Using SD_MMC library on Seeed Xiao ESP32S3 Sense?

Community General Info - Guidance
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Hi there,
Yes, In the wrong order though?
I think you may need the other pins defined as well, for a 1 Bit SD_MMC, did you try that?
also you don’t say what type or size it is? (32G-FAT32)
Can you add some code to print out what it thinks the pins are?
ie,

 Serial.println("--------------");
  Serial.print(CS);Serial.println("    CS");
  Serial.print(SS);Serial.println("    SS");
  Serial.print(MOSI);Serial.println("   MOSI"); // master out, slave in
  Serial.print(MISO);Serial.println("    MISO");  // master in, slave out
  Serial.print(SCK);Serial.println("    SCK"); // clock
  Serial.println("--------------");

use the names in the lib, see what comes out
So did you try the SD_MMC begin with pin (21) ?
I’m just tossing stuff at you I would try.
HTH
GL :slight_smile: PJ