiStatus sd_spi_init_spi_mode_v2(void) {
SdSpiCmdAnswer response;
uint8_t retry_count = 0;
sd_spi_debug("Init SD card in SPI mode v2");
do {
retry_count++;
// CMD55 (APP_CMD) before any ACMD command: R1 response (0x00: no errors)
sd_spi_send_cmd(SD_CMD55_APP_CMD, 0, 0xFF, SdSpiCmdAnswerTypeR1);
sd_spi_deselect_card_and_purge();
// ACMD41 (APP_OP_COND) to initialize SDHC or SDXC cards: R1 response (0x00: no errors)
response =
sd_spi_send_cmd(SD_CMD41_SD_APP_OP_COND, 0x40000000, 0xFF, SdSpiCmdAnswerTypeR1);
sd_spi_deselect_card_and_purge();
if(retry_count >= SD_IDLE_RETRY_COUNT) {
sd_spi_debug("ACMD41 failed");
return SdSpiStatusError;
}
} while(response.r1 == SdSpi_R1_IN_IDLE_STATE);
if(FLAG_SET(response.r1, SdSpi_R1_ILLEGAL_COMMAND)) {
sd_spi_debug("ACMD41 is illegal command");
retry_count = 0;
do {
retry_count++;
// CMD55 (APP_CMD) before any ACMD command: R1 response (0x00: no errors)
response = sd_spi_send_cmd(SD_CMD55_APP_CMD, 0, 0xFF, SdSpiCmdAnswerTypeR1);
sd_spi_deselect_card_and_purge();
if(response.r1 != SdSpi_R1_IN_IDLE_STATE) {
sd_spi_debug("CMD55 failed");
return SdSpiStatusError;
}
// ACMD41 (SD_APP_OP_COND) to initialize SDHC or SDXC cards: R1 response (0x00: no errors)
response = sd_spi_send_cmd(SD_CMD41_SD_APP_OP_COND, 0, 0xFF, SdSpiCmdAnswerTypeR1);
sd_spi_deselect_card_and_purge();
if(retry_count >= SD_IDLE_RETRY_COUNT) {
sd_spi_debug("ACMD41 failed");
return SdSpiStatusError;
}
} while(response.r1 == SdSpi_R1_IN_IDLE_STATE);
}
sd_spi_debug("Init SD card in SPI mode v2 done");
return SdSpiStatusOK;
}
static SdSpiStatus sd_spi_init_spi_mode(void) {
SdSpiCmdAnswer response;
uint8_t retry_count;
// CMD0 (GO_IDLE_STATE) to put SD in SPI mode and
// wait for In Idle State Response (R1 Format) equal to 0x01
retry_count = 0;
do {
retry_count++;
response = sd_spi_send_cmd(SD_CMD0_GO_IDLE_STATE, 0, 0x95, SdSpiCmdAnswerTypeR1);
sd_spi_deselect_card_and_purge();
if(retry_count >= SD_IDLE_RETRY_COUNT) {
sd_spi_debug("CMD0 failed");
return SdSpiStatusError;
}
} while(response.r1 != SdSpi_R1_IN_IDLE_STATE);
// CMD8 (SEND_IF_COND) to check the power supply status
// and wait until response (R7 Format) equal to 0xAA and
response = sd_spi_send_cmd(SD_CMD8_SEND_IF_COND, 0x1AA, 0x87, SdSpiCmdAnswerTypeR7);
sd_spi_deselect_card_and_purge();
if(FLAG_SET(response.r1, SdSpi_R1_ILLEGAL_COMMAND)) {
if(sd_spi_init_spi_mode_v1() != SdSpiStatusOK) {
sd_spi_debug("Init mode v1 failed");
return SdSpiStatusError;
}
sd_high_capacity = 0;
} else if(response.r1 == SdSpi_R1_IN_IDLE_STATE) {
if(sd_spi_init_spi_mode_v2() != SdSpiStatusOK) {
sd_spi_debug("Init mode v2 failed");
return SdSpiStatusError;
}
// CMD58 (READ_OCR) to initialize SDHC or SDXC cards: R3 response
