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- # /*****************************************************************************
- # * | File : config.py
- # * | Author : Waveshare team
- # * | Function : Hardware underlying interface,for Raspberry pi
- # * | Info :
- # *----------------
- # * | This version: V1.0
- # * | Date : 2020-06-17
- # * | 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 time
- from smbus import SMBus
- import spidev
- import ctypes
- from gpiozero import *
- Device_SPI = 1
- Device_I2C = 0
- class RaspberryPi:
- def __init__(self,spi=spidev.SpiDev(0,0),spi_freq=10000000,rst = 27,dc = 25,bl = 18,bl_freq=1000,i2c=None):
- self.INPUT = False
- self.OUTPUT = True
-
- self.SPEED =spi_freq
- if(Device_SPI == 1):
- self.Device = Device_SPI
- self.spi = spi
- else :
- self.Device = Device_I2C
- self.address = 0x3c
- self.bus = SMBus(1)
-
- self.RST_PIN = self.gpio_mode(rst,self.OUTPUT)
- self.DC_PIN = self.gpio_mode(dc,self.OUTPUT)
- def delay_ms(self,delaytime):
- time.sleep(delaytime / 1000.0)
- def gpio_mode(self,Pin,Mode,pull_up = None,active_state = True):
- if Mode:
- return DigitalOutputDevice(Pin,active_high = True,initial_value =False)
- else:
- return DigitalInputDevice(Pin,pull_up=pull_up,active_state=active_state)
- def digital_write(self, Pin, value):
- if value:
- Pin.on()
- else:
- Pin.off()
- def digital_read(self, Pin):
- return Pin.value
- def spi_writebyte(self,data):
- self.spi.writebytes([data[0]])
- def i2c_writebyte(self,reg, value):
- self.bus.write_byte_data(self.address, reg, value)
-
- def module_init(self):
- self.digital_write(self.RST_PIN,False)
- if(self.Device == Device_SPI):
- self.spi.max_speed_hz = self.SPEED
- self.spi.mode = 0b11
- self.digital_write(self.DC_PIN,False)
- return 0
- def module_exit(self):
- if(self.Device == Device_SPI):
- self.spi.close()
- else :
- self.bus.close()
- self.digital_write(self.RST_PIN,False)
- self.digital_write(self.DC_PIN,False)
- ### END OF FILE ###
|
