Пример #1
0
  def __init__(self, text = "This is a test scrolling text class.", width = 16, direction = True, scrolling = True, speed = 0.2, blinking = False, blinkSpeed = 0.25):
    threading.Thread.__init__(self)
    self.lock = threading.Lock()
    self.sText = ScrollingText(text, width, direction)
    #print self.sText
    self.daemon = True
 
    # Timers
    self.scrollTimer = Timer(speed, scrolling)      
    self.blinkTimer = Timer(blinkSpeed, blinking)
    self.blinkState = False
Пример #2
0
        def __init__(self, controller, gpio=None):
            threading.Thread.__init__(self)
            self.lock = threading.Lock()

            # Controller resource
            self.controller = controller

            # Display resource
            self.disp = Display(gpio)
            self.mp3Title = ""

            # Create text buffers but don't scroll or blink just yet
            self.sTextLine1 = ScrollingText.Worker("", 16, True, False, 0.8,
                                                   False, 0.5)
            self.sTextLine2 = ScrollingText.Worker("", 16, True, False, 0.8,
                                                   False, 0.5)
            self.sTextLine1.start()
            self.sTextLine2.start()

            self.daemon = True

            # Clock Setup
            self.clockOn = False
            self.clockShowSeconds = True

            #################################
            # DISPLAY STATES
            #
            # Welcome State (with 2 second timeout)
            # Media State (with clock)
            # MP3 State (with scrolling text)
            # Radio State (with scrolling station description)
            #
            # Volume change state
            # --> Volume Lingering state
            #    --> Back to current state
            self.states = enum(STATE_WELCOME=0,
                               STATE_MEDIA=1,
                               STATE_MP3=2,
                               STATE_RADIO=3,
                               STATE_AUX=4,
                               STATE_MUTED=5,
                               STATE_VOLUME=6,
                               STATE_TONE=7,
                               STATE_SHUTDOWN=8)

            # Timers
            #
            self.volumeTimer = Timer(1, False)
            self.toneTimer = Timer(1, False)
            self.selectLedTimer = Timer(0.25, False)
            self.welcomeTimer = Timer(3, False)
            self.MAIN_THREAD_DELAY = 0.01

            self.state = self.states.STATE_WELCOME
            self.prevState = self.states.STATE_WELCOME
            self.lastMenu = self.states.STATE_MEDIA
            self.powerOn()
Пример #3
0
    def __init__(self, controller, gpio = None):
      threading.Thread.__init__(self)
      self.lock = threading.Lock()

      # Controller resource
      self.controller = controller      

      # Display resource
      self.disp = Display(gpio)
      self.mp3Title = ""
      
      # Create text buffers but don't scroll or blink just yet
      self.sTextLine1 = ScrollingText.Worker("", 16, True, False, 0.8, False, 0.5)
      self.sTextLine2 = ScrollingText.Worker("", 16, True, False, 0.8, False, 0.5)
      self.sTextLine1.start()
      self.sTextLine2.start()
      
      self.daemon = True
   
      # Clock Setup
      self.clockOn = False
      self.clockShowSeconds = True
      
      #################################
      # DISPLAY STATES
      #
      # Welcome State (with 2 second timeout)
      # Media State (with clock)
      # MP3 State (with scrolling text)
      # Radio State (with scrolling station description)
      #
      # Volume change state
      # --> Volume Lingering state
      #    --> Back to current state
      self.states = enum(STATE_WELCOME = 0, STATE_MEDIA = 1, STATE_MP3 = 2, STATE_RADIO = 3, STATE_AUX = 4,  STATE_MUTED = 5, STATE_VOLUME = 6, STATE_TONE = 7, STATE_SHUTDOWN = 8)

      # Timers
      #
      self.volumeTimer = Timer(1, False)
      self.toneTimer = Timer(1, False)
      self.selectLedTimer = Timer(0.25, False)
      self.welcomeTimer = Timer(3, False)
      self.MAIN_THREAD_DELAY = 0.01
      
      self.state = self.states.STATE_WELCOME
      self.prevState = self.states.STATE_WELCOME
      self.lastMenu = self.states.STATE_MEDIA
      self.powerOn()
        def __init__(self,
                     text="This is a test scrolling text class.",
                     width=16,
                     direction=True,
                     scrolling=True,
                     speed=0.2,
                     blinking=False,
                     blinkSpeed=0.25):
            threading.Thread.__init__(self)
            self.lock = threading.Lock()
            self.sText = ScrollingText(text, width, direction)
            #print self.sText
            self.daemon = True

