#define BTNN1 2
#define BTNN2 3
volatile int N1=0;
volatile int N2=0;
volatile int chagement=0;
void IsrPinN1 ();
void IsrPinN2 ();

void setup() {
pinMode(BTNN1, INPUT_PULLUP);
pinMode(BTNN2, INPUT_PULLUP);
pinMode(A0, INPUT);
pinMode(A1, INPUT);

Serial.begin(115200);

attachInterrupt(digitalPinToInterrupt(BTNN1), IsrPinN1, RISING);
attachInterrupt(digitalPinToInterrupt(BTNN2), IsrPinN2, FALLING);

}

void loop() {
  if (chagement==1)
  {
    int res=N1+N2;
    Serial.print("la somme de ");
    Serial.print(N1);
    Serial.print(" et ");
    Serial.print(N2);
    Serial.print(" est = ");
    Serial.println(res);
    chagement=0;
}
}
void IsrPinN1 ()
 {
  N1=analogRead(A0);
  chagement=1;
}

void IsrPinN2 ()
 {
  N2=analogRead(A1);
  chagement=1;
}