func main() {
// get a pin by name. You could also just use the logical pin number, but this is
// more readable. On BeagleBone, USR0 is an on-board LED.
ledPin, err := hwio.GetPin("USR1")
// Generally we wouldn't expect an error, but perhaps someone is running this a
if err != nil {
fmt.Println(err)
os.Exit(1)
}
// Set the mode of the pin to output. This will return an error if, for example,
// we were trying to set an analog input to an output.
err = hwio.PinMode(ledPin, hwio.OUTPUT)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
// Run the blink forever
for {
hwio.DigitalWrite(ledPin, hwio.HIGH)
hwio.Delay(1000)
hwio.DigitalWrite(ledPin, hwio.LOW)
hwio.Delay(1000)
}
}
func readButton(name string, buttonPin hwio.Pin, ledPin hwio.Pin) {
//value readed from button, initially set to 0, because the button will not pressed
oldValue := 0
t1 := time.Now()
// loop
for {
// Read the button value
value, e := hwio.DigitalRead(buttonPin)
if e != nil {
panic(e)
}
t1 = time.Now() // time at this point
// Did value change?
if value != oldValue {
fmt.Printf("[%s] %v (%d)\n", name, t1.Sub(t0), value)
oldValue = value
// Write the value to the led.
if value == 1 {
hwio.DigitalWrite(ledPin, hwio.HIGH)
} else {
hwio.DigitalWrite(ledPin, hwio.LOW)
}
}
}
}
func readTracker(name string, trackerPin hwio.Pin) {
oldValue := 0 //value readed from tracker, initially set to 0, because the tracker was innactive
timeAction := time.Now() // time of the action detected
// loop
for theAcq.getState() != stateSTOPPED {
// Read the tracker value
value, e := hwio.DigitalRead(trackerPin)
if e != nil {
panic(e)
}
//timeActionOld=timeAction //store the last time
timeAction = time.Now() // time at this point
// Did value change?
if (value == 1) && (value != oldValue) {
if theAcq.getState() != statePAUSED {
dataString := fmt.Sprintf("[%s], %v, %d\n",
name, timeAction.Sub(theAcq.getTime0()), value)
log.Println(dataString)
theAcq.outputFile.WriteString(dataString)
}
// Write the value to the led indicating somewhat is happened
if value == 1 {
hwio.DigitalWrite(theOshi.actionLed, hwio.HIGH)
} else {
hwio.DigitalWrite(theOshi.actionLed, hwio.LOW)
}
}
oldValue = value
}
}
func blinkingLed(ledPin hwio.Pin) int {
// loop
for {
hwio.DigitalWrite(ledPin, hwio.HIGH)
hwio.Delay(500)
hwio.DigitalWrite(ledPin, hwio.LOW)
hwio.Delay(500)
}
}
func (h *Hardware) SetStrike(state string) {
switch state {
case "unlocked":
hwio.DigitalWrite(h.OutStrike, 1)
case "locked":
hwio.DigitalWrite(h.OutStrike, 0)
default:
panic(errors.New("unknown state"))
}
h.LastOutStrike = state
}
func (h *Hardware) SetLed(state string) {
switch state {
case "on":
hwio.DigitalWrite(h.OutLed, 1)
case "off":
hwio.DigitalWrite(h.OutLed, 0)
default:
panic(errors.New("unknown state"))
}
h.LastOutLed = state
}
func resumeHandler(w http.ResponseWriter, r *http.Request) {
theAcq.setStateRUNNING()
p := &Page{Title: "Start", Body: "State: " + theAcq.state}
hwio.DigitalWrite(theOshi.statusLed, hwio.HIGH)
renderTemplate(w, "start", p)
}
func main() {
//value readed from button, initially set to 0, because the button will not pressed
oldValue := 0
// Set up 'button' as an input
button, e := hwio.GetPinWithMode(buttonPin, hwio.INPUT)
if e != nil {
panic(e)
}
// Set up 'led' as an output
led, e := hwio.GetPinWithMode(ledPin, hwio.OUTPUT)
if e != nil {
panic(e)
}
fmt.Printf("Beginning.....\n")
t0 := time.Now() // time 0
for {
// Read the button value
value, e := hwio.DigitalRead(button)
t1 := time.Now() // time at this point
if e != nil {
panic(e)
}
// Did value change?