            # Timers
            self.scrollTimer = Timer(speed, scrolling)
            self.blinkTimer = Timer(blinkSpeed, blinking)
            self.blinkState = False
Пример #5
0
    class Worker(threading.Thread):

        # Realtime clock (every second)
        # Flashing text (for mute state)
        # Scrolling text (for now playing)

        def __init__(self, controller, gpio=None):
            threading.Thread.__init__(self)
            self.lock = threading.Lock()

            # Controller resource
            self.controller = controller

            # Display resource
            self.disp = Display(gpio)
            self.mp3Title = ""

            # Create text buffers but don't scroll or blink just yet
            self.sTextLine1 = ScrollingText.Worker("", 16, True, False, 0.8,
                                                   False, 0.5)
            self.sTextLine2 = ScrollingText.Worker("", 16, True, False, 0.8,
                                                   False, 0.5)
            self.sTextLine1.start()
            self.sTextLine2.start()

            self.daemon = True

            # Clock Setup
            self.clockOn = False
            self.clockShowSeconds = True

            #################################
            # DISPLAY STATES
            #
            # Welcome State (with 2 second timeout)
            # Media State (with clock)
            # MP3 State (with scrolling text)
            # Radio State (with scrolling station description)
            #
            # Volume change state
            # --> Volume Lingering state
            #    --> Back to current state
            self.states = enum(STATE_WELCOME=0,
                               STATE_MEDIA=1,
                               STATE_MP3=2,
                               STATE_RADIO=3,
                               STATE_AUX=4,
                               STATE_MUTED=5,
                               STATE_VOLUME=6,
                               STATE_TONE=7,
                               STATE_SHUTDOWN=8)

            # Timers
            #
            self.volumeTimer = Timer(1, False)
            self.toneTimer = Timer(1, False)
            self.selectLedTimer = Timer(0.25, False)
            self.welcomeTimer = Timer(3, False)
            self.MAIN_THREAD_DELAY = 0.01

            self.state = self.states.STATE_WELCOME
            self.prevState = self.states.STATE_WELCOME
            self.lastMenu = self.states.STATE_MEDIA
            self.powerOn()

        ################################################
        # Respond according to the current machine state
        #
        def run(self):

            line1PrevBuffer = ""
            line2PrevBuffer = ""

            while True:
                #########################
                # DETERMINE MACHINE STATE
                #
                # Muted Blinking state on?
                if self.state == self.states.STATE_MUTED:
                    # update the (blinking) line buffers
                    self.updateMuteStateBuffers()

                elif self.state == self.states.STATE_VOLUME:
                    # update the volume line buffers
                    self.updateVolumeStateBuffers()

                    # is the volume display lingering timer on and has it expired?
                    if self.volumeTimer.isOn(
                    ) == True and self.volumeTimer.elapsed() == True:
                        #print "Volume Lingering timer elapsed!"
                        self.volumeTimer.stop()
                        self.restorePreviousState()

                elif self.state == self.states.STATE_TONE:
                    # update the tone line buffers
                    self.updateToneStateBuffers()

                    # is the tone display lingering timer on and has it expired?
                    if self.toneTimer.isOn(
                    ) == True and self.toneTimer.elapsed() == True:
                        #print "Tone Lingering timer elapsed!"
                        self.toneTimer.stop()
                        self.restorePreviousState()

                elif self.state == self.states.STATE_MEDIA:
                    self.updateMediaStateBuffers()

                elif self.state == self.states.STATE_MP3:
                    self.updateMp3StateBuffers()

                elif self.state == self.states.STATE_RADIO:
                    self.updateRadioStateBuffers()

                elif self.state == self.states.STATE_AUX:
                    self.updateAuxStateBuffers()

                elif self.state == self.states.STATE_WELCOME:
                    self.updateWelcomeStateBuffers()

