XIAO NRF52840 Plus

StuartsProjects · October 15, 2025, 4:56pm

PJ_Glasso:

#if defined(SPI1)
  SPI1.setPins(SCK_PIN, MISO_PIN, MOSI_PIN);  // <-- the important bit
  SPI1.begin();
  Serial.println("SPI1 started.");
#else
  Serial.println("ERROR: This board/core doesn't define SPI1.");
#endif

Did you mean;

SPI1.setPins(MISO_PIN, SCK_PIN, MOSI_PIN); // <-- the important bit ?