e-Paper

RaspberryPi_JetsonNano/python/examples/epd_2in13g_test.py

@@ -0,0 +1,68 @@
+#!/usr/bin/python
+# -*- coding:utf-8 -*-
+import sys
+import os
+picdir = os.path.join(os.path.dirname(os.path.dirname(os.path.realpath(__file__))), 'pic')
+libdir = os.path.join(os.path.dirname(os.path.dirname(os.path.realpath(__file__))), 'lib')
+if os.path.exists(libdir):
+    sys.path.append(libdir)
+
+import logging
+from waveshare_epd import epd2in13g
+import time
+from PIL import Image,ImageDraw,ImageFont
+import traceback
+
+logging.basicConfig(level=logging.DEBUG)
+
+try:
+    logging.info("epd2in13g Demo")
+
+    epd = epd2in13g.EPD()   
+    logging.info("init and Clear")
+    epd.init()
+    epd.Clear()
+    font15 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 15)
+    font18 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 18)
+    font24 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 24)
+    font40 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 40)
+
+    # Drawing on the image
+    logging.info("1.Drawing on the image...")
+    Himage = Image.new('RGB', (epd.height, epd.width), epd.WHITE)  
+    draw = ImageDraw.Draw(Himage)
+    draw.rectangle([(0,0),(50,50)],outline = epd.BLACK)
+    draw.rectangle([(55,0),(100,50)],fill = epd.RED)
+    draw.line([(0,0),(50,50)], fill = epd.YELLOW,width = 1)
+    draw.line([(0,50),(50,0)], fill = epd.YELLOW,width = 1)
+    draw.pieslice((55, 60, 95, 100), 90, 180, outline = epd.RED)
+    draw.pieslice((55, 60, 95, 100), 270, 360, fill = epd.BLACK)
+    draw.chord((10, 60, 50, 100), 0, 360, fill = epd.YELLOW)
+    draw.ellipse((55, 60, 95, 100), outline = epd.RED)
+    draw.polygon([(110,0),(110,50),(150,25)],outline = epd.BLACK)
+    draw.polygon([(190,0),(190,50),(150,25)],fill = epd.BLACK)
+    draw.text((120, 60), 'e-Paper demo', font = font15, fill = epd.YELLOW)
+    draw.text((110, 90), u'微雪电子', font = font24, fill = epd.RED)
+
+    epd.display(epd.getbuffer(Himage))
+    time.sleep(3)
+    
+    # read bmp file 
+    logging.info("2.read bmp file")
+    Himage = Image.open(os.path.join(picdir, '2in13g.bmp'))
+    epd.display(epd.getbuffer(Himage))
+    time.sleep(3)
+    
+    logging.info("Clear...")
+    epd.Clear()
+    
+    logging.info("Goto Sleep...")
+    epd.sleep()
+        
+except IOError as e:
+    logging.info(e)
+    
+except KeyboardInterrupt:    
+    logging.info("ctrl + c:")
+    epd2in13g.epdconfig.module_exit()
+    exit()

