在python中控制数字io的最佳方法是什么答案

【问题标题】：What is best way to control digital io in python在python中控制数字io的最佳方法是什么
【发布时间】：2021-08-25 14:41:25
【问题描述】：

我正在编写一段代码来控制连接到 Jetson nano 的三色灯。

每个 GPIO 引脚都专用于其颜色、引脚和状态。说

Pins[0] = [Color.RED, pin=11, state=State.OFF]   
Pins[1] = [Color.YEL, pin=13, state=State.SOLID_ON]   
Pins[2] = [Color.GRN, pin=15, state=State.BLINK]

在 SetGPIO 函数中，我想像这样命令每个引脚

def SetGPIO(self, color, state):  
   if color == Color.RED:  
       Pins[0].state = state  
   elif color == Color.YEL:  
       Pins[1].state = state  
   elif color == Color.GRN:  
       Pins[2].state = state

然后在每 0.5 秒调用一次的更新函数中，

def Update(self):  
   foreach Pin in Pins  
      if Pins.state == State.off:  
           GPIO.output(Pins.pin, GPIO.LOW)  
      elif Pins.state == State.SOLID_ON:  
           GPIO.outpu(Pins.pin, GPIO.HIGH)  
      elif Pins.state == State.BLINK:  
           toggle GPIO(Pins.pin, state)

关于如何在python中实现这些功能有什么建议吗？

【问题讨论】：

标签： python enums

【解决方案1】：

我设法实现了这样的东西。它看起来好吗？有什么改进或建议吗？

import Jetson.GPIO as GPIO
from enum import Enum

class Color(Enum):
    RED = 0
    YEL = 1
    GRN = 2

class LampState(Enum):
    OFF = 0
    ON = 1
    BLINK = 2

class Lamp:
    def __init__(self, color, pinNum):
        self.color = color
        self.pin = pinNum
        self.state = LampState.OFF
        self.onoff = False
        GPIO.setup(self.pin, GPIO.OUT)
        GPIO.output(self.pin, GPIO.LOW)

    def On(self):
        self.onoff = True
        GPIO.outpu(self.pin, self.onoff)
    
    def Off(self):
        self.onoff = False
        GPIO.output(self.pin, self.onoff)

    def Toggle(self):
        self.onoff = not self.onoff
        GPIO.output(self.pin, self.onoff)
    
    def SetState(self, state):
        self.state = state

class LampHandler:
    def __init__(self):
        GPIO.setmode(GPIO.BOARD)
        self.lamps = [ Lamp(Color.RED, 11),
                        Lamp(Color.YEL, 13),
                        Lamp(Color.GRN, 15)]

    def Update_5Hz(self):
        for i in range(len(self.lamps)):
            if self.lamps[i].state == LampState.BLINK:
                self.lamps[i].Toggle()
            elif self.lamps[i].state == LampState.ON:
                self.lamps[i].On()
            elif self.lamps[i].state == LampState.OFF:
                self.lamps[i].Off()
    
    def SetState(self, color, state):
        if color == Color.RED:
            self.lamps[0].state = state
        elif color == Color.YEL:
            self.lamps[1].state = state
        elif color == Color.GRN:
            self.lamps[2].state = state

【讨论】：