157 lines
4.9 KiB
Python
157 lines
4.9 KiB
Python
# /*****************************************************************************
|
|
# * | File : epdconfig.py
|
|
# * | Author : Waveshare team
|
|
# * | Function : Hardware underlying interface
|
|
# * | Info :
|
|
# *----------------
|
|
# * | This version: V1.0
|
|
# * | Date : 2019-06-21
|
|
# * | 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 os
|
|
import logging
|
|
import sys
|
|
import time
|
|
|
|
filename = os.path.basename(__file__).split('.py')[0]
|
|
logger = logging.getLogger(filename)
|
|
|
|
class RaspberryPi:
|
|
# Pin definition
|
|
RST_PIN = 17
|
|
DC_PIN = 25
|
|
CS_PIN = 8
|
|
BUSY_PIN = 24
|
|
|
|
def __init__(self):
|
|
import spidev
|
|
import RPi.GPIO
|
|
|
|
self.GPIO = RPi.GPIO
|
|
|
|
# SPI device, bus = 0, device = 0
|
|
self.SPI = spidev.SpiDev(0, 0)
|
|
|
|
def digital_write(self, pin, value):
|
|
self.GPIO.output(pin, value)
|
|
|
|
def digital_read(self, pin):
|
|
return self.GPIO.input(pin)
|
|
|
|
def delay_ms(self, delaytime):
|
|
time.sleep(delaytime / 1000.0)
|
|
|
|
def spi_writebyte(self, data):
|
|
self.SPI.writebytes(data)
|
|
|
|
def module_init(self):
|
|
self.GPIO.setmode(self.GPIO.BCM)
|
|
self.GPIO.setwarnings(False)
|
|
self.GPIO.setup(self.RST_PIN, self.GPIO.OUT)
|
|
self.GPIO.setup(self.DC_PIN, self.GPIO.OUT)
|
|
self.GPIO.setup(self.CS_PIN, self.GPIO.OUT)
|
|
self.GPIO.setup(self.BUSY_PIN, self.GPIO.IN)
|
|
self.SPI.max_speed_hz = 4000000
|
|
self.SPI.mode = 0b00
|
|
return 0
|
|
|
|
def module_exit(self):
|
|
logger.debug("spi end")
|
|
#self.SPI.close() #removed as it causes some problems
|
|
|
|
logger.debug("close 5V, Module enters 0 power consumption ...")
|
|
self.GPIO.output(self.RST_PIN, 0)
|
|
self.GPIO.output(self.DC_PIN, 0)
|
|
|
|
self.GPIO.cleanup()
|
|
|
|
|
|
class JetsonNano:
|
|
# Pin definition
|
|
RST_PIN = 17
|
|
DC_PIN = 25
|
|
CS_PIN = 8
|
|
BUSY_PIN = 24
|
|
|
|
def __init__(self):
|
|
import ctypes
|
|
find_dirs = [
|
|
os.path.dirname(os.path.realpath(__file__)),
|
|
'/usr/local/lib',
|
|
'/usr/lib',
|
|
]
|
|
self.SPI = None
|
|
for find_dir in find_dirs:
|
|
so_filename = os.path.join(find_dir, 'sysfs_software_spi.so')
|
|
if os.path.exists(so_filename):
|
|
self.SPI = ctypes.cdll.LoadLibrary(so_filename)
|
|
break
|
|
if self.SPI is None:
|
|
raise RuntimeError('Cannot find sysfs_software_spi.so')
|
|
|
|
import Jetson.GPIO
|
|
self.GPIO = Jetson.GPIO
|
|
|
|
def digital_write(self, pin, value):
|
|
self.GPIO.output(pin, value)
|
|
|
|
def digital_read(self, pin):
|
|
return self.GPIO.input(self.BUSY_PIN)
|
|
|
|
def delay_ms(self, delaytime):
|
|
time.sleep(delaytime / 1000.0)
|
|
|
|
def spi_writebyte(self, data):
|
|
self.SPI.SYSFS_software_spi_transfer(data[0])
|
|
|
|
def module_init(self):
|
|
self.GPIO.setmode(self.GPIO.BCM)
|
|
self.GPIO.setwarnings(False)
|
|
self.GPIO.setup(self.RST_PIN, self.GPIO.OUT)
|
|
self.GPIO.setup(self.DC_PIN, self.GPIO.OUT)
|
|
self.GPIO.setup(self.CS_PIN, self.GPIO.OUT)
|
|
self.GPIO.setup(self.BUSY_PIN, self.GPIO.IN)
|
|
self.SPI.SYSFS_software_spi_begin()
|
|
return 0
|
|
|
|
def module_exit(self):
|
|
logger.debug("spi end")
|
|
self.SPI.SYSFS_software_spi_end()
|
|
|
|
logger.debug("close 5V, Module enters 0 power consumption ...")
|
|
self.GPIO.output(self.RST_PIN, 0)
|
|
self.GPIO.output(self.DC_PIN, 0)
|
|
|
|
self.GPIO.cleanup()
|
|
|
|
|
|
if os.path.exists('/sys/bus/platform/drivers/gpiomem-bcm2835'):
|
|
implementation = RaspberryPi()
|
|
else:
|
|
implementation = JetsonNano()
|
|
|
|
for func in [x for x in dir(implementation) if not x.startswith('_')]:
|
|
setattr(sys.modules[__name__], func, getattr(implementation, func))
|
|
|
|
|
|
### END OF FILE ###
|