Interrupts

[nirbar11 0]

Hello all,

Im using the MSP430 connecting to a device which outputs 4 bits sequence (parallel) every once in a while  and I want to get an interrupt for each new input sequence in port 1.

The input sequence voltage level is 3.6V and the MSP powered from the micro-USB (connected to the PC).

I also connected the GND of the device to the GND of the MSP.

this is my code :

 

void setup(){
Serial.begin(9600);

pinMode(P1_2,INPUT); 
pinMode(P1_3,INPUT); 
pinMode(P1_4,INPUT);
pinMode(P1_5,INPUT);

attachInterrupt(P1,intFunc,CHANGE); 

};

void intFunc(){

Serial.print("this is an interrupt - the value of P3.1 is :");
Serial.println(digitalRead(P1_3));

}

void loop()
{
delay(2000);
Serial.println("the is the main routine");
}