INA 3221 raspberry pi - wiring pi
to use this program you need to have wiringPi installed on your raspberry pi and I2C bus activated.
apt-get install wiringpi
also modify your device address according to your setup.
to scan for device addess use i2cdetect -y 1 (1 is the bus number) you may have multiple bus enabled.
to compile use: gcc ina3221.c -o ina3221 -lwiringPi
Feel free to add comments.