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basic1/lib/Pico_ePaper_Code/python/Pico-ePaper-3.7.py
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Adolfo Reyna adfbef7228 abstracting display, touch and sd
2026-01-28 20:12:41 -05:00

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# *****************************************************************************
# * | File : Pico_ePaper-3.7.py
# * | Author : Waveshare team
# * | Function : Electronic paper driver
# * | Info :
# *----------------
# * | This version: V1.0
# * | Date : 2021-06-01
# # | 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 = 280
EPD_HEIGHT = 480
RST_PIN = 12
DC_PIN = 8
CS_PIN = 9
BUSY_PIN = 13
EPD_3IN7_lut_4Gray_GC =[
0x2A,0x06,0x15,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#1
0x28,0x06,0x14,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#2
0x20,0x06,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#3
0x14,0x06,0x28,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#4
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#5
0x00,0x02,0x02,0x0A,0x00,0x00,0x00,0x08,0x08,0x02,#6
0x00,0x02,0x02,0x0A,0x00,0x00,0x00,0x00,0x00,0x00,#7
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#8
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#9
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#10
0x22,0x22,0x22,0x22,0x22
]
EPD_3IN7_lut_1Gray_GC =[
0x2A,0x05,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#1
0x05,0x2A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#2
0x2A,0x15,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#3
0x05,0x0A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#4
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#5
0x00,0x02,0x03,0x0A,0x00,0x02,0x06,0x0A,0x05,0x00,#6
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#7
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#8
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#9
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#10
0x22,0x22,0x22,0x22,0x22
]
EPD_3IN7_lut_1Gray_DU =[
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#1
0x01,0x2A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x0A,0x55,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#3
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#5
0x00,0x00,0x05,0x05,0x00,0x05,0x03,0x05,0x05,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#7
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#9
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x22,0x22,0x22,0x22,0x22
]
EPD_3IN7_lut_1Gray_A2 =[
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#1
0x0A,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#2
0x05,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#3
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#4
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#5
0x00,0x00,0x03,0x05,0x00,0x00,0x00,0x00,0x00,0x00,#6
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#7
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#8
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#9
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,#10
0x22,0x22,0x22,0x22,0x22
]
class EPD_3in7:
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.lut_4Gray_GC = EPD_3IN7_lut_4Gray_GC
self.lut_1Gray_GC = EPD_3IN7_lut_1Gray_GC
self.lut_1Gray_DU = EPD_3IN7_lut_1Gray_DU
self.lut_1Gray_A2 = EPD_3IN7_lut_1Gray_A2
self.black = 0x00
self.white = 0xff
self.darkgray = 0xaa
self.grayish = 0x55
self.spi = SPI(1)
self.spi.init(baudrate=4000_000)
self.dc_pin = Pin(DC_PIN, Pin.OUT)
self.buffer_1Gray = bytearray(self.height * self.width // 8)
self.buffer_4Gray = bytearray(self.height * self.width // 4)
self.image1Gray = framebuf.FrameBuffer(self.buffer_1Gray, self.width, self.height, framebuf.MONO_HLSB)
self.image4Gray = framebuf.FrameBuffer(self.buffer_4Gray, self.width, self.height, framebuf.GS2_HMSB)
self.EPD_3IN7_4Gray_init()
self.EPD_3IN7_4Gray_Clear()
utime.sleep_ms(500)
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(30)
self.digital_write(self.reset_pin, 0)
self.delay_ms(3)
self.digital_write(self.reset_pin, 1)
self.delay_ms(30)
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 ReadBusy(self):
print("e-Paper busy")
while(self.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy
self.delay_ms(10)
self.delay_ms(200)
