class LCD():
# All avalaible colors
COLOR_RED = 0
COLOR_YELLOW = 1
COLOR_GREEN = 2
COLOR_TEAL = 3
COLOR_BLUE = 4
COLOR_VIOLET = 5
COLOR_ON = 6
COLOR_OFF = 7
def __init__(self):
self.__lcd = Adafruit_CharLCDPlate()
self.__buttons = (
self.__lcd.LEFT,
self.__lcd.UP,
self.__lcd.DOWN,
self.__lcd.RIGHT,
self.__lcd.SELECT,
)
self.__col = (
self.__lcd.RED,
self.__lcd.YELLOW,
self.__lcd.GREEN,
self.__lcd.TEAL,
self.__lcd.BLUE,
self.__lcd.VIOLET,
self.__lcd.ON,
self.__lcd.OFF
)
def stop(self):
self.change_color(7)
self.__lcd.clear()
def clear(self, clear_background):
if clear_background:
self.change_color(6)
self.__lcd.clear()
def change_color(self, index):
self.__lcd.backlight(self.__col[index])
def set_message(self, msg):
self.__lcd.message(msg)
def button_pressed(self, index):
return self.__lcd.buttonPressed(self.__buttons[index])
def lcdDisplay():
lcd = Adafruit_CharLCDPlate(busnum = 1, addr=0x24)
lcd.backlight(lcd.TEAL)
while True:
altitude = resources.getRes("altitude").getState()
heading = resources.getRes("heading").getState()
direction = dirs[int((heading+11.25)%360/22.5)]
outsideTemp = resources.getRes("outsideTemp").getState()
coolantTemp = resources.getRes("coolantTemp").getState()*9/5+32
battery = resources.getRes("battery").getState()
message = "%5d' %03s %03d\n%3dF %3dF %4.1fV" % (altitude, direction, heading, outsideTemp, coolantTemp, battery)
lcd.clear()
lcd.message(message)
time.sleep(10)
songName = ''
playStatus = '[stopped]'
times = '0:00/0:00 (0%)'
lcd.setCursor(0,0)
artistSong = (songName)
if artistSong != lastArtistSong:
scroller.setNewText(artistSong)
lastArtistSong = artistSong
# Aubrey - If the songname is shorter than 16, just display it,
# else, scroll it...
if songName != '':
if len(songName) < 16:
lcd.message(artistSong + ' \n' + \
(times + ' ')[0:16])
else:
lcd.message(scroller.scroll()[0:16] + '\n' + \
(times + ' ')[0:16])
else:
lcd.message((playStatus + ' ')[0:16] + '\n' + \
(times + ' ')[0:16])
# Poll the buttons most of the sleep time, to make them responsive the plan is to
# poll the buttons for 400ms and then update the status on the display
# If we sleep for 40ms between each poll time and have five buttons that equals to 200 ms
# Two iterations of this gives us 400 ms.
# for i in range (0, 10):
for i in range (0, 5):
for b in btn:
if lcd.buttonPressed(b):
songName = ''
playStatus = '[stopped]'
times = '0:00/0:00 (0%)'
lcd.setCursor(0, 0)
artistSong = (songName)
if artistSong != lastArtistSong:
scroller.setNewText(artistSong)
lastArtistSong = artistSong
# Aubrey - If the songname is shorter than 16, just display it,
# else, scroll it...
if songName != '':
if len(songName) < 16:
lcd.message(artistSong + ' \n' + \
(times + ' ')[0:16])
else:
lcd.message(scroller.scroll()[0:16] + '\n' + \
(times + ' ')[0:16])
else:
lcd.message((playStatus + ' ')[0:16] + '\n' + \
(times + ' ')[0:16])
# Poll the buttons most of the sleep time, to make them responsive the plan is to
# poll the buttons for 400ms and then update the status on the display
# If we sleep for 40ms between each poll time and have five buttons that equals to 200 ms
# Two iterations of this gives us 400 ms.
# for i in range (0, 10):
for i in range(0, 5):
for b in btn:
if lcd.buttonPressed(b):
class Device(object):
def __init__(self):
self.lcd = None
self._color = RED
self._lastbuttons = 0
self._lock = threading.Lock()
def get_buttons(self):
pressed = []
self._lock.acquire()
try:
if not self.lcd:
return []
buttons = self.lcd.buttons()
finally:
self._lock.release()
for button in BUTTONS:
power = 1 << button
if (buttons & power) == 0:
if (self._lastbuttons & power) != 0:
pressed.append(button)
self._lastbuttons = buttons
return pressed
def color(self, color):
if self.lcd:
self._lock.acquire()
self.lcd.backlight(color)
self._lock.release()
self._color = color
def on(self):
self._lock.acquire()
self.lcd = Adafruit_CharLCDPlate()
self.lcd.begin(WIDTH, 2)
self.lcd.clear()
self.lcd.backlight(self._color)
self._lock.release()
def off(self):
if self.lcd:
self._lock.acquire()
self.lcd.clear()
self.lcd.stop()
self.lcd = None
self._lock.release()
def display(self, line1 = None, line2 = None):
if not self.lcd:
self.on()
self._lock.acquire()
if line1 is not None:
line1 = str(line1).ljust(WIDTH)
self.lcd.setCursor(0, 0)
self.lcd.message(line1)
if line2 is not None:
line2 = str(line2).ljust(WIDTH)
self.lcd.setCursor(0, 1)
self.lcd.message(line2)
self._lock.release()
