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Pico-ePaper-1.54-B_V2.py
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216 lines (173 loc) · 6.21 KB
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from machine import Pin, SPI
import framebuf
import utime
EPD_WIDTH = 200
EPD_HEIGHT = 200
RST_PIN = 12
DC_PIN = 8
CS_PIN = 9
BUSY_PIN = 13
SPI_INTERFACE = 1
class EPD_1in54_B_V2:
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(SPI_INTERFACE)
self.spi.init(baudrate=4000000)
self.dc_pin = Pin(DC_PIN, Pin.OUT)
self.buffer_black = bytearray([0XFF] * (self.height * self.width // 8))
self.buffer_red = bytearray([0XFF] * (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):
print("reset")
self.digital_write(self.reset_pin, 1)
self.delay_ms(200)
self.digital_write(self.reset_pin, 0)
self.delay_ms(10)
self.digital_write(self.reset_pin, 1)
self.delay_ms(200)
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(100)
print('busy release')
def init(self):
print('init')
self.reset()
self.delay_ms(500)
self.ReadBusy()
self.delay_ms(500)
self.send_command(0x12)
self.delay_ms(500)
self.ReadBusy() # waiting for the electronic paper IC to release the idle signal
self.delay_ms(500)
self.send_command(0x01) # Driver output control
self.send_data(0xC7)
self.send_data(0x00)
self.send_data(0x01)
self.delay_ms(500)
self.send_command(0x11) # data entry mode
self.send_data(0x01)
self.delay_ms(500)
self.send_command(0x44) # set Ram-X address start/end position
self.send_data(0x00)
self.send_data(0x18) # 0x18-->(24+1)*8=200
self.delay_ms(500)
self.send_command(0x45) # set Ram-Y address start/end position
self.send_data(0xC7) # 0xC7-->(199+1)=200
self.send_data(0x00)
self.send_data(0x00)
self.send_data(0x00)
self.delay_ms(500)
self.send_command(0x3C) # BorderWavefrom
self.send_data(0x05)
self.delay_ms(500)
self.send_command(0x18) # Read built-in temperature sensor
self.send_data(0x80)
self.delay_ms(500)
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(0xC7)
self.send_data(0x00)
self.delay_ms(500)
self.ReadBusy()
self.delay_ms(500)
return 0
def display(self):
if self.width%8 == 0:
linewidth = int(self.width/8)
else:
linewidth = int(self.width/8) + 1
buf = [0x00] * self.height * linewidth
# send black data
if (self.buffer_black != None):
self.send_command(0x24) # DATA_START_TRANSMISSION_1
self.send_data1(self.buffer_black)
# send red data
if (self.buffer_red != None):
self.send_command(0x26) # DATA_START_TRANSMISSION_2
for i in range(0, int(self.width * self.height / 8)):
buf[i] = ~self.buffer_red[i]
self.send_data1(buf)
self.send_command(0x22) # DISPLAY_REFRESH
self.send_data(0xF7)
self.send_command(0x20) # DISPLAY_REFRESH
self.ReadBusy()
def Clear(self):
if self.width % 8 == 0:
linewidth = int(self.width/8)
else:
linewidth = int(self.width/8) + 1
self.send_command(0x24) # DATA_START_TRANSMISSION_1
self.send_data1([0xff] * int(self.height * linewidth))
self.send_command(0x26) # DATA_START_TRANSMISSION_2
self.send_data1([0x00] * int(self.height * linewidth))
self.send_command(0x22) # DISPLAY_REFRESH
self.send_data(0xF7)
self.send_command(0x20) # DISPLAY_REFRESH
self.ReadBusy()
def sleep(self):
self.send_command(0X10)
self.send_data(0x01)
self.delay_ms(2000)
self.module_exit()
if __name__ == '__main__':
epd = EPD_1in54_B_V2()
epd.Clear()
epd.imageblack.fill(0xff)
epd.imagered.fill(0xff)
epd.imageblack.text("Waveshare", 0, 10, 0x00)
epd.imagered.text("ePaper-1.54", 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.imageblack.fill_rect(60, 150, 40, 40, 0x00)
epd.display()
epd.delay_ms(2000)
epd.Clear()
epd.delay_ms(2000)
print("sleep")
epd.sleep()
print("complete")