Simple test

Ensure your device works with this simple test.

examples/bitbangio_simpletest.py
 1# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 2# SPDX-License-Identifier: MIT
 3
 4"""
 5This example is for demonstrating how to retrieving the
 6board ID from a BME280, which is stored in register 0xD0.
 7It should return a result of [96]
 8"""
 9
10import board
11import digitalio
12import adafruit_bitbangio as bitbangio
13
14# Change these to the actual connections
15SCLK_PIN = board.D6
16MOSI_PIN = board.D17
17MISO_PIN = board.D18
18CS_PIN = board.D5
19
20cs = digitalio.DigitalInOut(CS_PIN)
21cs.switch_to_output(value=True)
22
23spi = bitbangio.SPI(SCLK_PIN, MOSI=MOSI_PIN, MISO=MISO_PIN)
24cs.value = 0
25while not spi.try_lock():
26    pass
27spi.write([0xD0])
28data = [0x00]
29spi.readinto(data)
30spi.unlock()
31cs.value = 1
32print("Result is {}".format(data))