const int buttonR = 2;  // Pin for the "R" limit switch
const int buttonL = 4;  // Pin for the "L" limit switch
const int m_R = 8;    // Pin for the "M_R" motor
const int m_L = 7;    // Pin for the "M_L" motor

int stateMR = LOW;      // Variable to store the state of "M_R" motor
int stateML = LOW;      // Variable to store the state of "M_L" motor
int buttonRState = 0;   // Variable to store the state of the "R" button
int buttonLState = 0;   // Variable to store the state of the "L" button
int lastButtonRState = 0;  // Variable to store the previous state of the "R" button
int lastButtonLState = 0;  // Variable to store the previous state of the "L" button

void setup() {
  pinMode(buttonR, INPUT);
  pinMode(buttonL, INPUT);
  pinMode(m_R, OUTPUT);
  pinMode(m_L, OUTPUT);
}

void loop() {
  buttonRState = digitalRead(buttonR);
  buttonLState = digitalRead(buttonL);

  // Check if the "R" button is pressed and released
  if (buttonRState == HIGH && lastButtonRState == LOW) {
    // Toggle the state of "M_L" motor
    stateML = !stateML;

    // Turn off "M_R" motor
    digitalWrite(m_R, LOW);
    delay(1000);    
    // Set the state of "M_L" motor
    digitalWrite(m_L, stateML);
  }

  // Check if the "L" button is pressed and released
  if (buttonLState == HIGH && lastButtonLState == LOW) {
    
    // Toggle the state of "M_R" motor
    stateMR = !stateMR;
    // Turn off "M_L" motor
    digitalWrite(m_L, LOW);
    delay(1000);
    // Set the state of "M_R" motor
    digitalWrite(m_R, stateMR);
  }

  lastButtonRState = buttonRState;
  lastButtonLState = buttonLState;
}