Unfortunately, it doesn't. My problems are: a) In the case of my board, the hardware RNG is not part of the CPU but instead of the radio chip, which is accessed by the code in driver/at86rf2xx.
b) If I implement the hwrng interface in the at86rf2xx code, how does the samr21-xpro board learn of this? I couldn't find the code/configuration, where the at86rf2xx driver is attached to that board. c) Can I simply put the periph_hwrng feature in the board's Makefile.features if I know that that interface is implemented in some of its parts? Thanks a lot for your assistance, I just want to create a good patch for this, which can easily be integrated with the upstream code. cheers Mathias Am 21.02.2016 7:29 nachm. schrieb Peter Kietzmann <peter.kietzm...@haw-hamburg.de>: > > Hi Mathias, > > [1] is the interface that should be implemented by your driver. The driver is > CPU specific and should be placed in RIOT/cpu/*/periph/hwrng.c like e.g. here > [2]. > > Does that reduce your confusion or did I get you wrong :-) ? > > Best > Peter > > [1] https://github.com/RIOT-OS/RIOT/blob/master/drivers/include/periph/hwrng.h > [2] https://github.com/RIOT-OS/RIOT/blob/master/cpu/stm32f4/periph/hwrng.c > > Am 18.02.2016 um 13:46 schrieb Tausig Mathias: >> >> I am a bit confused, where to put that code. As far as I can tell, all >> current >> >> implementations of the hwrng functions are implemented on the cpu and not on >> the >> >> board level. While my rng is on the at86rf2xx chip, which is a driver. Can I >> put >> >> the feature in the driver? >> >> >> >> >> >> Am Mittwoch, den 17.02.2016, 17:22 +0100 schrieb Hauke Petersen: >> >>> Hi Mathias, >>> >>> >>> >>> I think the way to go here is to implement the >>> >>> `drivers/include/periph/hwrng.h` interface. For this I think it makes sense >>> to >>> >>> add a function that reads the random data from the radio to the at86rf2xx >>> >>> driver and call this function from the hwrng driver. >>> >>> >>> >>> Cheers, >>> >>> Hauke >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> On 16.02.2016 17:14, Tausig Mathias wrote: >>> >>>> Hy! >>>> >>>> >>>> >>>> I would like to use the hardware RNG from my samr1-xpro board. It should be >>>> >>>> available by reading out a certain register, according to the AT86RF233 >>>> >>>> documentation. >>>> >>>> My problem is, that I don't how to do that (I am pretty new to this stuff). >>>> >>>> Is there some documentation available for this kind of task, or could you >>>> >>>> point me in the right >>>> >>>> direction? >>>> >>>> >>>> >>>> cheers >>>> >>>> Mathias >>>> >>>> >>>> >>>> _______________________________________________ >>>> >>>> devel mailing list >>>> >>>> devel@riot-os.org >>>> >>>> https://lists.riot-os.org/mailman/listinfo/devel >>>> > > -- > > Peter Kietzmann > > > > Hamburg University of Applied Sciences > > Dept. Informatik, Internet Technologies Group > > Berliner Tor 7, 20099 Hamburg, Germany > > Fon: +49-40-42875-8426 > > Web: http://www.haw-hamburg.de/inet > _______________________________________________ devel mailing list devel@riot-os.org https://lists.riot-os.org/mailman/listinfo/devel
