No luck unfortunately. Would be interested if you make any progress Thanks, M
On Sat, Dec 20, 2014 at 10:16 AM, Mathy Vanhoef <vanho...@gmail.com> wrote: > Hi Mahaveer, > > Have you been able to get something working? > > Thanks, > Mathy > > On Fri, Jun 27, 2014 at 8:40 AM, mahaveer gupta <mgupta1...@gmail.com> > wrote: > >> Hi Adrian, >> >> A gentle reminder :) >> >> Thanks >> >> >> On Tue, Jun 24, 2014 at 12:54 PM, mahaveer gupta <mgupta1...@gmail.com> >> wrote: >> >>> Great! Thanks >>> >>> >>> On Tue, Jun 24, 2014 at 11:30 AM, Adrian Chadd <adr...@freebsd.org> >>> wrote: >>> >>>> Hi! >>>> >>>> Absolutely. I'll see if I can find the register. >>>> >>>> >>>> -a >>>> >>>> >>>> On 23 June 2014 22:34, mahaveer gupta <mgupta1...@gmail.com> wrote: >>>> > Hi Adrian, >>>> > >>>> > I was referring to the Scrambler module in the 802.11 protocol stack- >>>> > http://standards.ieee.org/getieee802/download/802.11-2007.pdf >>>> > (Section 17.3.5.4) >>>> > >>>> > At a high level, the data bits from the mac layer are XORed with a >>>> random >>>> > sequence before coding with a convolutional code. At the receiver, the >>>> > decoded output is XORed with the same sequence to recover the actual >>>> data >>>> > bits (descrambling). I think scrambling helps in randomizing the data, >>>> > especially if it has long sequence of 0s and 1s >>>> > >>>> > However, the XOR sequence used to scramble is chosen randomly based >>>> on a >>>> > seed. I was trying to fix the random seed so that a fixed sequence is >>>> > choosen for scrambling. Basically, I am trying to make the card >>>> transmit a >>>> > fixed (known) sequence of symbols at the physical layer for an >>>> experiment. >>>> > However, the random scrambling seed is making the same data bits to >>>> map to >>>> > different PHY symbols. >>>> > >>>> > Hope this helps, please let me know if you have a question >>>> > >>>> > Thanks, >>>> > M >>>> > >>>> > >>>> > On Sun, Jun 22, 2014 at 11:18 PM, Adrian Chadd <adr...@freebsd.org> >>>> wrote: >>>> >> >>>> >> Hi, >>>> >> >>>> >> Would you mind describing in more detail what it is that you're >>>> after? >>>> >> >>>> >> >>>> >> -a >>>> >> >>>> >> >>>> >> On 22 June 2014 14:11, mahaveer gupta <mgupta1...@gmail.com> wrote: >>>> >> > Hello, >>>> >> > >>>> >> > Does anyone know how to fix the scrambler seed to a specific value >>>> in >>>> >> > ath9k. >>>> >> > >>>> >> > I could find a relevant code for ath5k in ath5k/reg.h, the >>>> following >>>> >> > lines >>>> >> > seem to control the scramble seed. >>>> >> > >>>> >> > #define AR5K_DIAG_SW_EN_SCRAM_SEED_5210 0x00000400 /* Enable >>>> fixed >>>> >> > scrambler seed */ >>>> >> > #define AR5K_DIAG_SW_EN_SCRAM_SEED_5211 0x00000200 >>>> >> > #define AR5K_DIAG_SW_EN_SCRAM_SEED (ah->ah_version == >>>> AR5K_AR5210 ? >>>> >> > \ >>>> >> > >>>> AR5K_DIAG_SW_EN_SCRAM_SEED_5210 >>>> >> > : >>>> >> > AR5K_DIAG_SW_EN_SCRAM_SEED_5211) >>>> >> > #define AR5K_DIAG_SW_ECO_ENABLE 0x00000400 /* [5211+] >>>> */ >>>> >> > #define AR5K_DIAG_SW_SCVRAM_SEED 0x0003f800 /* [5210] >>>> */ >>>> >> > #define AR5K_DIAG_SW_SCRAM_SEED_M 0x0001fc00 /* >>>> Scrambler >>>> >> > seed >>>> >> > mask */ >>>> >> > >>>> >> > Could someone please confirm if similar option is available with >>>> ath9k >>>> >> > also? >>>> >> > I couldn't find one >>>> >> > >>>> >> > -- >>>> >> > Thanks, >>>> >> > M >>>> >> > >>>> >> > _______________________________________________ >>>> >> > ath9k-devel mailing list >>>> >> > ath9k-devel@lists.ath9k.org >>>> >> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel >>>> >> > >>>> > >>>> > >>>> > >>>> > >>>> > -- >>>> > Thanks, >>>> > M >>>> >>> >>> >>> >>> -- >>> Thanks, >>> M >>> >> >> >> >> -- >> Thanks, >> M >> >> _______________________________________________ >> ath9k-devel mailing list >> ath9k-devel@lists.ath9k.org >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel >> >> > -- Thanks, M
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