235 lines
9 KiB
Python
235 lines
9 KiB
Python
# /*****************************************************************************
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# * | File : EPD_1in54.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: V3.0
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# * | Date : 2018-11-01
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# * | Info : python2 demo
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# * 1.Remove:
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# digital_write(self, pin, value)
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# digital_read(self, pin)
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# delay_ms(self, delaytime)
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# set_lut(self, lut)
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# self.lut = self.lut_full_update
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# * 2.Change:
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# display_frame -> TurnOnDisplay
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# set_memory_area -> SetWindow
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# set_memory_pointer -> SetCursor
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# * 3.How to use
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# epd = epd1in54.EPD()
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# epd.init(epd.lut_full_update)
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# image = Image.new('1', (epd1in54.EPD_WIDTH, epd1in54.EPD_HEIGHT), 255)
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# ...
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# drawing ......
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# ...
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# epd.display(getbuffer(image))
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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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import epdconfig
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from PIL import Image
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import RPi.GPIO as GPIO
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# Display resolution
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EPD_WIDTH = 200
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EPD_HEIGHT = 200
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# EPD1IN54 commands
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DRIVER_OUTPUT_CONTROL = 0x01
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BOOSTER_SOFT_START_CONTROL = 0x0C
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GATE_SCAN_START_POSITION = 0x0F
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DEEP_SLEEP_MODE = 0x10
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DATA_ENTRY_MODE_SETTING = 0x11
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SW_RESET = 0x12
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TEMPERATURE_SENSOR_CONTROL = 0x1A
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MASTER_ACTIVATION = 0x20
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DISPLAY_UPDATE_CONTROL_1 = 0x21
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DISPLAY_UPDATE_CONTROL_2 = 0x22
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WRITE_RAM = 0x24
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WRITE_VCOM_REGISTER = 0x2C
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WRITE_LUT_REGISTER = 0x32
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SET_DUMMY_LINE_PERIOD = 0x3A
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SET_GATE_TIME = 0x3B
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BORDER_WAVEFORM_CONTROL = 0x3C
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SET_RAM_X_ADDRESS_START_END_POSITION = 0x44
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SET_RAM_Y_ADDRESS_START_END_POSITION = 0x45
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SET_RAM_X_ADDRESS_COUNTER = 0x4E
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SET_RAM_Y_ADDRESS_COUNTER = 0x4F
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TERMINATE_FRAME_READ_WRITE = 0xFF
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class EPD:
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def __init__(self):
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self.reset_pin = epdconfig.RST_PIN
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self.dc_pin = epdconfig.DC_PIN
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self.busy_pin = epdconfig.BUSY_PIN
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self.cs_pin = epdconfig.CS_PIN
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self.width = EPD_WIDTH
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self.height = EPD_HEIGHT
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lut_full_update = [
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0x02, 0x02, 0x01, 0x11, 0x12, 0x12, 0x22, 0x22,
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0x66, 0x69, 0x69, 0x59, 0x58, 0x99, 0x99, 0x88,
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0x00, 0x00, 0x00, 0x00, 0xF8, 0xB4, 0x13, 0x51,
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0x35, 0x51, 0x51, 0x19, 0x01, 0x00
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]
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lut_partial_update = [
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0x10, 0x18, 0x18, 0x08, 0x18, 0x18, 0x08, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x13, 0x14, 0x44, 0x12,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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]
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# Hardware reset
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def reset(self):
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epdconfig.digital_write(self.reset_pin, GPIO.HIGH)
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epdconfig.delay_ms(200)
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epdconfig.digital_write(self.reset_pin, GPIO.LOW) # module reset
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epdconfig.delay_ms(200)
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epdconfig.digital_write(self.reset_pin, GPIO.HIGH)
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epdconfig.delay_ms(200)
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def send_command(self, command):
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epdconfig.digital_write(self.cs_pin, GPIO.LOW)
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epdconfig.digital_write(self.dc_pin, GPIO.HIGH)
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epdconfig.spi_writebyte([command])
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epdconfig.digital_write(self.cs_pin, GPIO.HIGH)
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def send_data(self, data):
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epdconfig.digital_write(self.cs_pin, GPIO.LOW)
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epdconfig.digital_write(self.dc_pin, GPIO.HIGH)
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epdconfig.spi_writebyte([data])
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epdconfig.digital_write(self.cs_pin, GPIO.HIGH)
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def wait_until_idle(self):
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while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy
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epdconfig.delay_ms(100)
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def TurnOnDisplay(self):
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self.send_command(DISPLAY_UPDATE_CONTROL_2)
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self.send_data(0xC4)
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self.send_command(MASTER_ACTIVATION)
