Simple test¶
Ensure your device works with this simple test.
examples/onewire_simpletest.py¶
1# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
2# SPDX-License-Identifier: MIT
3
4import board
5from adafruit_onewire.bus import OneWireBus
6
7# Create the 1-Wire Bus
8# Use whatever pin you've connected to on your board
9ow_bus = OneWireBus(board.D2)
10
11# Reset and check for presence pulse.
12# This is basically - "is there anything out there?"
13print("Resetting bus...", end="")
14if ow_bus.reset():
15 print("OK.")
16else:
17 raise RuntimeError("Nothing found on bus.")
18
19# Run a scan to get all of the device ROM values
20print("Scanning for devices...", end="")
21devices = ow_bus.scan()
22print("OK.")
23print("Found {} device(s).".format(len(devices)))
24
25# For each device found, print out some info
26for i, d in enumerate(devices):
27 print("Device {:>3}".format(i))
28 print("\tSerial Number = ", end="")
29 for byte in d.serial_number:
30 print("0x{:02x} ".format(byte), end="")
31 print("\n\tFamily = 0x{:02x}".format(d.family_code))
32
33# Usage beyond this is device specific. See a CircuitPython library for a 1-Wire
34# device for examples and how OneWireDevice is used.