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Tmw/turnOnLed.ino

Last active February 1, 2016 21:51
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expanding our turnOnLed function
Raw
turnOnLed.ino
// turn on correct LED using 595's
void turnOnLed(int ledNr, int layer) {
digitalWrite(latchPin, LOW);
SPI.transfer(1<<layer);
if (ledNr >= 8) {
SPI.transfer(1<<ledNr-8);
SPI.transfer(0);
}
else {
SPI.transfer(0);
SPI.transfer(1<<ledNr);
}
digitalWrite(latchPin, HIGH);
}
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