388 lines
12 KiB
Python
388 lines
12 KiB
Python
# *****************************************************************************
|
|
# * | File : epd2in13_V3.py
|
|
# * | Author : Waveshare team
|
|
# * | Function : Electronic paper driver
|
|
# * | Info :
|
|
# *----------------
|
|
# * | This version: V1.2
|
|
# * | Date : 2022-08-9
|
|
# # | 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 = 122
|
|
EPD_HEIGHT = 250
|
|
|
|
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
|
|
|
|
lut_partial_update= [
|
|
0x0,0x40,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x80,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x40,0x40,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x14,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x1,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x1,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x22,0x22,0x22,0x22,0x22,0x22,0x0,0x0,0x0,
|
|
0x22,0x17,0x41,0x00,0x32,0x36,
|
|
]
|
|
|
|
lut_full_update = [
|
|
0x80,0x4A,0x40,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x40,0x4A,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x80,0x4A,0x40,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x40,0x4A,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0xF,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0xF,0x0,0x0,0xF,0x0,0x0,0x2,
|
|
0xF,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x1,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
|
|
0x22,0x22,0x22,0x22,0x22,0x22,0x0,0x0,0x0,
|
|
0x22,0x17,0x41,0x0,0x32,0x36,
|
|
]
|
|
|
|
'''
|
|
function :Hardware reset
|
|
parameter:
|
|
'''
|
|
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)
|
|
|
|
'''
|
|
function :send command
|
|
parameter:
|
|
command : Command register
|
|
'''
|
|
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)
|
|
|
|
'''
|
|
function :send data
|
|
parameter:
|
|
data : Write data
|
|
'''
|
|
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)
|
|
|
|
# send a lot of data
|
|
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)
|
|
|
|
'''
|
|
function :Wait until the busy_pin goes LOW
|
|
parameter:
|
|
'''
|
|
def ReadBusy(self):
|
|
logger.debug("e-Paper busy")
|
|
while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy
|
|
epdconfig.delay_ms(10)
|
|
logger.debug("e-Paper busy release")
|
|
|
|
'''
|
|
function : Turn On Display
|
|
parameter:
|
|
'''
|
|
def TurnOnDisplay(self):
|
|
self.send_command(0x22) # Display Update Control
|
|
self.send_data(0xC7)
|
|
self.send_command(0x20) # Activate Display Update Sequence
|
|
self.ReadBusy()
|
|
|
|
'''
|
|
function : Turn On Display Part
|
|
parameter:
|
|
'''
|
|
def TurnOnDisplayPart(self):
|
|
self.send_command(0x22) # Display Update Control
|
|
self.send_data(0x0f) # fast:0x0c, quality:0x0f, 0xcf
|
|
self.send_command(0x20) # Activate Display Update Sequence
|
|
self.ReadBusy()
|
|
|
|
'''
|
|
function : Set lut
|
|
parameter:
|
|
lut : lut data
|
|
'''
|
|
def Lut(self, lut):
|
|
self.send_command(0x32)
|
|
for i in range(0, 153):
|
|
self.send_data(lut[i])
|
|
self.ReadBusy()
|
|
|
|
'''
|
|
function : Send lut data and configuration
|
|
parameter:
|
|
lut : lut data
|
|
'''
|
|
def SetLut(self, lut):
|
|
self.Lut(lut)
|
|
self.send_command(0x3f)
|
|
self.send_data(lut[153])
|
|
self.send_command(0x03) # gate voltage
|
|
self.send_data(lut[154])
|
|
self.send_command(0x04) # source voltage
|
|
self.send_data(lut[155]) # VSH
|
|
self.send_data(lut[156]) # VSH2
|
|
self.send_data(lut[157]) # VSL
|
|
self.send_command(0x2c) # VCOM
|
|
self.send_data(lut[158])
|
|
|
|
'''
|
|
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
|
|
# x point must be the multiple of 8 or the last 3 bits will be ignored
|
|
self.send_data((x_start>>3) & 0xFF)
|
|
self.send_data((x_end>>3) & 0xFF)
|
|
