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从串口读取数据,有两种方法,1、每接收一个EV_RXCHAR,就用ReadFile读一次,这样我觉得太恐怖了。2、接收到一个EV_RXCHAR后,等一定数据量的...
从串口读取数据,有两种方法,1、每接收一个EV_RXCHAR,就用ReadFile读一次,这样我觉得太恐怖了。2、接收到一个EV_RXCHAR后,等一定数据量的CPU周期(GetTickCount),再一次性读取缓冲区里的数据。这样做,一般情况下不会有问题,但是,如果数据很多,过了“一定数据量的CPU周期”,还没收完数据怎么办?就会少读数据了。 我用三个线程序来完成串口数据的接收,其实就是第一种方法的变种: 一个侦听EV_RXCHAR,一个对EV_RXCHAR进行分析,其实就是超时判断。如果接收到一个消息后,一段时间没收到下一个EV_RXCHAR,就认为是一个数据包的结束。这个线程就会通知数据接收线程,进行数据接收。一般同一包数据,两个字符之间的时间间隔,应该很小了吧,而两个数据包之间的间隔,应该不会太小吧!(这个地方我不清楚,猜的:( :) )最后一个线程,是接收数据的。-read data from the serial port, there are two methods, one, each receiving a EV_RXCHAR, on the ReadFile read, I think this vote. 2, received a EV_RXCHAR after a certain volume of data, such as CPU cycles (GetTickCount), and the one-time reader, the data buffer. To do so, under normal circumstances there is no problem, but if many of the data, and after a "certain amount of data the CPU cycles," also confiscated End Data how do? Few will read the data. I used three lines to complete serial data reception, the first method is a variant : an interception EV_RXCHAR, one pair of EV_RXCHAR analys
- 2023-03-23 09:55:03下载
- 积分:1
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RS422串口编程
rs422串口编程-RS422 serial programming
- 2023-06-03 17:10:03下载
- 积分:1
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Delphi编写的串口测试程序,适合测试计算机串口好坏!
Delphi编写的串口测试程序,适合测试计算机串口好坏!-Delphi serial test procedure for the testing of computer Serial good or bad!
- 2022-09-12 03:35:03下载
- 积分:1
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常用短消息SMS指令一览表及其用法详尽说明,简单易懂。
常用短消息SMS指令一览表及其用法详尽说明,简单易懂。-SMS Short Message commonly used commands and their usage in detail a list of shows that simple.
- 2022-03-04 10:38:44下载
- 积分:1
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VC下读串口的程序,要想进行无线数据传输的话,这是必备的程序...
VC下读串口的程序,要想进行无线数据传输的话,这是必备的程序-Read serial port under the VC process, in order to carry out wireless data transmission, this is the necessary procedures for
- 2022-01-27 21:57:01下载
- 积分:1
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串口通信的东东 串口通信的东东串口通信的
串口通信的东东 串口通信的东东串口通信的-Dongdong serial communications serial communications serial communications Dongdong
- 2023-08-02 23:15:03下载
- 积分:1
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此书是在BCB环境下开发串口通信的一本好书啊。文中详细讲解了串口通信的基本概念,同时很具体的描述了编写的过程并附有源码。...
此书是在BCB环境下开发串口通信的一本好书啊。文中详细讲解了串口通信的基本概念,同时很具体的描述了编写的过程并附有源码。-book is the BCB development environment Serial Communication a good book ah. This paper gave a detailed account of the serial communication the basic concept, but very specific description of the preparation process together with the source code.
- 2022-03-16 12:04:51下载
- 积分:1
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Below is a serial communication part of the original development of the code, wr...
下面是串口通信开发的部分原码,自己写的,可能有些错误,希望大大家指教.-Below is a serial communication part of the original development of the code, wrote it myself, may be some mistakes and we hope that the shortage.
- 2023-03-19 05:30:04下载
- 积分:1
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通过PC端控制液晶显示器,解压无需密码
通过PC端控制液晶显示器,解压无需密码-control through a PC-inch LCD monitor, without extracting passwords
- 2023-02-11 05:10:03下载
- 积分:1
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多谢,大本营的对我的帮助。这是一个串口调试程序,供大家参考。
多谢,大本营的对我的帮助。这是一个串口调试程序,供大家参考。-Thank you, the stronghold of my help. This is a serial debugger, for your reference.
- 2022-09-24 01:05:03下载
- 积分:1