                    # is the welcome timer on and has it expired?
                    if self.welcomeTimer.isOn(
                    ) == True and self.welcomeTimer.elapsed() == True:
                        #print "Welcome timer elapsed!"
                        self.welcomeTimer.stop()
                        # show media state (default)
                        self.showMedia()

                elif self.state == self.states.STATE_SHUTDOWN:
                    self.updateShutdownStateBuffers()

                ##########################################################
                # are the current buffers different from previous buffers?
                if line1PrevBuffer != self.sTextLine1.getText(
                ) or line2PrevBuffer != self.sTextLine2.getText():
                    #print "Display Updating..."
                    self._updateLcdDisplay()
                    # cache current buffers
                    line1PrevBuffer = self.sTextLine1.getText()
                    line2PrevBuffer = self.sTextLine2.getText()

                # Has the select led timer elapsed?
                if self.selectLedTimer.elapsed() == True:
                    self.selectLedTimer.stop()
                    # switch the led off
                    self.disp.sLed.off()

                ###########################
                # main display thread delay
                time.sleep(self.MAIN_THREAD_DELAY)

        #################################################
        # HIGH LEVEL COMMANDS (that alter machine states)
        #
        def powerOn(self):
            #print "power on"
            self.state = self.states.STATE_WELCOME
            self.prevState = self.states.STATE_WELCOME
            self.disp.lcd.on()
            self.disp.sLed.off()
            self.disp.mLed.off()
            self.welcomeTimer.start()

        def powerOff(self):
            self.state = self.states.STATE_SHUTDOWN
            self.disp.mLed.on()
            self.disp.sLed.on()
            self.stopAllTimers()

        def muteOn(self):
            #print "muteOn: " + str(self.state)
            # mute led on
            self.disp.mLed.on()
            # Setup for blinking mute lcd
            self.stopAllTimers()
            self.sTextLine1.startBlink()
            # Save the last menu to restore
            self.prevState = self.lastMenu
            # Set the state (refreshed next cycle) only if not volume
            #if self.state != self.states.STATE_VOLUME or self.state != self.states.STATE_MUTED:
            #  self.prevState = self.state
            self.state = self.states.STATE_MUTED

        def muteOff(self):
            #print "muteOff: " + str(self.state)
            self.disp.mLed.off()
            # set the state to the last menu prior to muting
            self.state = self.lastMenu
            self.showVolume()

        def showVolume(self):
            #print "showVolume"
            self.stopAllTimers()
            self.volumeTimer.start()
            # Set the previous state (as long as it's not the volume or tone state)
            if self.state != self.states.STATE_VOLUME and self.state != self.states.STATE_TONE:
                self.prevState = self.state
            # now set the current state to volume
            self.state = self.states.STATE_VOLUME

        def showTone(self):
            #print "showTone"
            self.stopAllTimers()
            self.toneTimer.start()
            # Set the previous state (as long as it's not the tone or volume state)
            if self.state != self.states.STATE_TONE and self.state != self.states.STATE_VOLUME:
                self.prevState = self.state
            # now set the current state to tone
            self.state = self.states.STATE_TONE

        def setVolume(self, vol):
            self.disp.vol.set(vol)
            self.showVolume()

        def setTone(self, bass, treble):
            self.disp.tone.set(bass, treble)
            self.showTone()

        def setRadio(self, station):
            self.disp.radio.set(station)
            self.showRadio()

        def setMp3(self, mp3):
            self.disp.mp3.set(mp3)
            self.showMp3()

        def showMedia(self):
            self.stopAllTimers()
            self.disp.sLed.on()
            self.selectLedTimer.start()
            self.startClock()
            self.prevState = self.state
            self.state = self.states.STATE_MEDIA
            self.lastMenu = self.state

        def showMp3(self):
            self.stopAllTimers()
            self.disp.sLed.on()
            self.selectLedTimer.start()
            self.sTextLine1.setText(self.disp.mp3.getLine1())
            self.sTextLine2.setText(self.disp.mp3.getLine2())
            self.sTextLine2.startScroll()
            self.prevState = self.state
            self.state = self.states.STATE_MP3
            self.lastMenu = self.state
            mp3Status = self.controller.mp3.getStatus()
            if 'title' in mp3Status:
                self.mp3Title = mp3Status['title']
            else:
                self.mp3Title = ''

