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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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VC编程实现的串口通信,界面简洁,实现基本的串口通信的作用。...
VC编程实现的串口通信,界面简洁,实现基本的串口通信的作用。-VC programming of serial communication, the interface simple to achieve a basic serial communication role.
- 2022-06-14 06:57:05下载
- 积分:1
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通过串口把BMP文件串到FLASH中的程序,包含界面
通过串口把BMP文件串到FLASH中的程序,包含界面-put through a BMP file to Flash series of procedures, including interface
- 2022-06-21 14:56:17下载
- 积分:1
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本程序是i2c总线读写一个字节的程序。在写过程序中,不一定非要检测i2c的应答位,可以直接延时过去就行,但是在读过程中必须给应答信号,读完发停止位,一定确认所发...
本程序是i2c总线读写一个字节的程序。在写过程序中,不一定非要检测i2c的应答位,可以直接延时过去就行,但是在读过程中必须给应答信号,读完发停止位,一定确认所发的信号都发上了。否则在连续地址读的过程中可能不会出错,但是在随机度过程中就会出错,我的程序就是在给停止信号时没有给上,24cxx一直在输出数据,结果读出错。找着问题后我的程序只加入了一条命令便完全正常。-i2c bus read and write a byte procedures. The written procedure, not necessarily require the detection i2c-response, and can directly past trip delay, but the process must be read to the response signal, stopped at reading, we recognize the signals are on the fat. Otherwise, the address read for the course could not go wrong, but the randomness of the process would be a mistake, I was in the process to stop for no signal, 24cxx in output data, read errors. I discovered the problem after the procedure just joined the order of a completely normal.
- 2022-02-02 10:09:18下载
- 积分:1
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Through rs232, send a message to the other end, you can open the port, check to...
通过rs232,发送一条消息到另一端,可以打开端口,检查打开后才输入消息。
- 2022-04-26 10:41:02下载
- 积分:1
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实现串口通讯,一个用word写的方法,上传供大家共同学习
实现串口通讯,一个用word写的方法,上传供大家共同学习-Realize serial communication, a way to use word to write, upload for everyone to learn together
- 2022-11-03 12:25:08下载
- 积分:1
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C++ Builder 6 Delphi 7的串口控制网站的www.cppfans COM提供…
C++ Builder 6 Delphi 7系列控件网站提供的www.cppfans.com很容易使用的内涵
- 2022-04-18 20:53:42下载
- 积分:1
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一个迷你的com通讯程序,是用win32asm写的。功能全面
一个迷你的com通讯程序,是用win32asm写的。功能全面-a program made by win32asm
- 2022-12-23 01:40:03下载
- 积分:1
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Visual Basic serial communication program design mscomm.vbx directly Communicati...
Visual Basic串口通信程序设计
mscomm.vbx通信控件可直接从vb的toolbox中加入窗体form,即可用其进行通信-Visual Basic serial communication program design mscomm.vbx directly Communication Control Vb from the toolbox window into form, can be used for communication
- 2023-01-27 02:05:04下载
- 积分:1
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蓝牙核心串行协议源文件
bluetooth core serial protocol source file
- 2022-01-25 15:36:08下载
- 积分:1