/* STM32 Blue Pill project using the STM32 Arduino Core (stm32duino) */

#define LED PB3
#define BUTTON PB0

void setup() {
  pinMode(LED, OUTPUT);
  pinMode(BUTTON, INPUT);
}

void loop() {
  if(digitalRead(BUTTON) == LOW)
  {
    digitalWrite(LED, HIGH);
  }
  else 
  {
    digitalWrite(LED, LOW);
  }
  delay(10);
}