MMC模式是标准的默认模式,具有MMC的全部特性。而SPI模式则是MMC存贮卡可选的第二种模式,这个模式是MMC协议的一个子集。 如下图为MMC在各个工作模式下的引脚定义。 SD 概念 SD卡,数字安全记忆卡(Secure Digital Memory Card),是用于移动设备的标准记忆卡。SD卡数据传送和物理规范由MMC发展而来,大小和MMC差不多。长...
sdcard_status = HAL_SD_GetCardState(&hsd1); if(sdcard_status == HAL_SD_CARD_TRANSFER) { printf("SD card init ok!\r\n\r\n"); //打印SD卡基本信息 printf("SD card information!\r\n"); printf("CardCapacity: %llu\r\n",((unsigned long long)hsd1.SdCard.BlockSize*hsd1.SdCard.Bl...
/* 读取未操作之前的数据 */printf("--- Read SD card block data Test ---\r\n");sdcard_status=HAL_SD_ReadBlocks(&hsd1,(uint8_t*)read_buf,0,1,0xffff);if(sdcard_status==0){printf("Read block data ok\r\n");for(i=0;i<512;i++){printf("0x%02x ",read_buf[i]);if((i+...
"Using SDMMC peripheral");sdmmc_host_t host=SDMMC_HOST_DEFAULT();// This initializes the slot without card detect (CD) and write protect (WP) signals.// Modify slot_config.gpio_cd and slot_config.gpio_wp if your board has these signals.sdmmc_slot_config_t slot_config=SDMMC_SLOT_...
1.使用sdmmc例程,引脚和默认配置相同,使用4线制,初始化时报了如下错误。我对了一下,连线没有错误,请问应该怎么解决呢? Code: Select all E (420) sdmmc_common: sdmmc_init_ocr: send_op_cond (1) returned 0x107 E (420) vfs_fat_sdmmc: sdmmc_card_init failed (0x107). E (420) example: ...
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card->card_speed = SD_TIMING_DEFAULT; } } }@@ -432,34 +458,52 @@ static int sdmmc_set_current_limit(struct sd_card *card) static int sdmmc_set_bus_speed(struct sd_card *card) { int ret; int timing = 0; uint8_t *status = card->card_buffer; enum sdhc_timing_mode timing;...
\n"); } } /** * @brief SD卡等待擦除完成函数 * @param 无 * @retval HAL_OK:擦除成功;HAL_ERROR:擦除失败 */ static HAL_StatusTypeDef Wait_SDCARD_Ready(void) { uint32_t loop = SD_TIMEOUT; while(loop > 0) { loop--; if(HAL_SD_GetCardState(&hsd1) == HAL_SD_CARD_TRANSFER...
/* mount SD-card */ if(f_mount(&SDFatFS, (TCHAR const*)SDPath, 0) != FR_OK){ Error_Handler(); } SDカードをマウントします. 失敗したらError_Handler()関数が呼ばれます. Error_Handler()関数はmain.cの最下部にあるのでデバッグの際は何かしら処理を記述しておくと役に立つかも...
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