[Solved] Interrupts problem

Official Hardware Classic Yún
1

Hello,
I am trying to make an interrupt when my pin 3 is LOW.

When I upload this sketch to the Yun, then the board becomes unrecognizable by USB and the serial port COMx is not working. I have to upload via wifi an other sketch so the serial port is up again .

int Int= 0;  // Interrupt 0 is on pin 3 so GND to pin3 is time++
int times = 0; 
void setup()
{                
	Serial.begin(9600);
	//Attach the interrupt to the input pin and monitor for LOW 
	attachInterrupt(Int, react, LOW);
}
 
void loop()                     
{

}
 
void react()
{
	Serial.print("Interrupt done ");
	Serial.print(times);
	Serial.println();
}
2

You have Serial.print in the interrupt service routine. That does not work. Set a flag in the ISR and do the printing in loop() if the flag indicates an interrupt occurred, then reset the flag after printing to prepare for the next interrupt..

3

Well thank you,

this forum is very helpful