#include <SoftwareSerial.h> 


SoftwareSerial mySerial(0,1);
int led1 = 8;
int led2 = 7;
int button = 3;

void setup() {                
  
  pinMode(led1, OUTPUT); 
    pinMode(led2, OUTPUT); 
  pinMode(button, INPUT); 
 
  mySerial.begin(9600); 
mySerial.println("Hello, world?"); 
}


void loop() {
  int inputchar = mySerial.read();
  
  if (inputchar != -1){
  switch (inputchar){
    case 'o':
      //mySerial.print("p");
      digitalWrite(led2, HIGH); 
      break;
      
    case 'p':
     // mySerial.print("LED OFF\n");
      digitalWrite(led2, LOW); 
     break; 
     
  }
  }
  
  if (digitalRead(button) == LOW)
  {
   mySerial.println("o"); 
  // digitalWrite(led1, HIGH); 
}
else {
    mySerial.println("p"); 
}

}