248 lines
7.7 KiB
Python
248 lines
7.7 KiB
Python
|
# *****************************************************************************
|
||
|
|
# * | File : epd7in3f.py
|
||
|
|
# * | Author : Waveshare team
|
||
|
|
# * | Function : Electronic paper driver
|
||
|
|
# * | Info :
|
||
|
|
# *----------------
|
||
|
|
# * | This version: V1.0
|
||
|
|
# * | Date : 2022-10-20
|
||
|
|
# # | 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
|
||
|
|
|
||
|
|
import PIL
|
||
|
|
from PIL import Image
|
||
|
|
import io
|
||
|
|
|
||
|
|
# Display resolution
|
||
|
|
EPD_WIDTH = 800
|
||
|
|
EPD_HEIGHT = 480
|
||
|
|
|
||
|
|
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.BLACK = 0x000000 # 0000 BGR
|
||
|
|
self.WHITE = 0xffffff # 0001
|
||
|
|
self.GREEN = 0x00ff00 # 0010
|
||
|
|
self.BLUE = 0xff0000 # 0011
|
||
|
|
self.RED = 0x0000ff # 0100
|
||
|
|
self.YELLOW = 0x00ffff # 0101
|
||
|
|
self.ORANGE = 0x0080ff # 0110
|
||
|
|
|
||
|
|
# Hardware reset
|
||
|
|
def reset(self):
|
||
|
|
epdconfig.digital_write(self.reset_pin, 1)
|
||
|
|
epdconfig.delay_ms(20)
|
||
|
|
epdconfig.digital_write(self.reset_pin, 0) # module reset
|
||
|
|
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)
|
||
|
|
|
||
|
|
# 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)
|
||
|
|
|
||
|
|
def ReadBusyH(self):
|
||
|
|
logger.debug("e-Paper busy H")
|
||
|
|
while(epdconfig.digital_read(self.busy_pin) == 0): # 0: busy, 1: idle
|
||
|
|
epdconfig.delay_ms(5)
|
||
|
|
logger.debug("e-Paper busy H release")
|
||
|
|
|
||
|
|
def TurnOnDisplay(self):
|
||
|
|
self.send_command(0x04) # POWER_ON
|
||
|
|
self.ReadBusyH()
|
||
|
|
|
||
|
|
self.send_command(0x12) # DISPLAY_REFRESH
|
||
|
|
self.send_data(0X00)
|
||
|
|
self.ReadBusyH()
|
||
|
|
|
||
|
|
self.send_command(0x02) # POWER_OFF
|
||
|
|
self.send_data(0X00)
|
||
|
|
self.ReadBusyH()
|
||
|
|
|
||
|
|
def init(self):
|
||
|
|
if (epdconfig.module_init() != 0):
|
||
|
|
return -1
|
||
|
|
# EPD hardware init start
|
||
|
|
self.reset()
|
||
|
|
self.ReadBusyH()
|
||
|
|
epdconfig.delay_ms(30)
|
||
|
|
|
||
|
|
self.send_command(0xAA) # CMDH
|
||
|
|
self.send_data(0x49)
|
||
|
|
self.send_data(0x55)
|
||
|
|
self.send_data(0x20)
|
||
|
|
self.send_data(0x08)
|
||
|
|
self.send_data(0x09)
|
||
|
|
self.send_data(0x18)
|
||
|
|
|
||
|
|
self.send_command(0x01)
|
||
|
|
self.send_data(0x3F)
|
||
|
|
self.send_data(0x00)
|
||
|
|
self.send_data(0x32)
|
||
|
|
self.send_data(0x2A)
|
||
|
|
self.send_data(0x0E)
|
||
|
|
self.send_data(0x2A)
|
||
|
|
|
||
|
|
self.send_command(0x00)
|
||
|
|
self.send_data(0x5F)
|
||
|
|
self.send_data(0x69)
|
||
|
|
|
||
|
|
self.send_command(0x03)
|
||
|
|
self.send_data(0x00)
|
||
|
|
self.send_data(0x54)
|
||
|
|
self.send_data(0x00)
|
||
|
|
self.send_data(0x44)
|
||
|
|
|
||
|
|
self.send_command(0x05)
|
||
|
|
self.send_data(0x40)
|
||
|
|
self.send_data(0x1F)
|
||
|
|
self.send_data(0x1F)
|
||
|
|
self.send_data(0x2C)
|
||
|
|
|
||
|
|
self.send_command(0x06)
|
||
|
|
self.send_data(0x6F)
|
||
|
|
self.send_data(0x1F)
|
||
|
|
self.send_data(0x1F)
