gobot.io/x/gobot@v1.16.0/examples/gopigo3_led_brightness.go (about)

     1  // +build example
     2  //
     3  // Do not build by default.
     4  
     5  package main
     6  
     7  import (
     8  	"time"
     9  
    10  	"gobot.io/x/gobot"
    11  	"gobot.io/x/gobot/drivers/gpio"
    12  	"gobot.io/x/gobot/platforms/dexter/gopigo3"
    13  	"gobot.io/x/gobot/platforms/raspi"
    14  )
    15  
    16  func main() {
    17  	raspiAdaptor := raspi.NewAdaptor()
    18  	gpg3 := gopigo3.NewDriver(raspiAdaptor)
    19  	led := gpio.NewGroveLedDriver(gpg3, "AD_1_1")
    20  
    21  	work := func() {
    22  		brightness := uint8(0)
    23  		fadeAmount := uint8(15)
    24  
    25  		gobot.Every(100*time.Millisecond, func() {
    26  			led.Brightness(brightness)
    27  			brightness = brightness + fadeAmount
    28  			if brightness == 0 || brightness == 255 {
    29  				fadeAmount = -fadeAmount
    30  			}
    31  		})
    32  	}
    33  
    34  	robot := gobot.NewRobot("gopigo3pwm",
    35  		[]gobot.Connection{raspiAdaptor},
    36  		[]gobot.Device{gpg3, led},
    37  		work,
    38  	)
    39  
    40  	robot.Start()
    41  }