mirror of
https://github.com/hybridgroup/gobot.git
synced 2025-04-27 13:48:56 +08:00
191 lines
7.1 KiB
Go
191 lines
7.1 KiB
Go
package i2c
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"strings"
|
|
"testing"
|
|
|
|
"gobot.io/x/gobot"
|
|
"gobot.io/x/gobot/gobottest"
|
|
)
|
|
|
|
// this ensures that the implementation is based on i2c.Driver, which implements the gobot.Driver
|
|
// and tests all implementations, so no further tests needed here for gobot.Driver interface
|
|
var _ gobot.Driver = (*BME280Driver)(nil)
|
|
|
|
func initTestBME280WithStubbedAdaptor() (*BME280Driver, *i2cTestAdaptor) {
|
|
adaptor := newI2cTestAdaptor()
|
|
return NewBME280Driver(adaptor), adaptor
|
|
}
|
|
|
|
func TestNewBME280Driver(t *testing.T) {
|
|
var di interface{} = NewBME280Driver(newI2cTestAdaptor())
|
|
d, ok := di.(*BME280Driver)
|
|
if !ok {
|
|
t.Errorf("NewBME280Driver() should have returned a *BME280Driver")
|
|
}
|
|
gobottest.Refute(t, d.Driver, nil)
|
|
gobottest.Assert(t, strings.HasPrefix(d.Name(), "BMP280"), true)
|
|
gobottest.Assert(t, d.defaultAddress, 0x77)
|
|
gobottest.Assert(t, d.ctrlPwrMode, uint8(0x03))
|
|
gobottest.Assert(t, d.ctrlPressOversamp, BMP280PressureOversampling(0x05))
|
|
gobottest.Assert(t, d.ctrlTempOversamp, BMP280TemperatureOversampling(0x01))
|
|
gobottest.Assert(t, d.ctrlHumOversamp, BME280HumidityOversampling(0x05))
|
|
gobottest.Assert(t, d.confFilter, BMP280IIRFilter(0x00))
|
|
gobottest.Refute(t, d.calCoeffs, nil)
|
|
}
|
|
|
|
func TestBME280Options(t *testing.T) {
|
|
// This is a general test, that options are applied in constructor by using the common WithBus() option and
|
|
// least one of this driver. Further tests for options can also be done by call of "WithOption(val)(d)".
|
|
d := NewBME280Driver(newI2cTestAdaptor(), WithBus(2),
|
|
WithBME280PressureOversampling(0x01),
|
|
WithBME280TemperatureOversampling(0x02),
|
|
WithBME280IIRFilter(0x03),
|
|
WithBME280HumidityOversampling(0x04))
|
|
gobottest.Assert(t, d.GetBusOrDefault(1), 2)
|
|
gobottest.Assert(t, d.ctrlPressOversamp, BMP280PressureOversampling(0x01))
|
|
gobottest.Assert(t, d.ctrlTempOversamp, BMP280TemperatureOversampling(0x02))
|
|
gobottest.Assert(t, d.confFilter, BMP280IIRFilter(0x03))
|
|
gobottest.Assert(t, d.ctrlHumOversamp, BME280HumidityOversampling(0x04))
|
|
}
|
|
|
|
func TestBME280Measurements(t *testing.T) {
|
|
bme280, adaptor := initTestBME280WithStubbedAdaptor()
|
|
adaptor.i2cReadImpl = func(b []byte) (int, error) {
|
|
buf := new(bytes.Buffer)
|
|
// Values produced by dumping data from actual sensor
|
|
if adaptor.written[len(adaptor.written)-1] == bmp280RegCalib00 {
|
|
buf.Write([]byte{126, 109, 214, 102, 50, 0, 54, 149, 220, 213, 208, 11, 64, 30, 166, 255, 249, 255, 172, 38, 10, 216, 189, 16})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bme280RegCalibDigH1 {
|
|
buf.Write([]byte{75})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bmp280RegTempData {
|
|
buf.Write([]byte{129, 0, 0})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bme280RegCalibDigH2LSB {
|
|
buf.Write([]byte{112, 1, 0, 19, 1, 0, 30})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bme280RegHumidityMSB {
|
|
buf.Write([]byte{111, 83})
|
|
}
|
|
copy(b, buf.Bytes())
|
|
return buf.Len(), nil
|
|
}
|
|
bme280.Start()
|
|
hum, err := bme280.Humidity()
|
|
gobottest.Assert(t, err, nil)
|
|
gobottest.Assert(t, hum, float32(51.20179))
|
|
}
|
|
|
|
func TestBME280InitH1Error(t *testing.T) {
|
|
bme280, adaptor := initTestBME280WithStubbedAdaptor()
|
|
adaptor.i2cReadImpl = func(b []byte) (int, error) {
|
|
buf := new(bytes.Buffer)
|
|
// Values produced by dumping data from actual sensor
|
|
if adaptor.written[len(adaptor.written)-1] == bmp280RegCalib00 {
|
|
buf.Write([]byte{126, 109, 214, 102, 50, 0, 54, 149, 220, 213, 208, 11, 64, 30, 166, 255, 249, 255, 172, 38, 10, 216, 189, 16})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bme280RegCalibDigH1 {