if value != oldValue {
fmt.Printf("[%v] %d\n", t1.Sub(t0), value)
oldValue = value
// Write the value to the led.
if value == 1 {
hwio.DigitalWrite(led, hwio.HIGH)
} else {
hwio.DigitalWrite(led, hwio.LOW)
}
}
}
}
func stopHandler(w http.ResponseWriter, r *http.Request) {
theAcq.setStateSTOPPED()
hwio.DigitalWrite(theOshi.statusLed, hwio.LOW)
log.Println("Finnishing.....")
// close the GPIO pins
//hwio.CloseAll()
theAcq.closeOutputFile() //close the file when finished
p := &Page{Title: "Stop", Body: "State: " + theAcq.state}
renderTemplate(w, "stop", p)
//log.Printf("There are %v goroutines", runtime.NumGoroutine())
}
func readTracker(name string, trackerPin hwio.Pin) {
//value readed from tracker, initially set to 0, because the tracker was innactive
oldValue := 0
timeAction := time.Now() // time of the action detected
timeActionOld := time.Now() // time of the action-1 detected
//fmt.Printf("[%s] File: %s\n",name,outputFile)
// loop
for {
// Read the tracker value
value, e := hwio.DigitalRead(trackerPin)
if e != nil {
panic(e)
}
timeActionOld = timeAction //store the last time
timeAction = time.Now() // time at this point
// Did value change?
if value != oldValue {
dataString := fmt.Sprintf("[%s] %v (%v) -> %d\n",
name, timeAction.Sub(t0), timeAction.Sub(timeActionOld), value)
//fmt.Printf("[%s] %v (%v) -> %d\n",
// name,timeAction.Sub(t0),timeAction.Sub(timeActionOld),value)
fmt.Printf(dataString)
outputFile.WriteString(dataString)
oldValue = value
// Write the value to the led indicating somewhat is happened
if value == 1 {
hwio.DigitalWrite(actionLed, hwio.HIGH)
} else {
hwio.DigitalWrite(actionLed, hwio.LOW)
}
}
}
}
func main() {
// Get the pins we're going to use. These are on a beaglebone.
sinPin, _ := hwio.GetPin("P9.11")
sclkPin, _ := hwio.GetPin("P9.12")
xlatPin, _ := hwio.GetPin("P9.13")
gsclkPin, _ := hwio.GetPin("P9.14")
blankPin, _ := hwio.GetPin("P9.15")
fmt.Printf("Pins are: sin=%d, sclk=%d, xlat=%d, gsclk=%d, blank=%d", sinPin, sclkPin, xlatPin, gsclkPin, blankPin)
// Make them all outputs
e := hwio.PinMode(sinPin, hwio.OUTPUT)
if e == nil {
hwio.PinMode(sclkPin, hwio.OUTPUT)
}
if e == nil {
hwio.PinMode(xlatPin, hwio.OUTPUT)
}
if e == nil {
hwio.PinMode(gsclkPin, hwio.OUTPUT)
}
if e == nil {
hwio.PinMode(blankPin, hwio.OUTPUT)
}
if e != nil {
fmt.Printf("Could not initialise pins: %s", e)
return
}
// set clocks low
hwio.DigitalWrite(sclkPin, hwio.LOW)
hwio.DigitalWrite(xlatPin, hwio.LOW)
hwio.DigitalWrite(gsclkPin, hwio.LOW)
// run GS clock in it's own space
hwio.DigitalWrite(blankPin, hwio.HIGH)
hwio.DigitalWrite(blankPin, hwio.LOW)
clockData(gsclkPin)
for b := 0; b < 4096; b++ {
writeData(uint(b), sinPin, sclkPin, xlatPin)
for j := 0; j < 10; j++ {
hwio.DigitalWrite(blankPin, hwio.HIGH)
hwio.DigitalWrite(blankPin, hwio.LOW)
clockData(gsclkPin)
}
// hwio.Delay(100)
}
// hwio.ShiftOut(dataPin, clockPin, uint(data), hwio.MSBFIRST)
}
func main() {
// Get the pins we're going to use. These are on a beaglebone.
