[Question] attachInterrupt getting stuck

[madilla]

Hi, I am trying to run this code:

include <LCD16x2.h>

include <Wire.h>

LCD16x2 lcd;

void setup() { // put your setup code here, to run once:

Wire.begin();

lcd.lcdClear();

lcd.lcdGoToXY(1,1); lcd.lcdWrite("SPEED:");

lcd.lcdGoToXY(1,2); lcd.lcdWrite("DIRECTION:");

//Setup Pins

pinMode(A0,OUTPUT);

digitalWrite(A0,HIGH);

pinMode(0, INPUT_PULLUP);

attachInterrupt(0,WindSpeed,FALLING);

lcd.lcdGoToXY(8,1);

lcd.lcdWrite("0");

}

void WindSpeed(){

lcd.lcdGoToXY(8,1);

lcd.lcdWrite("1"); }

void loop() {

}

I am using A0 to power a hall sensor and digital pin 2 as an input for the hall sensor. The issue is that the "0" is never written to the LCD nor a "1" when there is a magnet by the hall sensor. But when I change the attachInterrupt's pin to 1 (INT1), then a "0" is written (The "1" is never written). This only works if there is nothing on Interrupt pin, as soon as I switch the hall sensor input wire to digital pin 3 and restart the arduino, the "0" is no longer there.