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epd1in54.py
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# /*****************************************************************************
# * | File : EPD_1in54.py
# * | Author : Waveshare team
# * | Function : Electronic paper driver
# * | Info :
# *----------------
# * | This version: V3.0
# * | Date : 2018-11-01
# * | Info : python3 demo
# * 1.Remove:
# digital_write(self, pin, value)
# digital_read(self, pin)
# delay_ms(self, delaytime)
# set_lut(self, lut)
# self.lut = self.lut_full_update
# * 2.Change:
# display_frame -> TurnOnDisplay
# set_memory_area -> SetWindow
# set_memory_pointer -> SetCursor
# * 3.How to use
# epd = epd1in54.EPD()
# epd.init(epd.lut_full_update)
# image = Image.new('1', (epd1in54.EPD_WIDTH, epd1in54.EPD_HEIGHT), 255)
# ...
# drawing ......
# ...
# epd.display(getbuffer(image))
# ******************************************************************************/
# 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.
#
import epdconfig
from PIL import Image
import RPi.GPIO as GPIO
# Display resolution
EPD_WIDTH = 200
EPD_HEIGHT = 200
# EPD1IN54 commands
DRIVER_OUTPUT_CONTROL = 0x01
BOOSTER_SOFT_START_CONTROL = 0x0C
GATE_SCAN_START_POSITION = 0x0F
DEEP_SLEEP_MODE = 0x10
DATA_ENTRY_MODE_SETTING = 0x11
SW_RESET = 0x12
TEMPERATURE_SENSOR_CONTROL = 0x1A
MASTER_ACTIVATION = 0x20
DISPLAY_UPDATE_CONTROL_1 = 0x21
DISPLAY_UPDATE_CONTROL_2 = 0x22
WRITE_RAM = 0x24
WRITE_VCOM_REGISTER = 0x2C
WRITE_LUT_REGISTER = 0x32
SET_DUMMY_LINE_PERIOD = 0x3A
SET_GATE_TIME = 0x3B
BORDER_WAVEFORM_CONTROL = 0x3C
SET_RAM_X_ADDRESS_START_END_POSITION = 0x44
SET_RAM_Y_ADDRESS_START_END_POSITION = 0x45
SET_RAM_X_ADDRESS_COUNTER = 0x4E
SET_RAM_Y_ADDRESS_COUNTER = 0x4F
TERMINATE_FRAME_READ_WRITE = 0xFF
class EPD:
def __init__(self):
self.reset_pin = epdconfig.RST_PIN
self.dc_pin = epdconfig.DC_PIN
self.busy_pin = epdconfig.BUSY_PIN
self.width = EPD_WIDTH
self.height = EPD_HEIGHT
lut_full_update = [
0x02, 0x02, 0x01, 0x11, 0x12, 0x12, 0x22, 0x22,
0x66, 0x69, 0x69, 0x59, 0x58, 0x99, 0x99, 0x88,
0x00, 0x00, 0x00, 0x00, 0xF8, 0xB4, 0x13, 0x51,
0x35, 0x51, 0x51, 0x19, 0x01, 0x00
]
lut_partial_update = [
0x10, 0x18, 0x18, 0x08, 0x18, 0x18, 0x08, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x13, 0x14, 0x44, 0x12,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
]
# Hardware reset
def reset(self):
epdconfig.digital_write(self.reset_pin, GPIO.HIGH)
epdconfig.delay_ms(200)
epdconfig.digital_write(self.reset_pin, GPIO.LOW) # module reset
epdconfig.delay_ms(200)
epdconfig.digital_write(self.reset_pin, GPIO.HIGH)
epdconfig.delay_ms(200)
def send_command(self, command):
epdconfig.digital_write(self.dc_pin, GPIO.LOW)
epdconfig.spi_writebyte([command])
def send_data(self, data):
epdconfig.digital_write(self.dc_pin, GPIO.HIGH)
epdconfig.spi_writebyte([data])
def wait_until_idle(self):
while(epdconfig.digital_read(self.busy_pin) == 1): # 0: idle, 1: busy
epdconfig.delay_ms(100)