dataPin, _ := hwio.GetPin("P8.3") // connected to pin 14
clockPin, _ := hwio.GetPin("P8.4") // connected to pin 11
storePin, _ := hwio.GetPin("P8.5") // connected to pin 12
// Make them all outputs
hwio.PinMode(dataPin, hwio.OUTPUT)
hwio.PinMode(clockPin, hwio.OUTPUT)
hwio.PinMode(storePin, hwio.OUTPUT)
data := 0
// Set the initial state of the clock and store pins to low. These both
// trigger on the rising edge.
hwio.DigitalWrite(clockPin, hwio.LOW)
hwio.DigitalWrite(storePin, hwio.LOW)
for {
// Shift out 8 bits
hwio.ShiftOut(dataPin, clockPin, uint(data), hwio.MSBFIRST)
// You can use this line instead to clock out 16 bits if you have
// two 74HC595's chained together
// hwio.ShiftOutSize(dataPin, clockPin, uint(data), hwio.MSBFIRST, 16)
// Pulse the store pin once
hwio.DigitalWrite(storePin, hwio.HIGH)
hwio.DigitalWrite(storePin, hwio.LOW)
// Poor humans cannot read binary as fast as the machine can display it
hwio.Delay(100)
data++
}
}
func startHandler(w http.ResponseWriter, r *http.Request) {
// manage file depending the previous state
if theAcq.getState() == stateSTOPPED {
theAcq.reopenOutputFile()
log.Printf("Reopen file %s\n", theAcq.outputFile)
}
// sets the new time0 only with a new scenery
if theAcq.getState() == stateNEW {
theAcq.setTime0()
}
theAcq.setStateRUNNING()
//waitTillButtonPushed(buttonA)
p := &Page{Title: "Start", Body: "State: " + theAcq.state}
hwio.DigitalWrite(theOshi.statusLed, hwio.HIGH)
log.Println("Beginning.....")
renderTemplate(w, "start", p)
// launch the trackers
log.Printf("There are %v goroutines", runtime.NumGoroutine())
log.Printf("Launching the Gourutines")
go theAcq.readFromArduino2()
log.Println("Started Arduino")
go readTracker("A", theOshi.trackerA)
log.Println("Started Tracker A")
go readTracker("B", theOshi.trackerB)
log.Println("Started Tracker B")
go readTracker("C", theOshi.trackerC)
log.Println("Started Tracker C")
go readTracker("D", theOshi.trackerD)
log.Println("Started Tracker D")
log.Printf("There are %v goroutines", runtime.NumGoroutine())
}
// val is a 12-bit int
func writeData(val uint, sinPin hwio.Pin, sclkPin hwio.Pin, xlatPin hwio.Pin) {
fmt.Printf("writing data %d\n", val)
bits := 0
mask := uint(1) << 11
for i := 0; i < 16; i++ {
v := val
for j := 0; j < 12; j++ {
if (v & mask) != 0 {
hwio.DigitalWrite(sinPin, hwio.HIGH)
} else {
hwio.DigitalWrite(sinPin, hwio.HIGH)
}
hwio.DigitalWrite(sclkPin, hwio.HIGH)
hwio.DigitalWrite(sclkPin, hwio.LOW)
v = v << 1
bits++
}
}
hwio.DigitalWrite(xlatPin, hwio.HIGH)
hwio.DigitalWrite(xlatPin, hwio.LOW)
fmt.Printf("Wrote %d bits\n", bits)
}
func clockData(gsclkPin hwio.Pin) {
for g := 0; g < 4096; g++ {
hwio.DigitalWrite(gsclkPin, hwio.HIGH)
hwio.DigitalWrite(gsclkPin, hwio.LOW)
}
}
func (c *Car) Motor(v1, v2, v3, v4 int) {
hwio.DigitalWrite(c.pins[in1], v1)
hwio.DigitalWrite(c.pins[in2], v2)
hwio.DigitalWrite(c.pins[in3], v3)
hwio.DigitalWrite(c.pins[in4], v4)
}
func (acq *Acquisition) readFromArduino() {
var register, reg []byte
// operate with the gobal variables theSensorData and theSensorDataInBytes; more speed?