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self.send_command(TERMINATE_FRAME_READ_WRITE)
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self.wait_until_idle()
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def SetWindow(self, x_start, y_start, x_end, y_end):
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self.send_command(SET_RAM_X_ADDRESS_START_END_POSITION)
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# x point must be the multiple of 8 or the last 3 bits will be ignored
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self.send_data((x_start >> 3) & 0xFF)
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self.send_data((x_end >> 3) & 0xFF)
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self.send_command(SET_RAM_Y_ADDRESS_START_END_POSITION)
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self.send_data(y_start & 0xFF)
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self.send_data((y_start >> 8) & 0xFF)
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self.send_data(y_end & 0xFF)
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self.send_data((y_end >> 8) & 0xFF)
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def SetCursor(self, x, y):
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self.send_command(SET_RAM_X_ADDRESS_COUNTER)
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# x point must be the multiple of 8 or the last 3 bits will be ignored
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self.send_data((x >> 3) & 0xFF)
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self.send_command(SET_RAM_Y_ADDRESS_COUNTER)
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self.send_data(y & 0xFF)
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self.send_data((y >> 8) & 0xFF)
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self.wait_until_idle()
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def init(self, lut):
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if (epdconfig.module_init() != 0):
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return -1
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# EPD hardware init start
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self.reset()
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self.send_command(DRIVER_OUTPUT_CONTROL)
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self.send_data((EPD_HEIGHT - 1) & 0xFF)
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self.send_data(((EPD_HEIGHT - 1) >> 8) & 0xFF)
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self.send_data(0x00) # GD = 0 SM = 0 TB = 0
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self.send_command(BOOSTER_SOFT_START_CONTROL)
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self.send_data(0xD7)
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self.send_data(0xD6)
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self.send_data(0x9D)
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self.send_command(WRITE_VCOM_REGISTER)
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self.send_data(0xA8) # VCOM 7C
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self.send_command(SET_DUMMY_LINE_PERIOD)
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self.send_data(0x1A) # 4 dummy lines per gate
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self.send_command(SET_GATE_TIME)
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self.send_data(0x08) # 2us per line
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self.send_command(DATA_ENTRY_MODE_SETTING)
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self.send_data(0x03) # X increment Y increment
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self.send_command(WRITE_LUT_REGISTER)
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for i in range(0, len(lut)):
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self.send_data(lut[i])
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# EPD hardware init end
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return 0
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def getbuffer(self, image):
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buf = [0xFF] * ((self.width/8) * self.height)
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image_monocolor = image.convert('1')
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imwidth, imheight = image_monocolor.size
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pixels = image_monocolor.load()
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if(imwidth == self.width and imheight == self.height):
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print "Horizontal"
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for y in range(imheight):
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for x in range(imwidth):
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# Set the bits for the column of pixels at the current position.
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if pixels[x, y] == 0:
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buf[(x + y * self.width) / 8] &= ~(0x80 >> (x % 8))
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elif(imwidth == self.height and imheight == self.width):
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print "Vertical"
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for y in range(imheight):
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for x in range(imwidth):
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newx = y
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newy = self.height - x - 1
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if pixels[x, y] == 0:
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buf[(newx + newy*self.width) / 8] &= ~(0x80 >> (y % 8))
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return buf
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def display(self, image):
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if (image == None):
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return
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self.SetWindow(0, 0, self.width, self.height)
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for j in range(0, self.height):
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self.SetCursor(0, j)
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self.send_command(WRITE_RAM)
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for i in range(0, self.width / 8):
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self.send_data(image[i + j * (self.width / 8)])
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self.TurnOnDisplay()
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def Clear(self, color):
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# self.SetWindow(0, 0, self.width - 1, self.height - 1)
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# send the color data
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self.SetWindow(0, 0, self.width, self.height)
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for j in range(0, self.height):
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self.SetCursor(0, j)
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self.send_command(WRITE_RAM)
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for i in range(0, self.width / 8):
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self.send_data(color)
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self.TurnOnDisplay()
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def sleep(self):
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self.send_command(DEEP_SLEEP_MODE)
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self.send_data(0x01)
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### END OF FILE ###
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