Read/Write Com Port :: C++
Author
Hi.
Is it easy to read from and write to the com port using C++? Is there a library for it?
Thanks,
Kuphryn
Most communications is OS specific
Sometimes you can open a file to com1, com2, etc...
But this doesn''t give you must control over how it''s opened etc...
Sometimes you can open a file to com1, com2, etc...
But this doesn''t give you must control over how it''s opened etc...
Author
Thanks.
What do you mean "open to?"
ifstream readCOM;
readCOM.open(com1, ios::in | ios::binary);
readCOM << ''test'';
Is that you are talking about?
Kuphryn
What do you mean "open to?"
ifstream readCOM;
readCOM.open(com1, ios::in | ios::binary);
readCOM << ''test'';
Is that you are talking about?
Kuphryn
more or less, I''m used to seeing fopen with that, but I guess the iostreams should kinda-sort work.
Author
C++ Style:
ifstream readCOM;
readCOM.open(com1, ios::in | ios::binary)
char *ptrStore;
try
{
ptrStore = new char[SIZE];
}
catch (bad_alloc error)
{
cerr << error.what();
exit(1);
}
readCOM.read(reinterpret_cast (ptrStore), SIZE);
How do you get the exact size of whatever you're reading from the COM port? It is not a measurable storage container.
Do I have to use an MFC class? What is the major difference if I were to use the ifstream and ofstream instead of an MFC class? I have no experience with MFC or windows programming.
Kuphryn
Edited by - kuphryn on December 27, 2001 1:12:10 PM
ifstream readCOM;
readCOM.open(com1, ios::in | ios::binary)
char *ptrStore;
try
{
ptrStore = new char[SIZE];
}
catch (bad_alloc error)
{
cerr << error.what();
exit(1);
}
readCOM.read(reinterpret_cast (ptrStore), SIZE);
How do you get the exact size of whatever you're reading from the COM port? It is not a measurable storage container.
Do I have to use an MFC class? What is the major difference if I were to use the ifstream and ofstream instead of an MFC class? I have no experience with MFC or windows programming.
Kuphryn
Edited by - kuphryn on December 27, 2001 1:12:10 PM
The biggest problem is that you have no control over the baud rate, secondly you can''t check the modem/line status bits.
You need to look into the Win32 communication functions
You need to look into the Win32 communication functions
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