gobot.io/x/gobot@v1.16.0/examples/firmata_led_brightness_with_analog_input.go (about)

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