You should have a look at R0's RDS implementation...it sound very similar.
Moreover SI47xx can generate interrupt to the CPU ;)
Il giorno 08/dic/2012 07:59, "Ryan Hitchman" <hitchmanr_at_gmail.com> ha
scritto:

> I implemented RDS support for the Clip+ with SI4702 tuners.
>
> http://gerrit.rockbox.org/r/#/c/371/
>
> It polls every tick since I don't think the tuner can cause interrupts
> on the CPU.
>
> Any suggestions are appreciated.
>
> Thanks,
> Ryan
>
Received on 2012-12-08