        def showRadio(self):
            self.stopAllTimers()
            self.disp.sLed.on()
            self.selectLedTimer.start()
            self.sTextLine1.setText(self.disp.radio.getLine1())
            self.sTextLine2.setText(self.disp.radio.getLine2())
            #self.sTextLine2.startScroll()
            self.prevState = self.state
            self.state = self.states.STATE_RADIO
            self.lastMenu = self.state

        def showAux(self):
            self.stopAllTimers()
            self.disp.sLed.on()
            self.selectLedTimer.start()
            #self.sTextLine2.startScroll()
            #self.sTextLine2.startBlink()
            self.prevState = self.state
            self.state = self.states.STATE_AUX
            self.lastMenu = self.state

        def showWelcome(self):
            self.stopAllTimers()
            self.welcomeTimer.start()
            self.prevState = self.state
            self.state = self.states.STATE_WELCOME

        #########################
        # UPDATE LCD LINE BUFFERS
        #
        def updateMuteStateBuffers(self):
            self.sTextLine1.setText("Volume Muted")
            self.sTextLine2.setText("")

        def updateVolumeStateBuffers(self):
            db = "%ddB" % self.disp.vol.dB()
            db = db.rjust(10, " ")
            line1 = "Volume%s" % db
            line2 = self.disp.vol.hash()
            self.sTextLine1.setText(line1)
            self.sTextLine2.setText(line2)

        def updateToneStateBuffers(self):
            line1 = self.disp.tone.hashBass()
            line2 = self.disp.tone.hashTreble()
            self.sTextLine1.setText(line1)
            self.sTextLine2.setText(line2)

        def updateMediaStateBuffers(self):
            # Showing static text on Line 1
            self.sTextLine1.setText(self.disp.helper.centerText("Media"))
            # Showing the Clock on line 2
            self.sTextLine2.setText(self.getClock())

        def updateMp3StateBuffers(self):
            if self.hasMp3Changed() == True:
                self.disp.mp3.set(self.controller.mp3.getStatus())
                self.stopAllTimers()
                self.sTextLine1.setText(self.disp.mp3.getLine1())
                self.sTextLine2.setText(self.disp.mp3.getLine2())
                self.sTextLine2.startScroll()

        def updateRadioStateBuffers(self):
            return
            #self.sTextLine1.getText()
            #self.sTextLine2.getText()

        def updateAuxStateBuffers(self):
            # AUX Display (todo)
            self.sTextLine1.setText(self.disp.helper.centerText("Aux"))
            self.sTextLine2.setText("")

        def updateWelcomeStateBuffers(self):
            self.sTextLine1.setText("Master " + chr(246) + " Control")
            self.sTextLine2.setText("v0.5 Ronald Diaz")

        def updateShutdownStateBuffers(self):
            self.sTextLine1.setText("Shutting down...")
            self.sTextLine2.setText("")

        def hasMp3Changed(self):
            status = self.controller.mp3.getStatus()
            if 'title' in status and self.mp3Title != status['title']:
                self.mp3Title = status['title']
                return True
            return False

        ####################
        # UPDATE LCD DISPLAY
        def _updateLcdDisplay(self):
            line1 = self.sTextLine1.getText()
            line2 = self.sTextLine2.getText()
            self.disp.lcd.message(line1 + "\n" + line2)
            #print line1
            #print line2

        ##################
        # INTERNAL METHODS
        #
        # stopAll(scrolling / blinking / clock / time remain / lingering)
        def stopAllTimers(self):
            self.sTextLine1.stopAll()
            self.sTextLine2.stopAll()
            self.volumeTimer.stop()
            self.stopClock()

        def startClock(self):
            self.clockOn = True
            self.sTextLine2.stopScroll()
            self.sTextLine2.setText(self.getClock())

        def stopClock(self):
            self.clockOn = False

        def getClock(self):
            if self.clockShowSeconds == True:
                return str(time.strftime(" %2d %b %H:%M:%S"))
            else:
                return str(time.stftime("%a %b %H:%M"))

