unsigned char RED_LED = 23;

unsigned char YEL_LED = 19;

unsigned char GRE_LED = 18;

char PB_GREEN = 27;
char PB_BLUE = 25;


void setup() {
  pinMode(RED_LED, OUTPUT);
  pinMode(YEL_LED, OUTPUT);
  pinMode(GRE_LED, OUTPUT);
 
 Serial.begin(115200);
}

void loop() {
  //PUT YOUR MAIN CODE HERE, TO RUN REPEATEDLY:

char VAL_PB_BLUE;
char VAL_PB_GREEN;

  VAL_PB_BLUE = digitalRead(PB_BLUE);
  VAL_PB_GREEN = digitalRead(PB_GREEN);
  Serial.print("PB BLUE = "); Serial.println(VAL_PB_BLUE, DEC);
  Serial.print("PB GREEN = "); Serial.println(VAL_PB_GREEN, DEC);

if ( (VAL_PB_BLUE == 0) && (VAL_PB_GREEN == 0) )
{
  digitalWrite(RED_LED, HIGH);
  digitalWrite(GRE_LED, HIGH);
  
}
else if ( (VAL_PB_BLUE == 1) && (VAL_PB_GREEN == 0) )
{
  digitalWrite(RED_LED, LOW);
  digitalWrite(GRE_LED, HIGH);

}
else if ( (VAL_PB_BLUE == 0) && (VAL_PB_GREEN == 1) )
{
  digitalWrite(RED_LED, HIGH);
  digitalWrite(GRE_LED, LOW);

}
else if ( (VAL_PB_BLUE == 1) && (VAL_PB_GREEN == 1) )
{
  digitalWrite(RED_LED, LOW);
  digitalWrite(GRE_LED, LOW);
}

}