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all: introduce a temperature type

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This type should be used whenever a sensor (or actuator?) works with a
temperature. For example, this commit changes the signature:

    ReadTemperature() (int32, error)

to the following:

    ReadTemperature() (drivers.Temperature, error)

I believe this is much clearer in intent. It also makes it trivial to
introduce common conversions. For example, there are already Celsius()
and Fahrenheit() methods to convert to the given units, as a floating
point. More units could be added as needed, for example a CelsiusInt().
This commit is contained in:
Ayke van Laethem
2021-10-21 23:17:32 +02:00
parent 3fe3fc64e4
commit 6763521eff
31 changed files with 106 additions and 104 deletions
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adt7410/adt7410.go
+2 -13
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@@ -60,19 +60,8 @@ func (d *Device) Connected() bool {
}
// ReadTemperature returns the temperature in celsius milli degrees (°C/1000)
func (d *Device) ReadTemperature() (temperature int32, err error) {
return (int32(d.readUint16(RegTempValueMSB)) * 1000) / 128, nil
}
// ReadTempC returns the value in the temperature value register, in Celsius.
func (d *Device) ReadTempC() float32 {
t := d.readUint16(RegTempValueMSB)
return float32(int(t)) / 128.0
}
// ReadTempF returns the value in the temperature value register, in Fahrenheit.
func (d *Device) ReadTempF() float32 {
return d.ReadTempC()*1.8 + 32.0
func (d *Device) ReadTemperature() (temperature drivers.Temperature, err error) {
return (drivers.Temperature(d.readUint16(RegTempValueMSB)) * 1000) / 128, nil
}
func (d *Device) writeByte(reg uint8, data byte) {