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pwnagotchi/pwnagotchi/ui/hw/libs/waveshare/v4in26/epd4in26.py
Jeroen Oudshoorn c46346de52 Display update
2024-01-12 18:42:47 +01:00

516 lines
17 KiB
Python
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# *****************************************************************************
# * | File : epd4in26.py
# * | Author : Waveshare team
# * | Function : Electronic paper driver
# * | Info :
# *----------------
# * | This version: V1.0
# * | Date : 2023-12-20
# # | Info : python demo
# -----------------------------------------------------------------------------
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documnetation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
import logging
from .. import epdconfig
# Display resolution
EPD_WIDTH = 800
EPD_HEIGHT = 480
GRAY1 = 0xff # white
GRAY2 = 0xC0
GRAY3 = 0x80 # gray
GRAY4 = 0x00 # Blackest
logger = logging.getLogger(__name__)
class EPD:
def __init__(self):
self.reset_pin = epdconfig.RST_PIN
self.dc_pin = epdconfig.DC_PIN
self.busy_pin = epdconfig.BUSY_PIN
self.cs_pin = epdconfig.CS_PIN
self.width = EPD_WIDTH
self.height = EPD_HEIGHT
self.GRAY1 = GRAY1 # white
self.GRAY2 = GRAY2
self.GRAY3 = GRAY3 # gray
self.GRAY4 = GRAY4 # Blackest
LUT_DATA_4Gray = [ # #112bytes
0x80, 0x48, 0x4A, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x0A, 0x48, 0x68, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x88, 0x48, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xA8, 0x48, 0x45, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x07, 0x1E, 0x1C, 0x02, 0x00,
0x05, 0x01, 0x05, 0x01, 0x02,
0x08, 0x01, 0x01, 0x04, 0x04,
0x00, 0x02, 0x00, 0x02, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x01,
0x22, 0x22, 0x22, 0x22, 0x22,
0x17, 0x41, 0xA8, 0x32, 0x30,
0x00, 0x00]
# Hardware reset
def reset(self):
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(20)
epdconfig.digital_write(self.reset_pin, 0)
epdconfig.delay_ms(2)
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(20)
def send_command(self, command):
epdconfig.digital_write(self.dc_pin, 0)
epdconfig.digital_write(self.cs_pin, 0)
epdconfig.spi_writebyte([command])
epdconfig.digital_write(self.cs_pin, 1)
def send_data(self, data):
epdconfig.digital_write(self.dc_pin, 1)
epdconfig.digital_write(self.cs_pin, 0)
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.writebytes2(data)
epdconfig.digital_write(self.cs_pin, 1)
def ReadBusy(self):
logger.debug("e-Paper busy")
busy = epdconfig.digital_read(self.busy_pin)
while (busy == 1):
busy = epdconfig.digital_read(self.busy_pin)
epdconfig.delay_ms(20)
epdconfig.delay_ms(20)
logger.debug("e-Paper busy release")
def TurnOnDisplay(self):
self.send_command(0x22) # Display Update Control
self.send_data(0xF7)
self.send_command(0x20) # Activate Display Update Sequence
self.ReadBusy()
def TurnOnDisplay_Fast(self):
self.send_command(0x22) # Display Update Control
self.send_data(0xC7)
self.send_command(0x20) # Activate Display Update Sequence
self.ReadBusy()
def TurnOnDisplay_Part(self):
self.send_command(0x22) # Display Update Control
self.send_data(0xFF)
self.send_command(0x20) # Activate Display Update Sequence
self.ReadBusy()
def TurnOnDisplay_4GRAY(self):
self.send_command(0x22) # Display Update Control
self.send_data(0xC7)
self.send_command(0x20) # Activate Display Update Sequence
self.ReadBusy()
'''
function : Setting the display window
parameter:
xstart : X-axis starting position
ystart : Y-axis starting position
xend : End position of X-axis
yend : End position of Y-axis
'''
def SetWindow(self, x_start, y_start, x_end, y_end):
self.send_command(0x44) # SET_RAM_X_ADDRESS_START_END_POSITION
self.send_data(x_start & 0xFF)
self.send_data((x_start >> 8) & 0x03)
self.send_data(x_end & 0xFF)
self.send_data((x_end >> 8) & 0x03)
