?
Solved

RS485 PROGRAMMING USING vc++

Posted on 1999-01-06
7
Medium Priority
?
372 Views
Last Modified: 2013-12-03
Suppose i have a rs485 card thru which i would like to communicate with a machine, then how is it possible using VC++. Please give me an idea.I am a novice programmer.
0
Comment
Question by:vivek1
[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
  • 3
  • 2
  • 2
7 Comments
 
LVL 32

Expert Comment

by:jhance
ID: 1418145
If the RS485 card has provided a device driver interface, then the answer is yes.  Hopefully they've provided you documentation to it and you can use high level file functions to communicate with it.  

If not, then you are reduced to working with it at the hardware level.  Under Win9x, you must write and use a VxD to communicate with hardware devices.  Under NT, you must write a device driver.

Both of these options require the Windows DDK available from Microsoft in the MSDN Professional Level Subscription and above.  There are some 3rd party device driver tools as well that might speed up the process.  You might check out Vireo at www.viero.com
0
 

Author Comment

by:vivek1
ID: 1418146
Well what i require is that is it possible to access anInterrupt request using windows 95 system calls.If yes then how do i do it using VC++.
0
 
LVL 32

Expert Comment

by:jhance
ID: 1418147
Again, the answer is the same:

If the RS485 card has provided a device driver interface, then the answer is yes.  Hopefully they've provided you documentation to it and you can use high level file functions to communicate with it.  

If not, then you are reduced to working with it at the hardware level.  Under Win9x, you must write and use a VxD to communicate with hardware devices.  Under NT, you must write a device driver.

Both of these options require the Windows DDK available from Microsoft in the MSDN Professional Level Subscription and above.  There are some 3rd party device driver tools as well that might speed up the process.  You might check out Vireo at www.viero.com
0
Free Backup Tool for VMware and Hyper-V

Restore full virtual machine or individual guest files from 19 common file systems directly from the backup file. Schedule VM backups with PowerShell scripts. Set desired time, lean back and let the script to notify you via email upon completion.  

 
LVL 2

Expert Comment

by:ivi
ID: 1418148
I recommend you some third-party tools for access to the hardware from Win32:
- commercial WinRT (www.bluewatersystems.com)
- shareware TVicHW32 (www.entechtaiwan.com/tools.htm)
- commercial Driver::Agent (www.vireo.com)

0
 

Author Comment

by:vivek1
ID: 1418149
I need a solution and not consultancy on where to find it on the network
0
 
LVL 2

Expert Comment

by:ivi
ID: 1418150
That's great! :)
jhance gave you full solution! I've added - if you do not want to write your own VxD (or a KM-driver for NT) then you can use the drivers already written by other people. Maybe you want to get a solution how to write a drivers?
0
 
LVL 32

Accepted Solution

by:
jhance earned 800 total points
ID: 1418151
Again, the answer is the same:

If the RS485 card has provided a device driver interface, then the answer is yes.  Hopefully they've provided you documentation to it and you can use high level file functions to communicate with it.    

If not, then you are reduced to working with it at the hardware level.  Under Win9x, you must write and use a VxD to communicate with hardware devices.  Under NT, you must write a device driver.

Both of these options require the Windows DDK available from Microsoft in the MSDN Professional Level Subscription and above.  There are some 3rd party device driver tools as well that might speed up the process.  You might check out Vireo at www.viero.com
0

Featured Post

NFR key for Veeam Agent for Linux

Veeam is happy to provide a free NFR license for one year.  It allows for the non‑production use and valid for five workstations and two servers. Veeam Agent for Linux is a simple backup tool for your Linux installations, both on‑premises and in the public cloud.

Question has a verified solution.

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

This article shows how to make a Windows 7 gadget that accepts files dropped from the Windows Explorer.  It also illustrates how to give your gadget a non-rectangular shape and how to add some nifty visual effects to text displayed in a your gadget.…
This article shows how to make a Windows 7 gadget that extends its U/I with a flyout panel -- a window that pops out next to the gadget.  The example gadget shows several additional techniques:  How to automatically resize a gadget or flyout panel t…
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
This tutorial will teach you the special effect of super speed similar to the fictional character Wally West aka "The Flash" After Shake : http://www.videocopilot.net/presets/after_shake/ All lightning effects with instructions : http://www.mediaf…

777 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