#define ADCpin  PA3

int sensorValue = 0;

void setup() {
  pinMode(PA0,OUTPUT);
  pinMode(PA6,OUTPUT);
  gpio_write_bit(GPIOA, 0, LOW);
  gpio_write_bit(GPIOA, 6, HIGH);

  Serial.begin(19200);

  pinMode(ADCpin,INPUT_ANALOG);
}

void loop() {

  GPIOA->regs->ODR ^= 65;  //flip both driver pins; stm32duino specific(?)
  sensorValue = analogRead(ADCpin);
  Serial.println(sensorValue);
  delay(1);
  GPIOA->regs->ODR ^= 65;
  delay(10);
  
}