        # restore prev state ( welcome | media | mp3 | muted)
        def restorePreviousState(self):
            self.state = self.prevState
            if self.state == self.states.STATE_WELCOME:
                #print "restoring: welcome"
                self.showWelcome()
            elif self.state == self.states.STATE_MEDIA:
                #print "restoring: media"
                self.showMedia()
            elif self.state == self.states.STATE_MP3:
                #print "restoring: mp3"
                self.showMp3()
            elif self.state == self.states.STATE_RADIO:
                #print "restoring: radio"
                self.showRadio()
            elif self.state == self.states.STATE_AUX:
                #print "restoring: aux"
                self.showAux()
            elif self.state == self.states.STATE_MUTED:
                #print "restoring: muted"
                self.muteOn()
Пример #6
0
  class Worker(threading.Thread):
    def __init__(self, text = "This is a test scrolling text class.", width = 16, direction = True, scrolling = True, speed = 0.2, blinking = False, blinkSpeed = 0.25):
      threading.Thread.__init__(self)
      self.lock = threading.Lock()
      self.sText = ScrollingText(text, width, direction)
      #print self.sText
      self.daemon = True
   
      # Timers
      self.scrollTimer = Timer(speed, scrolling)      
      self.blinkTimer = Timer(blinkSpeed, blinking)
      self.blinkState = False
      
    def run(self):
      while True:        
        # are we currently scrolling?
        if self.scrollTimer.isOn() == True:
          #print "scrolling!"
          # have we elapsed the scroll scrollTimer?
          if self.scrollTimer.elapsed() == True:                                
            #print "scroll scrollTimer elapsed!"
            self.sText.scroll()                         
            # reset the scrollTimer
            self.scrollTimer.reset()            
            
        # are we currently blinking?
        if self.blinkTimer.isOn() == True:
          # have we elapsed the blinking scrollTimer?
          if self.blinkTimer.elapsed() == True:
            #print "BLINK"
            # switch blink states
            self.blinkState = not self.blinkState
            #print str(self.blinkState)
            # restart the blinking scrollTimer
            self.blinkTimer.reset()
                        
        time.sleep(0.01)

    def setText(self, text, direction = True):
      self.sText.setText(text, direction)

    def getText(self):
      #with self.lock:
      # if currently blinking
      if self.blinkState == True:                               
       return " " * self.sText.width
      else:  
        return self.sText.getText()
  
    def startScroll(self):
      self.scrollTimer.start()
      
    def stopScroll(self):
      self.scrollTimer.stop()
  
    def startBlink(self):
      self.blinkTimer.start()
      self.blinkState = True
      
    def stopBlink(self):
      self.blinkTimer.stop()
      self.blinkState = False
      
    def stopAll(self):        
      self.stopScroll()
      self.stopBlink()
    class Worker(threading.Thread):
        def __init__(self,
                     text="This is a test scrolling text class.",
                     width=16,
                     direction=True,
                     scrolling=True,
                     speed=0.2,
                     blinking=False,
                     blinkSpeed=0.25):
            threading.Thread.__init__(self)
            self.lock = threading.Lock()
            self.sText = ScrollingText(text, width, direction)
            #print self.sText
            self.daemon = True

            # Timers
            self.scrollTimer = Timer(speed, scrolling)
            self.blinkTimer = Timer(blinkSpeed, blinking)
            self.blinkState = False

        def run(self):
            while True:
                # are we currently scrolling?
                if self.scrollTimer.isOn() == True:
                    #print "scrolling!"
                    # have we elapsed the scroll scrollTimer?
                    if self.scrollTimer.elapsed() == True:
                        #print "scroll scrollTimer elapsed!"
                        self.sText.scroll()
                        # reset the scrollTimer
                        self.scrollTimer.reset()

                # are we currently blinking?
                if self.blinkTimer.isOn() == True:
                    # have we elapsed the blinking scrollTimer?
                    if self.blinkTimer.elapsed() == True:
                        #print "BLINK"
                        # switch blink states
                        self.blinkState = not self.blinkState
                        #print str(self.blinkState)
                        # restart the blinking scrollTimer
                        self.blinkTimer.reset()

                time.sleep(0.01)

        def setText(self, text, direction=True):
            self.sText.setText(text, direction)

        def getText(self):
            #with self.lock:
            # if currently blinking
            if self.blinkState == True:
                return " " * self.sText.width
            else:
                return self.sText.getText()

        def startScroll(self):
            self.scrollTimer.start()

        def stopScroll(self):
            self.scrollTimer.stop()

        def startBlink(self):
            self.blinkTimer.start()
            self.blinkState = True

        def stopBlink(self):
            self.blinkTimer.stop()
            self.blinkState = False

        def stopAll(self):
            self.stopScroll()
            self.stopBlink()
Пример #8
0
  class Worker(threading.Thread):
    
