Solved

IOCTL_SERIAL_GET_COMMSTATUS not being sent

Posted on 2011-03-21
2
1,217 Views
Last Modified: 2013-12-17
I am writing code that bypasses an old legacy application that uses rs422 to control 4 led display boxes (all connnected)
I have been using "PortMon" to check the messages going out.

Currently I get the information appearing in the first box but not the other 3 even though the chars being sent are the same.

One difference I have seen using PortMon is that the IOCTL_SERIAL_GET_COMMSTATUS is not being sent via my code. The other IOCTL code looks right although this is all happing automatically rather than being anything I have written myself.

Does anyone know why this message is not being sent?

I am using a MOXA UPort 1150 usb to serial converter.
0
Comment
Question by:jetbet
  • 2
2 Comments
 

Accepted Solution

by:
jetbet earned 0 total points
ID: 35286316
As there are no responses I will close this question
0
 

Author Closing Comment

by:jetbet
ID: 35286319
No responses
0

Featured Post

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

Question has a verified solution.

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

The object model of .Net can be overwhelming at times – so overwhelming that quite trivial tasks often take hours of research. In this case, the task at hand was to populate the datagrid from SQL Server database in Visual Studio 2008 Windows applica…
This article describes relatively difficult and non-obvious issues that are likely to arise when creating COM class in Visual Studio and deploying it by professional MSI-authoring tools. It is assumed that the reader is already familiar with the cla…
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…

770 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