# ***************************************************************************** # * | File : Pico_ePaper-2.9-C.py # * | Author : Waveshare team # * | Function : Electronic paper driver # * | Info : # *---------------- # * | This version: V1.0 # * | Date : 2021-03-16 # # | 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. # from machine import Pin, SPI import framebuf import utime # Display resolution EPD_WIDTH = 128 EPD_HEIGHT = 296 RST_PIN = 12 DC_PIN = 8 CS_PIN = 9 BUSY_PIN = 13 class EPD_2in9_C: def __init__(self): self.reset_pin = Pin(RST_PIN, Pin.OUT) self.busy_pin = Pin(BUSY_PIN, Pin.IN, Pin.PULL_UP) self.cs_pin = Pin(CS_PIN, Pin.OUT) self.width = EPD_WIDTH self.height = EPD_HEIGHT self.spi = SPI(1) self.spi.init(baudrate=4000_000) self.dc_pin = Pin(DC_PIN, Pin.OUT) self.buffer_black = bytearray(self.height * self.width // 8) self.buffer_red = bytearray(self.height * self.width // 8) self.imageblack = framebuf.FrameBuffer(self.buffer_black, self.width, self.height, framebuf.MONO_HLSB) self.imagered = framebuf.FrameBuffer(self.buffer_red, self.width, self.height, framebuf.MONO_HLSB) self.init() def digital_write(self, pin, value): pin.value(value) def digital_read(self, pin): return pin.value() def delay_ms(self, delaytime): utime.sleep(delaytime / 1000.0) def spi_writebyte(self, data): self.spi.write(bytearray(data)) def module_exit(self): self.digital_write(self.reset_pin, 0) # Hardware reset def reset(self): self.digital_write(self.reset_pin, 1) self.delay_ms(50) self.digital_write(self.reset_pin, 0) self.delay_ms(2) self.digital_write(self.reset_pin, 1) self.delay_ms(50) def send_command(self, command): self.digital_write(self.dc_pin, 0) self.digital_write(self.cs_pin, 0) self.spi_writebyte([command]) self.digital_write(self.cs_pin, 1) def send_data(self, data): self.digital_write(self.dc_pin, 1) self.digital_write(self.cs_pin, 0) self.spi_writebyte([data]) self.digital_write(self.cs_pin, 1) def send_data1(self, buf): self.digital_write(self.dc_pin, 1) self.digital_write(self.cs_pin, 0) self.spi.write(bytearray(buf)) self.digital_write(self.cs_pin, 1) def ReadBusy(self): print('busy') self.send_command(0x71) while(self.digital_read(self.busy_pin) == 0): self.send_command(0x71) self.delay_ms(10) print('busy release') def TurnOnDisplay(self): self.send_command(0x12) self.ReadBusy() def init(self): print('init') self.reset() self.send_command(0x06) # boost self.send_data (0x17) self.send_data (0x17) self.send_data (0x17) self.send_command(0x04) # POWER_ON self.ReadBusy() self.send_command(0X00) # PANEL_SETTING self.send_data(0x8F) self.send_command(0X50) # VCOM_AND_DATA_INTERVAL_SETTING self.send_data(0x77) self.send_command(0x61) # TCON_RESOLUTION self.send_data (0x80) self.send_data (0x01) self.send_data (0x28) return 0 def display(self): self.send_command(0x10) self.send_data1(self.buffer_black) self.send_command(0x13) self.send_data1(self.buffer_red) self.TurnOnDisplay() def Clear(self, colorblack, colorred): self.send_command(0x10) self.send_data1([colorred] * self.height * int(self.width / 8)) self.send_command(0x13) self.send_data1([colorred] * self.height * int(self.width / 8)) self.TurnOnDisplay() def sleep(self): self.send_command(0X02) # power off self.ReadBusy() self.send_command(0X07) # deep sleep self.send_data(0xA5) self.delay_ms(2000) self.module_exit() if __name__=='__main__': epd = EPD_2in9_C() epd.Clear(0xff, 0xff) epd.imageblack.fill(0xff) epd.imagered.fill(0xff) epd.imageblack.text("Waveshare", 0, 10, 0x00) epd.imagered.text("ePaper-2.9-C", 0, 25, 0x00) epd.imageblack.text("RPi Pico", 0, 40, 0x00) epd.imagered.text("Hello World", 0, 55, 0x00) epd.display() epd.delay_ms(2000) epd.imagered.vline(10, 90, 40, 0x00) epd.imagered.vline(90, 90, 40, 0x00) epd.imageblack.hline(10, 90, 80, 0x00) epd.imageblack.hline(10, 130, 80, 0x00) epd.imagered.line(10, 90, 90, 130, 0x00) epd.imageblack.line(90, 90, 10, 130, 0x00) epd.display() epd.delay_ms(2000) epd.imageblack.rect(10, 150, 40, 40, 0x00) epd.imagered.fill_rect(60, 150, 40, 40, 0x00) epd.display() epd.delay_ms(2000) epd.Clear(0xff, 0xff) epd.delay_ms(2000) print("sleep") epd.sleep()