response = sd_spi_send_cmd(SD_CMD58_READ_OCR, 0, 0xFF, SdSpiCmdAnswerTypeR3);
sd_spi_deselect_card_and_purge();
if(response.r1 != SdSpi_R1_NO_ERROR) {
sd_spi_debug("CMD58 failed");
return SdSpiStatusError;
}
sd_high_capacity = (response.r2 & 0x40) >> 6;
} else {
return SdSpiStatusError;
}
sd_spi_debug("SD card is %s", sd_high_capacity ? "SDHC or SDXC" : "SDSC");
return SdSpiStatusOK;
}
static SdSpiStatus sd_spi_get_csd(SD_CSD* csd) {
uint16_t counter = 0;
uint8_t csd_data[16];
SdSpiStatus ret = SdSpiStatusError;
SdSpiCmdAnswer response;
// CMD9 (SEND_CSD): R1 format (0x00 is no errors)
response = sd_spi_send_cmd(SD_CMD9_SEND_CSD, 0, 0xFF, SdSpiCmdAnswerTypeR1);
if(response.r1 == SdSpi_R1_NO_ERROR) {
if(sd_spi_wait_for_data(SD_TOKEN_START_DATA_SINGLE_BLOCK_READ, SD_TIMEOUT_MS) ==
SdSpiStatusOK) {
// read CSD data
for(counter = 0; counter < 16; counter++) {
csd_data[counter] = sd_spi_read_byte();
}
sd_spi_purge_crc();
/*************************************************************************
CSD header decoding
*************************************************************************/
csd->CSDStruct = (csd_data[0] & 0xC0) >> 6;
csd->Reserved1 = csd_data[0] & 0x3F;
csd->TAAC = csd_data[1];
csd->NSAC = csd_data[2];
csd->MaxBusClkFrec = csd_data[3];
csd->CardComdClasses = (csd_data[4] << 4) | ((csd_data[5] & 0xF0) >> 4);
csd->RdBlockLen = csd_data[5] & 0x0F;
csd->PartBlockRead = (csd_data[6] & 0x80) >> 7;
csd->WrBlockMisalign = (csd_data[6] & 0x40) >> 6;
csd->RdBlockMisalign = (csd_data[6] & 0x20) >> 5;
csd->DSRImpl = (csd_data[6] & 0x10) >> 4;
/*************************************************************************
CSD v1/v2 decoding
*************************************************************************/
if(sd_high_capacity == 0) {
csd->version.v1.Reserved1 = ((csd_data[6] & 0x0C) >> 2);
csd->version.v1.DeviceSize = ((csd_data[6] & 0x03) << 10) | (csd_data[7] << 2) |
((csd_data[8] & 0xC0) >> 6);
csd->version.v1.MaxRdCurrentVDDMin = (csd_data[8] & 0x38) >> 3;
csd->version.v1.MaxRdCurrentVDDMax = (csd_data[8] & 0x07);
csd->version.v1.MaxWrCurrentVDDMin = (csd_data[9] & 0xE0) >> 5;
csd->version.v1.MaxWrCurrentVDDMax = (csd_data[9] & 0x1C) >> 2;
csd->version.v1.DeviceSizeMul = ((csd_data[9] & 0x03) << 1) |
((csd_data[10] & 0x80) >> 7);
} else {
csd->version.v2.Reserved1 = ((csd_data[6] & 0x0F) << 2) |
((csd_data[7] & 0xC0) >> 6);
csd->version.v2.DeviceSize = ((csd_data[7] & 0x3F) << 16) | (csd_data[8] << 8) |
csd_data[9];
csd->version.v2.Reserved2 = ((csd_data[10] & 0x80) >> 8);
}
csd->EraseSingleBlockEnable = (csd_data[10] & 0x40) >> 6;
csd->EraseSectorSize = ((csd_data[10] & 0x3F) << 1) | ((csd_data[11] & 0x80) >> 7);
