| .. _i2c_scanner: |
| |
| 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 |
| <http://manpages.ubuntu.com/manpages/bionic/man8/i2cdetect.8.html>`_ |
| |
| Building and Running |
| ******************** |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/drivers/i2c_scanner |
| :board: nrf52840_blip |
| :conf: "prj.conf overlay-nrf52.conf" |
| :goals: build flash |
| |
