35 lines
978 B
Python
35 lines
978 B
Python
# SPDX-FileCopyrightText: 2017 Limor Fried for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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"""CircuitPython I2C Device Address Scan"""
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# If you run this and it seems to hang, try manually unlocking
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# your I2C bus from the REPL with
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# >>> import board
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# >>> board.I2C().unlock()
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import time
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import board
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# To use default I2C bus (most boards)
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i2c = board.I2C() # uses board.SCL and board.SDA
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# i2c = board.STEMMA_I2C() # For using the built-in STEMMA QT connector on a microcontroller
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# To create I2C bus on specific pins
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# import busio
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# i2c = busio.I2C(board.SCL1, board.SDA1) # QT Py RP2040 STEMMA connector
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# i2c = busio.I2C(board.GP1, board.GP0) # Pi Pico RP2040
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while not i2c.try_lock():
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pass
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try:
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while True:
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print(
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"I2C addresses found:",
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[hex(device_address) for device_address in i2c.scan()],
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)
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time.sleep(2)
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finally: # unlock the i2c bus when ctrl-c'ing out of the loop
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i2c.unlock()
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