csd->WrProtectGrSize = (csd_data[11] & 0x7F);
csd->WrProtectGrEnable = (csd_data[12] & 0x80) >> 7;
csd->Reserved2 = (csd_data[12] & 0x60) >> 5;
csd->WrSpeedFact = (csd_data[12] & 0x1C) >> 2;
csd->MaxWrBlockLen = ((csd_data[12] & 0x03) << 2) | ((csd_data[13] & 0xC0) >> 6);
csd->WriteBlockPartial = (csd_data[13] & 0x20) >> 5;
csd->Reserved3 = (csd_data[13] & 0x1F);
csd->FileFormatGrouop = (csd_data[14] & 0x80) >> 7;
csd->CopyFlag = (csd_data[14] & 0x40) >> 6;
csd->PermWrProtect = (csd_data[14] & 0x20) >> 5;
csd->TempWrProtect = (csd_data[14] & 0x10) >> 4;
csd->FileFormat = (csd_data[14] & 0x0C) >> 2;
csd->Reserved4 = (csd_data[14] & 0x03);
csd->crc = (csd_data[15] & 0xFE) >> 1;
csd->Reserved5 = (csd_data[15] & 0x01);
ret = SdSpiStatusOK;
}
}
sd_spi_deselect_card_and_purge();
return ret;
}
static SdSpiStatus sd_spi_get_cid(SD_CID* Cid) {
uint16_t counter = 0;
uint8_t cid_data[16];
SdSpiStatus ret = SdSpiStatusError;
SdSpiCmdAnswer response;
// CMD10 (SEND_CID): R1 format (0x00 is no errors)
response = sd_spi_send_cmd(SD_CMD10_SEND_CID, 0, 0xFF, SdSpiCmdAnswerTypeR1);
if(response.r1 == SdSpi_R1_NO_ERROR) {
if(sd_spi_wait_for_data(SD_TOKEN_START_DATA_SINGLE_BLOCK_READ, SD_TIMEOUT_MS) ==
SdSpiStatusOK) {
// read CID data
for(counter = 0; counter < 16; counter++) {
cid_data[counter] = sd_spi_read_byte();
}
sd_spi_purge_crc();
Cid->ManufacturerID = cid_data[0];
memcpy(Cid->OEM_AppliID, cid_data + 1, 2);
memcpy(Cid->ProdName, cid_data + 3, 5);
Cid->ProdRev = cid_data[8];
Cid->ProdSN = cid_data[9] << 24;
Cid->ProdSN |= cid_data[10] << 16;
Cid->ProdSN |= cid_data[11] << 8;
Cid->ProdSN |= cid_data[12];
Cid->Reserved1 = (cid_data[13] & 0xF0) >> 4;
Cid->ManufactYear = (cid_data[13] & 0x0F) << 4;
Cid->ManufactYear |= (cid_data[14] & 0xF0) >> 4;
Cid->ManufactMonth = (cid_data[14] & 0x0F);
Cid->CID_CRC = (cid_data[15] & 0xFE) >> 1;
Cid->Reserved2 = 1;
ret = SdSpiStatusOK;
}
}
sd_spi_deselect_card_and_purge();
return ret;
}
static SdSpiStatus
sd_spi_cmd_read_blocks(uint32_t* data, uint32_t address, uint32_t blocks, uint32_t timeout_ms) {
uint32_t block_address = address;
uint32_t offset = 0;
// CMD16 (SET_BLOCKLEN): R1 response (0x00: no errors)
SdSpiCmdAnswer response =
sd_spi_send_cmd(SD_CMD16_SET_BLOCKLEN, SD_BLOCK_SIZE, 0xFF, SdSpiCmdAnswerTypeR1);
sd_spi_deselect_card_and_purge();
if(response.r1 != SdSpi_R1_NO_ERROR) {
return SdSpiStatusError;
}
if(!sd_high_capacity) {
block_address = address * SD_BLOCK_SIZE;
}
while(blocks--) {
// CMD17 (READ_SINGLE_BLOCK): R1 response (0x00: no errors)
response =
sd_spi_send_cmd(SD_CMD17_READ_SINGLE_BLOCK, block_address, 0xFF, SdSpiCmdAnswerTypeR1);
if(response.r1 != SdSpi_R1_NO_ERROR) {
sd_spi_deselect_card_and_purge();
