AnalogWrite stops working when the value is reset to 0

[awende]

When writing PWM values, the analogWrite function (v1.0.5) gets stuck when writing a value of 0 a second time. Using the builtin LED connected to D5 of the ATP board and running the following code:

void setup() {
Serial.begin(115200);
delay(100);

pinMode(5, OUTPUT);
Serial.println("Start!");

analogWrite(5,0);
Serial.println("Wrote a value of 0");

analogWrite(5,1);
Serial.println("Wrote a value of 1");

analogWrite(5,0);
Serial.println("Wrote a value of 0");
}

void loop() {
Serial.println("Looping");
delay(100);
}

My serial terminal window displays:

⸮Start!
Wrote a value of 0
Wrote a value of 1

It seems that the interrupt isn't triggering when the value is changed back to 0 a second time. AnalogWrite seems to work as expected if I write any 8-bit value other than 0.

[oclyke]

Thanks @awende, this should be fixed by e3c1473.

I tested your example sketch with the changes and got the output:

⸮Start!
Wrote a value of 0
Wrote a value of 1
Wrote a value of 0
Looping
Looping
Looping
...
Looping