# ***************************************************************************** # * | File : epd2in13.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 import numpy as np # 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_full_update = [ 0x22, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 ] lut_partial_update = [ 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 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(100) 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 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(0X3C) # BORDER_WAVEFORM_CONTROL self.send_data(0x03) self.send_command(0X11) # DATA_ENTRY_MODE_SETTING self.send_data(0x03) # X increment; Y increment # WRITE_LUT_REGISTER self.send_command(0x32) for count in range(30): self.send_data(lut[count]) return 0 ## # @brief: specify the memory area for data R/W ## def SetWindows(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 >> 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) ## # @brief: specify the start point for data R/W ## 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 getbuffer(self, image): if self.width%8 == 0: linewidth = int(self.width/8) else: linewidth = int(self.width/8) + 1 buf = [0xFF] * (linewidth * self.height) image_monocolor = image.convert('1') imwidth, imheight = image_monocolor.size pixels = image_monocolor.load() if(imwidth == self.width and imheight == self.height): logger.debug("Vertical") for y in range(imheight): for x in range(imwidth): if pixels[x, y] == 0: # x = imwidth - x buf[int(x / 8) + y * linewidth] &= ~(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: # newy = imwidth - newy - 1 buf[int(newx / 8) + newy*linewidth] &= ~(0x80 >> (y % 8)) return buf def display(self, image): if self.width%8 == 0: linewidth = int(self.width/8) else: linewidth = int(self.width/8) + 1 self.SetWindows(0, 0, self.width, self.height); for j in range(0, self.height): self.SetCursor(0, j); self.send_command(0x24); for i in range(0, linewidth): self.send_data(image[i + j * linewidth]) self.TurnOnDisplay() def Clear(self, color): if self.width%8 == 0: linewidth = int(self.width/8) else: linewidth = int(self.width/8) + 1 self.SetWindows(0, 0, self.width, self.height); for j in range(0, self.height): self.SetCursor(0, j); self.send_command(0x24); for i in range(0, linewidth): self.send_data(color) self.TurnOnDisplay() def sleep(self): self.send_command(0x10) #enter deep sleep self.send_data(0x01) epdconfig.delay_ms(100) epdconfig.delay_ms(2000) epdconfig.module_exit() ### END OF FILE ###