button.c

int motorButton = 2;
int motorOneLeft = 3;
int motorOneRight = 4;
int motorTwoLeft = 5;
int motorTwoRight = 6;
int motorThreeLeft = 7;
int motorThreeRight = 8;

int motorAllDelay = 1000;

int savedButtonState = 0;
int savedTime = 0;

void internal_adjustMotor(int leftAddress, int rightAddress, int leftVal, int RightVal, int speed) {
	if (leftVal == 0) {
		digitalWrite(leftAddress, LOW);
	}
	else if (leftVal == 1) {
		digitalWrite(leftAddress, HIGH);
	}

	if (rightVal == 0) {
		digitalWrite(rightAddress, LOW);
	}
	else if (rightVal == 1) {
		digitalWrite(rightAddress, HIGH);
	}

	// Speed
	analogWrite(leftAddress, speed);
	analogWrite(rightAddress, speed);
}

void digitalMotorMode(int motor, int status, int speed) { // status 0 = off, status 1 = left, status 2 = right
	if (motor == 1) {
		if (status == 0) {
			internal_adjustMotor(motorOneLeft, motorOneRight, 0, 0, speed);
		}
		else if (status == 1) {
			internal_adjustMotor(motorOneLeft, motorOneRight, 1, 0, speed);
		}
		else if (status == 2) {
			internal_adjustMotor(motorOneLeft, motorOneRight, 0, 1, speed);
		}
	}
	if (motor == 2) {
		if (status == 0) {
			internal_adjustMotor(motorTwoLeft, motorTwoRight, 0, 0, speed);
		}
		else if (status == 1) {
			internal_adjustMotor(motorTwoLeft, motorTwoRight, 1, 0, speed);
		}
		else if (status == 2) {
			internal_adjustMotor(motorTwoLeft, motorTwoRight, 0, 1, speed);
		}
	}
	if (motor == 3) {
		if (status == 0) {
			internal_adjustMotor(motorThreeLeft, motorThreeRight, 0, 0, speed);
		}
		else if (status == 1) {
			internal_adjustMotor(motorThreeLeft, motorThreeRight, 1, 0, speed);
		}
		else if (status == 2) {
			internal_adjustMotor(motorThreeLeft, motorThreeRight, 0, 1, speed);
		}
	}
}

void setup() {
	// initialize serial communication at 9600 bits per second:
	Serial.begin(9600);
	// make the pushbutton's pin an input:
	pinMode(motorButton, INPUT);

	pinMode(motorOneLeft, OUTPUT);
	pinMode(motorOneRight, OUTPUT);
	pinMode(motorTwoLeft, OUTPUT);
	pinMode(motorTwoRight, OUTPUT);
	pinMode(motorThreeLeft, OUTPUT);
	pinMode(motorThreeRight, OUTPUT);
}

void loop() {
	int buttonState = digitalRead(motorButton);

	if (savedButtonState == 0 && buttonState == 1) {
		// Wir nehmen an 2 = Ausfahren (right)
		digitalMotorMode(1, 2, 10);
		digitalMotorMode(2, 2, 10);
		digitalMotorMode(3, 2, 10);

		// We got with a sum delay here, it's easier to set the motor speed .. another option would be
		// delaying after each motor starting with the one taking the most time, second most etc.
		delay(motorAllDelay);

		// power off
		digitalMotorMode(1, 0, 0);
		digitalMotorMode(2, 0, 0);
		digitalMotorMode(3, 0, 0);
	}
	else if (savedButtonState == 1 && buttonState == 0) {
		// Wir nehmen an 1 = Einfahren (left)
		digitalMotorMode(1, 1, 10);
		digitalMotorMode(2, 1, 10);
		digitalMotorMode(3, 1, 10);

		delay(motorAllDelay);

		// power off
		digitalMotorMode(1, 0, 0);
		digitalMotorMode(2, 0, 0);
		digitalMotorMode(3, 0, 0);

		savedTime = 0;
	}
	else if (buttonState == 1) {
		savedTime += 1;

		if (savedTime == 10000) { // 10 sec
			digitalMotorMode(1, 1, 10);
			digitalMotorMode(2, 1, 10);
			digitalMotorMode(3, 1, 10);

			delay(motorAllDelay);

			digitalMotorMode(1, 0, 0);
			digitalMotorMode(2, 0, 0);
			digitalMotorMode(3, 0, 0);
		}

		delay(1);
	}

	savedButtonState = buttonState;
}