# ***************************************************************************** # * | File : epd2in9.py # * | Author : Waveshare team # * | Function : Electronic paper driver # * | Info : # *---------------- # * | This version: V4.0 # * | Date : 2019-06-20 # # | 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 = 128 EPD_HEIGHT = 296 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_full_update = [ 0x50, 0xAA, 0x55, 0xAA, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ] lut_partial_update = [ 0x10, 0x18, 0x18, 0x08, 0x18, 0x18, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x13, 0x14, 0x44, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ] # Hardware reset def reset(self): epdconfig.digital_write(self.reset_pin, 1) epdconfig.delay_ms(200) epdconfig.digital_write(self.reset_pin, 0) epdconfig.delay_ms(5) epdconfig.digital_write(self.reset_pin, 1) epdconfig.delay_ms(200) 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 ReadBusy(self): while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy epdconfig.delay_ms(200) def TurnOnDisplay(self): self.send_command(0x22) # DISPLAY_UPDATE_CONTROL_2 self.send_data(0xC4) self.send_command(0x20) # MASTER_ACTIVATION self.send_command(0xFF) # TERMINATE_FRAME_READ_WRITE logger.debug("e-Paper busy") self.ReadBusy() logger.debug("e-Paper busy release") 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) 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 >> 3) & 0xFF) self.send_command(0x4F) # SET_RAM_Y_ADDRESS_COUNTER self.send_data(y & 0xFF) self.send_data((y >> 8) & 0xFF) self.ReadBusy() def init(self, lut): if (epdconfig.module_init() != 0): return -1 # EPD hardware init start self.reset() self.send_command(0x01) # DRIVER_OUTPUT_CONTROL self.send_data((EPD_HEIGHT - 1) & 0xFF) self.send_data(((EPD_HEIGHT - 1) >> 8) & 0xFF) self.send_data(0x00) # GD = 0 SM = 0 TB = 0 self.send_command(0x0C) # BOOSTER_SOFT_START_CONTROL self.send_data(0xD7) self.send_data(0xD6) self.send_data(0x9D) self.send_command(0x2C) # WRITE_VCOM_REGISTER self.send_data(0xA8) # VCOM 7C self.send_command(0x3A) # SET_DUMMY_LINE_PERIOD self.send_data(0x1A) # 4 dummy lines per gate self.send_command(0x3B) # SET_GATE_TIME self.send_data(0x08) # 2us per line self.send_command(0x11) # DATA_ENTRY_MODE_SETTING self.send_data(0x03) # X increment Y increment self.send_command(0x32) # WRITE_LUT_REGISTER for i in range(0, len(lut)): self.send_data(lut[i]) # 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("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)) elif(imwidth == self.height and imheight == self.width): logger.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)) return buf def display(self, image): if (image == None): return self.SetWindow(0, 0, self.width - 1, self.height - 1) for j in range(0, self.height): self.SetCursor(0, j) self.send_command(0x24) # WRITE_RAM for i in range(0, int(self.width / 8)): self.send_data(image[i + j * int(self.width / 8)]) self.TurnOnDisplay() def Clear(self, color): self.SetWindow(0, 0, self.width - 1, self.height - 1) for j in range(0, self.height): self.SetCursor(0, j) self.send_command(0x24) # WRITE_RAM for i in range(0, int(self.width / 8)): self.send_data(color) self.TurnOnDisplay() def sleep(self): self.send_command(0x10) # DEEP_SLEEP_MODE self.send_data(0x01) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###