|
||
|
|
self.send_data(0x22)
|
||
|
|
|
||
|
|
self.send_command(0x08)
|
||
|
|
self.send_data(0x6F)
|
||
|
|
self.send_data(0x1F)
|
||
|
|
self.send_data(0x1F)
|
||
|
|
self.send_data(0x22)
|
||
|
|
|
||
|
|
self.send_command(0x13) # IPC
|
||
|
|
self.send_data(0x00)
|
||
|
|
self.send_data(0x04)
|
||
|
|
|
||
|
|
self.send_command(0x30)
|
||
|
|
self.send_data(0x3C)
|
||
|
|
|
||
|
|
self.send_command(0x41) # TSE
|
||
|
|
self.send_data(0x00)
|
||
|
|
|
||
|
|
self.send_command(0x50)
|
||
|
|
self.send_data(0x3F)
|
||
|
|
|
||
|
|
self.send_command(0x60)
|
||
|
|
self.send_data(0x02)
|
||
|
|
self.send_data(0x00)
|
||
|
|
|
||
|
|
self.send_command(0x61)
|
||
|
|
self.send_data(0x03)
|
||
|
|
self.send_data(0x20)
|
||
|
|
self.send_data(0x01)
|
||
|
|
self.send_data(0xE0)
|
||
|
|
|
||
|
|
self.send_command(0x82)
|
||
|
|
self.send_data(0x1E)
|
||
|
|
|
||
|
|
self.send_command(0x84)
|
||
|
|
self.send_data(0x00)
|
||
|
|
|
||
|
|
self.send_command(0x86) # AGID
|
||
|
|
self.send_data(0x00)
|
||
|
|
|
||
|
|
self.send_command(0xE3)
|
||
|
|
self.send_data(0x2F)
|
||
|
|
|
||
|
|
self.send_command(0xE0) # CCSET
|
||
|
|
self.send_data(0x00)
|
||
|
|
|
||
|
|
self.send_command(0xE6) # TSSET
|
||
|
|
self.send_data(0x00)
|
||
|
|
return 0
|
||
|
|
|
||
|
|
def getbuffer(self, image):
|
||
|
|
# Create a pallette with the 7 colors supported by the panel
|
||
|
|
pal_image = Image.new("P", (1,1))
|
||
|
|
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)
|
||
|
|
|
||
|
|
# Check if we need to rotate the image
|
||
|
|
imwidth, imheight = image.size
|
||
|
|
if(imwidth == self.width and imheight == self.height):
|
||
|
|
image_temp = image
|
||
|
|
elif(imwidth == self.height and imheight == self.width):
|
||
|
|
image_temp = image.rotate(90, expand=True)
|
||
|
|
else:
|
||
|
|
logger.warning("Invalid image dimensions: %d x %d, expected %d x %d" % (imwidth, imheight, self.width, self.height))
|
||
|
|
|
||
|
|
# Convert the soruce image to the 7 colors, dithering if needed
|
||
|
|
image_7color = image_temp.convert("RGB").quantize(palette=pal_image)
|
||
|
|
buf_7color = bytearray(image_7color.tobytes('raw'))
|
||
|
|
|
||
|
|
# PIL does not support 4 bit color, so pack the 4 bits of color
|
||
|
|
# into a single byte to transfer to the panel
|
||
|
|
buf = [0x00] * int(self.width * self.height / 2)
|
||
|
|
idx = 0
|
||
|
|
for i in range(0, len(buf_7color), 2):
|
||
|
|
buf[idx] = (buf_7color[i] << 4) + buf_7color[i+1]
|
||
|
|
idx += 1
|
||
|
|
|
||
|
|
return buf
|
||
|
|
|
||
|
|
def display(self, image):
|
||
|
|
self.send_command(0x10)
|
||
|
|
self.send_data2(image)
|
||
|
|
|
||
|
|
self.TurnOnDisplay()
|
||
|
|
|
||
|
|
def Clear(self, color=0x11):
|
||
|
|
self.send_command(0x10)
|
||
|
|
self.send_data2([color] * int(self.height) * int(self.width/2))
|
||
|
|
|
||
|
|
self.TurnOnDisplay()
|
||
|
|
|
||
|
|
def sleep(self):
|
||
|
|
self.send_command(0x07) # DEEP_SLEEP
|
||
|
|
self.send_data(0XA5)
|
||
|
|
|
||
|
|
epdconfig.delay_ms(2000)
|
||
|
|
epdconfig.module_exit()
|
||
|
|
### END OF FILE ###
|
||
|
|
|