def TurnOnDisplay(self):
self.send_command(DISPLAY_UPDATE_CONTROL_2)
self.send_data(0xC4)
self.send_command(MASTER_ACTIVATION)
self.send_command(TERMINATE_FRAME_READ_WRITE)
self.wait_until_idle()
def SetWindow(self, x_start, y_start, x_end, y_end):
self.send_command(SET_RAM_X_ADDRESS_START_END_POSITION)
# x point must be the multiple of 8 or the last 3 bits will be ignored
self.send_data((x_start >> 3) & 0xFF)
self.send_data((x_end >> 3) & 0xFF)
self.send_command(SET_RAM_Y_ADDRESS_START_END_POSITION)
self.send_data(y_start & 0xFF)
self.send_data((y_start >> 8) & 0xFF)
self.send_data(y_end & 0xFF)
self.send_data((y_end >> 8) & 0xFF)
def SetCursor(self, x, y):
self.send_command(SET_RAM_X_ADDRESS_COUNTER)
# x point must be the multiple of 8 or the last 3 bits will be ignored
self.send_data((x >> 3) & 0xFF)
self.send_command(SET_RAM_Y_ADDRESS_COUNTER)
self.send_data(y & 0xFF)
self.send_data((y >> 8) & 0xFF)
self.wait_until_idle()
def init(self, lut):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.send_command(DRIVER_OUTPUT_CONTROL)
self.send_data((EPD_HEIGHT - 1) & 0xFF)
self.send_data(((EPD_HEIGHT - 1) >> 8) & 0xFF)
self.send_data(0x00) # GD = 0 SM = 0 TB = 0
self.send_command(BOOSTER_SOFT_START_CONTROL)
self.send_data(0xD7)
self.send_data(0xD6)
self.send_data(0x9D)
self.send_command(WRITE_VCOM_REGISTER)
self.send_data(0xA8) # VCOM 7C
self.send_command(SET_DUMMY_LINE_PERIOD)
self.send_data(0x1A) # 4 dummy lines per gate
self.send_command(SET_GATE_TIME)
self.send_data(0x08) # 2us per line
self.send_command(DATA_ENTRY_MODE_SETTING)
self.send_data(0x03) # X increment Y increment
self.send_command(WRITE_LUT_REGISTER)
for i in range(0, len(lut)):
self.send_data(lut[i])
# EPD hardware init end
return 0
def getbuffer(self, image):
buf = [0xFF] * (self.width * self.height // 8)
# Set buffer to value of Python Imaging Library image.
# Image must be in mode 1.
image_monocolor = image.convert('1')
imwidth, imheight = image_monocolor.size
if imwidth != self.width or imheight != self.height:
raise ValueError('Image must be same dimensions as display \
({0}x{1}).' .format(self.width, self.height))
pixels = image_monocolor.load()
for y in range(self.height):
for x in range(self.width):
# Set the bits for the column of pixels at the current position.
if pixels[x, y] == 0:
buf[(x + y * self.width) // 8] &= ~(0x80 >> (x % 8))
return buf
def display(self, image):
if (image == None):
return
self.SetWindow(0, 0, self.width, self.height)
for j in range(0, self.height):
self.SetCursor(0, j)
self.send_command(WRITE_RAM)
for i in range(0, self.width // 8):
self.send_data(image[i + j * (self.width // 8)])
self.TurnOnDisplay()
def Clear(self, color):
self.SetWindow(0, 0, self.width, self.height)
for j in range(0, self.height):
self.SetCursor(0, j)
self.send_command(WRITE_RAM)
for i in range(0, self.width // 8):
self.send_data(color)
self.TurnOnDisplay()
def sleep(self):
self.send_command(DEEP_SLEEP_MODE)
self.send_data(0x01)