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(); | |||
| } | |||