Example #1
0
func main() {
	flag.Parse()

	if err := embd.InitI2C(); err != nil {
		panic(err)
	}
	defer embd.CloseI2C()

	bus := embd.NewI2CBus(1)

	d := pca9685.New(bus, 0x41)
	d.Freq = 50
	defer d.Close()

	pwm := d.ServoChannel(0)

	servo := servo.New(pwm)

	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt, os.Kill)

	turnTimer := time.Tick(500 * time.Millisecond)
	left := true

	servo.SetAngle(90)
	defer func() {
		servo.SetAngle(90)
	}()

	for {
		select {
		case <-turnTimer:
			left = !left
			switch left {
			case true:
				servo.SetAngle(70)
			case false:
				servo.SetAngle(110)
			}
		case <-c:
			return
		}
	}
}
Example #2
0
func main() {
	flag.Parse()

	sb := servoblaster.New()
	defer sb.Close()

	pwm := sb.Channel(0)

	servo := servo.New(pwm)

	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt, os.Kill)

	turnTimer := time.Tick(500 * time.Millisecond)
	left := true

	servo.SetAngle(90)
	defer func() {
		servo.SetAngle(90)
	}()

	for {
		select {
		case <-turnTimer:
			left = !left
			var err error
			switch left {
			case true:
				err = servo.SetAngle(45)
			case false:
				err = servo.SetAngle(135)
			}
			if err != nil {
				panic(err)
			}
		case <-c:
			return
		}
	}
}
Example #3
0
func main() {
	flag.Parse()

	embd.InitGPIO()
	defer embd.CloseGPIO()

	pwm, err := embd.NewPWMPin("P9_14")
	if err != nil {
		panic(err)
	}
	defer pwm.Close()

	servo := servo.New(pwm)

	quit := make(chan os.Signal, 1)
	signal.Notify(quit, os.Interrupt, os.Kill)

	turnTimer := time.Tick(500 * time.Millisecond)
	left := true

	servo.SetAngle(90)
	defer func() {
		servo.SetAngle(90)
	}()

	for {
		select {
		case <-turnTimer:
			left = !left
			switch left {
			case true:
				servo.SetAngle(70)
			case false:
				servo.SetAngle(110)
			}
		case <-quit:
			return
		}
	}
}
Example #4
0
func main() {
	glog.Info("main: starting up")

	flag.Parse()

	var car Car = NullCar
	if !*fakeCar {
		if err := embd.InitI2C(); err != nil {
			panic(err)
		}
		defer embd.CloseI2C()

		bus := embd.NewI2CBus(byte(*i2cBusNo))

		var cam Camera = NullCamera
		if !*fakeCam {
			cam = NewCamera(*camWidth, *camHeight, *camTurnImage, *camFps)
		}
		defer cam.Close()
		cam.Run()

		var comp Compass = NullCompass
		if !*fakeCompass {
			comp = NewCompass(bus)
		}
		defer comp.Close()

		var rf RangeFinder = NullRangeFinder
		if !*fakeRangeFinder {
			thermometer := bmp180.New(bus)
			defer thermometer.Close()

			if err := embd.InitGPIO(); err != nil {
				panic(err)
			}
			defer embd.CloseGPIO()

			echoPin, err := embd.NewDigitalPin(*echoPinNumber)
			if err != nil {
				panic(err)
			}
			triggerPin, err := embd.NewDigitalPin(*triggerPinNumber)
			if err != nil {
				panic(err)
			}

			rf = NewRangeFinder(echoPin, triggerPin, thermometer)
		}
		defer rf.Close()

		var fw FrontWheel = NullFrontWheel
		if !*fakeFrontWheel {
			sb := servoblaster.New()
			defer sb.Close()

			pwm := sb.Channel(*sbChannel)

			servo := servo.New(pwm)
			fw = &frontWheel{servo}
		}
		defer fw.Turn(0)

		var engine Engine = NullEngine
		if !*fakeEngine {
			ctrl := pca9685.New(bus, 0x41)
			defer ctrl.Close()

			pwm := ctrl.AnalogChannel(15)

			engine = NewEngine(pwm)
		}
		defer engine.Stop()

		var gyro Gyroscope = NullGyroscope
		if !*fakeGyro {
			gyro = NewGyroscope(bus, l3gd20.R250DPS)
		}
		defer gyro.Close()

		car = NewCar(bus, cam, comp, rf, gyro, fw, engine)
	}
	defer car.Close()

	ws := NewWebServer(car)
	ws.Run()

	quit := make(chan os.Signal, 1)
	signal.Notify(quit, os.Interrupt, os.Kill)
	<-quit

	glog.Info("main: all done")
}