Solved

MSWIN Serial Port Driver

Posted on 1997-03-25
2
254 Views
Last Modified: 2010-04-10
We want to use a serial port in a "real time" application under Win3.1x and Win95.
We need advice to use COM.DRV or another driver which will allow us:
a) to work at 115kbps or 230kbps.
b) to get, together with a character received, the status of several control signals (ie CD, CTS etc...) DURING this character reception.
without a polling loop.

Thanks & regards
Claude Roizin
0
Comment
Question by:klode
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
2 Comments
 

Accepted Solution

by:
clausc earned 200 total points
ID: 1162443
Pacific Commware had a series of parallel port hardware including drivers for Win95 which allow speeds up to 921kbps. They provide Win95 driver that let your application set the baudrate to more than just 115.2kbps so this might be a solution for your a) question.
Regarding b): I think you have two options:
1. You could write your own serial driver. Not pretty, but not that hard to do if you have MSDN Library including the DDK. Microsofts Device Driver Kit includes the sample for the vcd.vxd and also the serial.vxd port driver. Using these you could do it or
2. Bypass the device driver by inserting your own VXD only for this purpose (might be easier because you don't need to watch out for all the problems related to a full-featured serial driver).

Hope this helps,
Claus
0
 

Expert Comment

by:clausc
ID: 1162444
Yes I could, I did write a serial port driver before for one client, so I could change it to support your needs. But this also poses one small problem: I can't deliver competitors with the same code (would be unprofessional, would'nt it?), so I need to know some more details about your application.
From what you wrote in your question I currently see no conflict.
Please contact me via email: ClausChristensen@msn.com.

Thanks,
- Claus

0

Featured Post

[Live Webinar] The Cloud Skills Gap

As Cloud technologies come of age, business leaders grapple with the impact it has on their team's skills and the gap associated with the use of a cloud platform.

Join experts from 451 Research and Concerto Cloud Services on July 27th where we will examine fact and fiction.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

  Included as part of the C++ Standard Template Library (STL) is a collection of generic containers. Each of these containers serves a different purpose and has different pros and cons. It is often difficult to decide which container to use and …
Many modern programming languages support the concept of a property -- a class member that combines characteristics of both a data member and a method.  These are sometimes called "smart fields" because you can add logic that is applied automaticall…
The goal of the video will be to teach the user the concept of local variables and scope. An example of a locally defined variable will be given as well as an explanation of what scope is in C++. The local variable and concept of scope will be relat…
The viewer will learn additional member functions of the vector class. Specifically, the capacity and swap member functions will be introduced.

626 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question