Something useful?

[idahowalker]

My recent addition of a SPI device to the ESP32 was a bit of a challenge until I ran across this:

Code: Select all

  Serial.println(MOSI); // Master Out Slave In, SDI, DIN
 Serial.println(MISO);  // Master In Slave Out, SDO
Serial.println(SCK); // Clock
Serial.println(SS); // Slave Select, Chip Seclect

Placed in my setup the PinOut diagram became a bit more clear.