WiringPi上的错误

Question

我正试图在这种模式下通过扭曲来设置我的覆盆子的输出

from twisted.internet.protocol import Factory, Protocol
from twisted.internet import reactor

import smbus
import sys
import getopt
import time
import os
import signal

bus = smbus.SMBus(0)
import wiringpi2 as wiringpi
from time import sleep

class Raspi(Protocol):
  def connectionMade(self):  
     print("A client connected")
  def dataReceived(self, data):

if data == "s1":

 pin_base = 65       
 i2c_addr = 0x20     
 wiringpi.wiringPiSetup()                    
 wiringpi.mcp23017Setup(pin_base,i2c_addr)   
 wiringpi.pinMode(65, 1)           
 sleep (0.3) 
 #

elif data == "s2”:

  pin_base = 65       
  i2c_addr = 0x20     
  wiringpi.wiringPiSetup()                    
  wiringpi.mcp23017Setup(pin_base,i2c_addr)   
  wiringpi.pinMode(65, 0)         
  sleep (0.3)
  #
  else:
  stop()

  # Init and start server
  factory = Factory()
  factory.protocol = MovingRaspi
  reactor.listenTCP(8000, factory, 50, '192.168.0.3')
  reactor.run()

但是，如果我设置了s1，然后设置了s2，那么在WiringPi中就会出现这个错误

wiringPiNewNode: Pin 65与现有定义重叠

Answer 1

• 也许每次运行时只调用一次wiringpiSetup()方法？
• 也许您可以在输出模式之后尝试“清理”端口:在调用wiringPiSetup()或mcp23017Setup()之前将其设置为输入。

来源：如何在Raspbian的Raspberry Pi上使用WiringPi2，第1部分#自己清理