lcd = SMemLCD(args.device)
img = PIL.Image.new('1', (WIDTH, HEIGHT))
draw = PIL.ImageDraw.Draw(img)
if args.font:
font = PIL.ImageFont.truetype(args.font[0], size=30)
else:
font = PIL.ImageFont.load_default()
for i in range(60, -1, -1):
img.paste(0)
center(draw, 60, 'smemlcd library demo', font)
s = 'closing in {:02d}...'.format(i)
center(draw, 100, s, font)
draw.arc(((180, 180), (220, 220)), 0, 360, fill='white')
draw.pieslice(((180, 180), (220, 220)),
-90, (60 - i) * 6 - 90,
outline='white')
t1 = time.time()
lcd.write(img.tobytes())
print('lcd writing time', round(time.time() - t1, 4))
time.sleep(1)
# vim: sw=4:et:ai
# View Loop
stream.seek(0)
for foo in camera.capture_continuous(stream,
format='jpeg',
use_video_port=True,
resize=(S_WIDTH, S_HEIGHT),
splitter_port=1):
t1 = time.time()
stream.seek(
0
) # "Rewind" the stream to the beginning so we can read its content
image_source = Image.open(stream)
imageInverted = ImageOps.invert(image_source)
# convert image to black or white and send to LCD
lcd.write(imageInverted.convert('1').tobytes())
stream.seek(0)
# print('Live view : capture and display time: %f' % (time.time() - t1))
if GPIO.event_detected(SHOT_PIN):
liveViewThread.takeAshot = True
break
if GPIO.event_detected(PRINT_PIN):
liveViewThread.exitNOshot = True
break
# Wait the picture is taken
liveViewThread.join(5)
# Set current file number if not set yet
if currentFileNumber == -1:
lcd = SMemLCD('/dev/spidev0.0')
try:
t1 = time.time()
camera.capture(stream, format='jpeg', use_video_port=True)
t2 = time.time()
stream.seek(0) # "Rewind" the stream to the beginning so we can read its content
image_source = Image.open(stream)
imageResized = image_source.resize((WIDTH, HEIGHT), Image.ANTIALIAS)
imageEnancer = ImageEnhance.Contrast(imageResized)
imageContrasted = imageEnancer.enhance(2)
imageInverted = PIL.ImageOps.invert(imageContrasted)
imagedithered = imageInverted.convert('1') # convert image to black or white
# GPIO.output(22, 1)
lcd.write(imagedithered.tobytes())
# GPIO.output(22, 0)
stream.seek(0) # "Rewind" the stream to the beginning so we can read its content
print('capture time: %f, process time %f' % (t1 - t2, time.time() - t2))
t1 = time.time()
imageRotated = image_source.rotate(90)
printer = Adafruit_Thermal("/dev/ttyAMA0", 115200, timeout=0, rtscts=True)
printer.printImage(imageRotated, False)
printer.feed(3)
finally:
GPIO.cleanup()
camera.close()
camera.start_preview()
camera.contrast = 25
time.sleep(2)
lcd = SMemLCD('/dev/spidev0.0')
for i in range(100, -1, -1):
t1 = time.time()
camera.capture(stream,
format='jpeg',
use_video_port=True,
resize=(WIDTH, HEIGHT))
stream.seek(
0) # "Rewind" the stream to the beginning so we can read its content
image = Image.open(stream)
image = image.convert('L') # convert image to black and white
image = PIL.ImageOps.invert(image)
image = image.convert('1') # convert image to black and white
GPIO.output(22, 1)
lcd.write(image.tobytes())
GPIO.output(22, 0)
stream.seek(
0) # "Rewind" the stream to the beginning so we can read its content
print('lcd writing time: %f' % (round(time.time() - t1, 4)))
GPIO.cleanup()
if __name__ == '__main__':
pass
img = PIL.Image.new('1', (WIDTH, HEIGHT))
draw = PIL.ImageDraw.Draw(img)
if args.font:
font = PIL.ImageFont.truetype(args.font[0], size=30)
else:
font = PIL.ImageFont.load_default()
for i in range(60, -1, -1):
start = time.monotonic()
img.paste(0)
center(draw, 60, 'smemlcd library demo', font)
s = 'closing in {:02d}...'.format(i)
center(draw, 100, s, font)
draw.rectangle((5, 120, 395, 140), outline='white')
draw.rectangle((6, 121, 6 + 393 * (60 - i) / 60, 139), outline='white', fill='white')
sw = time.monotonic()
lcd.write(img.tobytes())
end = time.monotonic()
print('time: process={:.4f}, write={:.4f}'.format(end - start, end - sw))
time.sleep(0.2)
lcd.close()
# vim: sw=4:et:ai