print("e-Paper busy release")
def Load_LUT(self,lut):
self.send_command(0x32)
for count in range(0, 105):
if lut == 0 :
self.send_data(self.lut_4Gray_GC[count])
elif lut == 1 :
self.send_data(self.lut_1Gray_GC[count])
elif lut == 2 :
self.send_data(self.lut_1Gray_DU[count])
elif lut == 3 :
self.send_data(self.lut_1Gray_A2[count])
else:
print("There is no such lut ")
def EPD_3IN7_4Gray_init(self):
self.reset() # SWRESET
self.send_command(0x12)
self.delay_ms(300)
self.send_command(0x46)
self.send_data(0xF7)
self.ReadBusy()
self.send_command(0x47)
self.send_data(0xF7)
self.ReadBusy()
self.send_command(0x01) # setting gaet number
self.send_data(0xDF)
self.send_data(0x01)
self.send_data(0x00)
self.send_command(0x03) # set gate voltage
self.send_data(0x00)
self.send_command(0x04) # set source voltage
self.send_data(0x41)
self.send_data(0xA8)
self.send_data(0x32)
self.send_command(0x11) # set data entry sequence
self.send_data(0x03)
self.send_command(0x3C) # set border
self.send_data(0x03)
self.send_command(0x0C) # set booster strength
self.send_data(0xAE)
self.send_data(0xC7)
self.send_data(0xC3)
self.send_data(0xC0)
self.send_data(0xC0)
self.send_command(0x18) # set internal sensor on
self.send_data(0x80)
self.send_command(0x2C) # set vcom value
self.send_data(0x44)
self.send_command(0x37) # set display option, these setting turn on previous function
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x44) # setting X direction start/end position of RAM
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x17)
self.send_data(0x01)
self.send_command(0x45) # setting Y direction start/end position of RAM
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0xDF)
self.send_data(0x01)
self.send_command(0x22) # Display Update Control 2
self.send_data(0xCF)
def EPD_3IN7_1Gray_init(self):
self.reset()
self.send_command(0x12)
self.delay_ms(300)
self.send_command(0x46)
self.send_data(0xF7)
self.ReadBusy()
self.send_command(0x47)
self.send_data(0xF7)
self.ReadBusy()
self.send_command(0x01) # setting gaet number
self.send_data(0xDF)
self.send_data(0x01)
self.send_data(0x00)
self.send_command(0x03) # set gate voltage
self.send_data(0x00)
self.send_command(0x04) # set source voltage
self.send_data(0x41)
self.send_data(0xA8)
self.send_data(0x32)
self.send_command(0x11) # set data entry sequence
self.send_data(0x03)
self.send_command(0x3C) # set border
self.send_data(0x03)
self.send_command(0x0C) # set booster strength
self.send_data(0xAE)
self.send_data(0xC7)
self.send_data(0xC3)
self.send_data(0xC0)
self.send_data(0xC0)
self.send_command(0x18) # set internal sensor on
self.send_data(0x80)
self.send_command(0x2C) # set vcom value
self.send_data(0x44)
self.send_command(0x37) # set display option, these setting turn on previous function
self.send_data(0x00) # can switch 1 gray or 4 gray
self.send_data(0xFF)
self.send_data(0xFF)
self.send_data(0xFF)
self.send_data(0xFF)
self.send_data(0x4F)
self.send_data(0xFF)
self.send_data(0xFF)
self.send_data(0xFF)
self.send_data(0xFF)
self.send_command(0x44) # setting X direction start/end position of RAM
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x17)
self.send_data(0x01)
self.send_command(0x45) # setting Y direction start/end position of RAM
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0xDF)
self.send_data(0x01)
self.send_command(0x22) # Display Update Control 2
self.send_data(0xCF)
def EPD_3IN7_4Gray_Clear(self):
high = self.height
if( self.width % 8 == 0) :
wide = self.width // 8
else :
wide = self.width // 8 + 1
self.send_command(0x49)
self.send_data(0x00)
self.send_command(0x4E)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x24)
for j in range(0, high):
for i in range(0, wide):
self.send_data(0Xff)
self.send_command(0x4E)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x26)
for j in range(0, high):
for i in range(0, wide):
self.send_data(0Xff)
self.Load_LUT(0)
self.send_command(0x22)
self.send_data(0xC7)
self.send_command(0x20)
self.ReadBusy()
def EPD_3IN7_1Gray_Clear(self):
high = self.height
if( self.width % 8 == 0) :
wide = self.width // 8
else :
wide = self.width // 8 + 1
self.send_command(0x4E)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x24)
for j in range(0, high):
for i in range(0, wide):
self.send_data(0Xff)
self.Load_LUT(1)
self.send_command(0x20)
self.ReadBusy()
