# /***************************************************************************** # * | File : epd12in48.py # * | Author : Waveshare electrices # * | Function : Hardware underlying interface # * | Info : # *---------------- # * | This version: V1.0 # * | Date : 2019-11-01 # * | Info : # ******************************************************************************/ # 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 time import epdconfig import PIL from PIL import Image import io EPD_WIDTH = 1360//2 EPD_HEIGHT = 480 class EPD(): def __init__(self): self.width = EPD_WIDTH self.height = EPD_HEIGHT self.BLACK = 0x000000 # 00 BGR self.WHITE = 0xffffff # 01 self.YELLOW = 0x00ffff # 10 self.RED = 0x0000ff # 11 self.EPD_CS_M_PIN = epdconfig.EPD_CS_M_PIN self.EPD_CS_S_PIN = epdconfig.EPD_CS_S_PIN self.EPD_DC_PIN = epdconfig.EPD_DC_PIN self.EPD_RST_PIN = epdconfig.EPD_RST_PIN self.EPD_BUSY_PIN = epdconfig.EPD_BUSY_PIN self.EPD_PWR_PIN = epdconfig.EPD_PWR_PIN def Reset(self): epdconfig.digital_write(self.EPD_RST_PIN, 1) epdconfig.delay_ms(200) epdconfig.digital_write(self.EPD_RST_PIN, 0) # module reset epdconfig.delay_ms(2) epdconfig.digital_write(self.EPD_RST_PIN, 1) epdconfig.delay_ms(200) def CS_ALL(self, Value): epdconfig.digital_write(self.EPD_CS_M_PIN, Value) epdconfig.digital_write(self.EPD_CS_S_PIN, Value) def SendCommand(self, Command): epdconfig.digital_write(self.EPD_DC_PIN, 0) epdconfig.spi_writebyte(Command) def SendData(self, Data): epdconfig.digital_write(self.EPD_DC_PIN, 1) epdconfig.spi_writebyte(Data) def SendData2(self, buf, Len): epdconfig.digital_write(self.EPD_DC_PIN, 1) epdconfig.spi_writebyte2(buf, Len) def ReadBusyH(self): print("e-Paper busy H") epdconfig.delay_ms(100) while(epdconfig.digital_read(self.EPD_BUSY_PIN) == 0): # 0: idle, 1: busy epdconfig.delay_ms(20) print("e-Paper busy release") def TurnOnDisplay(self): self.CS_ALL(0) self.SendCommand(0x12) self.SendData(0x00) self.CS_ALL(1) self.ReadBusyH() def Init(self): print("EPD init...") epdconfig.module_init() self.Reset() self.ReadBusyH() self.CS_ALL(0) self.SendCommand(0x4D) self.SendData(0x78) self.SendCommand(0x00) self.SendData(0x2F) self.SendData(0x29) self.SendCommand(0x06) self.SendData(0x0d) self.SendData(0x12) self.SendData(0x30) self.SendData(0x20) self.SendData(0x19) self.SendData(0x3D) self.SendData(0x0C) self.SendCommand(0x06) self.SendData(0x0d) self.SendData(0x12) self.SendData(0x30) self.SendData(0x20) self.SendData(0x19) self.SendData(0x3D) self.SendData(0x0C) self.SendCommand(0x50) self.SendData(0x37) self.SendCommand(0x61) self.SendData(int(self.width/256)) self.SendData(self.width%256) self.SendData(int(self.height/256)) self.SendData(self.height%256) self.SendCommand(0x65) self.SendData(0x00) self.SendData(0x00) self.SendData(0x00) self.SendData(0x00) self.SendCommand(0xE0) self.SendData(0x01) self.SendCommand(0xE3) self.SendData(0x08) self.SendCommand(0xE5) self.SendData(0x08) self.SendCommand(0xE9) self.SendData(0x01) self.SendCommand(0x04) self.ReadBusyH() self.CS_ALL(1) def getbuffer(self, image): # Create a pallette with the 4 colors supported by the panel pal_image = Image.new("P", (1,1)) pal_image.putpalette( (0,0,0, 255,255,255, 255,255,0, 255,0,0) + (0,0,0)*252) # Check if we need to rotate the image imwidth, imheight = image.size if(imwidth == self.width*2 and imheight == self.height): image_temp = image elif(imwidth == self.height and imheight == self.width*2): image_temp = image.rotate(90, expand=True) else: logger.warning("Invalid image dimensions: %d x %d, expected %d x %d" % (imwidth, imheight, self.width*2, self.height)) # Convert the soruce image to the 4 colors, dithering if needed image_4color = image_temp.convert("RGB").quantize(palette=pal_image) buf_4color = bytearray(image_4color.tobytes('raw')) # into a single byte to transfer to the panel if (self.width*2) % 4 == 0 : Width = (self.width*2) // 4 else : Width = (self.width*2) // 4 + 1 Height = self.height buf = [0x00] * int(Width * Height) idx = 0 for j in range(0, Height): for i in range(0, Width): buf[i + j * Width] = (buf_4color[idx] << 6) + (buf_4color[idx+1] << 4) + (buf_4color[idx+2] << 2) + buf_4color[idx+3] idx = idx + 4 return buf def Clear(self, color=0x55): epdconfig.digital_write(self.EPD_CS_M_PIN, 0) self.SendCommand(0x10) for i in range(self.height): self.SendData2([color]* int(self.width/2), int(self.width/2)) self.CS_ALL(1) epdconfig.digital_write(self.EPD_CS_S_PIN, 0) self.SendCommand(0x10) for i in range(self.height): self.SendData2([color]* int(self.width/2), int(self.width/2)) self.CS_ALL(1) self.TurnOnDisplay() def display(self, image): Width =int(self.width / 4) Width1 =int(self.width / 2) epdconfig.digital_write(self.EPD_CS_M_PIN, 0) self.SendCommand(0x10) for i in range(self.height): self.SendData2(image[i * Width1 : i * Width1+Width], Width) self.CS_ALL(1) epdconfig.digital_write(self.EPD_CS_S_PIN, 0) self.SendCommand(0x10) for i in range(self.height): self.SendData2(image[i * Width1+Width : i * Width1+Width1], Width) self.CS_ALL(1) self.TurnOnDisplay() def sleep(self): self.CS_ALL(0) self.SendCommand(0x02) # POWER_OFF self.SendData(0X00) epdconfig.delay_ms(100) self.SendCommand(0x07) # DEEP_SLEEP self.SendData(0XA5) self.CS_ALL(1) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###