通过 rx 引脚接收数据时如何中断 arduino

Question

what am I doing wrong ? I have the RX of the Bluetooth HC-07 wired into pin2 looking for a change in voltage when data is received to start a interrupt. 

I'm trying to cause an interrupt when data is received via the Bluetooth.     


    #include <SoftwareSerial.h>// import the serial library
    #include <PinChangeInt.h>


    SoftwareSerial Genotronex(10, 11); // RX, TX
    int ledpin=13; // led on D13 will show blink on / off
    int BluetoothData; // the data given from Computer
    void doSomething(void);

    void setup() {
      // wil run once
      Genotronex.begin(9600);// data rate for comunicating 
      Genotronex.println("Bluetooth On please press 1 or 0 blink LED ..");
      pinMode(ledpin,OUTPUT);


      interrupts();
      pinMode(2,INPUT);
      attachInterrupt(0,doSomething,  CHANGE);
    }

    void loop() {
      // Main body of code


    }



    void doSomething(){
     Genotronex.println("INTERRUPT!!!!!!!!!!!!");

    digitalWrite(ledpin,1);
    delay(1000);
    digitalWrite(ledpin,0);
    delay(1000);

    detachInterrupt(0);

    }

////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////

This is a repost of the code ,, I've taken out what the comments said and added what you recommended,, for the most part. The code runs but change state never changes back it only changes once? I've tried taking out DetachInterrupt but the actual interrupt stops working then ? Any more ideas? Thanks for the help btw

#include <SoftwareSerial.h>// import the serial library



SoftwareSerial Genotronex(10, 11); // RX, TX
int ledpin=13; // led on D13 will show blink on / off
int BluetoothData; // the data given from Computer
void doSomething(void);
volatile int state = LOW;


void setup() {
  // wil run once
  Genotronex.begin(9600);// data rate for comunicating 
  Genotronex.println("Bluetooth On please press 1 or 0 blink LED ..");
  pinMode(ledpin,OUTPUT);



  pinMode(2,INPUT);
  attachInterrupt(0,doSomething,  CHANGE);
}

void loop() {
  // Main body of code
digitalWrite(ledpin, state);

}



void doSomething(){

Genotronex.println("INTERRUPT!!!!!!!!!!!!");



 state = !state;



detachInterrupt(0);

}

Answer 1

delete: detachInterrupt(0);

If you can change interrupt from CHANGE to HIGH/LOW and add something like 'debouncing'. My version here (HIGH state interrupts):

void interruptfunction() { 

      //your interrupt code here

  while(1){
    if (digitalRead(2)==LOW){
      delay(50);
      if (digitalRead(2)==LOW) break;
    }
  }
}

Or this: (not tested)

void interruptfunction() { 

      //your interrupt code here

  if (digitalRead(2)==HIGH) state=true;
  else state=false;

  while(1){
    if (digitalRead(2)!=state){
      delay(50);
      if (digitalRead(2)!=state) break;
    }
  }
}

If you have to react on CHANGE try leaving detachInterrupt(0); but reattach it somewhere in your main loop.