112 lines
3.0 KiB
Python
112 lines
3.0 KiB
Python
# /*****************************************************************************
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# * | File : config.py
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# * | Author : Waveshare team
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# * | Function : Hardware underlying interface,for Jetson nano
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# * | Info :
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# *----------------
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# * | This version: V1.0
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# * | Date : 2019-06-06
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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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from smbus import SMBus
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import spidev
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import ctypes
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# import spidev
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# Pin definition
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RST_PIN = 25
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DC_PIN = 24
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CS_PIN = 8
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BL_PIN = 18
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BUSY_PIN = 18
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Device_SPI = 1
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Device_I2C = 0
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if(Device_SPI == 1):
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Device = Device_SPI
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spi = spidev.SpiDev(0, 0)
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else :
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Device = Device_I2C
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address = 0x3C
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bus = SMBus(1)
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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(BUSY_PIN)
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def delay_ms(delaytime):
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time.sleep(delaytime / 1000.0)
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def spi_writebyte(data):
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# SPI.writebytes(data)
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spi.writebytes([data[0]])
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def i2c_writebyte(reg, value):
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bus.write_byte_data(address, reg, value)
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# time.sleep(0.01)
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def module_init():
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# print("module_init")
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GPIO.setmode(GPIO.BCM)
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GPIO.setwarnings(False)
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GPIO.setup(RST_PIN, GPIO.OUT)
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GPIO.setup(DC_PIN, GPIO.OUT)
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GPIO.setup(CS_PIN, GPIO.OUT)
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GPIO.setup(BL_PIN, GPIO.OUT)
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# SPI.max_speed_hz = 2000000
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# SPI.mode = 0b00
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# i2c_writebyte(0xff,0xff)
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if(Device == Device_SPI):
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# spi.SYSFS_software_spi_begin()
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# spi.SYSFS_software_spi_setDataMode(0);
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# spi.SYSFS_software_spi_setClockDivider(1);
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spi.max_speed_hz = 2000000
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spi.mode = 0b00
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GPIO.output(CS_PIN, 0)
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GPIO.output(BL_PIN, 1)
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GPIO.output(DC_PIN, 0)
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return 0
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def module_exit():
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if(Device == Device_SPI):
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spi.SYSFS_software_spi_end()
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else :
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bus.close()
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GPIO.output(RST_PIN, 0)
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GPIO.output(DC_PIN, 0)
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### END OF FILE ###
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