public void spiTransfer(byte opcode, byte data, int addr = 0)
{
//Create an array with the data to shift out
int offset = addr * 2;
int maxbytes = numDevices * 2;
for (int i = 0; i < maxbytes; i++)
{
spiData[i] = (byte)0;
}
//put our device data into the array
spiData[offset + 1] = opcode;
spiData[offset] = data;
//enable the line
csPin.DigitalValue = false;
//Now shift out the data
Array.Reverse(spiData);
SPIModule.SendReceive(spiData);
//latch the data onto the display
csPin.DigitalValue = true;
}