    # Realtime clock (every second)
    # Flashing text (for mute state)
    # Scrolling text (for now playing)    
      
    def __init__(self, controller, gpio = None):
      threading.Thread.__init__(self)
      self.lock = threading.Lock()

      # Controller resource
      self.controller = controller      

      # Display resource
      self.disp = Display(gpio)
      self.mp3Title = ""
      
      # Create text buffers but don't scroll or blink just yet
      self.sTextLine1 = ScrollingText.Worker("", 16, True, False, 0.8, False, 0.5)
      self.sTextLine2 = ScrollingText.Worker("", 16, True, False, 0.8, False, 0.5)
      self.sTextLine1.start()
      self.sTextLine2.start()
      
      self.daemon = True
   
      # Clock Setup
      self.clockOn = False
      self.clockShowSeconds = True
      
      #################################
      # DISPLAY STATES
      #
      # Welcome State (with 2 second timeout)
      # Media State (with clock)
      # MP3 State (with scrolling text)
      # Radio State (with scrolling station description)
      #
      # Volume change state
      # --> Volume Lingering state
      #    --> Back to current state
      self.states = enum(STATE_WELCOME = 0, STATE_MEDIA = 1, STATE_MP3 = 2, STATE_RADIO = 3, STATE_AUX = 4,  STATE_MUTED = 5, STATE_VOLUME = 6, STATE_TONE = 7, STATE_SHUTDOWN = 8)

      # Timers
      #
      self.volumeTimer = Timer(1, False)
      self.toneTimer = Timer(1, False)
      self.selectLedTimer = Timer(0.25, False)
      self.welcomeTimer = Timer(3, False)
      self.MAIN_THREAD_DELAY = 0.01
      
      self.state = self.states.STATE_WELCOME
      self.prevState = self.states.STATE_WELCOME
      self.lastMenu = self.states.STATE_MEDIA
      self.powerOn()

    ################################################
    # Respond according to the current machine state
    #
    def run(self):
        
      line1PrevBuffer = ""
      line2PrevBuffer = ""
      
      while True:
        #########################
        # DETERMINE MACHINE STATE
        #
        # Muted Blinking state on?
        if self.state == self.states.STATE_MUTED:
          # update the (blinking) line buffers
          self.updateMuteStateBuffers()
          
        elif self.state == self.states.STATE_VOLUME:
          # update the volume line buffers
          self.updateVolumeStateBuffers()
          
          # is the volume display lingering timer on and has it expired?
          if self.volumeTimer.isOn() == True and self.volumeTimer.elapsed() == True:
            #print "Volume Lingering timer elapsed!"
            self.volumeTimer.stop()
            self.restorePreviousState()
          
        elif self.state == self.states.STATE_TONE:
          # update the tone line buffers
          self.updateToneStateBuffers()
          
          # is the tone display lingering timer on and has it expired?
          if self.toneTimer.isOn() == True and self.toneTimer.elapsed() == True:
            #print "Tone Lingering timer elapsed!"
            self.toneTimer.stop()
            self.restorePreviousState()

        elif self.state == self.states.STATE_MEDIA:
          self.updateMediaStateBuffers()
          
        elif self.state == self.states.STATE_MP3:
          self.updateMp3StateBuffers()

        elif self.state == self.states.STATE_RADIO:
          self.updateRadioStateBuffers()

        elif self.state == self.states.STATE_AUX:
          self.updateAuxStateBuffers()          
          
        elif self.state == self.states.STATE_WELCOME:
          self.updateWelcomeStateBuffers()
          
          # is the welcome timer on and has it expired?
          if self.welcomeTimer.isOn() == True and self.welcomeTimer.elapsed() == True:
            #print "Welcome timer elapsed!"
            self.welcomeTimer.stop()
            # show media state (default)
            self.showMedia()

        elif self.state == self.states.STATE_SHUTDOWN:
          self.updateShutdownStateBuffers()

