# analog read on ADC0 (pin31), map and write to dimmed led

from machine import ADC, Pin, PWM
import utime

def map(val, in1, in2, out1, out2): # in > out mapping
  # Figure out how 'wide' each range is
  inSpan  = in2  - in1
  outSpan = out2 - out1

  # Convert the in range into a 0-1 (float) range
  valueScaled = (val-in1)/inSpan
  # valueScaled = float(val-in1)/float(inSpan)

  # Convert the 0-1 range into in the out range
  return out1 + valueScaled * outSpan

# board config
measureAngle = ADC(26)
dimmed = PWM(Pin (15))
dimmed.freq(1000)
 
# cyclic
while True:
    #read analog value and print it
    angleBin = measureAngle.read_u16() # fullscale = 3V3
    angleVal = map(angleBin, 430, 53000, 0, 100)
    ledVal = 0.5*angleVal
    ledBin = int(map(ledVal, 0, 100, 430, 53000))
    print (angleBin, angleVal, ledVal, ledBin)
    dimmed.duty_u16(ledBin)
    
    utime.sleep (.5) # Ok to sleep for this read example !