Simple test

Ensure your device works with this simple test.

examples/74hc595_simpletest.py
 1# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 2# SPDX-License-Identifier: MIT
 3
 4import time
 5
 6import board
 7import busio
 8import digitalio
 9
10import adafruit_74hc595
11
12spi = busio.SPI(board.SCK, MOSI=board.MOSI)
13
14latch_pin = digitalio.DigitalInOut(board.D5)
15sr = adafruit_74hc595.ShiftRegister74HC595(spi, latch_pin)
16
17pin1 = sr.get_pin(1)
18
19while True:
20    pin1.value = True
21    time.sleep(1)
22    pin1.value = False
23    time.sleep(1)