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// TODO
// make it work with DMA
#include <stdio.h>
//#include "stm32f4xx_sdio.h"
#include "stm324x7i_eval_sdio_sd.h"
#include "misc.h"
#include "systick.h"
#include "mpconfig.h"
#include "qstr.h"
#include "obj.h"
#include "runtime.h"
#include "sdcard.h"
#if 0
#define BLOCK_SIZE 512 /* Block Size in Bytes */
uint8_t aBuffer_Block_Rx[BLOCK_SIZE];
void sdio_init(void) {
SD_Error error = SD_Init();
printf("Init: %x\n", error);
uint8_t det = SD_Detect();
printf("Detc: %x\n", det);
if (!det) {
printf("no card detected\n");
SD_PowerOFF();
SD_DeInit();
return;
}
// read a block!
error = SD_ReadBlock(aBuffer_Block_Rx, 512, BLOCK_SIZE);
printf("ReadBlock: %d\n", error);
/*
// Check if the Transfer is finished
error = SD_WaitReadOperation();
printf("WaitReadOp: %d\n", error);
*/
uint32_t stc = sys_tick_counter;
while (SD_GetStatus() != SD_TRANSFER_OK) {
if (sys_tick_has_passed(stc, 2000)) {
printf("timeout waiting for read to finish\n");
break;
}
}
printf("done!!\n");
printf("%.16s", aBuffer_Block_Rx);
/*
snprintf((char*)aBuffer_Block_Rx, BLOCK_SIZE, "Here is some data back for you!\nBLOCK_SIZE=%d\n", BLOCK_SIZE);
error = SD_WriteBlock(aBuffer_Block_Rx, 512, BLOCK_SIZE);
printf("WriteBlock: %d\n", error);
while (SD_GetStatus() != SD_TRANSFER_OK) {
}
printf("done writing!\n");
*/
SD_PowerOFF();
SD_DeInit();
}
#endif
void sdcard_init(void) {
// init the SD card detect pin
SD_LowLevel_Init_Detect();
}
bool sdcard_is_present(void) {
return SD_Detect() != 0;
}
bool sdcard_power_on(void) {
if (!SD_Detect()) {
return false;
}
SD_Error status = SD_Init();
if (status != SD_OK) {
SD_PowerOFF();
SD_DeInit();
return false;
}
return true;
}
void sdcard_power_off(void) {
SD_PowerOFF();
SD_DeInit();
}
uint64_t sdcard_get_capacity_in_bytes(void) {
SD_CardInfo SDCardInfo;
SD_GetCardInfo(&SDCardInfo);
return SDCardInfo.CardCapacity;
}
bool sdcard_read_block(uint8_t *dest, uint32_t block_num) {
// TODO return error if not powered on
SD_Error status;
status = SD_ReadBlock(dest, block_num * SDCARD_BLOCK_SIZE, SDCARD_BLOCK_SIZE);
if (status != SD_OK) {
return false;
}
#ifdef SD_DMA_MODE
// wait for DMA transfer to finish
status = SD_WaitReadOperation();
if (status != SD_OK) {
return false;
}
#endif
// wait for SD controller to finish
uint32_t stc = sys_tick_counter;
while (SD_GetStatus() != SD_TRANSFER_OK) {
if (sys_tick_has_passed(stc, 5000)) {
//printf("[ERROR] timeout waiting for SD card read to finish\n");
return false;
}
}
return true;
}
bool sdcard_write_block(const uint8_t *src, uint32_t block_num) {
// TODO return error if not powered on
SD_Error status;
status = SD_WriteBlock((uint8_t*)src, block_num * SDCARD_BLOCK_SIZE, SDCARD_BLOCK_SIZE);
if (status != SD_OK) {
return false;
}
#ifdef SD_DMA_MODE
// wait for DMA transfer to finish
status = SD_WaitReadOperation();
if (status != SD_OK) {
return false;
}
#endif
// wait for SD controller to finish
uint32_t stc = sys_tick_counter;
while (SD_GetStatus() != SD_TRANSFER_OK) {
if (sys_tick_has_passed(stc, 5000)) {
//printf("[ERROR] timeout waiting for SD card write to finish\n");
return false;
}
}
return true;
}
/******************************************************************************/
// Micro Python bindings
static mp_obj_t sd_present(mp_obj_t self) {
return MP_BOOL(sdcard_is_present());
}
static MP_DEFINE_CONST_FUN_OBJ_1(sd_present_obj, sd_present);
static mp_obj_t sd_power(mp_obj_t self, mp_obj_t state) {
bool result;
if (mp_obj_is_true(state)) {
result = sdcard_power_on();
} else {
sdcard_power_off();
result = true;
}
return MP_BOOL(result);
}
static MP_DEFINE_CONST_FUN_OBJ_2(sd_power_obj, sd_power);
static mp_obj_t sd_read(mp_obj_t self, mp_obj_t block_num) {
uint8_t *dest = m_new(uint8_t, SDCARD_BLOCK_SIZE);
if (!sdcard_read_block(dest, mp_obj_get_int(block_num))) {
m_free(dest, SDCARD_BLOCK_SIZE);
return mp_const_none;
}
return mp_obj_new_bytearray_by_ref(SDCARD_BLOCK_SIZE, dest);
}
static MP_DEFINE_CONST_FUN_OBJ_2(sd_read_obj, sd_read);
STATIC const mp_map_elem_t sdcard_locals_dict_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_present), (mp_obj_t)&sd_present_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_power), (mp_obj_t)&sd_power_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_read), (mp_obj_t)&sd_read_obj },
};
STATIC MP_DEFINE_CONST_DICT(sdcard_locals_dict, sdcard_locals_dict_table);
static const mp_obj_type_t sdcard_type = {
{ &mp_type_type },
.name = MP_QSTR_SDcard,
.locals_dict = (mp_obj_t)&sdcard_locals_dict,
};
const mp_obj_base_t pyb_sdcard_obj = {&sdcard_type};
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