a

@@ -12,7 +12,7 @@ int data[] = { 0,0,0,0,0,0 };
 int state = 2;
 
 int KeypadRead(){
-	int i, keypadnum = -1;
+	int keypadnum = -1;
 	if (!digitalRead(Keypad[0])) {
 		keypadnum = 0;
 		state = 0;
@@ -52,6 +52,9 @@ void timer() {
 		delay(1);
 	}
 }
+void start() {
+	state = 0;
+}
 void stop() {
 	state = 1;
 }
@@ -78,14 +81,16 @@ void init() {
 }
 int main(){
 	init();
+	if (wiringPiISR(Keypad[0], INT_EDGE_FALLING, &start < 0) {
+		return 1;
+	}
 	if (wiringPiISR(Keypad[1], INT_EDGE_FALLING, &stop) < 0) {
 		return 1;
 	}
 	if (wiringPiISR(Keypad[2], INT_EDGE_FALLING, &reset) < 0) {
 		return 1;
 	}
-	if (!digitalRead(Keypad[0]) && state==0) {
-		state = 0;
+	if (state==0) {
 		unsigned long prevtime = millis();
 		while (1) {
 			unsigned long curtime = millis();