sdmmc_card_t *card; const char mount_point[] = MOUNT_POINT; ESP_LOGI(TAG, "Initializing SD card"); // Use settings defined above to initialize SD card and mount FAT filesystem. // Note: esp_vfs_fat_sdmmc/sdspi_mount is all-in-one convenience functions. // Please check its source...
Type:SDSC Speed:20MHz Size:121MB I(1436)example:Opening file/sdcard/hello.txt I(1446)example:File written I(1450)example:Renaming file/sdcard/hello.txtto/sdcard/foo.txt I(1452)example:Reading file/sdcard/foo.txt I(1456)example:Read from file:'Hello SD !' I(1556)example:list:/,open...
sdmmc_card_t *card; const char mount_point[] = MOUNT_POINT; ESP_LOGI(TAG, "Initializing SD card"); // Use settings defined above to initialize SD card and mount FAT filesystem. // Note: esp_vfs_fat_sdmmc/sdspi_mount is all-in-one convenience functions. // Please check its source...
Speed: 20 MHz Size: 121MB I (1464) example: Opening file /sdcard/hello.txt I (1474) example: File written I (1530) example: Renaming file /sdcard/hello.txt to /sdcard/foo.txt I (1532) example: Reading file /sdcard/foo.txt I (1533) example: Read from file: 'Hello SD !' I...
Hello, I am testing my own esp32-s3 pcb , it has a 4-line sd card slot. The esp32-s3 datasheet indicates that esp32-s3 sdmmc frequency is up to 40MHz, so the theoretical max sdmmc write speed for 4-line mode might be 160Mbps? But I wrote a program to test the writing speed...
bool sdcard_retry(void){ if(!card) return mount_sdcard(); return true;} bool mount_sdcard(){ printf("...Try mount.\n"); sdmmc_host_t host = SDMMC_HOST_DEFAULT(); host.max_freq_khz = SDMMC_FREQ_HIGHSPEED; sdmmc_slot_config_t slot_config = SDMMC_SLOT_...
2.挂载SD卡 bool sdcard_retry(void) { if(!card) return mount_sdcard(); return true; } bool mount_sdcard() { printf("...Try mount.\n"); sdmmc_host_t host = SDMMC_HOST_DEFAULT(); host.max_freq_khz = SDMMC_FREQ_HIGHSPEED; sdmmc_slot_config...
2.挂载 SD 卡 bool sdcard_retry(void) { if(!card) return mount_sdcard(); return true; } bool mount_sdcard() { printf("...Try mount.\n"); sdmmc_host_t host = SDMMC_HOST_DEFAULT(); host.max_freq_khz = SDMMC_FREQ_HIGHSPEED; sdmmc_slot_config...
评估板做了个micro SD卡的接口,方便直接插到带卡槽的开发板上进行调试。 ESP32C3的SPI接口是硬件SPI,支持DMA,速度应该还可以,但是我用杜邦线连接的,肯定会影响信号质量,估计时钟很难跑到50MHz了。 接线: 编写测试程序: /* SD card and FAT filesystem example. ...
Hi, For sd card in SPI mode i get following error everytime: I (330) cpu_start: Starting scheduler on PRO CPU. I (0) cpu_start: Starting scheduler on APP CPU. I (340) example: Initializing SD card I (340) example: Using SPI peripheral I ...