        ##########################################################
        # are the current buffers different from previous buffers?
        if line1PrevBuffer != self.sTextLine1.getText() or line2PrevBuffer != self.sTextLine2.getText():
          #print "Display Updating..."
          self._updateLcdDisplay()
          # cache current buffers
          line1PrevBuffer = self.sTextLine1.getText()
          line2PrevBuffer = self.sTextLine2.getText()

        # Has the select led timer elapsed?
        if self.selectLedTimer.elapsed() == True:
          self.selectLedTimer.stop()
          # switch the led off
          self.disp.sLed.off()

        ###########################
        # main display thread delay
        time.sleep(self.MAIN_THREAD_DELAY)
     
    #################################################
    # HIGH LEVEL COMMANDS (that alter machine states)
    #
    def powerOn(self):
      #print "power on"
      self.state = self.states.STATE_WELCOME
      self.prevState = self.states.STATE_WELCOME
      self.disp.lcd.on()
      self.disp.sLed.off()
      self.disp.mLed.off()
      self.welcomeTimer.start()
      
    def powerOff(self):
      self.state = self.states.STATE_SHUTDOWN
      self.disp.mLed.on()
      self.disp.sLed.on()
      self.stopAllTimers()
        
    def muteOn(self):
      #print "muteOn: " + str(self.state)
      # mute led on
      self.disp.mLed.on()
      # Setup for blinking mute lcd
      self.stopAllTimers()
      self.sTextLine1.startBlink()
      # Save the last menu to restore
      self.prevState = self.lastMenu
      # Set the state (refreshed next cycle) only if not volume
      #if self.state != self.states.STATE_VOLUME or self.state != self.states.STATE_MUTED:
      #  self.prevState = self.state
      self.state = self.states.STATE_MUTED
      
    def muteOff(self):
      #print "muteOff: " + str(self.state)
      self.disp.mLed.off()
      # set the state to the last menu prior to muting
      self.state = self.lastMenu
      self.showVolume()
     
    def showVolume(self):
      #print "showVolume"
      self.stopAllTimers()
      self.volumeTimer.start()
      # Set the previous state (as long as it's not the volume or tone state)
      if self.state != self.states.STATE_VOLUME and self.state != self.states.STATE_TONE:
        self.prevState = self.state
      # now set the current state to volume
      self.state = self.states.STATE_VOLUME 
      
    def showTone(self):
      #print "showTone"
      self.stopAllTimers()
      self.toneTimer.start()
      # Set the previous state (as long as it's not the tone or volume state)
      if self.state != self.states.STATE_TONE and self.state != self.states.STATE_VOLUME:
        self.prevState = self.state
      # now set the current state to tone
      self.state = self.states.STATE_TONE 
    
    def setVolume(self, vol):
      self.disp.vol.set(vol)
      self.showVolume()

    def setTone(self, bass, treble):
      self.disp.tone.set(bass, treble)
      self.showTone()

    def setRadio(self, station):
      self.disp.radio.set(station)
      self.showRadio()

    def setMp3(self, mp3):
      self.disp.mp3.set(mp3)
      self.showMp3()

    def showMedia(self):
      self.stopAllTimers()
      self.disp.sLed.on()
      self.selectLedTimer.start()
      self.startClock()
      self.prevState = self.state
      self.state = self.states.STATE_MEDIA
      self.lastMenu = self.state

    def showMp3(self):
      self.stopAllTimers()
      self.disp.sLed.on()
      self.selectLedTimer.start()
      self.sTextLine1.setText(self.disp.mp3.getLine1())
      self.sTextLine2.setText(self.disp.mp3.getLine2())
      self.sTextLine2.startScroll()
      self.prevState = self.state
      self.state = self.states.STATE_MP3
      self.lastMenu = self.state
      mp3Status = self.controller.mp3.getStatus()
      if 'title' in mp3Status:
        self.mp3Title = mp3Status['title']
      else:
        self.mp3Title = ''

    def showRadio(self):
      self.stopAllTimers()
      self.disp.sLed.on()
      self.selectLedTimer.start()    
      self.sTextLine1.setText(self.disp.radio.getLine1())
      self.sTextLine2.setText(self.disp.radio.getLine2())
      #self.sTextLine2.startScroll()    
      self.prevState = self.state
      self.state = self.states.STATE_RADIO
      self.lastMenu = self.state

    def showAux(self):
      self.stopAllTimers()
      self.disp.sLed.on()
      self.selectLedTimer.start()
      #self.sTextLine2.startScroll()
      #self.sTextLine2.startBlink()
      self.prevState = self.state
      self.state = self.states.STATE_AUX
      self.lastMenu = self.state

    def showWelcome(self):
      self.stopAllTimers()
      self.welcomeTimer.start()
      self.prevState = self.state
      self.state = self.states.STATE_WELCOME
      
