[Oberon] FPGA - nRF24L01 connection

Jörg joerg.straube at iaeth.ch
Mon Apr 16 23:20:18 CEST 2018

Just one remark:
You used setRetries(50, 50) in your code. This does not what you think it does...

> Am 16.04.2018 um 18:51 schrieb Tomas Kral <thomas.kral at email.cz>:
> On Sun, 15 Apr 2018 07:52:05 +0300
> Jörg Straube <joerg.straube at iaeth.ch> wrote:
>> How do you measure „x% loss“? Currently, all your packets contain a
>> constant string. Please enter an increasing number in it and see how
>> many numbers you miss.
> Hi,
> I will improve my code on the above. 
> Today, I have a new observation. When I swap NRF modules between RPI
> and Oberon, I am getting absolutely no payloads across, this made me
> suspect one of the modules outside production tolerance, (now please do
> not laugh), I bought another pair and I am getting absolutely no pings
> either with these new modules in either socket.
> Best results now with the old pair, one that likes RPI, the other
> that does Oberon, and these `SCC.Mod' setting Wait = 5; SendTries = 15;
> As I experience that the carrier, if not lost, is picked in early
> number of tries.
> For the tests, the transmitter and receiver are some 15cm apart, that
> is the limit of my short USB cable I power Oberon with. I read
> somewhere that radio can operate at some 50 meters range.
> I realised I do not quite understand `SCC.SubSnd', the purpose
> of retransmit loop, as the NRF module does some retransmits on its
> own. Perhaps the loop just extends number of these default tries?
> Many thanks.
> -- 
> Tomas Kral <thomas.kral at email.cz>
> --
> Oberon at lists.inf.ethz.ch mailing list for ETH Oberon and related systems
> https://lists.inf.ethz.ch/mailman/listinfo/oberon

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