// don't use the first readding ?? I'm not sure about that
reader := bufio.NewReader(acq.serialPort)
// find the begging of an stream of data from the sensors
register, err := reader.ReadBytes('\x24')
if err != nil {
log.Fatal(err)
}
//log.Println(register)
//log.Printf(">>>>>>>>>>>>>>")
// loop
for acq.getState() != stateSTOPPED {
// Read the serial and decode
register = nil
reg = nil
//n, err = s.Read(register)
for len(register) < 38 { // in case of \x24 chars repeted the length will be less than the expected 38 bytes
reg, err = reader.ReadBytes('\x24')
if err != nil {
log.Fatal(err)
}
register = append(register, reg...)
}
receptionTime := time.Now() // time of the action detected
if register[0] == '\x23' { // if first byte is '#', lets decode the stream of bytes in register
//decode the register
theSensorDataInBytes.sincroMicroSecondsInBytes = register[1:5]
buf := bytes.NewReader(theSensorDataInBytes.sincroMicroSecondsInBytes)
err = binary.Read(buf, binary.LittleEndian, &theSensorData.sincroMicroSeconds)
theSensorDataInBytes.sensorMicroSecondsInBytes = register[5:9]
buf = bytes.NewReader(theSensorDataInBytes.sensorMicroSecondsInBytes)
err = binary.Read(buf, binary.LittleEndian, &theSensorData.sensorMicroSeconds)
theSensorDataInBytes.distanceInBytes = register[9:13]
buf = bytes.NewReader(theSensorDataInBytes.distanceInBytes)
err = binary.Read(buf, binary.LittleEndian, &theSensorData.distance)
theSensorDataInBytes.accXInBytes = register[13:17]
buf = bytes.NewReader(theSensorDataInBytes.accXInBytes)
err = binary.Read(buf, binary.LittleEndian, &theSensorData.accX)
theSensorDataInBytes.accYInBytes = register[17:21]
buf = bytes.NewReader(theSensorDataInBytes.accYInBytes)
err = binary.Read(buf, binary.LittleEndian, &theSensorData.accY)
theSensorDataInBytes.accZInBytes = register[21:25]
buf = bytes.NewReader(theSensorDataInBytes.accZInBytes)
err = binary.Read(buf, binary.LittleEndian, &theSensorData.accZ)
theSensorDataInBytes.gyrXInBytes = register[25:29]
buf = bytes.NewReader(theSensorDataInBytes.gyrXInBytes)
err = binary.Read(buf, binary.LittleEndian, &theSensorData.gyrX)
theSensorDataInBytes.gyrYInBytes = register[29:33]
buf = bytes.NewReader(theSensorDataInBytes.gyrYInBytes)
err = binary.Read(buf, binary.LittleEndian, &theSensorData.gyrY)
theSensorDataInBytes.gyrZInBytes = register[33:37]
buf = bytes.NewReader(theSensorDataInBytes.gyrZInBytes)
err = binary.Read(buf, binary.LittleEndian, &theSensorData.gyrZ)
} // if
if acq.getState() != statePAUSED {
//compound the dataline and write to the output
//receptionTime= time.Now() // Alternative: time at this point
dataString := fmt.Sprintf("[%s], %d, %d, %d, %d, %f, %f, %f, %f, %f, %f\n",
"Ard", int64(receptionTime.Sub(theAcq.getTime0())/time.Microsecond),
theSensorData.sincroMicroSeconds, theSensorData.sensorMicroSeconds, theSensorData.distance,
theSensorData.accX, theSensorData.accY, theSensorData.accZ,
theSensorData.gyrX, theSensorData.gyrY, theSensorData.gyrZ)
log.Println(dataString)
acq.outputFile.WriteString(dataString)
}
// Write the value to the led indicating somewhat is happened
hwio.DigitalWrite(theOshi.actionLed, hwio.HIGH)
hwio.DigitalWrite(theOshi.actionLed, hwio.LOW)
}
}
// Run is the block's main loop. Here we listen on the different channels we set up.
