SD card failure on ESP32S3 Wroom

tueddy · 15. Mai 2024 um 20:30

Hi, you may have to setup the pins as described in the official Espressif example.

espressif/arduino-esp32/blob/50ef6f4369fb85139f000f7bbc5a9f9d5bc02b9f/libraries/SD_MMC/examples/SDMMC_Test/SDMMC_Test.ino#L217


      
            Serial.printf("%u bytes written for %lu ms\n", 2048 * 512, end);
            file.close();
          }
          
          void setup() {
            Serial.begin(115200);
            /*
              // If you want to change the pin assignment on ESP32-S3 uncomment this block and the appropriate
              // line depending if you want to use 1-bit or 4-bit line.
              // Please note that ESP32 does not allow pin change and will always fail.
              //if(! setPins(clk, cmd, d0)){
              //if(! setPins(clk, cmd, d0, d1, d2, d3)){
                  Serial.println("Pin change failed!");
                  return;
              }
              */
          
            if (!SD_MMC.begin()) {
              Serial.println("Card Mount Failed");
              return;
            }

There is an ESPuino fork where it was implemented for an S3:

github.com

toniebox-reverse-engineering/Hackieuino/blob/775b955564c770a0129d8c8c94fcc25141d046e6/src/SdCard.cpp#L20


      
          #if defined(SD_MMC_1BIT_MODE) || defined(SD_MMC_4BIT_MODE)
          	fs::FS gFSystem = (fs::FS)SD_MMC;
          #else
          	SPIClass spiSD(HSPI);
          	fs::FS gFSystem = (fs::FS)SD;
          #endif
          
          void SdCard_Init(void) {
          	#ifdef SD_MMC_CUSTOM_PINS
          		#ifdef SD_MMC_1BIT_MODE
          		SD_MMC.setPins(
          			SD_MMC_CUSTOM_CLK,
          			SD_MMC_CUSTOM_CMD,
          			SD_MMC_CUSTOM_DAT0
          		);
          		#endif
          		#ifdef SD_MMC_4BIT_MODE
          		SD_MMC.setPins(
          			SD_MMC_CUSTOM_CLK,
          			SD_MMC_CUSTOM_CMD,
          			SD_MMC_CUSTOM_DAT0,