"""
* | File : epd7in5.py
* | Author : Waveshare team
* | Function : Electronic paper driver
* | Info :
*----------------
* | This version: V4.0
* | Date : 2019-06-20
# | Info : python demo
-----------------------------------------------------------------------------
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 logging
from inkycal.display.drivers import epdconfig
# Display resolution
EPD_WIDTH = 640
EPD_HEIGHT = 384
class EPD:
def __init__(self):
self.reset_pin = epdconfig.RST_PIN
self.dc_pin = epdconfig.DC_PIN
self.busy_pin = epdconfig.BUSY_PIN
self.cs_pin = epdconfig.CS_PIN
self.width = EPD_WIDTH
self.height = EPD_HEIGHT
# Hardware reset
def reset(self):
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(200)
epdconfig.digital_write(self.reset_pin, 0)
epdconfig.delay_ms(10)
epdconfig.digital_write(self.reset_pin, 1)
epdconfig.delay_ms(200)
def send_command(self, command):
epdconfig.digital_write(self.dc_pin, 0)
epdconfig.digital_write(self.cs_pin, 0)
epdconfig.spi_writebyte([command])
epdconfig.digital_write(self.cs_pin, 1)
def send_data(self, data):
epdconfig.digital_write(self.dc_pin, 1)
epdconfig.digital_write(self.cs_pin, 0)
epdconfig.spi_writebyte([data])
epdconfig.digital_write(self.cs_pin, 1)
def ReadBusy(self):
logging.debug("e-Paper busy")
while (epdconfig.digital_read(self.busy_pin) == 0): # 0: idle, 1: busy
epdconfig.delay_ms(100)
logging.debug("e-Paper busy release")
def init(self):
if (epdconfig.module_init() != 0):
return -1
# EPD hardware init start
self.reset()
self.send_command(0x01) # POWER_SETTING
self.send_data(0x37)
self.send_data(0x00)
self.send_command(0x00) # PANEL_SETTING
self.send_data(0xCF)
self.send_data(0x08)
self.send_command(0x06) # BOOSTER_SOFT_START
self.send_data(0xc7)
self.send_data(0xcc)
self.send_data(0x28)
self.send_command(0x04) # POWER_ON
self.ReadBusy()
self.send_command(0x30) # PLL_CONTROL
self.send_data(0x3c)
self.send_command(0x41) # TEMPERATURE_CALIBRATION
self.send_data(0x00)
self.send_command(0x50) # VCOM_AND_DATA_INTERVAL_SETTING
self.send_data(0x77)
self.send_command(0x60) # TCON_SETTING
self.send_data(0x22)
self.send_command(0x61) # 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(0x82) # 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):
logging.debug("1234")
buf = [0x00] * int(self.width * self.height / 4)
image_monocolor = image.convert('1')
imwidth, imheight = image_monocolor.size
pixels = image_monocolor.load()
logging.debug('imwidth = %d imheight = %d ', imwidth, 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[int((x + y * self.width) / 4)] &= ~(0xC0 >> (x % 4 * 2))
elif pixels[x, y] < 192: # convert gray to red
buf[int((x + y * self.width) / 4)] &= ~(0xC0 >> (x % 4 * 2))
buf[int((x + y * self.width) / 4)] |= 0x40 >> (x % 4 * 2)
else: # white
buf[int((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[int((newx + newy * self.width) / 4)] &= ~(0xC0 >> (y % 4 * 2))
elif pixels[x, y] < 192: # convert gray to red
buf[int((newx + newy * self.width) / 4)] &= ~(0xC0 >> (y % 4 * 2))
buf[int((newx + newy * self.width) / 4)] |= 0x40 >> (y % 4 * 2)
else: # white
buf[int((newx + newy * self.width) / 4)] |= 0xC0 >> (y % 4 * 2)
return buf
def display(self, image):
self.send_command(0x10)
for i in range(0, int(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(0x12)
epdconfig.delay_ms(100)
self.ReadBusy()
def Clear(self):
self.send_command(0x10)
for i in range(0, int(self.width / 4 * self.height)):
for j in range(0, 4):
self.send_data(0x33)
self.send_command(0x12)
self.ReadBusy()
def sleep(self):
self.send_command(0x02) # POWER_OFF
self.ReadBusy()
self.send_command(0x07) # DEEP_SLEEP
self.send_data(0XA5)
epdconfig.module_exit()
### END OF FILE ###