hybridgroup.gobot/platforms/gpio/analog_sensor_driver.go

package gpio

import (
	"github.com/hybridgroup/gobot"
)

type AnalogSensorDriver struct {
	gobot.Driver
}

func NewAnalogSensorDriver(a AnalogReader, name string, pin string) *AnalogSensorDriver {
	d := &AnalogSensorDriver{
		Driver: *gobot.NewDriver(
			name,
			"AnalogSensorDriver",
			a.(gobot.AdaptorInterface),
			pin,
		),
	}

	d.AddEvent("data")
	d.AddCommand("Read", func(params map[string]interface{}) interface{} {
		return d.Read()
	})

	return d
}

func (a *AnalogSensorDriver) adaptor() AnalogReader {
	return a.Adaptor().(AnalogReader)
}

func (a *AnalogSensorDriver) Start() bool {
	value := 0
	gobot.Every(a.Interval(), func() {
		newValue := a.Read()
		if newValue != value && newValue != -1 {
			value = newValue
			gobot.Publish(a.Event("data"), value)
		}
	})
	return true
}
func (a *AnalogSensorDriver) Init() bool { return true }
func (a *AnalogSensorDriver) Halt() bool { return true }

func (a *AnalogSensorDriver) Read() int {
	return a.adaptor().AnalogRead(a.Pin())
}