func main() {
flag.Parse()
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
dac := mcp4725.New(bus, 0x62)
defer dac.Close()
stop := make(chan os.Signal, 1)
signal.Notify(stop, os.Interrupt, os.Kill)
for {
select {
case <-stop:
return
default:
voltage := rand.Intn(4096)
if err := dac.SetVoltage(voltage); err != nil {
fmt.Printf("mcp4725: %v\n", err)
}
}
}
}
func main() {
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
sensor := tmp006.New(bus, 0x40)
if status, err := sensor.Present(); err != nil || !status {
fmt.Println("tmp006: not found")
fmt.Println(err)
return
}
defer sensor.Close()
sensor.Start()
stop := make(chan os.Signal, 1)
signal.Notify(stop, os.Interrupt, os.Kill)
for {
select {
case temp := <-sensor.ObjTemps():
fmt.Printf("tmp006: got obj temp %.2f\n", temp)
case temp := <-sensor.RawDieTemps():
fmt.Printf("tmp006: got die temp %.2f\n", temp)
case <-stop:
return
}
}
}
func main() {
flag.Parse()
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
controller, err := hd44780.NewI2C(
bus,
0x20,
hd44780.PCF8574PinMap,
hd44780.RowAddress20Col,
hd44780.TwoLine,
hd44780.BlinkOn,
)
if err != nil {
panic(err)
}
display := characterdisplay.New(controller, 20, 4)
defer display.Close()
display.Clear()
display.Message("Hello, world!\n@embd | characterdisplay")
time.Sleep(10 * time.Second)
display.BacklightOff()
}
func main() {
flag.Parse()
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
baro := bmp180.New(bus)
defer baro.Close()
for {
temp, err := baro.Temperature()
if err != nil {
panic(err)
}
fmt.Printf("Temp is %v\n", temp)
pressure, err := baro.Pressure()
if err != nil {
panic(err)
}
fmt.Printf("Pressure is %v\n", pressure)
altitude, err := baro.Altitude()
if err != nil {
panic(err)
}
fmt.Printf("Altitude is %v\n", altitude)
time.Sleep(500 * time.Millisecond)
}
}
func main() {
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
gyro := l3gd20.New(bus, l3gd20.R250DPS)
defer gyro.Close()
gyro.Start()
quit := make(chan os.Signal, 1)
signal.Notify(quit, os.Interrupt, os.Kill)
orientations, err := gyro.Orientations()
if err != nil {
panic(err)
}
timer := time.Tick(250 * time.Millisecond)
for {
select {
case <-timer:
orientation := <-orientations
fmt.Printf("x: %v, y: %v, z: %v\n", orientation.X, orientation.Y, orientation.Z)
case <-quit:
return
}
}
}
func main() {
sig := make(chan os.Signal, 1)
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
baro := bmp085.New(bus)
defer baro.Close()
// Draw the outline
pcd8544.LCDdrawrect(6-1, 6-1, pcd8544.LCDWIDTH-6, pcd8544.LCDHEIGHT-6, pcd8544.BLACK)
// date string changes slowly
var (
date_str string
temp_str string
)
signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM)
go func() {
s := <-sig
fmt.Println(s)
gpio_cleanup()
os.Exit(0)
}()
keep_running := true
for keep_running {
// Get temperature
temp, err := baro.Temperature()
if err != nil {
gpio_cleanup()
panic(err)
}
_temp_str := fmt.Sprint(strconv.FormatFloat(temp, 'f', 2, 64), " C")
time_str, _date_str := get_time()
pcd8544.LCDdrawstring(20, 12, time_str)
if date_str != _date_str {
date_str = _date_str
pcd8544.LCDdrawstring(18, 24, date_str)
}
if temp_str != _temp_str {
temp_str = _temp_str
pcd8544.LCDdrawstring(20, 36, temp_str)
}
pcd8544.LCDdisplay()
// wait for 1 sec
time.Sleep(time.Second)
}
}
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
}
}
}
func main() {
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
mems := lsm303.New(bus)
defer mems.Close()
for {
heading, err := mems.Heading()
if err != nil {
panic(err)
}
fmt.Printf("Heading is %v\n", heading)
time.Sleep(500 * time.Millisecond)
}
}
func main() {
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
sensor := bh1750fvi.New(bh1750fvi.High, bus)
defer sensor.Close()
for {
lighting, err := sensor.Lighting()
if err != nil {
panic(err)
}
fmt.Printf("Lighting is %v lx\n", lighting)
time.Sleep(500 * time.Millisecond)
}
}
func main() {
flag.Parse()
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
hd, err := hd44780.NewI2C(
bus,
0x20,
hd44780.PCF8574PinMap,
hd44780.RowAddress20Col,
hd44780.TwoLine,
hd44780.BlinkOn,
)
if err != nil {
panic(err)
}
defer hd.Close()
hd.Clear()
message := "Hello, world!"