    #########################
    # UPDATE LCD LINE BUFFERS
    #
    def updateMuteStateBuffers(self):
      self.sTextLine1.setText("Volume Muted")
      self.sTextLine2.setText("")

    def updateVolumeStateBuffers(self):
      db = "%ddB" % self.disp.vol.dB()
      db = db.rjust(10, " ")
      line1 = "Volume%s" % db
      line2 = self.disp.vol.hash()
      self.sTextLine1.setText(line1)
      self.sTextLine2.setText(line2)
    
    def updateToneStateBuffers(self):
      line1 = self.disp.tone.hashBass()
      line2 = self.disp.tone.hashTreble()
      self.sTextLine1.setText(line1)
      self.sTextLine2.setText(line2)

    def updateMediaStateBuffers(self):
      # Showing static text on Line 1
      self.sTextLine1.setText(self.disp.helper.centerText("Media"))
      # Showing the Clock on line 2
      self.sTextLine2.setText(self.getClock())

    def updateMp3StateBuffers(self):
      if self.hasMp3Changed() == True:
        self.disp.mp3.set(self.controller.mp3.getStatus())
        self.stopAllTimers()
        self.sTextLine1.setText(self.disp.mp3.getLine1())
        self.sTextLine2.setText(self.disp.mp3.getLine2())
        self.sTextLine2.startScroll()

    def updateRadioStateBuffers(self):
      return
      #self.sTextLine1.getText()
      #self.sTextLine2.getText()

    def updateAuxStateBuffers(self):
      # AUX Display (todo)
      self.sTextLine1.setText(self.disp.helper.centerText("Aux"))
      self.sTextLine2.setText("")

    def updateWelcomeStateBuffers(self):
      self.sTextLine1.setText("Master " + chr(246) + " Control")
      self.sTextLine2.setText("v0.5 Ronald Diaz")

    def updateShutdownStateBuffers(self):
      self.sTextLine1.setText("Shutting down...")
      self.sTextLine2.setText("")

    def hasMp3Changed(self):
      status = self.controller.mp3.getStatus()
      if 'title' in status and self.mp3Title != status['title']:
        self.mp3Title = status['title']
        return True
      return False

    ####################
    # UPDATE LCD DISPLAY
    def _updateLcdDisplay(self):
      line1 = self.sTextLine1.getText()
      line2 = self.sTextLine2.getText()
      self.disp.lcd.message(line1 + "\n" + line2)
      #print line1
      #print line2

    ##################
    # INTERNAL METHODS
    #
    # stopAll(scrolling / blinking / clock / time remain / lingering)
    def stopAllTimers(self):
      self.sTextLine1.stopAll()
      self.sTextLine2.stopAll()
      self.volumeTimer.stop()
      self.stopClock()

    def startClock(self):
      self.clockOn = True
      self.sTextLine2.stopScroll()
      self.sTextLine2.setText(self.getClock())

    def stopClock(self):
      self.clockOn = False

    def getClock(self):
      if self.clockShowSeconds == True:
        return str(time.strftime(" %2d %b %H:%M:%S"))
      else:
        return str(time.stftime("%a %b %H:%M"))

    # restore prev state ( welcome | media | mp3 | muted)
    def restorePreviousState(self):
      self.state = self.prevState
      if self.state == self.states.STATE_WELCOME:
        #print "restoring: welcome"
        self.showWelcome()
      elif self.state == self.states.STATE_MEDIA:
        #print "restoring: media"
        self.showMedia()
      elif self.state == self.states.STATE_MP3:
        #print "restoring: mp3"
        self.showMp3()
      elif self.state == self.states.STATE_RADIO:
        #print "restoring: radio"
        self.showRadio()
      elif self.state == self.states.STATE_AUX:
        #print "restoring: aux"
        self.showAux()
      elif self.state == self.states.STATE_MUTED:
        #print "restoring: muted"
        self.muteOn()