#!/usr/bin/env python
# -*- coding: utf-8 -*-

# Test program to illustrate INA219 class usage

import ina219

if __name__ == "__main__":

  # Connecting to INA219 in Debug mode
  chip = ina219.ina219(debug=True)

  # Perform a soft reset on chip
  chip.SoftReset()

  # Retrieve bus voltage
  chip.GetBusVoltage()

  # Retrieve shunt voltage
  chip.GetShuntVoltage()

  # Calibrate chip with an expected max current of 3.2A
  # and a shunt resistor or 0.1ohms
  chip.Calibrate(r_shunt=0.1, i_max=3.2)

  # Force INA219 to trigger a new measurement
  # (if configured in triggered mode)
  chip.TriggerMeasurement()

  # Retrieve calculated current
  chip.GetCurrent()

  # Retrieve calculated power
  chip.GetPower()

  # Configure chip using full parameters
  conf = chip.CONF_BRNG_32V | chip.CONF_PGA_DIV8 | chip.CONF_BADC_12BIT | \
         chip.CONF_SADC_12BIT | chip.CONF_MODE_SHUNT_BUS_CONT
  chip.Configure(config=conf)

  # Configure chip by changing a single value
  # -> Set bus voltage range to 16V
  chip.Configure(single_value=chip.CONF_BRNG_16V, mask=chip.CONF_BRNG_MASK)