>
> It's pretty easy to make a VFD/Modbus component for a new VFD, or other
> Modbus device. I have some notes here:
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?New_File_From_Vfs11
>
> I seem to recall that some further work had been done when libmodbus3
> came out, but I don't recall any details.
>
> Rather than try to make a generic VFD/Modbus driver, it's easy enough to
> just edit an existing file as needed. For those that don't know how to
> edit C files, it may be best to announce to the list the needed Modbus
> device and offer sufficient motivation. I believe there is an
> appropriate place to collect existing Modbus drivers on the Wiki.
>
> One issue that I vaguely recall, so far, Modbus drivers are either
> written to be compiled on their own with a corresponding Makefile, or
> the driver is meant to be placed in the LinuxCNC source with a Makefile
> that follows the source tree (?). If this is correct, it would be nice
> to resolve which (or both?) method should be used and document it.
>
> --
> Kirk Wallace
Well easy is a relative term !
I wouldn't call editing a c file and adding to the MAKE file easy for a new
comer.
It also then becomes a completely custom system, one that updates will break.
but maybe comp can compile C file too...
My current idea would be to create a python extension module for the modbus C
file.
Then a generic modbus program in python or you could make a specific one.
Python seems more appropriate then C for this (lowers the barrier) and if the
generic modbus program works out you wouldn't have to program at all.
It would ultimately have a GUI to configure it.
I'm curious why you advocate editing a specific driver to configuring a general
one.
IIRC libmodbus3 's licence is incompatible with linuxcnc.
Chris M
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