func main() {
flag.Parse()
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
led, err := embd.NewDigitalPin(10)
if err != nil {
panic(err)
}
defer led.Close()
if err := led.SetDirection(embd.Out); err != nil {
panic(err)
}
if err := led.Write(embd.High); err != nil {
panic(err)
}
time.Sleep(1 * time.Second)
if err := led.SetDirection(embd.In); err != nil {
panic(err)
}
}
func main() {
rowPins := []int{4, 17, 27, 22}
colPins := []int{23, 24, 25}
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
keypad, err := matrix4x3.New(rowPins, colPins)
if err != nil {
panic(err)
}
for {
key, err := keypad.PressedKey()
if err != nil {
panic(err)
}
if key != matrix4x3.KNone {
fmt.Printf("Key Pressed = %v\n", key)
}
time.Sleep(500 * time.Millisecond)
}
}
func main() {
flag.Parse()
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
btn, err := embd.NewDigitalPin(10)
if err != nil {
panic(err)
}
defer btn.Close()
if err := btn.SetDirection(embd.In); err != nil {
panic(err)
}
btn.ActiveLow(false)
quit := make(chan interface{})
err = btn.Watch(embd.EdgeFalling, func(btn embd.DigitalPin) {
quit <- btn
})
if err != nil {
panic(err)
}
fmt.Printf("Button %v was pressed.\n", <-quit)
}
func main() {
flag.Parse()
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
pin, err := embd.NewDigitalPin(7)
if err != nil {
panic(err)
}
defer pin.Close()
fluidSensor := watersensor.New(pin)
for {
wet, err := fluidSensor.IsWet()
if err != nil {
panic(err)
}
if wet {
glog.Info("bot is dry")
} else {
glog.Info("bot is Wet")
}
time.Sleep(500 * time.Millisecond)
}
}
func (g *GPIO) Close() error {
// close all the pins we have open if any
for _, pinState := range g.pinStates {
if pinState.Pin != nil {
switch pinObj := pinState.Pin.(type) {
case embd.DigitalPin:
pinObj.Close()
case embd.PWMPin:
pinObj.Close()
case BlasterPin:
pinObj.Close()
}
}
}
// if its a raspberry pi close pi-blaster too
host, _, err := embd.DetectHost()
if err != nil {
return err
}
if host == embd.HostRPi {
CloseBlaster()
}
err = embd.CloseGPIO()
if err != nil {
return err
}
return nil
}
func main() {
embd.InitGPIO()
defer embd.CloseGPIO()
embd.SetDirection(10, embd.Out)
embd.DigitalWrite(10, embd.High)
}
func main() {
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
pin, err := embd.NewAnalogPin(0)
if err != nil {
panic(err)
}
defer pin.Close()
quit := make(chan os.Signal, 1)
signal.Notify(quit, os.Interrupt, os.Kill)
defer signal.Stop(quit)
for {
select {
case <-time.After(100 * time.Millisecond):
val, err := pin.Read()
if err != nil {
panic(err)
}
fmt.Printf("reading: %v\n", val)
case <-quit:
return
}
}
}
func main() {
embd.InitGPIO()
defer embd.CloseGPIO()
val, _ := embd.AnalogRead(0)
fmt.Printf("Reading: %v\n", val)
}
func main() {
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
echoPin, err := embd.NewDigitalPin(10)
if err != nil {
panic(err)
}
triggerPin, err := embd.NewDigitalPin(9)
if err != nil {
panic(err)
}
rf := us020.New(echoPin, triggerPin, nil)
defer rf.Close()
for {
distance, err := rf.Distance()
if err != nil {
panic(err)
}
fmt.Printf("Distance is %v\n", distance)
time.Sleep(500 * time.Millisecond)
}
}
func (b *buttons) Close() {
log.Println("Closing buttons...")
for _, gpioBtn := range b.gpioBtns {
gpioBtn.pin.Close()
}
log.Println("Closing GPIO...")
embd.CloseGPIO()
}
func hardware() {
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
if err := embd.InitSPI(); err != nil {
panic(err)
}
defer embd.CloseSPI()
lights, err := OpenLights()
if err != nil {
panic(err)
}
defer lights.Close()
digits, err := OpenDigits()
if err != nil {
panic(err)
}
defer digits.Close()
go digits.Try()
for !quit {
statusMutex.Lock()
yellow := status.Warning
red := status.Critical
redBlink := status.Paging
green := !(red || yellow)
//lastPageTime := status.LastPageTime
statusMutex.Unlock()
var redVal int
var yellowVal int
var greenVal int
if red {
redVal = embd.High
}
if yellow {
yellowVal = embd.High
}
if green {
greenVal = embd.High
}
lights.redPin.Write(redVal)
lights.yellowPin.Write(yellowVal)
lights.greenPin.Write(greenVal)
time.Sleep(500 * time.Millisecond)
if red && redBlink {
lights.redPin.Write(embd.Low)
}
time.Sleep(500 * time.Millisecond)
}
}
func main() {
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
pwm, err := embd.NewPWMPin("P9_14")
if err != nil {
panic(err)
}
defer pwm.Close()
if err := pwm.SetDuty(embd.BBBPWMDefaultPeriod / 2); err != nil {
panic(err)
}
time.Sleep(1 * time.Second)
}
func main() {
fmt.Println("initGpio called")
var err error
if err = embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
s := newServo("P9_14")
for i := 0; i < 18; i++ {
angle := 10 + (10 * i)
fmt.Printf("Setting angle: %v\n", angle)
if err := s.SetAngle(angle); err != nil {
panic(err)
}
time.Sleep(1 * time.Second)
}
}
func main() {
pinnr := flag.Int("pin", -1, "gpio pin number of LED")
flag.Parse()
if *pinnr < 0 {
fmt.Println("Please specify pin which LED is on! Be careful!")
