Question

Write a program in CircuitPython

to run on the FM4E that will turn on the heater for one minute if the button is pressed. The LED should be turned on when the heater is on, and it should go off when the heater turns off after one minute. Make sure your code has comments.

Answer 1

import time
import board
from digitalio import DigitalInOut, Direction, Pull

led = DigitalInOut(board.D13)
led.direction = Direction.OUTPUT

# For Gemma M0, Trinket M0, Metro M0 Express, ItsyBitsy M0 Express, Itsy M4 Express
switch = DigitalInOut(board.D2)
# switch = DigitalInOut(board.D5) # For Feather M0 Express, Feather M4 Express
# switch = DigitalInOut(board.D7) # For Circuit Playground Express
switch.direction = Direction.INPUT
switch.pull = Pull.UP

while True:
# We could also do "led.value = not switch.value"!
if switch.value:
led.value = False
else:
led.value = True

time.sleep(0.01) # debounce delay