Well, it turns out that pthreads are dead easy to use. I now have a
fully working Modbus component that can access any number of devices on
any number of serial or Ethernet channels. It works much faster than
ClassicLadder's Modbus implementation with a tiny fraction of the CPU
load. It is working great with my Modbus front panel with 55 inputs
(buttons), 55 coils(LEDs) and 4 registers(pots). I'll post the code and
docs here once I have tested it a bit more and done a bit of tidying up.
Due to the number of possible settings it uses a config file instead of
command line arguments. The config can either be a standalone file or
part of the main ini file.
Les
On 22/04/11 15:54, Les Newell wrote:
> Hi Jeff,
>
>> loadusr -Wn copy1 mymodule name1=copy1
>> loadusr -Wn copy2 mymodule name2=copy2
> Hmm, that is starting to look a little ugly and doesn't really fit in
> with the way most modules are loaded. Perhaps I would be better off
> keeping it all in one multi-threaded module. I'll have a look and see
> how difficult Linux threads are...
>
>> int main(int argc, char **argv) {
>> char *name = "mymodule"
>> ... parse argv and find any name= and point the variable 'name' at it
>> ..
>> comp_id = hal_init(name);
>> ...
>> }
> Yes, I already do command line parsing in my single-threaded version of
> the module.
>
> Thanks,
> Les
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