149 lines
4.3 KiB
Python
149 lines
4.3 KiB
Python
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# /*****************************************************************************
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# * | File : epdconfig.py
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# * | Author : Waveshare electrices
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# * | Function : Hardware underlying interface
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# * | Info :
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# *----------------
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# * | This version: V1.0
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# * | Date : 2019-11-01
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# * | Info :
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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 RPi.GPIO as GPIO
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import time
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import os
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import logging
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import sys
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from ctypes import *
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EPD_SCK_PIN =11
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EPD_MOSI_PIN =10
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EPD_M1_CS_PIN =8
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EPD_S1_CS_PIN =7
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EPD_M2_CS_PIN =17
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EPD_S2_CS_PIN =18
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EPD_M1S1_DC_PIN =13
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EPD_M2S2_DC_PIN =22
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EPD_M1S1_RST_PIN =6
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EPD_M2S2_RST_PIN =23
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EPD_M1_BUSY_PIN =5
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EPD_S1_BUSY_PIN =19
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EPD_M2_BUSY_PIN =27
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EPD_S2_BUSY_PIN =24
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find_dirs = [
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os.path.dirname(os.path.realpath(__file__)),
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'/usr/local/lib',
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'/usr/lib',
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]
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spi = None
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for find_dir in find_dirs:
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so_filename = os.path.join(find_dir, 'epd_12_in_48_lib.so')
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if os.path.exists(so_filename):
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spi = CDLL(so_filename)
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break
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if spi is None:
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RuntimeError('Cannot find epd_12_in_48_lib.so')
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def digital_write(pin, value):
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GPIO.output(pin, value)
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def digital_read(pin):
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return GPIO.input(pin)
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def spi_writebyte(value):
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spi.DEV_SPI_WriteByte(value)
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def delay_ms(delaytime):
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time.sleep(delaytime / 1000.0)
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def module_init():
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GPIO.setmode(GPIO.BCM)
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GPIO.setwarnings(False)
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GPIO.setup(EPD_SCK_PIN, GPIO.OUT)
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GPIO.setup(EPD_MOSI_PIN, GPIO.OUT)
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logging.debug("python call wiringPi Lib")
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GPIO.setup(EPD_M2S2_RST_PIN, GPIO.OUT)
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GPIO.setup(EPD_M1S1_RST_PIN, GPIO.OUT)
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GPIO.setup(EPD_M2S2_DC_PIN, GPIO.OUT)
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GPIO.setup(EPD_M1S1_DC_PIN, GPIO.OUT)
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GPIO.setup(EPD_S1_CS_PIN, GPIO.OUT)
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GPIO.setup(EPD_S2_CS_PIN, GPIO.OUT)
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GPIO.setup(EPD_M1_CS_PIN, GPIO.OUT)
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GPIO.setup(EPD_M2_CS_PIN, GPIO.OUT)
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GPIO.setup(EPD_S1_BUSY_PIN, GPIO.IN)
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GPIO.setup(EPD_S2_BUSY_PIN, GPIO.IN)
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GPIO.setup(EPD_M1_BUSY_PIN, GPIO.IN)
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GPIO.setup(EPD_M2_BUSY_PIN, GPIO.IN)
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digital_write(EPD_M1_CS_PIN, 1)
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digital_write(EPD_S1_CS_PIN, 1)
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digital_write(EPD_M2_CS_PIN, 1)
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digital_write(EPD_S2_CS_PIN, 1)
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digital_write(EPD_M2S2_RST_PIN, 0)
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digital_write(EPD_M1S1_RST_PIN, 0)
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digital_write(EPD_M2S2_DC_PIN, 1)
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digital_write(EPD_M1S1_DC_PIN, 1)
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spi.DEV_ModuleInit()
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def module_exit():
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digital_write(EPD_M2S2_RST_PIN, 0)
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digital_write(EPD_M1S1_RST_PIN, 0)
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digital_write(EPD_M2S2_DC_PIN, 0)
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digital_write(EPD_M1S1_DC_PIN, 0)
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digital_write(EPD_S1_CS_PIN, 1)
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digital_write(EPD_S2_CS_PIN, 1)
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digital_write(EPD_M1_CS_PIN, 1)
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digital_write(EPD_M2_CS_PIN, 1)
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def spi_readbyte(Reg):
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GPIO.setup(EPD_MOSI_PIN, GPIO.IN)
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j=0
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# time.sleep(0.01)
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for i in range(0, 8):
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GPIO.output(EPD_SCK_PIN, GPIO.LOW)
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# time.sleep(0.01)
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j = j << 1
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if(GPIO.input(EPD_MOSI_PIN) == GPIO.HIGH):
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j |= 0x01
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else:
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j &= 0xfe
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# time.sleep(0.01)
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GPIO.output(EPD_SCK_PIN, GPIO.HIGH)
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# time.sleep(0.01)
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GPIO.setup(EPD_MOSI_PIN, GPIO.OUT)
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return j
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def delay_ms(delaytime):
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time.sleep(delaytime / 1000.0)
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