abstracting display, touch and sd
This commit is contained in:
Adolfo Reyna
310
lib/Pico_ePaper_Code/python/Pico-ePaper-4.2-B_old.py
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310
lib/Pico_ePaper_Code/python/Pico-ePaper-4.2-B_old.py
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# *****************************************************************************
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# * | File : Pico_ePaper-3.7.py
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# * | Author : Waveshare team
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# * | Function : Electronic paper driver
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# * | Info :
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# *----------------
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# * | This version: V1.0
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# * | Date : 2021-06-01
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# # | Info : python demo
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# -----------------------------------------------------------------------------
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documnetation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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from machine import Pin, SPI
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import framebuf
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import utime
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# Display resolution
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EPD_WIDTH = 400
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EPD_HEIGHT = 300
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SCK_PIN = 10
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DIN_PIN = 11
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RST_PIN = 12
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DC_PIN = 8
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CS_PIN = 9
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BUSY_PIN = 13
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class EPD_4in2_B:
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def __init__(self):
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self.reset_pin = Pin(RST_PIN, Pin.OUT)
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self.busy_pin = Pin(BUSY_PIN, Pin.IN, Pin.PULL_UP)
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self.cs_pin = Pin(CS_PIN, Pin.OUT)
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self.sck_pin = 1
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self.din_pin = 1
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self.width = EPD_WIDTH
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self.height = EPD_HEIGHT
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self.flag = 0
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self.spi = SPI(1,baudrate=4000_000,sck=Pin(SCK_PIN),mosi=Pin(DIN_PIN))
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# self.spi.init(baudrate=4000_000)
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self.dc_pin = Pin(DC_PIN, Pin.OUT)
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self.buffer_black = bytearray(self.height * self.width // 8)
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self.buffer_red = bytearray(self.height * self.width // 8)
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self.imageblack = framebuf.FrameBuffer(self.buffer_black, self.width, self.height, framebuf.MONO_HLSB)
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self.imagered = framebuf.FrameBuffer(self.buffer_red, self.width, self.height, framebuf.MONO_HLSB)
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self.EPD_4IN2B_Init()
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self.EPD_4IN2B_Clear()
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utime.sleep_ms(500)
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def digital_write(self, pin, value):
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pin.value(value)
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def digital_read(self, pin):
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return pin.value()
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def delay_ms(self, delaytime):
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utime.sleep(delaytime / 1000.0)
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def spi_writebyte(self, data):
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self.spi.write(bytearray(data))
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def module_exit(self):
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self.digital_write(self.reset_pin, 0)
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def gpio_init(self):
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self.spi.deinit()
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def spi_init(self):
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self.spi = SPI(1,baudrate=4000_000,sck=Pin(SCK_PIN),mosi=Pin(DIN_PIN))
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self.dc_pin = Pin(DC_PIN, Pin.OUT)
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# Hardware reset
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def reset(self):
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self.digital_write(self.reset_pin, 1)
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self.delay_ms(200)
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self.digital_write(self.reset_pin, 0)
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self.delay_ms(2)
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self.digital_write(self.reset_pin, 1)
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self.delay_ms(200)
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def send_command(self, command):
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self.digital_write(self.dc_pin, 0)
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self.digital_write(self.cs_pin, 0)
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self.spi_writebyte([command])
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self.digital_write(self.cs_pin, 1)
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def send_data(self, data):
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self.digital_write(self.dc_pin, 1)
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self.digital_write(self.cs_pin, 0)
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self.spi_writebyte([data])
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self.digital_write(self.cs_pin, 1)
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def send_data1(self, buf):
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self.digital_write(self.dc_pin, 1)
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self.digital_write(self.cs_pin, 0)
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self.spi.write(bytearray(buf))
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self.digital_write(self.cs_pin, 1)
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def send_read(self):
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j = 0x00
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self.sck_pin = Pin(SCK_PIN, Pin.OUT)
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self.din_pin = Pin(DIN_PIN, Pin.IN, Pin.PULL_UP)
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self.digital_write(self.dc_pin, 1)
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self.digital_write(self.cs_pin, 0)
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for i in range(0, 8):
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self.digital_write(self.sck_pin, 0)
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j = j << 1
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if(self.digital_read(self.din_pin) == 1):
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j = j | 0x01
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else:
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j = j & 0xfe
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self.digital_write(self.sck_pin, 1)
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self.digital_write(self.cs_pin, 1)
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return j
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def ReadBusy(self):
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print("e-Paper busy")
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if(self.flag == 1):
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while(self.digital_read(self.busy_pin) == 1):
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self.delay_ms(100)
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else:
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while(self.digital_read(self.busy_pin) == 0):
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self.delay_ms(100)
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print("e-Paper busy release")
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def TurnOnDisplay(self):
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if(self.flag == 1):
