kopia lustrzana https://github.com/micropython/micropython
61 wiersze
1.4 KiB
C
61 wiersze
1.4 KiB
C
// TODO
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// make it work with DMA
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#include <stdio.h>
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//#include "stm32f4xx_sdio.h"
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#include "stm324x7i_eval_sdio_sd.h"
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#include "misc.h"
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#include "systick.h"
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#define BLOCK_SIZE 512 /* Block Size in Bytes */
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uint8_t aBuffer_Block_Rx[BLOCK_SIZE];
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void sdio_init(void) {
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SD_Error error = SD_Init();
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printf("Init: %x\n", error);
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uint8_t det = SD_Detect();
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printf("Detc: %x\n", det);
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if (!det) {
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printf("no card detected\n");
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SD_PowerOFF();
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SD_DeInit();
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return;
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}
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// read a block!
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error = SD_ReadBlock(aBuffer_Block_Rx, 512, BLOCK_SIZE);
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printf("ReadBlock: %d\n", error);
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/*
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// Check if the Transfer is finished
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error = SD_WaitReadOperation();
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printf("WaitReadOp: %d\n", error);
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*/
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uint32_t stc = sys_tick_counter;
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while (SD_GetStatus() != SD_TRANSFER_OK) {
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if (sys_tick_has_passed(stc, 2000)) {
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printf("timeout waiting for read to finish\n");
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break;
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}
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}
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printf("done!!\n");
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printf("%.16s", aBuffer_Block_Rx);
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/*
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snprintf((char*)aBuffer_Block_Rx, BLOCK_SIZE, "Here is some data back for you!\nBLOCK_SIZE=%d\n", BLOCK_SIZE);
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error = SD_WriteBlock(aBuffer_Block_Rx, 512, BLOCK_SIZE);
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printf("WriteBlock: %d\n", error);
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while (SD_GetStatus() != SD_TRANSFER_OK) {
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}
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printf("done writing!\n");
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*/
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SD_PowerOFF();
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SD_DeInit();
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}
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