129 lines
3.9 KiB
Python
129 lines
3.9 KiB
Python
"""
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* | File : epdconfig.py
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* | Author : Waveshare team
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* | Function : Hardware underlying interface
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* | Info :
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*----------------
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* | This version: V1.2
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* | Date : 2022-10-29
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* | Info :
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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 documentation 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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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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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 logging
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import sys
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import time
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logger = logging.getLogger(__name__)
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class RaspberryPi:
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# Pin definition
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RST_PIN = 17
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DC_PIN = 25
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CS_PIN = 8
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BUSY_PIN = 24
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PWR_PIN = 18
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def __init__(self):
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import spidev
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import gpiozero
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self.SPI = spidev.SpiDev()
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self.GPIO_RST_PIN = gpiozero.LED(self.RST_PIN)
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self.GPIO_DC_PIN = gpiozero.LED(self.DC_PIN)
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# self.GPIO_CS_PIN = gpiozero.LED(self.CS_PIN)
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self.GPIO_PWR_PIN = gpiozero.LED(self.PWR_PIN)
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self.GPIO_BUSY_PIN = gpiozero.Button(self.BUSY_PIN, pull_up=False)
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def digital_write(self, pin, value):
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if pin == self.RST_PIN:
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if value:
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self.GPIO_RST_PIN.on()
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else:
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self.GPIO_RST_PIN.off()
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elif pin == self.DC_PIN:
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if value:
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self.GPIO_DC_PIN.on()
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else:
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self.GPIO_DC_PIN.off()
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# elif pin == self.CS_PIN:
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# if value:
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# self.GPIO_CS_PIN.on()
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# else:
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# self.GPIO_CS_PIN.off()
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elif pin == self.PWR_PIN:
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if value:
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self.GPIO_PWR_PIN.on()
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else:
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self.GPIO_PWR_PIN.off()
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def digital_read(self, pin):
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if pin == self.BUSY_PIN:
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return self.GPIO_BUSY_PIN.value
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elif pin == self.RST_PIN:
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return self.RST_PIN.value
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elif pin == self.DC_PIN:
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return self.DC_PIN.value
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# elif pin == self.CS_PIN:
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# return self.CS_PIN.value
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elif pin == self.PWR_PIN:
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return self.PWR_PIN.value
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def delay_ms(self, delaytime):
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time.sleep(delaytime / 1000.0)
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def spi_writebyte(self, data):
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self.SPI.writebytes(data)
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def spi_writebyte2(self, data):
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self.SPI.writebytes2(data)
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def module_init(self):
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self.GPIO_PWR_PIN.on()
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# SPI device, bus = 0, device = 0
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self.SPI.open(0, 0)
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self.SPI.max_speed_hz = 4000000
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self.SPI.mode = 0b00
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return 0
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def module_exit(self, cleanup=False):
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logger.debug("spi end")
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self.SPI.close()
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self.GPIO_RST_PIN.off()
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self.GPIO_DC_PIN.off()
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self.GPIO_PWR_PIN.off()
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logger.debug("close 5V, Module enters 0 power consumption ...")
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if cleanup:
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self.GPIO_RST_PIN.close()
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self.GPIO_DC_PIN.close()
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# self.GPIO_CS_PIN.close()
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self.GPIO_PWR_PIN.close()
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self.GPIO_BUSY_PIN.close()
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implementation = RaspberryPi()
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for func in [x for x in dir(implementation) if not x.startswith('_')]:
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setattr(sys.modules[__name__], func, getattr(implementation, func))
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