28 lines
899 B
ReStructuredText
28 lines
899 B
ReStructuredText
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.. _i2c_scanner:
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I2C Scanner sample
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##################
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Overview
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********
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This sample sends I2C messages without any data (i.e. stop condition
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after sending just the address). If there is an ACK for the
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address, it prints the address as ``FOUND``.
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.. warning:: As there is no standard I2C detection command, this sample
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uses arbitrary SMBus commands (namely SMBus quick write and SMBus
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receive byte) to probe for devices. This sample program can confuse
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your I2C bus, cause data loss, and is known to corrupt
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the Atmel AT24RF08 EEPROM found on many IBM Thinkpad laptops.
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See also the `i2cdetect man page
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<http://manpages.ubuntu.com/manpages/bionic/man8/i2cdetect.8.html>`_
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Building and Running
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********************
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.. zephyr-app-commands::
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:zephyr-app: samples/drivers/i2c_scanner
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:board: nrf52840_blip
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:conf: "prj.conf overlay-nrf52.conf"
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:goals: build flash
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