RaspberryPi_JetsonNano/python/lib/waveshare_epd/epd2in13g.py

@@ -0,0 +1,242 @@
+# *****************************************************************************
+# * | File        :	  epd2in13g.py
+# * | Author      :   Waveshare team
+# * | Function    :   Electronic paper driver
+# * | Info        :
+# *----------------
+# * | This version:   V1.0
+# * | Date        :   2023-05-29
+# # | 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       = 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
+        self.BLACK  = 0x000000   #   00  BGR
+        self.WHITE  = 0xffffff   #   01
+        self.YELLOW = 0x00ffff   #   10
+        self.RED    = 0x0000ff   #   11
+        self.Gate_BITS = EPD_HEIGHT
+        if self.width < 128:
+            self.Source_BITS = 128
+        else:
+            self.Source_BITS = self.width
+
+        
+    # Hardware reset
+    def reset(self):
+        epdconfig.digital_write(self.reset_pin, 1)
+        epdconfig.delay_ms(200) 
+        epdconfig.digital_write(self.reset_pin, 0)         # module reset
+        epdconfig.delay_ms(2)
+        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):
+        logger.debug("e-Paper busy H")
+        epdconfig.delay_ms(100)
+        while(epdconfig.digital_read(self.busy_pin) == 0):      # 0: idle, 1: busy
+            epdconfig.delay_ms(5)
+        logger.debug("e-Paper busy release")
+        
+    def SetWindow(self):
+        self.send_command(0x61) # 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(self.Source_BITS/256)
+        self.send_data(self.Source_BITS%256)
+        self.send_data(self.Gate_BITS/256)
+        self.send_data(self.Gate_BITS%256)
+
+    def TurnOnDisplay(self):
+        self.send_command(0x12) # DISPLAY_REFRESH
+        self.send_data(0X00)
+        self.ReadBusy()
+        
+    def init(self):
+        if (epdconfig.module_init() != 0):
+            return -1
+        # EPD hardware init start
+
+        self.reset()
+        
+        self.ReadBusy()
+        self.send_command(0x4D)
+        self.send_data(0x78)
+
+        self.send_command(0x00)
+        self.send_data(0x0F)
+        self.send_data(0x29)
+
+        self.send_command(0x01)
+        self.send_data(0x07)
+        self.send_data(0x00)
+
+        self.send_command(0x03)
+        self.send_data(0x10)
+        self.send_data(0x54)
+        self.send_data(0x44)
+
+        self.send_command(0x06)
+        self.send_data(0x05)
+        self.send_data(0x00)
+        self.send_data(0x3F)
+        self.send_data(0x0A)
+        self.send_data(0x25)
+        self.send_data(0x12)
+        self.send_data(0x1A)
+
+        self.send_command(0x50)
+        self.send_data(0x37)
+
+        self.send_command(0x60)
+        self.send_data(0x02)
+        self.send_data(0x02)
+        
+        self.SetWindow()
+        
+        self.send_command(0xE7)
+        self.send_data(0x1C)
+
+        self.send_command(0xE3)
+        self.send_data(0x22)
+
+        self.send_command(0xB4)
+        self.send_data(0xD0)
+        self.send_command(0xB5)
+        self.send_data(0x03)
+
+        self.send_command(0xE9)
+        self.send_data(0x01)
+        
+        self.send_command(0x30)
+        self.send_data(0x08)
+        
+        self.send_command(0x04)
+        self.ReadBusy()
+        return 0
+
+    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 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 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 % 4 == 0 :
+            Width = self.width // 4
+        else :
+            Width = self.width // 4 + 1
+        Height = self.height 
+        buf = [0x00] * int(Width * Height)
+        idx = 0
+        for j in range(0, Height):
+            for i in range(0, Width):
+                if i == Width -1:
+                    buf[i + j * Width] = (buf_4color[idx] << 6) + (buf_4color[idx+1] << 4)
+                    idx = idx + 2
+                else:
+                    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 display(self, image):
+        if self.width % 4 == 0 :
+            Width = self.width // 4
+        else :
+            Width = self.width // 4 + 1
+        Height = self.height
+
+        self.send_command(0x10)
+        for j in range(0, Height):
+            for i in range(0, self.Source_BITS//4):
+                if i < 31 :
+                    self.send_data(image[i + j * Width])
+                else :
+                    self.send_data(0x00)
+                    
+        self.TurnOnDisplay()
+        
+    def Clear(self, color=0x55):
+        Width = self.Source_BITS//4
+        Height = self.height
+
+
+        self.send_command(0x10)
+        for j in range(0, Height):
+            for i in range(0, Width):
+                    self.send_data(color)
+        self.TurnOnDisplay()
+
+    def sleep(self):
+        self.send_command(0x02) # POWER_OFF
+        self.ReadBusy()
+        epdconfig.delay_ms(100)
+        
+        self.send_command(0x07) # DEEP_SLEEP
+        self.send_data(0XA5)
+        
+        epdconfig.delay_ms(2000)
+        epdconfig.module_exit()
+### END OF FILE ###
+