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fix image(), working now. blinka demo improvements

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This commit is contained in:
ladyada 2019-09-28 00:12:52 -04:00
parent 30434cc6c3
commit 432dacf019
2 changed files with 28 additions and 28 deletions
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31
adafruit_epd/epd.py
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@ -340,24 +340,19 @@ class Adafruit_EPD: # pylint: disable=too-many-instance-attributes, too-many-pub
if imwidth != self.width or imheight != self.height:
raise ValueError('Image must be same dimensions as display ({0}x{1}).' \
.format(self.width, self.height))
if self.sram:
raise RuntimeError("PIL image is not for use with SRAM assist")
# Grab all the pixels from the image, faster than getpixel.
pix = image.load()
for y in iter(range(image.size[1])):
for x in iter(range(image.size[0])):
if x == 0:
x = 1
# clear out any display buffers
self.fill(Adafruit_EPD.WHITE)
for y in range(image.size[1]):
for x in range(image.size[0]):
pixel = pix[x, y]
addr = int(((self._width - x) * self._height + y)/8)
if pixel == (0xFF, 0, 0):
addr = addr + self._buffer1_size
current = self.sram.read8(addr)
if pixel in ((0xFF, 0, 0), (0, 0, 0)):
current = current & ~(1 << (7 - y%8))
else:
current = current | (1 << (7 - y%8))
self.sram.write8(addr, current)
if (pixel[0] >= 0x80) and (pixel[1] < 0x80) and (pixel[2] < 0x80):
# reddish
self.pixel(x, y, Adafruit_EPD.RED)
elif (pixel[0] < 0x80) and (pixel[1] < 0x80) and (pixel[2] < 0x80):
# dark
self.pixel(x, y, Adafruit_EPD.BLACK)

25
examples/epd_blinka.py
View file

@ -15,11 +15,14 @@ from adafruit_epd.ssd1675 import Adafruit_SSD1675 # pylint: disable=unused-impo
# create the spi device and pins we will need
spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
ecs = digitalio.DigitalInOut(board.D22)
dc = digitalio.DigitalInOut(board.D13)
srcs = digitalio.DigitalInOut(board.D6)
rst = digitalio.DigitalInOut(board.D19)
busy = digitalio.DigitalInOut(board.D26)
# create the spi device and pins we will need
spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
ecs = digitalio.DigitalInOut(board.D4)
dc = digitalio.DigitalInOut(board.D5)
srcs = None
rst = digitalio.DigitalInOut(board.D6) # can be None to not use this pin
busy = digitalio.DigitalInOut(board.D7) # can be None to not use this pin
# give them all to our driver
@ -34,7 +37,7 @@ display = Adafruit_IL0373(104, 212, spi, # 2.13" Tri-color display
cs_pin=ecs, dc_pin=dc, sramcs_pin=srcs,
rst_pin=rst, busy_pin=busy)
display.rotation = 3
# Create blank image for drawing.
# Make sure to create image with mode '1' for 1-bit color.
width = display.width
@ -50,13 +53,15 @@ display.fill(Adafruit_EPD.WHITE)
# Get drawing object to draw on image.
draw = ImageDraw.Draw(image)
# empty it
draw.rectangle((0, 0, width, height), fill=WHITE)
# Draw a white filled box to clear the image.
draw.rectangle((0,0,width,height), outline=BLACK, fill=WHITE)
# Draw an outline box
draw.rectangle((1, 1, width-2, height-2), outline=BLACK, fill=WHITE)
# Draw some shapes.
# First define some constants to allow easy resizing of shapes.
padding = 2
padding = 5
shape_width = 30
top = padding
bottom = height-padding
@ -78,7 +83,7 @@ draw.line((x, top, x+shape_width, bottom), fill=RED)
x += shape_width+padding
# Load default font.
font = ImageFont.load_default()
font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', 20)
# Alternatively load a TTF font. Make sure the .ttf font
# file is in the same directory as the python script!