gobot.io/x/gobot/v2@v2.1.0/examples/firmata_led_brightness_with_analog_input.go (about)

     1  //go:build example
     2  // +build example
     3  
     4  //
     5  // Do not build by default.
     6  
     7  /*
     8   How to run
     9   Pass serial port to use as the first param:
    10  
    11  	go run examples/firmata_led_brightness_with_analog_input.go /dev/ttyACM0
    12  */
    13  
    14  package main
    15  
    16  import (
    17  	"fmt"
    18  	"os"
    19  
    20  	"gobot.io/x/gobot/v2"
    21  	"gobot.io/x/gobot/v2/drivers/aio"
    22  	"gobot.io/x/gobot/v2/drivers/gpio"
    23  	"gobot.io/x/gobot/v2/platforms/firmata"
    24  )
    25  
    26  func main() {
    27  	firmataAdaptor := firmata.NewAdaptor(os.Args[1])
    28  	sensor := aio.NewAnalogSensorDriver(firmataAdaptor, "0")
    29  	led := gpio.NewLedDriver(firmataAdaptor, "3")
    30  
    31  	work := func() {
    32  		sensor.On(aio.Data, func(data interface{}) {
    33  			brightness := uint8(
    34  				gobot.ToScale(gobot.FromScale(float64(data.(int)), 0, 1024), 0, 255),
    35  			)
    36  			fmt.Println("sensor", data)
    37  			fmt.Println("brightness", brightness)
    38  			led.Brightness(brightness)
    39  		})
    40  	}
    41  
    42  	robot := gobot.NewRobot("sensorBot",
    43  		[]gobot.Connection{firmataAdaptor},
    44  		[]gobot.Device{sensor, led},
    45  		work,
    46  	)
    47  
    48  	robot.Start()
    49  }