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

     1  //go:build example
     2  // +build example
     3  
     4  //
     5  // Do not build by default.
     6  
     7  package main
     8  
     9  import (
    10  	"fmt"
    11  	"time"
    12  
    13  	"gobot.io/x/gobot/v2"
    14  	"gobot.io/x/gobot/v2/drivers/gpio"
    15  	"gobot.io/x/gobot/v2/platforms/intel-iot/joule"
    16  )
    17  
    18  func main() {
    19  	e := joule.NewAdaptor()
    20  	led := gpio.NewLedDriver(e, "J12_26")
    21  
    22  	work := func() {
    23  		brightness := uint8(0)
    24  		fadeAmount := uint8(15)
    25  
    26  		gobot.Every(100*time.Millisecond, func() {
    27  			err := led.Brightness(brightness)
    28  			if err != nil {
    29  				fmt.Println(err)
    30  			}
    31  			brightness = brightness + fadeAmount
    32  			if brightness == 0 || brightness == 255 {
    33  				fadeAmount = -fadeAmount
    34  			}
    35  		})
    36  	}
    37  
    38  	robot := gobot.NewRobot("pwmBot",
    39  		[]gobot.Connection{e},
    40  		[]gobot.Device{led},
    41  		work,
    42  	)
    43  
    44  	robot.Start()
    45  }