from machine import Pin, ADC, PWM

def forPwm(Vin,dutY,frequencY):
  pwmObject.freq(frequencY)
  pwmObject.duty(dutY)
  percentageOfDuty = int(100 * (dutY/1023))
  string = " The voltage is {:0.2f} for {:5d} hertz and {:2d} %"
  print(string.format(Vin,frequencY,percentageOfDuty), end = "\r")

def decider(voltage):
  if voltage<1:
    forPwm(voltage,256,2000)
  elif 1<voltage<2:
    forPwm(voltage,768,5000)
  elif 2<voltage<3:
    forPwm(voltage,512,60000)
  elif voltage>3:
    forPwm(voltage,205,5)


def handler():
  adcReading = adcObject.read()
  vIn = 3.3 * (adcReading/4095)
  decider(vIn)

adcObject = ADC(Pin(34))
adcObject.atten(ADC.ATTN_11DB)
pwmObject = PWM(Pin(33))

while True:
  handler()