nemunaire/waveshareteam-e-Paper
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significant increase of speed for 7in5 and 7in5_HD

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dev-ng 2021-01-14 21:19:52 +01:00
commit c950cc04c0
3 changed files with 89 additions and 112 deletions
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94
RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd7in5_HD.py
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@ -65,6 +65,12 @@ class EPD:
epdconfig.spi_writebyte([data])
epdconfig.digital_write(self.cs_pin, 1)
def send_data2(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 ReadBusy(self):
logging.debug("e-Paper busy")
busy = epdconfig.digital_read(self.busy_pin)
@ -90,31 +96,35 @@ class EPD:
self.ReadBusy();
self.send_command(0x0C); # Soft start setting
self.send_data(0xAE);
self.send_data(0xC7);
self.send_data(0xC3);
self.send_data(0xC0);
self.send_data(0x40);
self.send_data2([0xAE, 0xC7, 0xC3, 0xC0, 0x40])
#self.send_data(0xAE);
#self.send_data(0xC7);
#self.send_data(0xC3);
#self.send_data(0xC0);
#self.send_data(0x40);
self.send_command(0x01); # Set MUX as 527
self.send_data(0xAF);
self.send_data(0x02);
self.send_data(0x01);#0x01
self.send_data2([0xAF, 0x02, 0x01])
#self.send_data(0xAF);
#self.send_data(0x02);
#self.send_data(0x01);#0x01
self.send_command(0x11); # Data entry mode
self.send_data(0x01);
self.send_command(0x44);
self.send_data(0x00); # RAM x address start at 0
self.send_data(0x00);
self.send_data(0x6F);
self.send_data(0x03);
self.send_data2([0x00, 0x00, 0x6F, 0x03]) # RAM x address start at 0
#self.send_data(0x00); # RAM x address start at 0
#self.send_data(0x00);
#self.send_data(0x6F);
#self.send_data(0x03);
self.send_command(0x45);
self.send_data(0xAF);
self.send_data(0x02);
self.send_data(0x00);
self.send_data(0x00);
self.send_data2([0xAF, 0x02, 0x00, 0x00])
#self.send_data(0xAF);
#self.send_data(0x02);
#self.send_data(0x00);
#self.send_data(0x00);
self.send_command(0x3C); # VBD
self.send_data(0x05); # LUT1, for white
@ -129,46 +139,32 @@ class EPD:
self.ReadBusy();
self.send_command(0x4E); # set RAM x address count to 0;
self.send_data(0x00);
self.send_data(0x00);
self.send_data2([0x00, 0x00])
self.send_command(0x4F);
self.send_data(0x00);
self.send_data(0x00);
self.send_data2([0x00, 0x00])
# EPD hardware init end
return 0
def getbuffer(self, image):
# logging.debug("bufsiz = ",int(self.width/8) * self.height)
buf = [0xFF] * (int(self.width/8) * self.height)
image_monocolor = image.convert('1')
imwidth, imheight = image_monocolor.size
pixels = image_monocolor.load()
# logging.debug("imwidth = %d, imheight = %d",imwidth,imheight)
img = image
imwidth, imheight = img.size
if(imwidth == self.width and imheight == self.height):
logging.debug("Vertical")
for y in range(imheight):
for x in range(imwidth):
# Set the bits for the column of pixels at the current position.
if pixels[x, y] == 0:
buf[int((x + y * self.width) / 8)] &= ~(0x80 >> (x % 8))
img = img.convert('1')
elif(imwidth == self.height and imheight == self.width):
logging.debug("Horizontal")
for y in range(imheight):
for x in range(imwidth):
newx = y
newy = self.height - x - 1
if pixels[x, y] == 0:
buf[int((newx + newy*self.width) / 8)] &= ~(0x80 >> (y % 8))
img = img.rotate(90, expand=True).convert('1')
else:
logging.warning("Wrong image dimensions: must be " + str(self.width) + "x" + str(self.height))
# return a blank buffer
return [0x00] * (int(self.width/8) * self.height)
buf = bytearray(img.tobytes('raw'))
return buf
def display(self, image):
self.send_command(0x4F);
self.send_data(0x00);
self.send_data(0x00);
self.send_data2([0x00, 0x00])
self.send_command(0x24);
for i in range(0, int(self.width * self.height / 8)):
self.send_data(image[i]);
self.send_data2(image)
self.send_command(0x22);
self.send_data(0xF7);#Load LUT from MCU(0x32)
self.send_command(0x20);
@ -176,16 +172,14 @@ class EPD:
self.ReadBusy();
def Clear(self):
buf = [0xff] * int(self.width * self.height / 8)
self.send_command(0x4F);
self.send_data(0x00);
self.send_data(0x00);
self.send_data2([0x00, 0x00])
self.send_command(0x24)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(0xff)
self.send_data2(buf)
self.send_command(0x26)
for i in range(0, int(self.width * self.height / 8)):
self.send_data(0xff)
self.send_data2(buf)
self.send_command(0x22);
self.send_data(0xF7);#Load LUT from MCU(0x32)