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Led Send Dawn
Led 发送晨曦-Led Send Dawn
- 2023-04-20 16:00:05下载
- 积分:1
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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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about serial communication programming, vc achieve! Multi
讲述串口通信编程,vc实现!多线程,异步方式。-about serial communication programming, vc achieve! Multi-threaded, asynchronous mode.
- 2022-10-11 10:10:03下载
- 积分:1
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CAN总线传输,示例代码,利用VC++编写
CAN总线传输,示例代码,利用VC++编写-CAN transmission, sample code, prepared VC
- 2022-02-03 11:46:47下载
- 积分:1
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dos under the serial programming source code can be used interruption
dos 下的串口编程源代码,可使用中断-dos under the serial programming source code can be used interruption
- 2023-02-19 11:40:03下载
- 积分:1
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achieve characters change! The need to run two machines, one Taiwan can the two...
实现字符转换!需要在两台机子上运行,也可以把一台机子的两个com口连在一块!这样就行了!还需要一个串口调试程序,网上可以下载到!-achieve characters change! The need to run two machines, one Taiwan can the two com loom even in a mouth! So OK! Need a serial debugging procedures can be downloaded to the Internet!
- 2022-06-14 08:27:41下载
- 积分:1
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dos下用TC2.0编译的几个串口例程
dos下用TC2.0编译的几个串口例程-a few examples in TC2.0 and Dos
- 2022-03-14 11:33:10下载
- 积分:1
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语音de 椅子 好学习大
语音de 椅子 好学习大-voice de studying the big chair
- 2022-01-26 03:15:23下载
- 积分:1
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A very usefull aplication for developers that creates a virtual serial ports for...
A very usefull aplication for developers that creates a virtual serial ports for debug purposesin order to see the data out or in.
- 2022-02-02 13:00:23下载
- 积分:1
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的问题.派尔高协议,控制左转右转时,出现问题.其他功能好用.我用DELPHI写的程序,在MOUSEDOWN中, str := chr($FF)+chr($01)...
的问题.派尔高协议,控制左转右转时,出现问题.其他功能好用.我用DELPHI写的程序,在MOUSEDOWN中, str := chr($FF)+chr($01)+chr($00)+chr($04)+chr($0F)+chr($00)+chr($14)
MSComm1.output := str
在CLICK事件中: str := chr($FF)+chr($01)+chr($00)+chr($00)+chr($00)+chr($00)+chr($01)
MSComm1.output := str
-Problem. Pelco agreement左转右转control when there are problems. Other features easy to use. DELPHI I used to write the procedures in the MouseDown, str: = chr ($ FF)+ Chr ($ 01)+ chr ($ 00)+ chr ($ 04)+ chr ($ 0F)+ chr ($ 00)+ chr ($ 14) MSComm1.output: = str in the CLICK event: str: = chr ($ FF)+ chr ($ 01)+ chr ($ 00)+ chr ($ 00)+ chr ($ 00)+ chr ($ 00)+ chr ($ 01) MSComm1.output: = str
- 2022-02-06 22:16:02下载
- 积分:1