|
|
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_command(0x4F) # SET_RAM_Y_ADDRESS_COUNTER
|
|
self.send_data(y & 0xFF)
|
|
self.send_data((y >> 8) & 0xFF)
|
|
|
|
'''
|
|
function : Initialize the e-Paper register
|
|
parameter:
|
|
'''
|
|
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(0x01) #Driver output control
|
|
self.send_data(0xf9)
|
|
self.send_data(0x00)
|
|
self.send_data(0x00)
|
|
|
|
self.send_command(0x11) #data entry mode
|
|
self.send_data(0x03)
|
|
|
|
self.SetWindow(0, 0, self.width-1, self.height-1)
|
|
self.SetCursor(0, 0)
|
|
|
|
self.send_command(0x3c)
|
|
self.send_data(0x05)
|
|
|
|
self.send_command(0x21) # Display update control
|
|
self.send_data(0x00)
|
|
self.send_data(0x80)
|
|
|
|
self.send_command(0x18)
|
|
self.send_data(0x80)
|
|
|
|
self.ReadBusy()
|
|
|
|
self.SetLut(self.lut_full_update)
|
|
return 0
|
|
|
|
'''
|
|
function : Display images
|
|
parameter:
|
|
image : Image data
|
|
'''
|
|
def getbuffer(self, image):
|
|
img = image
|
|
imwidth, imheight = img.size
|
|
if(imwidth == self.width and imheight == self.height):
|
|
img = img.convert('1')
|
|
elif(imwidth == self.height and imheight == self.width):
|
|
# image has correct dimensions, but needs to be rotated
|
|
img = img.rotate(90, expand=True).convert('1')
|
|
else:
|
|
logger.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
|
|
|
|
'''
|
|
function : Sends the image buffer in RAM to e-Paper and displays
|
|
parameter:
|
|
image : Image data
|
|
'''
|
|
def display(self, image):
|
|
if self.width%8 == 0:
|
|
linewidth = int(self.width/8)
|
|
else:
|
|
linewidth = int(self.width/8) + 1
|
|
|
|
self.send_command(0x24)
|
|
for j in range(0, self.height):
|
|
for i in range(0, linewidth):
|
|
self.send_data(image[i + j * linewidth])
|
|
self.TurnOnDisplay()
|
|
|
|
'''
|
|
function : Sends the image buffer in RAM to e-Paper and partial refresh
|
|
parameter:
|
|
image : Image data
|
|
'''
|
|
def displayPartial(self, image):
|
|
epdconfig.digital_write(self.reset_pin, 0)
|
|
epdconfig.delay_ms(1)
|
|
epdconfig.digital_write(self.reset_pin, 1)
|
|
|
|
self.SetLut(self.lut_partial_update)
|
|
self.send_command(0x37)
|
|
self.send_data(0x00)
|
|
self.send_data(0x00)
|
|
self.send_data(0x00)
|
|
self.send_data(0x00)
|
|
self.send_data(0x00)
|
|
self.send_data(0x40)
|
|
self.send_data(0x00)
|
|
self.send_data(0x00)
|
|
self.send_data(0x00)
|
|
self.send_data(0x00)
|
|
|
|
self.send_command(0x3C) #BorderWavefrom
|
|
self.send_data(0x80)
|
|
|
|
self.send_command(0x22)
|
|
self.send_data(0xC0)
|
|
self.send_command(0x20)
|
|
self.ReadBusy()
|
|
|
|
self.SetWindow(0, 0, self.width - 1, self.height - 1)
|
|
self.SetCursor(0, 0)
|
|
|
|
self.send_command(0x24) # WRITE_RAM
|
|
# for j in range(0, self.height):
|
|
# for i in range(0, linewidth):
|
|
# self.send_data(image[i + j * linewidth])
|
|
self.send_data2(image)
|
|
self.TurnOnDisplayPart()
|
|
|
|
'''
|
|
function : Refresh a base image
|
|
parameter:
|
|
image : Image data
|
|
'''
|
|
def displayPartBaseImage(self, image):
|
|
self.send_command(0x24)
|
|
self.send_data2(image)
|
|
|
|
self.send_command(0x26)
|
|
self.send_data2(image)
|
|
self.TurnOnDisplay()
|
|
|
|
'''
|
|
function : Clear screen
|
|
parameter:
|
|
'''
|
|
def Clear(self, color=0xFF):
|
|
if self.width%8 == 0:
|
|
linewidth = int(self.width/8)
|
|
else:
|
|
linewidth = int(self.width/8) + 1
|
|
# logger.debug(linewidth)
|
|
|
|
self.send_command(0x24)
|
|
self.send_data2([color] * int(self.height * linewidth))
|
|
self.TurnOnDisplay()
|
|
|
|
'''
|
|
function : Enter sleep mode
|
|
parameter:
|
|
'''
|
|
def sleep(self):
|
|
self.send_command(0x10) #enter deep sleep
|
|
self.send_data(0x01)
|
|
|
|
epdconfig.delay_ms(2000)
|
|
epdconfig.module_exit()
|
|
|
|
### END OF FILE ###
|
|
|