|
|
return 0, errors.New("h1 read error")
|
|
} else if adaptor.written[len(adaptor.written)-1] == bme280RegCalibDigH2LSB {
|
|
buf.Write([]byte{112, 1, 0, 19, 1, 0, 30})
|
|
}
|
|
copy(b, buf.Bytes())
|
|
return buf.Len(), nil
|
|
}
|
|
|
|
gobottest.Assert(t, bme280.Start(), errors.New("h1 read error"))
|
|
}
|
|
|
|
func TestBME280InitH2Error(t *testing.T) {
|
|
bme280, adaptor := initTestBME280WithStubbedAdaptor()
|
|
adaptor.i2cReadImpl = func(b []byte) (int, error) {
|
|
buf := new(bytes.Buffer)
|
|
// Values produced by dumping data from actual sensor
|
|
if adaptor.written[len(adaptor.written)-1] == bmp280RegCalib00 {
|
|
buf.Write([]byte{126, 109, 214, 102, 50, 0, 54, 149, 220, 213, 208, 11, 64, 30, 166, 255, 249, 255, 172, 38, 10, 216, 189, 16})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bme280RegCalibDigH1 {
|
|
buf.Write([]byte{75})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bme280RegCalibDigH2LSB {
|
|
return 0, errors.New("h2 read error")
|
|
}
|
|
copy(b, buf.Bytes())
|
|
return buf.Len(), nil
|
|
}
|
|
|
|
gobottest.Assert(t, bme280.Start(), errors.New("h2 read error"))
|
|
}
|
|
|
|
func TestBME280HumidityWriteError(t *testing.T) {
|
|
bme280, adaptor := initTestBME280WithStubbedAdaptor()
|
|
bme280.Start()
|
|
|
|
adaptor.i2cWriteImpl = func([]byte) (int, error) {
|
|
return 0, errors.New("write error")
|
|
}
|
|
hum, err := bme280.Humidity()
|
|
gobottest.Assert(t, err, errors.New("write error"))
|
|
gobottest.Assert(t, hum, float32(0.0))
|
|
}
|
|
|
|
func TestBME280HumidityReadError(t *testing.T) {
|
|
bme280, adaptor := initTestBME280WithStubbedAdaptor()
|
|
bme280.Start()
|
|
|
|
adaptor.i2cReadImpl = func([]byte) (int, error) {
|
|
return 0, errors.New("read error")
|
|
}
|
|
hum, err := bme280.Humidity()
|
|
gobottest.Assert(t, err, errors.New("read error"))
|
|
gobottest.Assert(t, hum, float32(0.0))
|
|
}
|
|
|
|
func TestBME280HumidityNotEnabled(t *testing.T) {
|
|
bme280, adaptor := initTestBME280WithStubbedAdaptor()
|
|
adaptor.i2cReadImpl = func(b []byte) (int, error) {
|
|
buf := new(bytes.Buffer)
|
|
// Values produced by dumping data from actual sensor
|
|
if adaptor.written[len(adaptor.written)-1] == bmp280RegCalib00 {
|
|
buf.Write([]byte{126, 109, 214, 102, 50, 0, 54, 149, 220, 213, 208, 11, 64, 30, 166, 255, 249, 255, 172, 38, 10, 216, 189, 16})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bme280RegCalibDigH1 {
|
|
buf.Write([]byte{75})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bmp280RegTempData {
|
|
buf.Write([]byte{129, 0, 0})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bme280RegCalibDigH2LSB {
|
|
buf.Write([]byte{112, 1, 0, 19, 1, 0, 30})
|
|
} else if adaptor.written[len(adaptor.written)-1] == bme280RegHumidityMSB {
|
|
buf.Write([]byte{0x80, 0x00})
|
|
}
|
|
copy(b, buf.Bytes())
|
|
return buf.Len(), nil
|
|
}
|
|
bme280.Start()
|
|
hum, err := bme280.Humidity()
|
|
gobottest.Assert(t, err, errors.New("Humidity disabled"))
|
|
gobottest.Assert(t, hum, float32(0.0))
|
|
}
|
|
|
|
func TestBME280_initializationBME280(t *testing.T) {
|
|
bme280, adaptor := initTestBME280WithStubbedAdaptor()
|
|
readCallCounter := 0
|
|
adaptor.i2cReadImpl = func(b []byte) (int, error) {
|
|
readCallCounter++
|
|
if readCallCounter == 1 {
|
|
// Simulate returning 24 bytes for the coefficients (register bmp280RegCalib00)
|
|
return 24, nil
|
|
}
|
|
if readCallCounter == 2 {
|
|
// Simulate returning a single byte for the hc.h1 value (register bme280RegCalibDigH1)
|
|
return 1, nil
|
|
}
|
|
if readCallCounter == 3 {
|
|
// Simulate returning 7 bytes for the coefficients (register bme280RegCalibDigH2LSB)
|
|
return 7, nil
|
|
}
|
|
if readCallCounter == 4 {
|
|
// Simulate returning 1 byte for the cmr (register bmp280RegControl)
|
|
return 1, nil
|
|
}
|
|
return 0, nil
|
|
}
|
|
gobottest.Assert(t, bme280.Start(), nil)
|
|
}
|