from machine import Pin, SPI
import framebuf
import utime
# Display resolution
EPD_WIDTH = 128
EPD_HEIGHT = 296
SCK_PIN = 10
DIN_PIN = 11
RST_PIN = 12
DC_PIN = 8
CS_PIN = 9
BUSY_PIN = 13
class EPD_2in9_B_V4_Portrait:
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)
if EPD_WIDTH % 8 == 0:
self.width = EPD_WIDTH
else :
self.width = (EPD_WIDTH // 8) * 8 + 8
self.height = EPD_HEIGHT
self.spi = SPI(1,baudrate=4000_000,sck=Pin(SCK_PIN),mosi=Pin(DIN_PIN))
self.dc_pin = Pin(DC_PIN, Pin.OUT)
self.buffer_balck = bytearray(self.height * self.width // 8)
self.buffer_red = bytearray(self.height * self.width // 8)
self.imageblack = framebuf.FrameBuffer(self.buffer_balck, 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')
while(self.digital_read(self.busy_pin) == 1):
self.delay_ms(10)
print('busy release')
self.delay_ms(20)
def TurnOnDisplay(self):
self.send_command(0x22) #Display Update Control
self.send_data(0xF7)
self.send_command(0x20) #Activate Display Update Sequence
self.ReadBusy()
def TurnOnDisplay_Base(self):
self.send_command(0x22) #Display Update Control
self.send_data(0xF4)
self.send_command(0x20) #Activate Display Update Sequence
self.ReadBusy()
def TurnOnDisplay_Fast(self):
self.send_command(0x22) #Display Update Control
self.send_data(0xC7)
self.send_command(0x20) #Activate Display Update Sequence
self.ReadBusy()
def TurnOnDisplay_Partial(self):
self.send_command(0x22) #Display Update Control
self.send_data(0x1C)
self.send_command(0x20) #Activate Display Update Sequence
self.ReadBusy()
def init(self):
# EPD hardware init start
self.reset()
self.ReadBusy()
self.send_command(0x12) #SWRESET
self.ReadBusy()
self.send_command(0x01) #Driver output control
self.send_data((self.height-1)%256)
self.send_data((self.height-1)//256)
self.send_data(0x00)
self.send_command(0x11) #data entry mode
self.send_data(0x03)
self.send_command(0x44) #set Ram-X address start/end position
self.send_data(0x00)
self.send_data(self.width//8-1)
self.send_command(0x45) #set Ram-Y address start/end position
self.send_data(0x00)
self.send_data(0x00)
self.send_data((self.height-1)%256)
self.send_data((self.height-1)//256)
self.send_command(0x3C) #BorderWavefrom
self.send_data(0x05)
self.send_command(0x21) # Display update control
self.send_data(0x00)
self.send_data(0x80)
self.send_command(0x18) #Read built-in temperature sensor
self.send_data(0x80)
self.send_command(0x4E) # set RAM x address count to 0
self.send_data(0x00)
self.send_command(0x4F) # set RAM y address count to 0X199
self.send_data(0x00)
self.send_data(0x00)
self.ReadBusy()
return 0
def init_Fast(self):
# EPD hardware init start
self.reset()
self.ReadBusy()
self.send_command(0x12) #SWRESET
self.ReadBusy()
self.send_command(0x18) #Read built-in temperature sensor
self.send_data(0x80)
self.send_command(0x22) # Load temperature value
self.send_data(0xB1)
self.send_command(0x20)
self.ReadBusy()
self.send_command(0x1A) # Write to temperature register
self.send_data(0x5a) # 90
self.send_data(0x00)
self.send_command(0x22) # Load temperature value
self.send_data(0x91)
self.send_command(0x20)
self.ReadBusy()
self.send_command(0x01) #Driver output control
self.send_data((self.height-1)%256)
self.send_data((self.height-1)//256)
self.send_data(0x00)
self.send_command(0x11) #data entry mode
self.send_data(0x03)
self.send_command(0x44) #set Ram-X address start/end position
self.send_data(0x00)
self.send_data(self.width//8-1)
self.send_command(0x45) #set Ram-Y address start/end position
