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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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无线电台
无线数传电台串口通信C程序源码 电台型号为深圳友迅达公司的F201/B无线数传电台-wireless radio-C serial communications procedures source model of Shenzhen Radio Xun-da Friends of the F201/B wireless radio transceiver
- 2023-06-06 00:40:02下载
- 积分:1
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串口通信模块C代码,采用的是MICROCHIP公司的芯片
串口通信模块C代码,采用的是MICROCHIP公司的芯片-Serial Communication Module C code, the company is going before the chip
- 2022-02-22 11:24:37下载
- 积分:1
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DELPHI COMM控件 控件
DELPHI COMM控件 控件-DELPHI COMM Controls
- 2022-04-11 07:01:54下载
- 积分:1
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楼宇自控系统
希望对各位有用
楼宇自控系统
希望对各位有用-Building Automation System hope useful to you!
- 2022-10-15 10:10:03下载
- 积分:1
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imitate DCS system master station simulation software, the use of serial ports t...
模仿DCS系统主站的仿真软件,使用串口来收发数据。-imitate DCS system master station simulation software, the use of serial ports to send and receive data.
- 2022-03-23 01:58:42下载
- 积分:1
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一个毕业设计。用vc编写的一个简易测谎仪后台软件。用控件实现access数据库的链接,串口通信功能。...
一个毕业设计。用vc编写的一个简易测谎仪后台软件。用控件实现access数据库的链接,串口通信功能。-a graduate design. Vc used to prepare a summary of the background polygraph software. Controls used to achieve access to the database link, serial communications functions.
- 2023-03-17 05:35:03下载
- 积分:1
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: multithreading (Multi
说明:多线程 (Multi-Thread) RS232 串行口通讯构件 ( 1.51 版,附源码 )-: multithreading (Multi-Thread) RS232 serial port communication components (1.51 version, with source)
- 2022-11-02 21:55:03下载
- 积分:1
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这是一个GPS芯片的程序,能够读取各种GPS信号,采用串口通信,能够准确地定位地理信息...
这是一个GPS芯片的程序,能够读取各种GPS信号,采用串口通信,能够准确地定位地理信息-This is a GPS chip procedures, be able to read a variety of GPS signal, using serial communications, be able to accurately geo-positioning information
- 2022-04-22 14:06:54下载
- 积分:1
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串口程序。dos底下的编程源码,在TC环境下通过编译
串口程序。dos底下的编程源码,在TC环境下通过编译-Serial procedures. Dos programming source code under the TC environment through compiler
- 2022-01-25 14:15:18下载
- 积分:1