# We add five extra spaces between each complete text scroll.
if self.position > len(self.text) + 4:
self.position = 0
return scrolledText
def setNewText(self, newText):
self.text = newText
self.position = 0
# Initialize the LCD plate. Should auto-detect correct I2C bus. If not,
# pass '0' for early 256 MB Model B boards or '1' for all later versions
lcd = Adafruit_CharLCDPlate()
lcd.begin(16, 2)
lcd.clear()
lcd.backlight(lcd.ON)
tmr = None
# Poll buttons
btn = (lcd.LEFT, lcd.UP, lcd.DOWN, lcd.RIGHT, lcd.SELECT)
lastArtistSong = ''
scroller = TextScroller('', 16)
while True:
# Get current status and playtime
process = subprocess.Popen('mpc', shell=True, stdout=subprocess.PIPE)
status = process.communicate()[0]
statusLines = status.split('\n')
# We add five extra spaces between each complete text scroll.
if self.position > len(self.text) + 4 :
self.position = 0
return scrolledText
def setNewText(self, newText):
self.text = newText
self.position = 0
# Initialize the LCD plate. Should auto-detect correct I2C bus. If not,
# pass '0' for early 256 MB Model B boards or '1' for all later versions
lcd = Adafruit_CharLCDPlate()
lcd.begin(16,2)
lcd.clear()
lcd.backlight(lcd.ON)
tmr = None
# Poll buttons
btn = (lcd.LEFT, lcd.UP, lcd.DOWN, lcd.RIGHT, lcd.SELECT)
lastArtistSong = ''
scroller = TextScroller('', 16)
while True:
# Get current status and playtime
process = subprocess.Popen('mpc', shell=True, stdout=subprocess.PIPE)
status = process.communicate()[0]
statusLines = status.split('\n')
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()
