Create File in the Serial Port in VC++

Question

0.00/5 (No votes)

See more:

Hi,
Is it Possible to create more than one file in the COM Port at same time? Please tell me . how to solve this problem.?
Thanks in Advance..
Regards,
Lakshmi Narayanan.S

Posted 3-Aug-11 1:26am

naraayanan

Updated 3-Aug-11 1:28am

v3

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CPallini · Accepted Answer · 2011-08-03T01:44:00

If you mean: "Can I open the same serial port, via CreateFile more than once at time?" the answer is no.
The serial port is not a shared device and the documentation clearly states ("Communications Resources" at MSDN[^]):

When the process uses CreateFile to open a communications resource, it must specify certain values for the following parameters:

The fdwShareMode parameter must be zero, opening the resource for exclusive access.
The fdwCreate parameter must specify the OPEN_EXISTING flag.
The hTemplateFile parameter must be NULL.