SPI on XIAO esp32s3

Hit there,
Try
8,9,10… On Xiao.

  pinMode(D6, INPUT_PULLUP);  // /WP
  pinMode(D7, INPUT_PULLUP);  // /HOLD
  pinMode(SS_SPI0, OUTPUT);          // CS for flash
  digitalWrite(SS_SPI0, HIGH);       // <-- Set CS pin HIGH to deselect
Serial.println("--------------"); Check what it thinks they are.
  Serial.println(SS_SPI0);
  Serial.println(MOSI); // master out, slave in
  Serial.println(MISO); // master in, slave out
  Serial.println(SCK);  // clock
 Serial.println("--------------");

HTH
GL :slight_smile: PJ