bytes := []byte(message)
for _, b := range bytes {
hd.WriteChar(b)
}
hd.SetCursor(0, 1)
message = "@embd | hd44780"
bytes = []byte(message)
for _, b := range bytes {
hd.WriteChar(b)
}
time.Sleep(10 * time.Second)
hd.BacklightOff()
}
func main() {
flag.Parse()
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
pca9685 := pca9685.New(bus, 0x41)
pca9685.Freq = 1000
defer pca9685.Close()
if err := pca9685.SetPwm(15, 0, 2000); err != nil {
panic(err)
}
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, os.Kill)
timer := time.Tick(2 * time.Second)
sleeping := false
for {
select {
case <-timer:
sleeping = !sleeping
if sleeping {
pca9685.Sleep()
} else {
pca9685.Wake()
}
case <-c:
return
}
}
}
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")
}
func main() {
var zoneFlag zoneslice
var timeout time.Duration
var verbose bool
var repeat uint64
flag.DurationVar(&timeout, "timeout", 10*time.Second, "amount of time to run each zone")
flag.Uint64Var(&repeat, "repeat", 1, "how many times to repeat the zone list")
flag.BoolVar(&verbose, "verbose", false, "whether or not to be verbose")
flag.Var(&zoneFlag, "zone", "comma-separated list of zones to use")
flag.Parse()
if len(zoneFlag) == 0 {
fmt.Fprintf(os.Stderr, "No zone specified\n")
flag.PrintDefaults()
os.Exit(1)
}
if timeout == 0 && len(zoneFlag) > 1 {
fmt.Fprintf(os.Stderr, "No timeout with multiple zones\n")
os.Exit(1)
}
if repeat == 0 {
fmt.Fprintf(os.Stderr, "Nothing to do!\n")
os.Exit(1)
}
if repeat > 1 && len(zoneFlag) == 1 {
fmt.Fprintf(os.Stderr, "Repeating only one zone\n")
os.Exit(1)
}
if timeout > 0 && timeout < 5*time.Second {
fmt.Fprintf(os.Stderr, "Increasing timeout to 5s\n")
timeout = 5 * time.Second
}
if verbose {
fmt.Printf("Zones: %v\n", zoneFlag)
fmt.Printf("Repeating: %d\n", repeat)
fmt.Printf("Timeout: %v\n", timeout)
}
if err := embd.InitI2C(); err != nil {
panic(err)
}
defer embd.CloseI2C()
bus := embd.NewI2CBus(1)
defer bus.Close()
pcf8574 := pcf8574.New(bus, 0x20)
defer pcf8574.SetByte(^byte(0))
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, os.Kill)
timer := time.Tick(timeout)
for i := uint64(0); i < repeat; i++ {
for _, zone := range zoneFlag {
input := ^(byte(1) << (zone - 1))
pcf8574.SetByte(input)
if verbose {
fmt.Printf("Zone: %d Input: %08b\n", zone, input)
}
select {
case <-timer:
continue
case <-c:
return
}
}
}
}