def EPD_3IN7_4Gray_Display(self,Image):
self.send_command(0x49)
self.send_data(0x00)
self.send_command(0x4E)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x24)
for i in range(0, 16800):
temp3=0
for j in range(0, 2):
temp1 = Image[i*2+j]
for k in range(0, 2):
temp2 = temp1&0x03
if(temp2 == 0x03):
temp3 |= 0x01 # white
elif(temp2 == 0x00):
temp3 |= 0x00 # black
elif(temp2 == 0x02):
temp3 |= 0x01 # gray1
else: # 0x01
temp3 |= 0x00 # gray2
temp3 <<= 1
temp1 >>= 2
temp2 = temp1&0x03
if(temp2 == 0x03): # white
temp3 |= 0x01;
elif(temp2 == 0x00): # black
temp3 |= 0x00;
elif(temp2 == 0x02):
temp3 |= 0x01 # gray1
else: # 0x01
temp3 |= 0x00 # gray2
if (( j!=1 ) | ( k!=1 )):
temp3 <<= 1
temp1 >>= 2
self.send_data(temp3)
# new data
self.send_command(0x4E)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x26)
for i in range(0, 16800):
temp3=0
for j in range(0, 2):
temp1 = Image[i*2+j]
for k in range(0, 2):
temp2 = temp1&0x03
if(temp2 == 0x03):
temp3 |= 0x01 # white
elif(temp2 == 0x00):
temp3 |= 0x00 # black
elif(temp2 == 0x02):
temp3 |= 0x00 # gray1
else: # 0x01
temp3 |= 0x01 # gray2
temp3 <<= 1
temp1 >>= 2
temp2 = temp1&0x03
if(temp2 == 0x03): # white
temp3 |= 0x01;
elif(temp2 == 0x00): # black
temp3 |= 0x00;
elif(temp2 == 0x02):
temp3 |= 0x00 # gray1
else: # 0x01
temp3 |= 0x01 # gray2
if (( j!=1 ) | ( k!=1 )):
temp3 <<= 1
temp1 >>= 2
self.send_data(temp3)
self.Load_LUT(0)
self.send_command(0x22)
self.send_data(0xC7)
self.send_command(0x20)
self.ReadBusy()
def EPD_3IN7_1Gray_Display(self,Image):
high = self.height
if( self.width % 8 == 0) :
wide = self.width // 8
else :
wide = self.width // 8 + 1
self.send_command(0x49)
self.send_data(0x00)
self.send_command(0x4E)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F)
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x24)
for j in range(0, high):
for i in range(0, wide):
self.send_data(Image[i + j * wide])
self.Load_LUT(1)
self.send_command(0x20)
self.ReadBusy()
def EPD_3IN7_1Gray_Display_Part(self,Image):
high = self.height
if( self.width % 8 == 0) :
wide = self.width // 8
else :
wide = self.width // 8 + 1
self.send_command(0x44)
self.send_data(0x00)
self.send_data(0x00)
self.send_data((self.width-1) & 0xff)
self.send_data(((self.width-1)>>8) & 0x03)
self.send_command(0x45)
self.send_data(0x00)
self.send_data(0x00)
self.send_data((self.height-1) & 0xff)
self.send_data(((self.height-1)>>8) & 0x03)
self.send_command(0x4E) # SET_RAM_X_ADDRESS_COUNTER
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x4F) # SET_RAM_Y_ADDRESS_COUNTER
self.send_data(0x00)
self.send_data(0x00)
self.send_command(0x24)
for j in range(0, high):
for i in range(0, wide):
self.send_data(Image[i + j * wide])
self.Load_LUT(2)
self.send_command(0x20)
self.ReadBusy()
def Sleep(self):
self.send_command(0X10) # deep sleep
self.send_data(0x03)
if __name__=='__main__':
epd = EPD_3in7()
epd.image1Gray.fill(0xff)
epd.image4Gray.fill(0xff)
epd.image4Gray.text("Waveshare", 5, 10, epd.black)
epd.image4Gray.text("Pico_ePaper-3.7", 5, 40, epd.black)
epd.image4Gray.text("Raspberry Pico", 5, 70, epd.black)
epd.EPD_3IN7_4Gray_Display(epd.buffer_4Gray)
epd.delay_ms(500)
epd.image4Gray.vline(10, 90, 60, epd.black)
epd.image4Gray.vline(90, 90, 60, epd.black)
epd.image4Gray.hline(10, 90, 80, epd.black)
epd.image4Gray.hline(10, 150, 80, epd.black)
epd.image4Gray.line(10, 90, 90, 150, epd.black)
epd.image4Gray.line(90, 90, 10, 150, epd.black)
epd.EPD_3IN7_4Gray_Display(epd.buffer_4Gray)
epd.delay_ms(500)
epd.image4Gray.rect(10, 180, 50, 80, epd.black)
epd.image4Gray.fill_rect(70, 180, 50, 80, epd.black)
epd.EPD_3IN7_4Gray_Display(epd.buffer_4Gray)
epd.delay_ms(500)
epd.image4Gray.fill_rect(0, 270, 280, 30, epd.black)
epd.image4Gray.text('GRAY1 with black background',5, 281, epd.white)
epd.image4Gray.text('GRAY2 with white background',5, 311, epd.grayish)
epd.image4Gray.text('GRAY3 with white background',5, 341, epd.darkgray)
epd.image4Gray.text('GRAY4 with white background',5, 371, epd.black)
epd.EPD_3IN7_4Gray_Display(epd.buffer_4Gray)
epd.delay_ms(500)
epd.EPD_3IN7_1Gray_init()
for i in range(0, 10):
epd.image1Gray.fill_rect(0, 430, 280, 10, epd.white)
epd.image1Gray.text(str(i), 136, 431, epd.black)
epd.EPD_3IN7_1Gray_Display_Part(epd.buffer_1Gray)
epd.Sleep()
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