从并行端口上的特定引脚读取 [英] Reading from a specific pin on parallel port

问题描述

你好

我所需要的只是读取并行端口的引脚12上的同步25ms脉冲.任何人都可以指出我如何访问c#中的单个引脚输入的方向吗?

谢谢！

解决方案

您可以阅读此

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单个引脚没有地址，但是您可以将输入字与二进制模式进行与"运算以确定一个引脚的值.至于监视和响应单个引脚值，而不是通过连续轮询端口来延迟应用程序的其余部分(以及整个PC)，请创建一个线程来处理此问题，并在该值更改时通知您的主应用程序.

Hello

All I need is to read a synchronisation 25ms pulse on pin 12 of the parallel port. Can anyone point me to the direction of how to do access an individual pin input in c#?

thanks!

解决方案

you can read this

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Please vote and Accept Answer if it Helped.

Individual pins do not have addresses, but you can AND the input word with a binary pattern to determine the value of just one pin. As for monitoring and responding to a single pin value, rather than delaying the rest of your app (and the entire PC) by continuously polling the port, create a thread to handle this and notify your main app when the value changes.

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