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80 lines
1.7 KiB
Go
80 lines
1.7 KiB
Go
// Copyright 2018 The Periph Authors. All rights reserved.
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// Use of this source code is governed under the Apache License, Version 2.0
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// that can be found in the LICENSE file.
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// Package ina219smoketest tests the ina219 device.
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package ina219smoketest
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import (
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"errors"
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"flag"
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"fmt"
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"periph.io/x/conn/i2c/i2creg"
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"periph.io/x/conn/physic"
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"periph.io/x/devices/ina219"
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"periph.io/x/host"
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)
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// SmokeTest is imported by periph-smoketest.
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type SmokeTest struct {
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}
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// Name implements the SmokeTest interface.
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func (s *SmokeTest) Name() string {
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return "ina219"
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}
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// Description implements the SmokeTest interface.
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func (s *SmokeTest) Description() string {
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return "Tests INA219 over I²C"
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}
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// Run implements the SmokeTest interface.
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func (s *SmokeTest) Run(f *flag.FlagSet, args []string) (err error) {
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i2cID := f.String("i2c", "", "I²C bus to use")
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i2cAddr := f.Int("ia", 0x40, "I²C bus address use: 0x40 to 0x4f")
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if err := f.Parse(args); err != nil {
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return err
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}
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if f.NArg() != 0 {
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f.Usage()
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return errors.New("unrecognized arguments")
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}
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fmt.Println("Starting INA219 Current Sensor\nctrl+c to exit")
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if _, err := host.Init(); err != nil {
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return err
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}
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// Open default i2c bus.
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bus, err := i2creg.Open(*i2cID)
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if err != nil {
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return err
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}
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defer func() {
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if err2 := bus.Close(); err == nil {
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err = err2
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}
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}()
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// Create a new power sensor a sense resistor of 100 mΩ.
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config := &ina219.Opts{
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Address: *i2cAddr,
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SenseResistor: 100 * physic.MilliOhm,
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MaxCurrent: 3200 * physic.MilliAmpere,
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}
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sensor, err := ina219.New(bus, config)
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if err != nil {
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return err
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}
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pm, err := sensor.Sense()
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if err != nil {
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return err
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}
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fmt.Println(pm)
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return nil
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}
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