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anecdata/led_tests.py

Last active March 9, 2019 22:04
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Test of built-in red LED and NeoPixel on Feather M4 and PyPortal
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led_tests.py
import board
import time
from digitalio import DigitalInOut, Direction # , Pull
import neopixel
import random
led = DigitalInOut(board.D13)
led.direction = Direction.OUTPUT
# PyPortal and Feather M4 schematics show built-in NeoPixel is WS2812B
# Use from Adafruit PyPortal Class https://github.com/adafruit/Adafruit_CircuitPython_PyPortal/blob/1939a1e814af9c57e35e5a39ca3f6f784ab843f7/adafruit_pyportal.py
# ...this works on my Feather M4, but not on my PyPortal:
neo = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2)
while True:
led.value = not led.value
neo[0] = (random.randrange(0, 256), random.randrange(0, 256), random.randrange(0, 256))
neo.show()
time.sleep(1)
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anecdata commented Mar 7, 2019 •
edited

Update: NeoPixel works in 4.0.0 beta 2, but LED doesn't. LED was fixed in some subsequent builds, but NeoPixel was broken. Both now work in 4.0.0-beta.3

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