self.send_command(0x45) # SET_RAM_Y_ADDRESS_START_END_POSITION
self.send_data(y_start & 0xFF)
self.send_data((y_start >> 8) & 0xFF)
self.send_data(y_end & 0xFF)
self.send_data((y_end >> 8) & 0xFF)
'''
function : Set Cursor
parameter:
x : X-axis starting position
y : Y-axis starting position
'''
def SetCursor(self, x, y):
self.send_command(0x4E) # SET_RAM_X_ADDRESS_COUNTER
# x point must be the multiple of 8 or the last 3 bits will be ignored
self.send_data(x & 0xFF)
self.send_data((x >> 8) & 0x03)
self.send_command(0x4F) # SET_RAM_Y_ADDRESS_COUNTER
self.send_data(y & 0xFF)
self.send_data((y >> 8) & 0xFF)
def init(self):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.ReadBusy()
self.send_command(0x12) # SWRESET
self.ReadBusy()
self.send_command(0x18) # use the internal temperature sensor
self.send_data(0x80)
self.send_command(0x0C) # set soft start
self.send_data(0xAE)
self.send_data(0xC7)
self.send_data(0xC3)
self.send_data(0xC0)
self.send_data(0x80)
self.send_command(0x01) # drive output control
self.send_data((self.height - 1) % 256) # Y
self.send_data((self.height - 1) // 256) # Y
self.send_data(0x02)
self.send_command(0x3C) # Border Border setting
self.send_data(0x01)
self.send_command(0x11) # data entry mode
self.send_data(0x01) # X-mode x+ y-
self.SetWindow(0, self.height - 1, self.width - 1, 0)
self.SetCursor(0, 0)
self.ReadBusy()
# EPD hardware init end
return 0
def init_Fast(self):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.ReadBusy()
self.send_command(0x12) # SWRESET
self.ReadBusy()
self.send_command(0x18) # use the internal temperature sensor
self.send_data(0x80)
self.send_command(0x0C) # set soft start
self.send_data(0xAE)
self.send_data(0xC7)
self.send_data(0xC3)
self.send_data(0xC0)
self.send_data(0x80)
self.send_command(0x01) # drive output control
self.send_data((self.height - 1) % 256) # Y
self.send_data((self.height - 1) // 256) # Y
self.send_data(0x02)
self.send_command(0x3C) # Border Border setting
self.send_data(0x01)
self.send_command(0x11) # data entry mode
self.send_data(0x01) # X-mode x+ y-
self.SetWindow(0, self.height - 1, self.width - 1, 0)
self.SetCursor(0, 0)
self.ReadBusy()
# TEMP (1.5s)
self.send_command(0x1A)
self.send_data(0x5A)
self.send_command(0x22)
self.send_data(0x91)
self.send_command(0x20)
self.ReadBusy()
# EPD hardware init end
return 0
def Lut(self):
self.send_command(0x32)
for count in range(0, 105):
self.send_data(self.LUT_DATA_4Gray[count])
self.send_command(0x03) # VGH
self.send_data(self.LUT_DATA_4Gray[105])
self.send_command(0x04) #
self.send_data(self.LUT_DATA_4Gray[106]) # VSH1
self.send_data(self.LUT_DATA_4Gray[107]) # VSH2
self.send_data(self.LUT_DATA_4Gray[108]) # VSL
self.send_command(0x2C) # VCOM Voltage
self.send_data(self.LUT_DATA_4Gray[109]) # 0x1C
def init_4GRAY(self):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.ReadBusy()
self.send_command(0x12) # SWRESET
self.ReadBusy()
self.send_command(0x18) # use the internal temperature sensor
self.send_data(0x80)
self.send_command(0x0C) # set soft start
self.send_data(0xAE)
self.send_data(0xC7)
self.send_data(0xC3)
self.send_data(0xC0)
self.send_data(0x80)
self.send_command(0x01) # drive output control
self.send_data((self.height - 1) % 256) # Y
self.send_data((self.height - 1) // 256) # Y
self.send_data(0x02)
self.send_command(0x3C) # Border Border setting
self.send_data(0x01)
self.send_command(0x11) # data entry mode
self.send_data(0x01) # X-mode x+ y-
self.SetWindow(0, self.height - 1, self.width - 1, 0)
self.SetCursor(0, 0)
self.ReadBusy()
self.Lut()
# EPD hardware init end
return 0
def getbuffer(self, image):
# logger.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()
# logger.debug("imwidth = %d, imheight = %d",imwidth,imheight)
if imwidth == self.width and imheight == self.height:
logger.debug("Horizontal")
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))
