#define LED 5
#define BP 10

void setup() {
  // put your setup code here, to run once:
pinMode(BP, INPUT);
pinMode(LED, OUTPUT);
Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
if (digitalRead(BP) == LOW) {
  digitalWrite(LED, HIGH);
}
else {
  digitalWrite(LED, LOW);
}
}