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self.send_command(0x22)
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self.send_data(0xF7)
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self.send_command(0x20)
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self.ReadBusy()
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else:
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self.send_command(0x12)
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self.delay_ms(100)
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self.ReadBusy()
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def EPD_4IN2B_Init(self):
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i = 0x00
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self.reset()
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self.send_command(0x2F)
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self.delay_ms(100)
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self.gpio_init()
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i = self.send_read()
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print(i)
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self.spi_init()
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if(i == 0x01):
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self.flag = 1
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self.ReadBusy()
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self.send_command(0x12)
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self.ReadBusy()
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self.send_command(0x3C)
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self.send_data(0x05)
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self.send_command(0x18)
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self.send_data(0x80)
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self.send_command(0x11)
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self.send_data(0x03)
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self.send_command(0x44)
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self.send_data(0x00)
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self.send_data(self.width//8-1)
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self.send_command(0x45)
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self.send_data(0x00)
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self.send_data(0x00)
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self.send_data((self.height-1)%256)
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self.send_data((self.height-1)//256)
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self.send_command(0x4E)
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self.send_data(0x00)
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self.send_command(0x4F)
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self.send_data(0x00)
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self.send_data(0x00)
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self.ReadBusy()
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else:
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self.flag = 0
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self.send_command(0x04) # POWER_ON
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self.ReadBusy()
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self.send_command(0x00) # panel setting
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self.send_data(0x0f)
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def EPD_4IN2B_Clear(self):
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high = self.height
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if( self.width % 8 == 0) :
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wide = self.width // 8
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else :
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wide = self.width // 8 + 1
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if(self.flag == 1):
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self.send_command(0x24)
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self.send_data1([0xff] * high * wide)
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self.send_command(0x26)
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self.send_data1([0x00] * high * wide)
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else:
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self.send_command(0x10)
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self.send_data1([0xff] * high * wide)
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self.send_command(0x13)
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self.send_data1([0xff] * high * wide)
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self.TurnOnDisplay()
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def EPD_4IN2B_Display(self,blackImage,redImage):
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high = self.height
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if( self.width % 8 == 0) :
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wide = self.width // 8
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else :
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wide = self.width // 8 + 1
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if(self.flag == 1):
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self.send_command(0x24)
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self.send_data1(blackImage)
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self.send_command(0x26)
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for j in range(0, high):
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for i in range(0, wide):
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self.send_data(~redImage[i + j * wide])
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else:
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self.send_command(0x10)
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self.send_data1(blackImage)
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self.send_command(0x13)
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self.send_data1(redImage)
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self.TurnOnDisplay()
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def Sleep(self):
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if(self.flag == 1):
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self.send_command(0X10)
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self.send_data(0x03)
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else:
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self.send_command(0X50)
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self.send_data(0xf7)
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self.send_command(0X02)
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self.ReadBusy()
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self.send_command(0X07)
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self.send_data(0xA5)
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if __name__=='__main__':
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epd = EPD_4in2_B()
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epd.imageblack.fill(0xff)
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epd.imagered.fill(0xff)
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epd.imageblack.text("Waveshare", 5, 10, 0x00)
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epd.imagered.text("Pico_ePaper-4.2-B", 5, 40, 0x00)
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epd.imageblack.text("Raspberry Pico", 5, 70, 0x00)
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epd.EPD_4IN2B_Display(epd.buffer_black,epd.buffer_red)
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epd.delay_ms(5000)
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epd.imageblack.vline(10, 90, 60, 0x00)
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epd.imagered.vline(90, 90, 60, 0x00)
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epd.imageblack.hline(10, 90, 80, 0x00)
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epd.imagered.hline(10, 150, 80, 0x00)
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epd.imageblack.line(10, 90, 90, 150, 0x00)
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epd.imagered.line(90, 90, 10, 150, 0x00)
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epd.EPD_4IN2B_Display(epd.buffer_black,epd.buffer_red)
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epd.delay_ms(5000)
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epd.imageblack.rect(10, 180, 50, 80, 0x00)
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epd.imagered.fill_rect(70, 180, 50, 80, 0x00)
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epd.EPD_4IN2B_Display(epd.buffer_black,epd.buffer_red)
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epd.delay_ms(5000)
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epd.EPD_4IN2B_Clear()
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epd.Sleep()
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