int sdcard_read_block_sync (uint32_t sector) {
int err;
sdcard_data_t result;
result.fired = false;
result.error = TOCK_SUCCESS;
err = sdcard_set_callback(sdcard_cb, (void*) &result);
if (err < 0) return err;
err = sdcard_read_block(sector);
if (err < 0) return err;
// wait for callback
yield_for(&result.fired);
return result.error;
}
/**
* @brief Read data from the medium
* @param lun : logical unit number
* @param buf : Pointer to the buffer to save data
* @param blk_addr : address of 1st block to be read
* @param blk_len : nmber of blocks to be read
* @retval Status
*/
int8_t SDCARD_STORAGE_Read(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len) {
// TODO replace with call to sdcard_read_multi_blocks
for (int i = 0; i < blk_len; i++) {
if (!sdcard_read_block(buf + i * SDCARD_BLOCK_SIZE, blk_addr + i)) {
return -1;
}
}
/*
if (SD_ReadMultiBlocks(buf, blk_addr * 512, 512, blk_len) != 0) {
return -1;
}
#ifndef USE_STM3210C_EVAL
SD_WaitReadOperation();
while (SD_GetStatus() != SD_TRANSFER_OK);
#endif
*/
return 0;
}
