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

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