增强串行通信，拒绝COM端口，并显示错误“打开：拒绝访问”

Question

I have a simple program, the Boost library, built and linked etc.

When I run the code below, I get an error saying " open: access is denied". I get that is may well mean the port is already open and therefore not available. however, I can access the COM port very easily in both C# and another C++ program, however I have no idea how implement that in Boost and my search hasn't been very productive.

void main()
{
try 
{       
    SerialSimple ss("COM12", 115200);       
    //ss.writeString("hi");
}
catch (exception& e)
{
    cout << "Standard exception: " << e.what() << endl;
}

_getch();
}

Cheers

Answer 1

问题可能是您试图为每个读取打开相同的端口，而没有在单独的实例（C＃或此程序）中将其关闭。

Answer 2

Solved it by disconnecting connection and then starting it again - am using Tera Term. Even though I have no idea how, it must have been opened by something else when I was attempting to write to it.