Re: luars232 for COM10-255

["David Collier" <myshkin@...>]

A summary reply to all responders.

Thanks for the VC++ link. Looks like I may avoid needing it today, but
useful to have it.

I can confirm that adding \\.\ on the front of the port number does
indeed allow me to access the full range of numbers. 
I have to put an interesting number of backslashes into LuaPP to get one
to come out in the device name, but it worked in the end.
Thank you for that - I should have found it in my googling, but somehow
missed it.

I have found a program called com_name_arbiter_setter at

http://www.uwe-sieber.de/misc_tools_e.html

which can be run with a command line parameter to unjam the COM port
setting for all devices not currently plugged in.

I _THINK_ what I'm going to do is to keep plugging in new boards, and
communicate with them on the highest COM port number that I can open,
then at the end of the batch run that proggie to clear down for the next
batch.

I still haven't found any s/w that will return dangling handles to open
COM ports, which I think would fix my reboot issue.


> *From:* "David Collier" <myshkin@cix.co.uk>
> *To:* <lua-l@lists.lua.org>
> *Date:* Tue, 23 Oct 2012 10:48 +0100 (BST)
> 
> This is really for Ynezz, but others may be interested.
> 
> I found that luars232 didn't support com ports above COM9.
> 
> I'm trying to production test a whole batch of 50 boards which 
> include a
> USB to RS485 interface, and each USB<->RS232 chip I connect to my 
> windoze
> test rig naturally occupies the next COM address nothing has ever 
> used.
> 
> I know the windows procedure for dragging that back to a fixed COM 
> number,
> but lovely as Windoze is, I find the port isn't usable on its new 
> address
> until I've rebooted, which is a huge overhead.
> 
> I thought of making the 'COM27' value a parameter to my program, 
> but then
> I find that the luars232 library only deals with up to COM9
> 
> Now I've found this page on the web which indicates that if someone
> recompiles something using VC++, the limit can be removed, but 
> truly I
> don't understand what is being discussed and I don't have a copy of 
> VC++.
> 
> http://ccgi.dougrice.plus.com/cgi-bin/wiki.pl?Serial-Lua
> 
> So could anyone please tell me:
> 
> O Off topic - I'm running XP - does anyone happen to know if you can
> renumber a COM port on any later Windoze and have it keep working 
> without
> a reboot? I could upgrade my OS if it overcame the issue.
> 
> O Can the luars232 and underlying DLL be updated "for everyone" or 
> does
> it have to be fixed user by user.
> 
> O If I've got to do it, could someone please set out the steps 
> involved
> one by one?
> 
> O How much does a copy of ruddy VC++ cost me?
> 
> Thanks for any suggestions
> 
> David
> 
>