boards/shields/adafruit_ina228/doc/index.rst
.. _adafruit_ina228:
Adafruit INA228 Shield #############################
Overview
The Adafruit INA228 High or Low Side Power Monitor_ features the
TI INA228 current sensor_, an I2C 20-bit power monitoring chip, with two
STEMMA QT connectors. This board is capable of measuring up to 85VDC
common-mode, high or low side measurements ranging from milli-amps to amps.
.. figure:: adafruit_ina228.webp :align: center :alt: Adafruit INA228 Shield
Adafruit INA228 Shield (Credit: Adafruit)
Requirements
This shield can be used with boards which provide an I2C connector, for
example STEMMA QT or Qwiic connectors.
The target board must define a zephyr_i2c node label.
See :ref:shields for more details.
+--------------+-------------------+ | Shield Pin | Function | +==============+===================+ | SDA | INA228 I2C SDA | +--------------+-------------------+ | SCL | INA228 I2C SCL | +--------------+-------------------+ | ALRT | INA228 ALERT out | +--------------+-------------------+ | VIN- | Current sense neg | +--------------+-------------------+ | VIN+ | Current sense pos | +--------------+-------------------+ | VBUS | Voltage sense | +--------------+-------------------+
See :dtcompatible:ti,ina228 for documentation on how to adjust the
devicetree file, for example to adjust the sample averaging.
Programming
Set --shield adafruit_ina228 when you invoke west build. For example
when running the :zephyr:code-sample:sensor_shell sample:
.. zephyr-app-commands:: :zephyr-app: samples/sensor/sensor_shell :board: adafruit_qt_py_rp2040 :shield: adafruit_ina228 :goals: build
.. _Adafruit INA228 High or Low Side Power Monitor: https://learn.adafruit.com/adafruit-ina228-i2c-power-monitor/
.. _TI INA228 Current sensor: https://www.ti.com/product/INA228