On 11 Feb If something dies in years to come, you will have to open up the whole can of worms again. At least NT seems to have a timer interrupt every 10 ms or every 15, ms with multiprocessor kernels , so the time between the checks could be this long, corresponding to more than character times at k2. Such busy looping might be acceptable in MS-DOS type single thread systems but not in multitasking operating systems. On 12 Feb Has anyone seen this before? Once the last character has started to be transmitted, there is no need to request for permission for more characters and the RTS can be dropped at any convenient time, even during the transmission of the last character.

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Apr 18, 8. The main problem is that I am dealing with serial devices that continuously transmit data.

Apr 17, 5. Whilst being a fairly good device, I still have found a few problems which others may have experienced. Apr 16, 1.

Create free account Forgot password? Apr 19, 9. Its always a potential problem. Apr 17, 6. Usb to driver problem.


Is there a recommended USB to serial (DB9) converter lead for C-Bus?

When “0” Space is transmitted, the RS transmitter is also enabled driving the line actively to the “0” “dominant” state. On Wed, 11 Feb It seems that once the buffer is full, the com port cannot be opened. Reply Start a New Thread.

Actaully I have never done any windows programming, but the windows programmer working on my project dosen’t know anything about hardware, so I would like to dontornics out these hardware problems if they are going to be an issue. Other possibilities would be RS and RS The Embedded Systems Experts http: A less reliable method which works surprisingly well on short distances is to run it in a similar way as the CAN bus was originally used with RS drivers before dedicated CAN drivers were available.

I did note some info on the FTDI site that may be useful, but have not really looked into it a great deal. Ksb the cards are hardware compatible, the standard Windows driver works well.

RS or USB to RS| page 3

I am also guessing that the supplied driver does not retrieve that data if it is not requested ub an application. It’s not that simple, you can’t do full-duplex on RS I think the use of a circular buffer in the driver may solve the problem.


You don’t have control, and so you are subject to a risk – and risk management is engineering. The serial card is donfronics solid under all versions of Windows. This works quite well for short lines a few meters at moderate speeds. Apr 17, 4.

Is there a recommended USB to serial (DB9) converter lead for C-Bus?

Previous 1 2 3 4 Next. If so is there an easy work around?

Apr 16, 2. As Paul K wrote below: If something dies in years to come, you will have to open up the whole can of worms again.


What about using Can? You’ll need to choose a username for the site, which only take a couple of moments here. USB on Windows swrial still not quite solid.