return SdSpiStatusError;
}
// Wait for the data start token
if(sd_spi_wait_for_data(SD_TOKEN_START_DATA_SINGLE_BLOCK_READ, timeout_ms) ==
SdSpiStatusOK) {
// Read the data block
sd_spi_read_bytes_dma((uint8_t*)data + offset, SD_BLOCK_SIZE);
sd_spi_purge_crc();
// increase offset
offset += SD_BLOCK_SIZE;
// increase block address
if(sd_high_capacity) {
block_address += 1;
} else {
block_address += SD_BLOCK_SIZE;
}
} else {
sd_spi_deselect_card_and_purge();
return SdSpiStatusError;
}
sd_spi_deselect_card_and_purge();
}
return SdSpiStatusOK;
}
static SdSpiStatus sd_spi_cmd_write_blocks(
uint32_t* data,
uint32_t address,
uint32_t blocks,
uint32_t timeout_ms) {
uint32_t block_address = address;
uint32_t offset = 0;
// CMD16 (SET_BLOCKLEN): R1 response (0x00: no errors)
SdSpiCmdAnswer response =
sd_spi_send_cmd(SD_CMD16_SET_BLOCKLEN, SD_BLOCK_SIZE, 0xFF, SdSpiCmdAnswerTypeR1);
sd_spi_deselect_card_and_purge();
if(response.r1 != SdSpi_R1_NO_ERROR) {
return SdSpiStatusError;
}
if(!sd_high_capacity) {
block_address = address * SD_BLOCK_SIZE;
}
while(blocks--) {
// CMD24 (WRITE_SINGLE_BLOCK): R1 response (0x00: no errors)
response = sd_spi_send_cmd(
SD_CMD24_WRITE_SINGLE_BLOCK, block_address, 0xFF, SdSpiCmdAnswerTypeR1);
if(response.r1 != SdSpi_R1_NO_ERROR) {
sd_spi_deselect_card_and_purge();
return SdSpiStatusError;
}
// Send dummy byte for NWR timing : one byte between CMD_WRITE and TOKEN
// TODO: check bytes count
sd_spi_write_byte(SD_DUMMY_BYTE);
sd_spi_write_byte(SD_DUMMY_BYTE);
// Send the data start token
sd_spi_write_byte(SD_TOKEN_START_DATA_SINGLE_BLOCK_WRITE);
sd_spi_write_bytes_dma((uint8_t*)data + offset, SD_BLOCK_SIZE);
sd_spi_purge_crc();
// Read data response
SdSpiDataResponce data_responce = sd_spi_get_data_response(timeout_ms);
sd_spi_deselect_card_and_purge();
if(data_responce != SdSpiDataResponceOK) {
return SdSpiStatusError;
}
// increase offset
offset += SD_BLOCK_SIZE;
// increase block address
if(sd_high_capacity) {
block_address += 1;
} else {
block_address += SD_BLOCK_SIZE;
}
}
return SdSpiStatusOK;
}
uint8_t sd_max_mount_retry_count() {
return 10;
}
SdSpiStatus sd_init(bool power_reset) {
// Slow speed init
furi_hal_spi_acquire(&furi_hal_spi_bus_handle_sd_slow);
furi_hal_sd_spi_handle = &furi_hal_spi_bus_handle_sd_slow;
// We reset card in spi_lock context, so it is safe to disturb spi bus
if(power_reset) {
sd_spi_debug("Power reset");
// disable power and set low on all bus pins
furi_hal_power_disable_external_3_3v();
sd_spi_bus_to_ground();
hal_sd_detect_set_low();
furi_delay_ms(250);
// reinit bus and enable power
sd_spi_bus_rise_up();
hal_sd_detect_init();
furi_hal_power_enable_external_3_3v();
