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gpiocdev-eventhandlers

This repository aims to provide handlers for the go-gpiocdev Library's gpiocdev.WithEventHandler line option.

It's still under development with two sensor added to the library without tests are performed.

Usage

  • Each handler is a stuct that implements IEventHandlers generic interface.
  • Measure() method is used as the main handler that does the logic/calculation/measurement for the sensor data. This should be passed to WithEeventHandler() method.
  • Subscribe() is for listening measurement if immediate responses are needed when a measurement is done. It's a channel type.
  • CloseChannels() is the method that closes the above channel. Best to be called when usage is no more required.
  • GetMeasurement() is the method that return the latest measurement.

A simple example might look like the following:

lfs :=factory.InitializeEventHandlerFor(sensors.FLOW_SENSOR, "gpiochip0", "GPIO4", 0.002222222)
defer lfs.CloseChannels()

gpiocdev.RequestLine("gpiochip0", pin, gpiocdev.WithPullUp, gpiocdev.WithBothEdges, gpiocdev.WithEventHandler(lfs.Measure))

for {
    fmt.Printf("%f Liters Flowed",<-lfs.Subscribe())
}

Please refer to the Examples section to see more details examples for each sensor.

Examples

Sensor ID(sensors.go) Image Example
Water Flow Sensor 0 WaterFlowSensor example
Photocell Sensor 1 Photocell example