I2C Scanner sample¶
Overview¶
This sample sends I2C messages without any data (i.e. stop condition
after sending just the address). If there is an ACK for the
address, it prints the address as FOUND.
Warning
As there is no standard I2C detection command, this sample uses arbitrary SMBus commands (namely SMBus quick write and SMBus receive byte) to probe for devices. This sample program can confuse your I2C bus, cause data loss, and is known to corrupt the Atmel AT24RF08 EEPROM found on many IBM Thinkpad laptops. See also the i2cdetect man page
Building and Running¶
# From the root of the zephyr repository
west build -b nrf52840_blip samples/drivers/i2c_scanner -- -DCONF_FILE="prj.conf overlay-nrf52.conf"
west flash