def lcd_display():
"""Write display buffer to physical display."""
# Reset to position zero
lcd_command(PCD8544_SETYADDR)
lcd_command(PCD8544_SETXADDR)
# Write the buffer
GPIO.output(DC, GPIO.HIGH)
for x in range(6):
SPI.write(lcd_buffer[x * 84:x * 84 + 84])
def display( self ): """Write display buffer to physical display.""" # Reset to position zero self.command( PCD8544_SETYADDR ) self.command( PCD8544_SETXADDR ) # Write the buffer GPIO.output( self._dc, GPIO.HIGH ) for x in range( 6 ): _rslt = SPI.write( self._buffer[ x * 84 : x * 84 + 84 ] )
def __init__( self, spidev, dc, rst, ledpin, ledbrightness ): self._spidev = spidev self._dc = dc self._rst = rst self._ledpin = ledpin GPIO.setmode( GPIO.BCM ) GPIO.setup( self._dc, GPIO.OUT ) GPIO.setup( self._rst, GPIO.OUT ) GPIO.setup( self._ledpin, GPIO.OUT ) # brightness should be between 0.1 and 100 self._ledbrightness = max( 0.1, min( ledbrightness, 100 ) ) self._ledpwm = GPIO.PWM( self._ledpin, 100 ) self._ledpwm.start( self._ledbrightness ) self._spifd = SPI.open( self._spidev, speed = 4000000 ) self.extended_command( PCD8544_SETBIAS ) self._buffer = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0xFC, 0xFE, 0xFF, 0xFC, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF0, 0xF0, 0xE0, 0xE0, 0xC0, 0x80, 0xC0, 0xFC, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE7, 0xC7, 0xC7, 0x87, 0x8F, 0x9F, 0x9F, 0xFF, 0xFF, 0xFF, 0xC1, 0xC0, 0xE0, 0xFC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xFC, 0xFC, 0xFC, 0xFE, 0xFE, 0xFE, 0xFC, 0xFC, 0xF8, 0xF8, 0xF0, 0xE0, 0xC0, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0xF1, 0xFB, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x1F, 0x0F, 0x0F, 0x87, 0xE7, 0xFF, 0xFF, 0xFF, 0x1F, 0x1F, 0x3F, 0xF9, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xFD, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0x0F, 0x07, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x7E, 0x3F, 0x3F, 0x0F, 0x1F, 0xFF, 0xFF, 0xFF, 0xFC, 0xF0, 0xE0, 0xF1, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xF0, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0F, 0x1F, 0x3F, 0x7F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x7F, 0x1F, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ]
def main(args):
# setup
GPIO.setmode(GPIO.BCM)
GPIO.setup(DC, GPIO.OUT)
GPIO.setup(RST, GPIO.OUT)
GPIO.setup(LED, GPIO.OUT)
GPIO.output(LED, GPIO.HIGH)
# SPI.open( SPIDEV, mode = SPIMODE, delay = SPIDELAY, bits_per_word = SPIBPW, speed = SPISPEED )
SPI.open(SPIDEV, speed=4000000)
# initialize device, set contrast
lcd_reset()
lcd_extended_command(PCD8544_SETBIAS | 4) # set bias
lcd_set_contrast(LCDCONTRAST)
# Clear display
lcd_clear()
lcd_display()
# Create blank image for drawing
# Make sure to create new image with mode '1' for 1-bit color.
image = Image.new('1', (LCDWIDTH, LCDHEIGHT))
# Get drawing object to draw on image.
draw = ImageDraw.Draw(image)
# Draw a white filled box to clear the image.
draw.rectangle((0, 0, LCDWIDTH - 1, LCDHEIGHT - 1), outline=1, fill=1)
# Draw some shapes.
draw.ellipse((2, 2, 22, 22), outline=0, fill=1)
draw.rectangle((24, 2, 44, 22), outline=0, fill=1)
draw.polygon([(46, 22), (56, 2), (66, 22)], outline=0, fill=1)
draw.line((68, 22, 81, 2), fill=0)
draw.line((68, 2, 81, 22), fill=0)
# Load default font.
font = ImageFont.load_default()