os.Exit(1)
}
panicIf(embd.InitGPIO())
defer embd.CloseGPIO()
l := led.New(*pinnr)
if flag.NArg() <= 0 {
fmt.Println("Blinking Heartbeat1000 pattern till you quit...")
l.Blink(led.Heartbeat1000...)
} else {
pattern := make([]time.Duration, flag.NArg())
for i, s := range flag.Args() {
d, err := time.ParseDuration(s)
if err != nil {
fmt.Println("Error parsing duration:", err)
os.Exit(1)
}
pattern[i] = d
}
fmt.Printf("Blinking your pattern %v till you quit...\n", pattern)
l.Blink(pattern...)
}
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
<-c
fmt.Println("\nBye-bye.")
go func() {
// This we do in case l.Stop() doesn't work.
// It's a way to force quit.
<-c
os.Exit(1)
}()
l.Stop()
}
func main() {
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
led, err := embd.NewDigitalPin(17)
if err != nil {
panic(err)
}
defer led.Close()
if err := led.SetDirection(embd.In); err != nil {
panic(err)
}
state := false
count := 0
for {
pin, err := led.Read()
if err != nil {
panic(err)
}
if pin == 1 {
if state == false {
count++
}
} else {
count = 0
state = false
}
if count >= 3 {
state = true
count = 0
client.SendCounterTick("GAS_1")
}
time.Sleep(10 * time.Millisecond)
}
}
func main() {
flag.Parse()
h, _, err := embd.DetectHost()
if err != nil {
return
}
var pinNo interface{}
switch h {
case embd.HostBBB:
pinNo = "P9_31"
case embd.HostRPi:
pinNo = 10
default:
panic("host not supported (yet :P)")
}
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
led, err := embd.NewDigitalPin(pinNo)
if err != nil {
panic(err)
}
defer led.Close()
if err := led.SetDirection(embd.Out); err != nil {
panic(err)
}
if err := led.Write(embd.High); err != nil {
panic(err)
}
time.Sleep(1 * time.Second)
if err := led.SetDirection(embd.In); err != nil {
panic(err)
}
}
func main() {
flag.Parse()
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
data, err := embd.NewDigitalPin(4)
if err != nil {
panic(err)
}
defer data.Close()
clock, err := embd.NewDigitalPin(3)
if err != nil {
panic(err)
}
defer clock.Close()
sensor := sht1x.New(data, clock)
quit := make(chan os.Signal, 1)
signal.Notify(quit, os.Interrupt, os.Kill)
defer signal.Stop(quit)
ticker := time.NewTicker(2 * time.Second)
defer ticker.Stop()
for {
select {
case <-ticker.C:
m, err := sensor.Measure()
if err != nil {
fmt.Printf("err: %v\n", err)
}
fmt.Printf("Temperature: %.1fC, Relative Humidity: %.1f%%, Dew Point: %.1fC\n", m.Temperature, m.RelativeHumidity, m.DewPoint)
case <-quit:
return
}
}
}
func main() {
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
if err := embd.SetDirection(10, embd.Out); err != nil {
panic(err)
}
if err := embd.DigitalWrite(10, embd.High); err != nil {
panic(err)
}
time.Sleep(1 * time.Second)
if err := embd.SetDirection(10, embd.In); err != nil {
panic(err)
}
}
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
}
}
}
func main() {
flag.Parse()
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
echoPin, err := embd.NewDigitalPin("P9_21")
if err != nil {
panic(err)
}
triggerPin, err := embd.NewDigitalPin("P9_22")
if err != nil {
panic(err)
}
rf := us020.New(echoPin, triggerPin, nil)
defer rf.Close()
quit := make(chan os.Signal, 1)
signal.Notify(quit, os.Interrupt, os.Kill)
for {
select {
default:
distance, err := rf.Distance()
if err != nil {
panic(err)
}
fmt.Printf("Distance is %v\n", distance)
time.Sleep(500 * time.Millisecond)
case <-quit:
return
}
}
}
Short: "monitor temperature and humidity",
Long: `Pimon monitors the temperature and humidity and warns you
if if is not in the safe range defined by Larrivee.
