1.. _ina219:
2
3INA219 Bidirectional Power/Current Monitor
4##########################################
5
6Overview
7********
8
9This sample application measures shunt voltage, bus voltage, power and current
10every 2 seconds and prints them to console.
11The calibration/configuration parameters can be set in the devicetree file.
12
13References
14**********
15
16 - `INA219 sensor <https://www.ti.com/product/INA219>`_
17
18Wiring
19******
20
21The supply voltage of the INA219 can be in the 3V to 5.5V range.
22The common mode voltage of the measured bus can be in the 0V to 26V range.
23
24Building and Running
25********************
26
27.. zephyr-app-commands::
28   :zephyr-app: samples/sensor/ina219
29   :board: blackpill_f411ce
30   :goals: build flash
31
32Sample Output
33=============
34When monitoring a 3.3 V bus with a 0.1 Ohm shunt resistor
35you should get a similar output as below, repeated every 2 seconds:
36
37.. code-block:: console
38
39        Shunt: 0.001570 [V] -- Bus: 3.224000 [V] -- Power: 0.504000 [W] -- Current: 0.157000 [A]
40
41
42A negative sign indicates current flowing in reverse direction:
43
44.. code-block:: console
45
46        Shunt: -0.001560 [V] -- Bus: 3.224000 [V] -- Power: 0.502000 [W] -- Current: -0.156000 [A]
47