self.send_data(0x00)
self.send_data(0x00)
self.send_data((self.height-1)%256)
self.send_data((self.height-1)//256)
self.send_command(0x4E) # set RAM x address count to 0
self.send_data(0x00)
self.send_command(0x4F) # set RAM y address count to 0X199
self.send_data(0x00)
self.send_data(0x00)
self.ReadBusy()
return 0
def display(self): # ryimage: red or yellow image
self.send_command(0x24)
self.send_data1(self.buffer_balck)
self.send_command(0x26)
self.send_data1(self.buffer_red)
self.TurnOnDisplay()
def display_Fast(self): # ryimage: red or yellow image
self.send_command(0x24)
self.send_data1(self.buffer_balck)
self.send_command(0x26)
self.send_data1(self.buffer_red)
self.TurnOnDisplay_Fast()
def Clear(self):
self.send_command(0x24)
self.send_data1([0xFF] * self.height * int(self.width / 8))
self.send_command(0x26)
self.send_data1([0x00] * self.height * int(self.width / 8))
self.TurnOnDisplay()
def display_Partial(self, Image, Xstart, Ystart, Xend, Yend):
if((Xstart % 8 + Xend % 8 == 8 & Xstart % 8 > Xend % 8) | Xstart % 8 + Xend % 8 == 0 | (Xend - Xstart)%8 == 0):
Xstart = Xstart // 8
Xend = Xend // 8
else:
Xstart = Xstart // 8
if Xend % 8 == 0:
Xend = Xend // 8
else:
Xend = Xend // 8 + 1
if(self.width % 8 == 0):
Width = self.width // 8
else:
Width = self.width // 8 +1
Height = self.height
Xend -= 1
Yend -= 1
self.send_command(0x44) # set RAM x address start/end, in page 35
self.send_data(Xstart & 0xff) # RAM x address start at 00h
self.send_data(Xend & 0xff) # RAM x address end at 0fh(15+1)*8->128
self.send_command(0x45) # set RAM y address start/end, in page 35
self.send_data(Ystart & 0xff) # RAM y address start at 0127h
self.send_data((Ystart>>8) & 0x01) # RAM y address start at 0127h
self.send_data(Yend & 0xff) # RAM y address end at 00h
self.send_data((Yend>>8) & 0x01)
self.send_command(0x4E) # set RAM x address count to 0
self.send_data(Xstart & 0xff)
self.send_command(0x4F) # set RAM y address count to 0X127
self.send_data(Ystart & 0xff)
self.send_data((Ystart>>8) & 0x01)
self.send_command(0x24) #Write Black and White image to RAM
for j in range(Height):
for i in range(Width):
if((j > Ystart-1) & (j < (Yend + 1)) & (i > Xstart-1) & (i < (Xend + 1))):
self.send_data(Image[i + j * Width])
self.TurnOnDisplay_Partial()
def sleep(self):
self.send_command(0x10)
self.send_data(0x01)
self.delay_ms(2000)
self.module_exit()
if __name__=='__main__':
epd = EPD_2in9_B_V4_Portrait()
epd.Clear()
# epd.imageblack.fill(0xff)
# epd.imagered.fill(0x00)
# epd.imageblack.text("Waveshare", 0, 10, 0x00)
# epd.imagered.text("ePaper-2.9-B-V4", 0, 25, 0xff)
# epd.imageblack.text("RPi Pico", 0, 40, 0x00)
# epd.imagered.text("Hello World", 0, 55, 0xff)
# epd.display()
# epd.delay_ms(2000)
# epd.imagered.vline(10, 90, 40, 0xff)
# epd.imagered.vline(90, 90, 40, 0xff)
# epd.imageblack.hline(10, 90, 80, 0x00)
# epd.imageblack.hline(10, 130, 80, 0x00)
# epd.imagered.line(10, 90, 90, 130, 0xff)
# epd.imageblack.line(90, 90, 10, 130, 0x00)
# epd.display()
# epd.delay_ms(2000)
# epd.init_Fast
# epd.imageblack.rect(10, 150, 40, 40, 0x00)
# epd.imagered.fill_rect(60, 150, 40, 40, 0xff)
# epd.display_Fast()
# epd.delay_ms(2000)
# epd.init()
# epd.Clear()
# epd.delay_ms(2000)
epd.imageblack.fill(0xff)
epd.imagered.fill(0x00)
epd.imageblack.text("Waveshare", 0, 10, 0x00)
epd.imagered.text("ePaper-2.9-B-V4", 0, 25, 0xff)
epd.imageblack.text("RPi Pico", 0, 40, 0x00)
epd.imagered.text("Hello World", 0, 55, 0xff)
epd.display()
print("sleep")Loading
epaper-2in9
epaper-2in9