Re: listening to rs485 serial port on BL4S200

"S Sutikno [email protected] [rabbit-semi]" <[email protected]> Thu, 11 Aug 2016 10:38:57 +0700
Newsgroups gmane.comp.hardware.rabbit-semiconductor
Message-ID <CAPWahUcscWyVkcruaYp+-RPQKcyiO2Kcf6cGO4zj_ryrKrfH_g@mail.gmail.com>
Hi Mircea,

Can you share your code for modbus master.
Thanks.
Stev

On Thu, Aug 11, 2016 at 10:34 AM, [email protected] [rabbit-semi] <
[email protected]> wrote:

>
>
> Hi Tom,
>
> You are right: he will have to build a small FSM in the the interrupt
> handler and that can notify the non-interrupt code when a message is
> waiting. Presumably it will also discard all traffic that is not destined
> to that slave (each slave has an address) and issue notifications only for
> properly addressed messages.
>
> It has to be however a fairly smart piece of code as it must time
> intervals shorter than the standard Rabbit "tick" (1/1024 sec). A
> possibility is to use one of the Rabbit timers.
>
> Cheers,
> Mircea
> 
>