func (b *ToDigitalPin) Run() {
var pin hwio.Pin
var pinStr string
var tree *jee.TokenTree
var path string
var err error
for {
select {
case ruleI := <-b.inrule:
path, err = util.ParseString(ruleI, "Path")
if err != nil {
b.Error(err)
continue
}
token, err := jee.Lexer(path)
if err != nil {
b.Error(err)
continue
}
tree, err = jee.Parser(token)
if err != nil {
b.Error(err)
continue
}
if pinStr != "" {
b.Log("closing pin " + pinStr)
err = hwio.ClosePin(pin)
if err != nil {
b.Error(err)
}
}
pinStr, err = util.ParseString(ruleI, "Pin")
if err != nil {
b.Error(err)
continue
}
pin, err = hwio.GetPin(pinStr)
if err != nil {
pinStr = ""
pin = 0
b.Error(err)
continue
}
err = hwio.PinMode(pin, hwio.OUTPUT)
if err != nil {
b.Error(err)
continue
}
case <-b.quit:
// quit the block
err = hwio.ClosePin(pin)
b.Error(err)
return
case c := <-b.queryrule:
// deal with a query request
c <- map[string]interface{}{
"Pin": pinStr,
"Path": path,
}
case msg := <-b.in:
if tree == nil {
continue
}
valI, err := jee.Eval(tree, msg)
if err != nil {
b.Error(err)
continue
}
val, ok := valI.(float64)
if !ok {
log.Println(msg)
b.Error(errors.New("couldn't assert value to a float"))
continue
}
if int(val) == 0 {
hwio.DigitalWrite(pin, hwio.LOW)
} else if int(val) == 1 {
hwio.DigitalWrite(pin, hwio.HIGH)
} else {
b.Error(errors.New("value must be 0 for LOW and 1 for HIGH"))
continue
}
}
}
}
func (acq *Acquisition) readFromArduino2() {
var register, reg []byte
var microSecondsInBytes []byte
var distanceInBytes []byte
var accXInBytes []byte
var accYInBytes []byte
var accZInBytes []byte
var gyrXInBytes []byte
var gyrYInBytes []byte
var gyrZInBytes []byte
var sincro byte
var microSeconds uint32
var distance uint32
var accX float32
var accY float32
var accZ float32
var gyrX float32
var gyrY float32
var gyrZ float32
// don't use the first readding ?? I'm not sure about that
reader := bufio.NewReader(acq.serialPort)
// find the begging of an stream of data from the sensors
register, err := reader.ReadBytes('\x24')
if err != nil {
log.Fatal(err)
}
//log.Println(register)
//log.Printf(">>>>>>>>>>>>>>")
// loop
for acq.getState() != stateSTOPPED {
// Read the serial and decode
register = nil
reg = nil
//n, err = s.Read(register)
for len(register) < 34 { // in case of \x24 chars repeted
reg, err = reader.ReadBytes('\x24')
if err != nil {
log.Fatal(err)
}
register = append(register, reg...)