# Alternatively load a TTF font.
# some nice fonts to try: http://www.dafont.com/bitmap.php
# font = ImageFont.truetype( 'Minecraftia.ttf', 8 )
# Write some text.
draw.text((8, 30), 'Hello World!', 0, font=font)
# Display image
lcd_image(image)
lcd_display()
time.sleep(10)
lcd_clear()
lcd_display()
while True:
draw.ellipse((18, 0, 65, 47), outline=0, fill=0)
clk_hr = time.localtime().tm_hour
if clk_hr > 12:
clk_hr -= 12
clk_min = time.localtime().tm_min
center_x = 42
center_y = 24
hr_end_x = 10 * math.cos(
math.radians(clk_hr * 5 * 6) - math.radians(90)) + center_x
hr_end_y = 10 * math.sin(
math.radians(clk_hr * 5 * 6) - math.radians(90)) + center_y
min_end_x = 15 * math.cos(
math.radians(clk_min * 6) - math.radians(90)) + center_x
min_end_y = 15 * math.sin(
math.radians(clk_min * 6) - math.radians(90)) + center_y
draw.line((center_x, center_y, hr_end_x, hr_end_y), 1)
draw.line((center_x, center_y, min_end_x, min_end_y), 1)
lcd_image(image)
lcd_display()
time.sleep(60)
GPIO.cleanup()
SPI.close()
return 0
def lcd_command(c):
"""Send command byte to display """
# DC pin low signals command byte.
GPIO.output(DC, GPIO.LOW)
SPI.write([c])
def main(args):
# setup
GPIO.setmode(GPIO.BCM)
GPIO.setup(DC, GPIO.OUT)
GPIO.setup(RST, GPIO.OUT)
GPIO.setup(LED, GPIO.OUT)
# GPIO.output( LED, GPIO.HIGH )
# SPI.open( SPIDEV, mode = SPIMODE, delay = SPIDELAY, bits_per_word = SPIBPW, speed = SPISPEED )
SPI.open(SPIDEV, speed=4000000)
# initialize device, set contrast
lcd_reset()
lcd_extended_command(PCD8544_SETBIAS | 4) # set bias
lcd_set_contrast(LCDCONTRAST)
# Clear display
lcd_clear()
lcd_display()
# Create blank image for drawing
# Make sure to create new image with mode '1' for 1-bit color.
image = Image.new('1', (LCDWIDTH, LCDHEIGHT))
# Get drawing object to draw on image.
draw = ImageDraw.Draw(image)
draw.rectangle((0, 0, LCDWIDTH - 1, LCDHEIGHT - 1), outline=1, fill=1)
while True:
draw.ellipse((18, 0, 65, 47), outline=0, fill=0)
clk_hr = time.localtime().tm_hour
if clk_hr > 12:
clk_hr -= 12
clk_min = time.localtime().tm_min
center_x = 42
center_y = 24
hr_end_x = 10 * math.cos(
math.radians(clk_hr * 5 * 6) - math.radians(90)) + center_x
hr_end_y = 10 * math.sin(
math.radians(clk_hr * 5 * 6) - math.radians(90)) + center_y
min_end_x = 15 * math.cos(
math.radians(clk_min * 6) - math.radians(90)) + center_x
min_end_y = 15 * math.sin(
math.radians(clk_min * 6) - math.radians(90)) + center_y
draw.line((center_x, center_y, hr_end_x, hr_end_y), 1)
draw.line((center_x, center_y, min_end_x, min_end_y), 1)
lcd_image(image)
lcd_display()
time.sleep(60)
GPIO.cleanup()
SPI.close()
return 0
def command( self, c ): """Send command byte to display """ # DC pin low signals command byte GPIO.output( self._dc, GPIO.LOW ) _rslt = SPI.write( [ c ] )
def cleanup( self ): GPIO.cleanup() _rslt = SPI.close()