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epdconfig.py
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epdconfig.py
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# /*****************************************************************************
# * | File : epdconfig.py
# * | Author : Waveshare electrices
# * | Function : Hardware underlying interface
# * | Info :
# *----------------
# * | This version: V1.0
# * | Date : 2019-11-01
# * | Info :
# ******************************************************************************/
# 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 RPi.GPIO as GPIO
import time
import os
import logging
import sys
from ctypes import *
EPD_SCK_PIN =11
EPD_MOSI_PIN =10
EPD_M1_CS_PIN =8
EPD_S1_CS_PIN =7
EPD_M2_CS_PIN =17
EPD_S2_CS_PIN =18
EPD_M1S1_DC_PIN =13
EPD_M2S2_DC_PIN =22
EPD_M1S1_RST_PIN =6
EPD_M2S2_RST_PIN =23
EPD_M1_BUSY_PIN =5
EPD_S1_BUSY_PIN =19
EPD_M2_BUSY_PIN =27
EPD_S2_BUSY_PIN =24
find_dirs = [
os.path.dirname(os.path.realpath(__file__)),
'/usr/local/lib',
'/usr/lib',
]
spi = None
for find_dir in find_dirs:
so_filename = os.path.join(find_dir, 'DEV_Config.so')
if os.path.exists(so_filename):
spi = CDLL(so_filename)
break
if spi is None:
RuntimeError('Cannot find DEV_Config.so')
def digital_write(pin, value):
GPIO.output(pin, value)
def digital_read(pin):
return GPIO.input(pin)
def spi_writebyte(value):
spi.DEV_SPI_WriteByte(value)
def delay_ms(delaytime):
time.sleep(delaytime / 1000.0)
def module_init():
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(EPD_SCK_PIN, GPIO.OUT)
GPIO.setup(EPD_MOSI_PIN, GPIO.OUT)
logging.debug("python call wiringPi Lib")
GPIO.setup(EPD_M2S2_RST_PIN, GPIO.OUT)
GPIO.setup(EPD_M1S1_RST_PIN, GPIO.OUT)
GPIO.setup(EPD_M2S2_DC_PIN, GPIO.OUT)
GPIO.setup(EPD_M1S1_DC_PIN, GPIO.OUT)
GPIO.setup(EPD_S1_CS_PIN, GPIO.OUT)
GPIO.setup(EPD_S2_CS_PIN, GPIO.OUT)
GPIO.setup(EPD_M1_CS_PIN, GPIO.OUT)
GPIO.setup(EPD_M2_CS_PIN, GPIO.OUT)
GPIO.setup(EPD_S1_BUSY_PIN, GPIO.IN)
GPIO.setup(EPD_S2_BUSY_PIN, GPIO.IN)
GPIO.setup(EPD_M1_BUSY_PIN, GPIO.IN)
GPIO.setup(EPD_M2_BUSY_PIN, GPIO.IN)
digital_write(EPD_M1_CS_PIN, 1)
digital_write(EPD_S1_CS_PIN, 1)
digital_write(EPD_M2_CS_PIN, 1)
digital_write(EPD_S2_CS_PIN, 1)
digital_write(EPD_M2S2_RST_PIN, 0)
digital_write(EPD_M1S1_RST_PIN, 0)
digital_write(EPD_M2S2_DC_PIN, 1)
digital_write(EPD_M1S1_DC_PIN, 1)
spi.DEV_ModuleInit()
def module_exit():
digital_write(EPD_M2S2_RST_PIN, 0)
digital_write(EPD_M1S1_RST_PIN, 0)
digital_write(EPD_M2S2_DC_PIN, 0)
digital_write(EPD_M1S1_DC_PIN, 0)
digital_write(EPD_S1_CS_PIN, 1)
digital_write(EPD_S2_CS_PIN, 1)
digital_write(EPD_M1_CS_PIN, 1)
digital_write(EPD_M2_CS_PIN, 1)
def spi_readbyte(Reg):
GPIO.setup(EPD_MOSI_PIN, GPIO.IN)
j=0
# time.sleep(0.01)
for i in range(0, 8):
GPIO.output(EPD_SCK_PIN, GPIO.LOW)
# time.sleep(0.01)
j = j << 1
if(GPIO.input(EPD_MOSI_PIN) == GPIO.HIGH):
j |= 0x01
else:
j &= 0xfe
# time.sleep(0.01)
GPIO.output(EPD_SCK_PIN, GPIO.HIGH)
# time.sleep(0.01)
GPIO.setup(EPD_MOSI_PIN, GPIO.OUT)
return j
def delay_ms(delaytime):
time.sleep(delaytime / 1000.0)