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README.md

ODROID Energy Monitor

These implementations of the energymon interface read from INA-231 power sensors on Hardkernel ODROID systems running Linux. The power sensors are polled at regular intervals to estimate energy consumption. One implementation uses sysfs and the other uses ioctl.

Prerequisites

You must be using an ODROID system with embedded power sensors. This has been tested on the XU+E and XU3 models.

Usage

If using the sysfs implementation, the sensors must be enabled in advance. Sensors can be found in /sys/bus/i2c/drivers/INA231/. So for example, to enable the sensors:

echo 1 > /sys/bus/i2c/drivers/INA231/3-0040/enable
echo 1 > /sys/bus/i2c/drivers/INA231/3-0041/enable
echo 1 > /sys/bus/i2c/drivers/INA231/3-0044/enable
echo 1 > /sys/bus/i2c/drivers/INA231/3-0045/enable