mid

@@ -6,6 +6,10 @@ const int FndSelectPin[6] = { 4, 17, 18, 27, 22, 23 };
 const int FndPin[8] = { 6, 12, 13, 16, 19, 20, 26, 21 };
 const int FndFont[10] = { 0x3F, 0x06, 0x5B, 0x4F, 0x66,
 			  0x6D, 0x7D, 0x07, 0x7F, 0x67 };
+const int Keypad[3] = { 11,9,10 };
+int time = 0;
+int data[] = { 0,0,0,0,0,0 };
+int state = 2;
 
 void init(){
 	int i;
@@ -21,6 +25,26 @@ void init(){
 		pinMode( FndPin[i], OUTPUT );
 		digitalWrite( FndPin[i], LOW );
 	}
+	for (i = 0; i < 3; i++)
+		pinMode(Keypad[i], INPUT);
+
+	if (wiringPiISR(Keypad[1], INT_EDGE_FALLING, &stop) < 0) {
+		return 1;
+	}
+	if (wiringPiISR(Keypad[2], INT_EDGE_FALLING, &reset) < 0) {
+		return 1;
+	}
+}
+int KeypadRead()
+{
+	int i, keypadnum = -1;
+	for (i = 0; i < 3; i++) {
+		if (!digitalRead(Keypad[i])) {
+			state = 1;
+			keypadnum = i; break;
+		}
+	}
+	return keypadnum;
 }
 void FndSelect(int position){
 	int i;
@@ -48,22 +72,40 @@ void FndDisplay(int position, int num){
 	}
 	FndSelect(position);
 }
-int main(){
+void timer() {
 	int pos;
-	int time=0;
+	for (pos = 0; pos < 6; pos++) {
+		FndDisplay(pos, data[pos]);
+		delay(1);
+	}
+}
+void stop() {
+	timer();
+	state = 1;
+}
+void reset() {
+	time = 0;
+	state = 2;
+}
+int main(){
 	init();
-	unsigned long prevtime=millis();
-	while(1){
-		unsigned long curtime=millis();
-		if(curtime-prevtime >= 9){
-			prevtime=curtime;
+	if (KeypadRead() == 0) {
+		state = 0;
+		unsigned long prevtime = millis();
+		while (1) {
+			unsigned long curtime = millis();
+			if (curtime - prevtime >= 9) {
+				prevtime = curtime;
 				time++;
 			}
-		int data[6]={time%10, (time%100)/10, (time%1000)/100,
-			(time/1000)%10, (time/10000)%10, time/100000};
-		for(pos=0;pos<6;pos++){
-			FndDisplay(pos,data[pos]);
-			delay(1);
+			data[6] = { time % 10, (time % 100) / 10, (time % 1000) / 100,
+				(time / 1000) % 10, (time / 10000) % 10, time / 100000 };
+			timer();
+		}
+	}
+	else if (state > 0) {
+		while (1) {
+			timer();
 		}
 	}
 	return 0;