}
timeAction := time.Now() // time of the action detected
if register[0] == '\x23' || register[0] == '\x64' {
//decode the register
if register[0] == '\x64' {
sincro = 1 //sincro signal
} else {
sincro = 0
}
microSecondsInBytes = register[1:5]
buf := bytes.NewReader(microSecondsInBytes)
err = binary.Read(buf, binary.LittleEndian, µSeconds)
distanceInBytes = register[5:9]
buf = bytes.NewReader(distanceInBytes)
err = binary.Read(buf, binary.LittleEndian, &distance)
accXInBytes = register[9:13]
buf = bytes.NewReader(accXInBytes)
err = binary.Read(buf, binary.LittleEndian, &accX)
accYInBytes = register[13:17]
buf = bytes.NewReader(accYInBytes)
err = binary.Read(buf, binary.LittleEndian, &accY)
accZInBytes = register[17:21]
buf = bytes.NewReader(accZInBytes)
err = binary.Read(buf, binary.LittleEndian, &accZ)
gyrXInBytes = register[21:25]
buf = bytes.NewReader(gyrXInBytes)
err = binary.Read(buf, binary.LittleEndian, &gyrX)
gyrYInBytes = register[25:29]
buf = bytes.NewReader(gyrYInBytes)
err = binary.Read(buf, binary.LittleEndian, &gyrY)
gyrZInBytes = register[29:33]
buf = bytes.NewReader(gyrZInBytes)
err = binary.Read(buf, binary.LittleEndian, &gyrZ)
} // if
if acq.getState() != statePAUSED {
//compound the dataline and write to the output
//timeAction= time.Now() // Alternative: time at this point
dataString := fmt.Sprintf("[%s], %v, %v, %v, %v, %v, %v, %v, %v, %v, %v\n",
"Ard", timeAction.Sub(theAcq.getTime0()),
sincro, microSeconds, distance,
accX, accY, accZ,
gyrX, gyrY, gyrZ)
log.Println(dataString)
acq.outputFile.WriteString(dataString)
}
// Write the value to the led indicating somewhat is happened
hwio.DigitalWrite(theOshi.actionLed, hwio.HIGH)
hwio.DigitalWrite(theOshi.actionLed, hwio.LOW)
}
}
func main() {
// setup
// open file (create if not exists!)
if len(os.Args) != 2 {
fmt.Printf("Usage: %s fileBaseName\n", os.Args[0])
os.Exit(1)
}
t := time.Now()
thisOutputFileName := fmt.Sprintf("%s_%d%02d%02d%02d%02d%02d.csv", os.Args[1], t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), t.Second())
thisOutputFile, e := os.Create(thisOutputFileName)
if e != nil {
panic(e)
}
fmt.Printf("File: %s\n", thisOutputFileName)
outputFile = thisOutputFile
// Set up 'trakers' as inputs
trackerA, e := hwio.GetPinWithMode(trackerAPin, hwio.INPUT)
if e != nil {
panic(e)
}
trackerB, e := hwio.GetPinWithMode(trackerBPin, hwio.INPUT)
if e != nil {
panic(e)
}
trackerC, e := hwio.GetPinWithMode(trackerCPin, hwio.INPUT)
if e != nil {
panic(e)
}
trackerD, e := hwio.GetPinWithMode(trackerDPin, hwio.INPUT)
if e != nil {
panic(e)
}
// Set up 'buttons' as inputs
buttonA, e := hwio.GetPinWithMode(buttonAPin, hwio.INPUT)
if e != nil {
panic(e)
}
buttonB, e := hwio.GetPinWithMode(buttonBPin, hwio.INPUT)
if e != nil {
panic(e)
}
// Set up 'leds' as outputs
statusLed, e := hwio.GetPinWithMode(statusLedPin, hwio.OUTPUT)
if e != nil {
panic(e)
}
thisActionLed, e := hwio.GetPinWithMode(actionLedPin, hwio.OUTPUT)
if e != nil {
panic(e)
}
actionLed = thisActionLed
fmt.Printf("Push button A to start, B to finish...\n")
// read the button A change to init the data readdings
waitTillButtonPushed(buttonA)
hwio.DigitalWrite(statusLed, hwio.HIGH)
t0 = time.Now()
fmt.Printf("Beginning.....\n")
// launch the trackers
go readTracker("A", trackerA)
go readTracker("B", trackerB)
go readTracker("C", trackerC)
go readTracker("D", trackerD)
// wait till button B is pushed
waitTillButtonPushed(buttonB)
hwio.DigitalWrite(statusLed, hwio.LOW)
fmt.Printf("Finnishing.....\n")
//fmt.Print("Enter to finish: ")
//var input string
//fmt.Scanln(&input)
// close the GPIO pins
defer hwio.CloseAll()
defer thisOutputFile.Close() //close the file when main finished
}