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epd7in5.py
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epd7in5.py
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# /*****************************************************************************
# * | File : epd7in5.py
# * | Author : Waveshare team
# * | Function : Electronic paper driver
# * | Info :
# *----------------
# * | This version: V3.0
# * | Date : 2018-11-12
# * | Info : python2 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
# get_frame_buffer -> getbuffer
# set_frame_memory -> display
# * 3.How to use
# epd = epd2in7.EPD()
# epd.init(epd.lut_full_update)
# image = Image.new('1', (epd7in5.EPD_WIDTH, epd7in5.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 = 640
EPD_HEIGHT = 384
# EPD7IN5 commands
PANEL_SETTING = 0x00
POWER_SETTING = 0x01
POWER_OFF = 0x02
POWER_OFF_SEQUENCE_SETTING = 0x03
POWER_ON = 0x04
POWER_ON_MEASURE = 0x05
BOOSTER_SOFT_START = 0x06
DEEP_SLEEP = 0x07
DATA_START_TRANSMISSION_1 = 0x10
DATA_STOP = 0x11
DISPLAY_REFRESH = 0x12
IMAGE_PROCESS = 0x13
LUT_FOR_VCOM = 0x20
LUT_BLUE = 0x21
LUT_WHITE = 0x22
LUT_GRAY_1 = 0x23
LUT_GRAY_2 = 0x24
LUT_RED_0 = 0x25
LUT_RED_1 = 0x26
LUT_RED_2 = 0x27
LUT_RED_3 = 0x28
LUT_XON = 0x29
PLL_CONTROL = 0x30
TEMPERATURE_SENSOR_COMMAND = 0x40
TEMPERATURE_CALIBRATION = 0x41
TEMPERATURE_SENSOR_WRITE = 0x42
TEMPERATURE_SENSOR_READ = 0x43
VCOM_AND_DATA_INTERVAL_SETTING = 0x50
LOW_POWER_DETECTION = 0x51
TCON_SETTING = 0x60
TCON_RESOLUTION = 0x61
SPI_FLASH_CONTROL = 0x65
REVISION = 0x70
GET_STATUS = 0x71
AUTO_MEASUREMENT_VCOM = 0x80
READ_VCOM_VALUE = 0x81
VCM_DC_SETTING = 0x82
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
# 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):
print("e-Paper busy")
while(epdconfig.digital_read(self.busy_pin) == 0): # 0: idle, 1: busy
epdconfig.delay_ms(100)
print("e-Paper busy release")
def init(self):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.send_command(POWER_SETTING)
self.send_data(0x37)
self.send_data(0x00)
self.send_command(PANEL_SETTING)
self.send_data(0xCF)
self.send_data(0x08)
self.send_command(BOOSTER_SOFT_START)
self.send_data(0xc7)
self.send_data(0xcc)
self.send_data(0x28)
self.send_command(POWER_ON)
self.wait_until_idle()
self.send_command(PLL_CONTROL)
self.send_data(0x3c)
self.send_command(TEMPERATURE_CALIBRATION)
self.send_data(0x00)
self.send_command(VCOM_AND_DATA_INTERVAL_SETTING)
self.send_data(0x77)
self.send_command(TCON_SETTING)
self.send_data(0x22)
self.send_command(TCON_RESOLUTION)
self.send_data(EPD_WIDTH >> 8) #source 640
self.send_data(EPD_WIDTH & 0xff)
self.send_data(EPD_HEIGHT >> 8) #gate 384
self.send_data(EPD_HEIGHT & 0xff)
self.send_command(VCM_DC_SETTING)
self.send_data(0x1E) #decide by LUT file
self.send_command(0xe5) #FLASH MODE
self.send_data(0x03)
# EPD hardware init end
return 0
def getbuffer(self, image):
buf = [0x00] * (self.width * self.height / 4)
image_monocolor = image.convert('1')
imwidth, imheight = image_monocolor.size
pixels = image_monocolor.load()
print("imwidth = ", imwidth, "imheight = ", imheight)
if(imwidth == self.width and imheight == self.height):
for y in range(imheight):
for x in range(imwidth):
# Set the bits for the column of pixels at the current position.
if pixels[x, y] < 64: # black
buf[(x + y * self.width) / 4] &= ~(0xC0 >> (x % 4 * 2))
elif pixels[x, y] < 192: # convert gray to red
buf[(x + y * self.width) / 4] &= ~(0xC0 >> (x % 4 * 2))
buf[(x + y * self.width) / 4] |= 0x40 >> (x % 4 * 2)
else: # white
buf[(x + y * self.width) / 4] |= 0xC0 >> (x % 4 * 2)
elif(imwidth == self.height and imheight == self.width):
for y in range(imheight):
for x in range(imwidth):
newx = y
newy = self.height - x - 1
if pixels[x, y] < 64: # black
buf[(newx + newy*self.width) / 4] &= ~(0xC0 >> (y % 4 * 2))
elif pixels[x, y] < 192: # convert gray to red
buf[(newx + newy*self.width) / 4] &= ~(0xC0 >> (y % 4 * 2))
buf[(newx + newy*self.width) / 4] |= 0x40 >> (y % 4 * 2)
else: # white
buf[(newx + newy*self.width) / 4] |= 0xC0 >> (y % 4 * 2)
return buf
def display(self, image):
self.send_command(DATA_START_TRANSMISSION_1)
for i in range(0, self.width / 4 * self.height):
temp1 = image[i]
j = 0
while (j < 4):
if ((temp1 & 0xC0) == 0xC0):
temp2 = 0x03
elif ((temp1 & 0xC0) == 0x00):
temp2 = 0x00
else:
temp2 = 0x04
temp2 = (temp2 << 4) & 0xFF
temp1 = (temp1 << 2) & 0xFF
j += 1
if((temp1 & 0xC0) == 0xC0):
temp2 |= 0x03
elif ((temp1 & 0xC0) == 0x00):
temp2 |= 0x00
else:
temp2 |= 0x04
temp1 = (temp1 << 2) & 0xFF
self.send_data(temp2)
j += 1
self.send_command(DISPLAY_REFRESH)
epdconfig.delay_ms(100)
self.wait_until_idle()
def Clear(self, color):
self.send_command(DATA_START_TRANSMISSION_1)
for i in range(0, self.width / 4 * self.height):
for j in range(0, 4):
self.send_data(0x33)
self.send_command(DISPLAY_REFRESH)
self.wait_until_idle()
def sleep(self):
self.send_command(POWER_OFF)
self.wait_until_idle()
self.send_command(DEEP_SLEEP)
self.send_data(0XA5)
### END OF FILE ###