If pimon is run with default options and without any specific command,
it will read all the configuration files it finds in the XDG config path.
It will also store any measurements in XDG_DATA_HOME/pimon/th.csv.
`,
Run: func(cmd *cobra.Command, args []string) {
Conf.Assert()
exitIf(pimonLock())
defer pimonUnlock()
exitIf(embd.InitGPIO())
defer embd.CloseGPIO()
done := make(chan struct{})
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
nl := &WarningLED{led.New(Conf.PinWarningLED), guitar.Low}
csv, err := NewCSVPersister(xdg.UserData(databaseSuffix))
if err != nil {
log.Error("error persisting: ", err)
return
}
m, err := NewMonitor(csv, 0.1)
if err != nil {
log.Error("error reading persistent file: ", err)
return
func (r *RPi) Close() {
embd.CloseGPIO()
}
func main() {
stepDelay := flag.Int("step-delay", 10, "milliseconds between steps")
flag.Parse()
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
// Physical pins 11,15,16,18 on rasp pi
// GPIO17,GPIO22,GPIO23,GPIO24
stepPinNums := []int{17, 22, 23, 24}
stepPins := make([]embd.DigitalPin, 4)
for i, pinNum := range stepPinNums {
pin, err := embd.NewDigitalPin(pinNum)
if err != nil {
panic(err)
}
defer pin.Close()
if err := pin.SetDirection(embd.Out); err != nil {
panic(err)
}
if err := pin.Write(embd.Low); err != nil {
panic(err)
}
defer pin.SetDirection(embd.In)
stepPins[i] = pin
}
// Define sequence described in manufacturer's datasheet
seq := [][]int{
[]int{1, 0, 0, 0},
[]int{1, 1, 0, 0},
[]int{0, 1, 0, 0},
[]int{0, 1, 1, 0},
[]int{0, 0, 1, 0},
[]int{0, 0, 1, 1},
[]int{0, 0, 0, 1},
[]int{1, 0, 0, 1},
}
stepCount := len(seq) - 1
stepDir := 2 // Set to 1 or 2 for clockwise, -1 or -2 for counter-clockwise
quit := make(chan os.Signal, 1)
signal.Notify(quit, os.Interrupt, os.Kill)
defer signal.Stop(quit)
// Start main loop
ticker := time.NewTicker(time.Duration(*stepDelay) * time.Millisecond)
defer ticker.Stop()
var stepCounter int
for {
select {
case <-ticker.C:
// set pins to appropriate values for given position in the sequence
for i, pin := range stepPins {
if seq[stepCounter][i] != 0 {
fmt.Printf("Enable pin %d, step %d\n", i, stepCounter)
if err := pin.Write(embd.High); err != nil {
panic(err)
}
} else {
if err := pin.Write(embd.Low); err != nil {
panic(err)
}
}
}
stepCounter += stepDir
// If we reach the end of the sequence start again
if stepCounter >= stepCount {
stepCounter = 0
} else if stepCounter < 0 {
stepCounter = stepCount
}
case <-quit:
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() {
if err := embd.InitGPIO(); err != nil {
panic(err)
}
defer embd.CloseGPIO()
btn17, err := embd.NewDigitalPin(17)
if err != nil {
panic(err)
}
btn18, err := embd.NewDigitalPin(18)
if err != nil {
panic(err)
}
defer btn17.Close()
defer btn18.Close()
if err := btn17.SetDirection(embd.In); err != nil {
panic(err)
}
if err := btn18.SetDirection(embd.In); err != nil {
panic(err)
}
btn17.ActiveLow(false)
btn18.ActiveLow(false)
motion := make(chan embd.DigitalPin)
err = btn17.Watch(embd.EdgeBoth, func(btn embd.DigitalPin) {
motion <- btn
})
if err != nil {
panic(err)
}
err = btn18.Watch(embd.EdgeBoth, func(btn embd.DigitalPin) {
motion <- btn
})
if err != nil {
panic(err)
}
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
fmt.Println("listening...")
dur, _ := time.ParseDuration("-5m")
onTime := time.Now().Add(dur)
for {
select {
case <-c:
fmt.Println("bye")
return
case btn := <-motion:
direction := getDirection(btn.N())
v, _ := btn.Read()
if v == 0 {
log.Printf("Motion stopped from %s.\n", direction)
continue
}
log.Printf("Motion detected from %s.\n", direction)
if time.Since(onTime).Seconds() > 300 {
turnScreenOn()
onTime = time.Now()
}
}
}
}
func (p *PCD8544) Close() {
p.Clear()
p.setPower(false)
embd.CloseGPIO()
}
func (g *gpio) Close() {
g.pin.Close()
embd.CloseGPIO()
}