furi_delay_ms(100);
}
SdSpiStatus status = SdSpiStatusError;
// Send 80 dummy clocks with CS high
sd_spi_deselect_card();
for(uint8_t i = 0; i < 80; i++) {
sd_spi_write_byte(SD_DUMMY_BYTE);
}
for(uint8_t i = 0; i < 128; i++) {
status = sd_spi_init_spi_mode();
if(status == SdSpiStatusOK) {
// SD initialized and init to SPI mode properly
sd_spi_debug("SD init OK after %d retries", i);
break;
}
}
furi_hal_sd_spi_handle = NULL;
furi_hal_spi_release(&furi_hal_spi_bus_handle_sd_slow);
// Init sector cache
sector_cache_init();
return status;
}
SdSpiStatus sd_get_card_state(void) {
SdSpiCmdAnswer response;
// Send CMD13 (SEND_STATUS) to get SD status
response = sd_spi_send_cmd(SD_CMD13_SEND_STATUS, 0, 0xFF, SdSpiCmdAnswerTypeR2);
sd_spi_deselect_card_and_purge();
// Return status OK if response is valid
if((response.r1 == SdSpi_R1_NO_ERROR) && (response.r2 == SdSpi_R2_NO_ERROR)) {
return SdSpiStatusOK;
}
return SdSpiStatusError;
}
SdSpiStatus sd_get_card_info(SD_CardInfo* card_info) {
SdSpiStatus status;
status = sd_spi_get_csd(&(card_info->Csd));
if(status != SdSpiStatusOK) {
return status;
}
status = sd_spi_get_cid(&(card_info->Cid));
if(status != SdSpiStatusOK) {
return status;
}
if(sd_high_capacity == 1) {
card_info->LogBlockSize = 512;
card_info->CardBlockSize = 512;
card_info->CardCapacity = ((uint64_t)card_info->Csd.version.v2.DeviceSize + 1UL) * 1024UL *
(uint64_t)card_info->LogBlockSize;
card_info->LogBlockNbr = (card_info->CardCapacity) / (card_info->LogBlockSize);
} else {
card_info->CardCapacity = (card_info->Csd.version.v1.DeviceSize + 1);
card_info->CardCapacity *= (1UL << (card_info->Csd.version.v1.DeviceSizeMul + 2));
card_info->LogBlockSize = 512;
card_info->CardBlockSize = 1UL << (card_info->Csd.RdBlockLen);
card_info->CardCapacity *= card_info->CardBlockSize;
card_info->LogBlockNbr = (card_info->CardCapacity) / (card_info->LogBlockSize);
}
return status;
}
SdSpiStatus
sd_read_blocks(uint32_t* data, uint32_t address, uint32_t blocks, uint32_t timeout_ms) {
SdSpiStatus status = sd_spi_cmd_read_blocks(data, address, blocks, timeout_ms);
return status;
}
SdSpiStatus
sd_write_blocks(uint32_t* data, uint32_t address, uint32_t blocks, uint32_t timeout_ms) {
SdSpiStatus status = sd_spi_cmd_write_blocks(data, address, blocks, timeout_ms);
return status;
}
SdSpiStatus sd_get_cid(SD_CID* cid) {
SdSpiStatus status;
furi_hal_spi_acquire(&furi_hal_spi_bus_handle_sd_fast);
furi_hal_sd_spi_handle = &furi_hal_spi_bus_handle_sd_fast;
memset(cid, 0, sizeof(SD_CID));
status = sd_spi_get_cid(cid);
furi_hal_sd_spi_handle = NULL;
furi_hal_spi_release(&furi_hal_spi_bus_handle_sd_fast);
return status;
}
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