串行端口（RS -232）使用C ++连接 [英] Serial Port (RS -232) Connection in C++

问题描述

我在C ++中使用16位编译器（我使用Turbo C ++ IDE）完成了串行端口RS-232连接。它包含头文件 bios.h ，其中包含从端口读取值的所有必需函数。现在我想使用C ++ 32位Mingw编译器从串口读取值。我使用Dev CPP作为我的IDE。这里我找不到 bios.h 。 Mingw中有没有特殊的头文件可用于此目的？我现在使用32位编译器，因为在我的大学项目，我得使用异常处理，我猜是在Turbo C不支持。请帮助我。

解决方案

请看这里：

• 适用于Linux和Windows的RS-232 ^1）


• Windows串行端口编程 ^2）


• 在Visual C ++中使用串行端口 ^3）


• Windows中的串行通讯

^1）您可以在Windows（包括MinGW）以及Linux。或者你只能使用代码作为例子。

^2）在Windows上使用串行端口

^3） >

这里有一些很简单的代码（没有任何错误处理或设置）：

  #include< windows.h> 
 
 / * ... * / 
 
 
 //打开串口
 HANDLE serialHandle; 
 
 serialHandle = CreateFile（\\\\.\\COM1，GENERIC_READ | GENERIC_WRITE，0，0，OPEN_EXISTING，FILE_ATTRIBUTE_NORMAL，0）; 
 
 //做一些基本设置
 DCB serialParams = {0}; 
 serialParams.DCBlength = sizeof（serialParams）; 
 
 GetCommState（serialHandle，& serialParams）; 
 serialParams.BaudRate = baudrate; 
 serialParams.ByteSize = byteSize; 
 serialParams.StopBits = stopBits; 
 serialParams.Parity = parity; 
 SetCommState（serialHandle，& serialParams）; 
 
 //设置超时
 COMMTIMEOUTS timeout = {0}; 
 timeout.ReadIntervalTimeout = 50; 
 timeout.ReadTotalTimeoutConstant = 50; 
 timeout.ReadTotalTimeoutMultiplier = 50; 
 timeout.WriteTotalTimeoutConstant = 50; 
 timeout.WriteTotalTimeoutMultiplier = 10; 
 
 SetCommTimeouts（serialHandle，& timeout）; 
  

现在可以使用 WriteFile（） ReadFile（）写入/读取字节。
不要忘记关闭你的连接：

  CloseHandle（serialHandle）; 
  

I have done serial port RS-232 connection in C++ using 16-bit compiler (I was using Turbo C++ IDE). It included header file bios.h which contain all the required functions for reading values from the port. Now I want to read value from serial port using C++ 32-bit Mingw compiler. I am using Dev CPP as my IDE. Here I could not find bios.h. Are there any special header files available for this purpose in Mingw? I am using 32-bit compiler now because in my college project I got to use Exception handling which I guess is not supported in Turbo C. Please help me out.

解决方案

Please take a look here:

• RS-232 for Linux and Windows ¹⁾
• Windows Serial Port Programming ²⁾
• Using the Serial Ports in Visual C++ ³⁾
• Serial Communication in Windows

¹⁾ You can use this with Windows (incl. MinGW) as well as Linux. Alternative you can only use the code as an example.

²⁾ Step-by-step tutorial how to use serial ports on windows

³⁾ You can use this literally on MinGW

Here's some very, very simple code (without any error handling or settings):

#include <windows.h>

/* ... */


// Open serial port
HANDLE serialHandle;

serialHandle = CreateFile("\\\\.\\COM1", GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);

// Do some basic settings
DCB serialParams = { 0 };
serialParams.DCBlength = sizeof(serialParams);

GetCommState(serialHandle, &serialParams);
serialParams.BaudRate = baudrate;
serialParams.ByteSize = byteSize;
serialParams.StopBits = stopBits;
serialParams.Parity = parity;
SetCommState(serialHandle, &serialParams);

// Set timeouts
COMMTIMEOUTS timeout = { 0 };
timeout.ReadIntervalTimeout = 50;
timeout.ReadTotalTimeoutConstant = 50;
timeout.ReadTotalTimeoutMultiplier = 50;
timeout.WriteTotalTimeoutConstant = 50;
timeout.WriteTotalTimeoutMultiplier = 10;

SetCommTimeouts(serialHandle, &timeout);

Now you can use WriteFile() / ReadFile() to write / read bytes. Don't forget to close your connection:

CloseHandle(serialHandle);

这篇关于串行端口（RS -232）使用C ++连接的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！