Closed
Description
On an Arduino DUE::
The example sketch below does not work on 1.5.6-r2.
I have an LED connected between a digital and an analogue pin. But in 1.5.6-r2, once I use the AnalogRead() - the LED will no longer be 'controllable' using the pinMode/DigitalWrite. The sketch demonstrates this because (in 1.5.6-r2) the LED will stop blinking after the AnalogRead(); whilst in 1.5.4 this sketch runs flawlessly, and the LED blinks happily away -as expected...
All the best,
Danny.
// for Arduino DUE:
const int anode = 24; // Digital pin 22
const int cathode = 54; // Analog pin 0
const int p = 250;
void setup() {
analogReadResolution(12);
pinMode(anode, OUTPUT);
pinMode(cathode, OUTPUT);
Serial.begin(115200);
}
void loop() {
// Led OFF
digitalWrite(anode, LOW);
digitalWrite(cathode, LOW);
delay(p);
// Reverse Charge
digitalWrite(anode, LOW);
digitalWrite(cathode, HIGH);
// Measure
pinMode(cathode, INPUT);
delay(20);
int val = analogRead(0); //--> THIS is the culprit (!)
// report
Serial.print("analogRead: ");
Serial.println(val,DEC);
// Led ON
//## --> DOES'T WORK ON 1.5.6-r2(!) The LED remains 'off' and never blinks ON again!
//## --> Works fine on 1.5.4, blinks -as expected.
pinMode(cathode, OUTPUT);
digitalWrite(anode, HIGH);
digitalWrite(cathode, LOW);
delay(p);
}