Fixed printing errors

This commit is contained in:
Maximilian Giller 2019-02-28 21:58:38 +01:00
parent 60b94c6783
commit ae24eb7413
2 changed files with 22 additions and 22 deletions

View file

@ -31,32 +31,32 @@ class Epd7in5Adapter (EpdAdapter):
self.wait_until_idle() self.wait_until_idle()
def get_frame_buffer (self, image): def get_frame_buffer (self, image):
buf = [0x00] * int(self.width * self.height / 8) buf = [0x00] * int(self.height * self.width / 8)
# Set buffer to value of Python Imaging Library image. # Set buffer to value of Python Imaging Library image.
# Image must be in mode 1. # Image must be in mode 1.
image_monocolor = image.convert('1') #with ot withour dithering? image_monocolor = image.convert('1') #with ot withour dithering?
imwidth, imheight = image_monocolor.size imwidth, imheight = image_monocolor.size
if imwidth != self.width or imheight != self.height: if imwidth != self.height or imheight != self.width:
raise ValueError('Image must be same dimensions as display \ raise ValueError('Image must be same dimensions as display \
({0}x{1}).' .format(self.width, self.height)) ({0}x{1}).' .format(self.height, self.width))
pixels = image_monocolor.load() pixels = image_monocolor.load()
for y in range(self.height): for y in range(self.width):
for x in range(self.width): for x in range(self.height):
# Set the bits for the column of pixels at the current position. # Set the bits for the column of pixels at the current position.
if pixels[x, y] != 0: if pixels[x, y] != 0:
buf[int((x + y * self.width) / 8)] |= 0x80 >> (x % 8) buf[int((x + y * self.height) / 8)] |= 0x80 >> (x % 8)
return buf return buf
def calibrate (self): def calibrate (self):
for _ in range(2): for _ in range(2):
self.init_render() self.init_render()
black = Image.new('1', (self.width, self.height), 'black') black = Image.new('1', (self.height, self.width), 'black')
print('calibrating black...') print('calibrating black...')
ImageDraw.Draw(black) ImageDraw.Draw(black)
self.display_frame(self.get_frame_buffer(black)) self.display_frame(self.get_frame_buffer(black))
white = Image.new('1', (self.width, self.height), 'white') white = Image.new('1', (self.height, self.width), 'white')
ImageDraw.Draw(white) ImageDraw.Draw(white)
print('calibrating white...') print('calibrating white...')
self.display_frame(self.get_frame_buffer(white)) self.display_frame(self.get_frame_buffer(white))

View file

@ -8,7 +8,7 @@ class Epd7in5bAdapter (EpdAdapter):
def display_frame (self, frame_buffer): def display_frame (self, frame_buffer):
self.send_command(DATA_START_TRANSMISSION_1) self.send_command(DATA_START_TRANSMISSION_1)
for i in range(0, int(self.width / 4 * self.height)): for i in range(0, int(self.height / 4 * self.width)):
#the above line had to be modified due to python2 -> python3 #the above line had to be modified due to python2 -> python3
#the issue lies in division, which returns integers in python2 #the issue lies in division, which returns integers in python2
#but floats in python3 #but floats in python3
@ -38,44 +38,44 @@ class Epd7in5bAdapter (EpdAdapter):
self.wait_until_idle() self.wait_until_idle()
def get_frame_buffer (self, image): def get_frame_buffer (self, image):
buf = [ 0x00 ] * int(self.width * self.height / 4) buf = [ 0x00 ] * int(self.height * self.width / 4)
# Set buffer to value of Python Imaging Library image. # Set buffer to value of Python Imaging Library image.
# Image must be in mode L. # Image must be in mode L.
image_grayscale = image.convert('L', dither=None) image_grayscale = image.convert('L', dither=None)
imwidth, imheight = image_grayscale.size imwidth, imheight = image_grayscale.size
if imwidth != self.width or imheight != self.height: if imwidth != self.height or imheight != self.width:
raise ValueError('Image must be same dimensions as display \ raise ValueError('Image must be same dimensions as display \
({0}x{1}).' .format(self.width, self.height)) ({0}x{1}).' .format(self.height, self.width))
pixels = image_grayscale.load() pixels = image_grayscale.load()
for y in range(self.height): for y in range(self.width):
for x in range(self.width): for x in range(self.height):
# Set the bits for the column of pixels at the current # Set the bits for the column of pixels at the current
# position. # position.
if pixels[x, y] < 75: #was 64 # black if pixels[x, y] < 75: #was 64 # black
buf[int((x + y * self.width) / 4)] &= ~(0xC0 >> (x % 4 * 2)) buf[int((x + y * self.height) / 4)] &= ~(0xC0 >> (x % 4 * 2))
elif pixels[x, y] < 110: #was 192 # convert gray to red elif pixels[x, y] < 110: #was 192 # convert gray to red
buf[int((x + y * self.width) / 4)] &= ~(0xC0 >> (x % 4 * 2)) buf[int((x + y * self.height) / 4)] &= ~(0xC0 >> (x % 4 * 2))
buf[int((x + y * self.width) / 4)] |= 0x40 >> (x % 4 * 2) buf[int((x + y * self.height) / 4)] |= 0x40 >> (x % 4 * 2)
else: # white else: # white
buf[int((x + y * self.width) / 4)] |= 0xC0 >> (x % 4 * 2) buf[int((x + y * self.height) / 4)] |= 0xC0 >> (x % 4 * 2)
return buf #due to python2 -> python3, int had to be added in 'get_frame return buf #due to python2 -> python3, int had to be added in 'get_frame
#_buffer #_buffer
def calibrate (self): def calibrate (self):
for _ in range(2): for _ in range(2):
self.init_render() self.init_render()
black = Image.new('1', (self.width, self.height), 'black') black = Image.new('1', (self.height, self.width), 'black')
print('calibrating black...') print('calibrating black...')
ImageDraw.Draw(black) ImageDraw.Draw(black)
self.display_frame(self.get_frame_buffer(black)) self.display_frame(self.get_frame_buffer(black))
red = Image.new('L', (self.width, self.height), 'red') red = Image.new('L', (self.height, self.width), 'red')
ImageDraw.Draw(red) ImageDraw.Draw(red)
print('calibrating red...') print('calibrating red...')
self.display_frame(self.get_frame_buffer(red)) self.display_frame(self.get_frame_buffer(red))
white = Image.new('1', (self.width, self.height), 'white') white = Image.new('1', (self.height, self.width), 'white')
ImageDraw.Draw(white) ImageDraw.Draw(white)
print('calibrating white...') print('calibrating white...')
self.display_frame(self.get_frame_buffer(white)) self.display_frame(self.get_frame_buffer(white))