elif imwidth == self.height and imheight == self.width:
logger.debug("Vertical")
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))
return buf
def getbuffer_4Gray(self, image):
# logger.debug("bufsiz = ",int(self.width/8) * self.height)
buf = [0xFF] * (int(self.width / 4) * self.height)
image_monocolor = image.convert('L')
imwidth, imheight = image_monocolor.size
pixels = image_monocolor.load()
i = 0
# logger.debug("imwidth = %d, imheight = %d",imwidth,imheight)
if (imwidth == self.width and imheight == self.height):
logger.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] == 0xC0):
pixels[x, y] = 0x80
elif (pixels[x, y] == 0x80):
pixels[x, y] = 0x40
i = i + 1
if (i % 4 == 0):
buf[int((x + (y * self.width)) / 4)] = (
(pixels[x - 3, y] & 0xc0) | (pixels[x - 2, y] & 0xc0) >> 2 | (
pixels[x - 1, y] & 0xc0) >> 4 | (pixels[x, y] & 0xc0) >> 6)
elif (imwidth == self.height and imheight == self.width):
logger.debug("Horizontal")
for x in range(imwidth):
for y in range(imheight):
newx = y
newy = self.height - x - 1
if (pixels[x, y] == 0xC0):
pixels[x, y] = 0x80
elif (pixels[x, y] == 0x80):
pixels[x, y] = 0x40
i = i + 1
if (i % 4 == 0):
buf[int((newx + (newy * self.width)) / 4)] = (
(pixels[x, y - 3] & 0xc0) | (pixels[x, y - 2] & 0xc0) >> 2 | (
pixels[x, y - 1] & 0xc0) >> 4 | (pixels[x, y] & 0xc0) >> 6)
return buf
def display(self, image):
self.send_command(0x24)
self.send_data2(image)
self.TurnOnDisplay()
def display_Base(self, image):
self.send_command(0x24)
self.send_data2(image)
self.send_command(0x26)
self.send_data2(image)
self.TurnOnDisplay()
def display_Fast(self, image):
self.send_command(0x24)
self.send_data2(image)
self.TurnOnDisplay_Fast()
def display_Partial(self, Image):
# Reset
self.reset()
self.send_command(0x18) # BorderWavefrom
self.send_data(0x80)
self.send_command(0x3C) # BorderWavefrom
self.send_data(0x80)
self.send_command(0x01) # drive output control
self.send_data((self.height - 1) % 256) # Y
self.send_data((self.height - 1) // 256) # Y
self.send_command(0x11) # data entry mode
self.send_data(0x01) # X-mode x+ y-
self.SetWindow(0, self.height - 1, self.width - 1, 0)
self.SetCursor(0, 0)
self.send_command(0x24) # Write Black and White image to RAM
self.send_data2(Image)
self.TurnOnDisplay_Part()
def display_4Gray(self, image):
self.send_command(0x24)
for i in range(0, 48000): # 5808*4 46464
temp3 = 0
for j in range(0, 2):
temp1 = image[i * 2 + j]
for k in range(0, 2):
temp2 = temp1 & 0xC0
if (temp2 == 0xC0):
temp3 |= 0x00
elif (temp2 == 0x00):
temp3 |= 0x01
elif (temp2 == 0x80):
temp3 |= 0x01
else: # 0x40
temp3 |= 0x00
temp3 <<= 1
temp1 <<= 2
temp2 = temp1 & 0xC0
if (temp2 == 0xC0):
temp3 |= 0x00
elif (temp2 == 0x00):
temp3 |= 0x01
elif (temp2 == 0x80):
temp3 |= 0x01
else: # 0x40
temp3 |= 0x00
if (j != 1 or k != 1):
temp3 <<= 1
temp1 <<= 2
self.send_data(temp3)
self.send_command(0x26)
for i in range(0, 48000): # 5808*4 46464
temp3 = 0
for j in range(0, 2):
temp1 = image[i * 2 + j]
for k in range(0, 2):
temp2 = temp1 & 0xC0
if (temp2 == 0xC0):
temp3 |= 0x00
elif (temp2 == 0x00):
temp3 |= 0x01
elif (temp2 == 0x80):
temp3 |= 0x00
else: # 0x40
temp3 |= 0x01
temp3 <<= 1
temp1 <<= 2
temp2 = temp1 & 0xC0
if (temp2 == 0xC0):
temp3 |= 0x00
elif (temp2 == 0x00):
temp3 |= 0x01
elif (temp2 == 0x80):
temp3 |= 0x00
else: # 0x40
temp3 |= 0x01
if (j != 1 or k != 1):
temp3 <<= 1
temp1 <<= 2
self.send_data(temp3)
self.TurnOnDisplay_4GRAY()
def Clear(self):
self.send_command(0x24)
self.send_data2([0xFF] * (int(self.width / 8) * self.height))
self.send_command(0x26)
self.send_data2([0xFF] * (int(self.width / 8) * self.height))
self.TurnOnDisplay()
def sleep(self):
self.send_command(0x10) # DEEP_SLEEP
self.send_data(0x01)
epdconfig.delay_ms(2000)
epdconfig.module_exit()
### END OF FILE ###
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