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Merge pull request #146 from MediumFidelity/epd5in65f_performance_python

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Improve performance of the EPD 5.65 inch color E Ink when using Python
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SSYYL 2021-03-31 17:51:23 +08:00 • committed by GitHub
commit 8537d942cd
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1 changed files with 60 additions and 86 deletions
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104
RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd5in65f.py
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@ -32,6 +32,10 @@
import logging import logging
from . import epdconfig from . import epdconfig
import PIL
from PIL import Image
import io
# Display resolution # Display resolution
EPD_WIDTH = 600 EPD_WIDTH = 600
EPD_HEIGHT = 448 EPD_HEIGHT = 448
@ -74,6 +78,12 @@ class EPD:
epdconfig.spi_writebyte([data]) epdconfig.spi_writebyte([data])
epdconfig.digital_write(self.cs_pin, 1) epdconfig.digital_write(self.cs_pin, 1)
def send_data_bulk(self, data):
epdconfig.digital_write(self.dc_pin, 1)
epdconfig.digital_write(self.cs_pin, 0)
epdconfig.spi_writebyte2(data)
epdconfig.digital_write(self.cs_pin, 1)
def ReadBusyHigh(self): def ReadBusyHigh(self):
logging.debug("e-Paper busy") logging.debug("e-Paper busy")
while(epdconfig.digital_read(self.busy_pin) == 0): # 0: idle, 1: busy while(epdconfig.digital_read(self.busy_pin) == 0): # 0: idle, 1: busy
@ -130,59 +140,31 @@ class EPD:
return 0 return 0
def getbuffer(self, image): def getbuffer(self, image):
buf = [0x00] * int(self.width * self.height / 2) # Create a pallette with the 7 colors supported by the panel
image_monocolor = image.convert('RGB')#Picture mode conversion pal_image = Image.new("P", (1,1))
imwidth, imheight = image_monocolor.size pal_image.putpalette( (0,0,0, 255,255,255, 0,255,0, 0,0,255, 255,0,0, 255,255,0, 255,128,0) + (0,0,0)*249)
pixels = image_monocolor.load()
logging.debug('imwidth = %d imheight = %d ',imwidth, imheight) # Check if we need to rotate the image
imwidth, imheight = image.size
if(imwidth == self.width and imheight == self.height): if(imwidth == self.width and imheight == self.height):
for y in range(imheight): image_temp = image
for x in range(imwidth):
# Set the bits for the column of pixels at the current position.
Add = int((x + y * self.width) / 2)
Color = 0;
if (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0):
Color = 0
elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 255):
Color = 1
elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
Color = 2
elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 255):
Color = 3
elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0):
Color = 4
elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
Color = 5
elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 128 and pixels[x, y][2] == 0):
Color = 6
data_t = buf[Add]&(~(0xF0 >> ((x % 2)*4)))
buf[Add] = data_t | ((Color << 4) >> ((x % 2)*4));
elif(imwidth == self.height and imheight == self.width): elif(imwidth == self.height and imheight == self.width):
for y in range(imheight): image_temp = image.rotate(90, expand=True)
for x in range(imwidth): else:
newx = y logging.warning("Invalid image dimensions: %d x %d, expected %d x %d" % (imwidth, imheight, self.width, self.height))
newy = self.height - x - 1
Add = int((newx + newy*self.width) / 2) # Convert the soruce image to the 7 colors, dithering if needed
Color = 0; image_7color = image_temp.convert("RGB").quantize(palette=pal_image)
if (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0): buf_7color = bytearray(image_7color.tobytes('raw'))
Color = 0
elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 255): # PIL does not support 4 bit color, so pack the 4 bits of color
Color = 1 # into a single byte to transfer to the panel
elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0): buf = [0x00] * int(self.width * self.height / 2)
Color = 2 idx = 0
elif (pixels[x, y][0] == 0 and pixels[x, y][1] == 0 and pixels[x, y][2] == 255): for i in range(0, len(buf_7color), 2):
Color = 3 buf[idx] = (buf_7color[i] << 4) + buf_7color[i+1]
elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 0 and pixels[x, y][2] == 0): idx += 1
Color = 4
elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 255 and pixels[x, y][2] == 0):
Color = 5
elif (pixels[x, y][0] == 255 and pixels[x, y][1] == 128 and pixels[x, y][2] == 0):
Color = 6
data_t = buf[Add]&(~(0xF0 >> ((newx % 2)*4)))
buf[Add] = data_t | ((Color << 4) >> ((newx % 2)*4));
return buf return buf
def display(self,image): def display(self,image):
@ -192,9 +174,8 @@ class EPD:
self.send_data(0x01) self.send_data(0x01)
self.send_data(0xC0) self.send_data(0xC0)
self.send_command(0x10) self.send_command(0x10)
for i in range(0, int(EPD_HEIGHT)):
for j in range(0, int(EPD_WIDTH/2)): self.send_data_bulk(image)
self.send_data((image[j+(int(EPD_WIDTH/2)*i)]))
self.send_command(0x04) #0x04 self.send_command(0x04) #0x04
self.ReadBusyHigh() self.ReadBusyHigh()
self.send_command(0x12) #0x12 self.send_command(0x12) #0x12
@ -210,17 +191,11 @@ class EPD:
self.send_data(0x01) self.send_data(0x01)
self.send_data(0xC0) self.send_data(0xC0)
self.send_command(0x10) self.send_command(0x10)
for i in range(0, int(EPD_HEIGHT)):
for j in range(0, int(EPD_WIDTH/2)): # Set all pixels to white
self.send_data(0x11) buf = [0x11] * int(self.width * self.height / 2)
#BLACK 0x00 /// 0000 self.send_data_bulk(buf)
#WHITE 0x11 /// 0001
#GREEN 0x22 /// 0010
#BLUE 0x33 /// 0011
#RED 0x44 /// 0100
#YELLOW 0x55 /// 0101
#ORANGE 0x66 /// 0110
#CLEAN 0x77 /// 0111 unavailable Afterimage
self.send_command(0x04) #0x04 self.send_command(0x04) #0x04
self.ReadBusyHigh() self.ReadBusyHigh()
self.send_command(0x12) #0x12 self.send_command(0x12) #0x12
@ -237,4 +212,3 @@ class EPD:
epdconfig.delay_ms(2000) epdconfig.delay_ms(2000)
epdconfig.module_exit() epdconfig.module_exit()