The code was doing: pinMode(slaveSelectPin, OUTPUT); pinMode(slaveSelectPin, HIGH); Second pinMode should be digitalWritemain
@@ -37,7 +37,7 @@ const int slaveSelectPin = 10; | |||
void setup() { | |||
// set the slaveSelectPin as an output: | |||
pinMode (slaveSelectPin, OUTPUT); | |||
pinMode (slaveSelectPin, HIGH); | |||
digitalWrite (slaveSelectPin, HIGH); | |||
// initialize SPI: | |||
SPI.begin(); | |||
} |