I'm not sure I'm afraid - that code is old, so might no longer be fully compatible with the dvb3 bindings that kamaelia now uses.
My suggestion would be to take the source code for DVB_Multiplex: http://code.google.com/p/kamaelia/source/browse/trunk/Code/Python/Kamaelia/Kamaelia.Device/DVB/Core.py ... and take your own copy to modify. Then locate the "tune_dvb" function and add to it the code needed to set the SEC voltage. See if it works. regards Matt On Sat, 21 Nov 2009 00:10:26 -0000, luca72 <lucabe...@libero.it> wrote: > hello i have make this: > > import dvb3 > scheda = dvb3.frontend.Frontend(0) > parametri = dvb3.frontend.QPSKParameters(frequency=11977, > inversion=2 , symbol_rate=27500, fec_inner=9) > demuxer = dvb3.dmx.Demux(0, blocking = 0) > pid = 1296 > demuxer.set_pes_filter( pid, > dvb3.dmx.DMX_IN_FRONTEND, > dvb3.dmx.DMX_OUT_TS_TAP, > dvb3.dmx.DMX_PES_OTHER, > dvb3.dmx.DMX_IMMEDIATE_START ) > > pol = 'v' > if pol =='v': > scheda.set_voltage(13) > > segnal = scheda.read_signal_strength() > print 'segnale = ' + str(segnal) > status = scheda.read_status() > print 'status = ' + str(status) > ber_= scheda.read_ber() > print 'ber = ' +str(ber_) > snr_ = scheda.read_snr() > print'snr = ' + str(snr_) > front_end = scheda.get_frontend() > print'frontend = ' +str(front_end) > > I have no error i have the ber = 0 > the signal that go from 0 to max 2500 > > Do you have any idea. > Idon' find the commandfor close the dvb3.frontend.Frontend(0) can you > hel me? > > Thanks > > Luca > > On 20 Nov, 11:17, "Matt Hammond" <matt.hamm...@rd.bbc.co.uk> wrote: >> Maybe better to look at a layer closer to the python. See: >> >> >> http://code.google.com/p/kamaelia/source/browse/trunk/Code/Python/Bin... >> >> Teh QPSKParameters class is filled from the 'frequency' parameter and >> the 'feparams' you provide. You therefore need to specify: >> >> inversion >> symbol_rate >> fec_inner >> >> in the feparams dict you are creating. >> >> Ignore my earlier mesasge where I incorrectly assumed you were trying >> to tune to the BBC freesat service! Use the symbol rate and frequency >> that you have been using. Hein suggests the FEC you need is 3/4. You >> can probably set inversion to auto - or at worst just try all three >> options. >> >> The old code Michael attached to an earlier email seems to indicate >> that to set the polarisation, other stuff needs doing - to do with SEC >> voltages (I've no idea what they are). You could try taking you own >> copy of the DVB_Multiplex.py and adding the code to set the >> polarisation? >> >> Matt >> >> >> >> On Fri, 20 Nov 2009 10:00:24 -0000, luca72 <lucabe...@libero.it> wrote: >> > Thanks >> > I try to explain what i need to do using python. >> >> > The base data are: >> > DVB-S >> > Frequency 11977 >> > pid 1296 Sky Italy ECM pid >> > Polarization Horizontal >> > symbol rate 27500 >> >> > If i understand right at first i have to setup the front end is it >> > correct? >> > Locking dvb-3 api for dvb-s frontend i have the follow params: >> >> > struct dvb_frontend_parameters { >> > uint32_t frequency; /* (absolute) frequency in Hz for >> > QAM/OFDM */ >> > /* intermediate frequency in kHz for >> > QPSK */ >> > fe_spectral_inversion_t inversion; >> > union { >> > struct dvb_qpsk_parameters qpsk; >> > struct dvb_qam_parameters qam; >> > struct dvb_ofdm_parameters ofdm; >> > } u; >> > }; >> >> > For satellite QPSK frontends you have to use the QPSKParameters member >> > defined by >> >> > struct dvb_qpsk_parameters { >> > uint32_t symbol_rate; /* symbol rate in Symbols per >> > second */ >> > fe_code_rate_t fec_inner; /* forward error correction (see >> > above) */ >> > }; >> >> > freq = 119.770000 >> > feparams = {"symbol_rate" : 27500, >> > } >> >> > I stop just here i heve made no more code because i have the error, >> > so i don't continue. >> >> > Now my idea is ,today when i'm at home i write this small script and i >> > see the output and the i post here so we can have a new idea. >> >> > #include <linux/dvb/frontend.h> >> >> > struct dvb_frontend_info info; >> > int fd; >> >> > if ((fd = open ("/dev/dvb/adapter0/frontend0", O_RDWR)) < 0) { >> > perror ("open failed"); >> > return -1; >> > } >> >> > ioctl (fd, FE_GET_INFO, &info); >> >> > Regards >> >> > Luca >> >> > On 20 Nov, 10:36, Michael Sparks <spark...@gmail.com> wrote: >> >> Hi Luca, >> >> >> On Friday 20 November 2009 07:39:12 luca72 wrote: >> >> >> > now i can't test it >> >> >> > Many thanks i will inform you. >> >> > PS:I think that i'm your nightmare (sorry) >> >> >> No, not nightmare. Someone testing current code in a scenario we >> >> haven't tried >> >> since that code was written is actually a dream scenario. What is >> >> making it >> >> hard to help is not posting a copy of the actual code you're running. >> >> >> Fragments are good, and you have the context of the fragments, so >> they >> make >> >> sense to you. However, simply posting this by itself... >> >> >> from Kamaelia.Device.DVB.Core import DVB_Multiplex >> >> from Kamaelia.Chassis.Pipeline import Pipeline >> >> from Kamaelia.File.Writing import SimpleFileWriter >> >> >> import dvb3 >> >> >> freq = 119.770000 >> >> feparams = {"symbol_rate" : 27500, >> >> } >> >> >> (for example - some your mail at 13:41:15 -0800 (PST) ) >> >> >> ... doesn't give me the full picture. >> >> >> When you then post this: >> >> and i get the following error >> >> >> The file frontend.pyx could not be opened. >> >> ... >> >> and after i gat : >> >> The debugged program raised the exception unhandled IOError >> >> "(22, 'Invalid argument')" >> >> File: frontend.pyx, Line: 364 >> >> >> These two errors look contradictory, which is confusing. >> >> >> I'm explaining this because taking the time to report what you're >> >> trying, and >> >> the results you're seeing is fantastic feedback, and I suspect >> looking >> at the >> >> original early code that we may need to change some code with regard >> to >> >> configuring the front end, but until I see the full file you're >> >> *currently* >> >> editting and the *current* sourcefile, I have no chance of >> >> reconstructing >> >> exactly what's happening. >> >> >> In order to allow me to help you, I simply need that information. >> >> >> Once again, regarding this: >> >> >> > PS:I think that i'm your nightmare (sorry) >> >> >> Please let me put your mind at rest - someone (anyone) taking the >> time >> to >> >> report back and try using code that hasn't been tested in the >> scenario >> you're >> >> using it, is not a nightmare, it's closer to a dream scenario - >> since >> it's >> >> useful feedback. >> >> >> At present I think, that the current code is not configuring the >> >> satellite >> >> frontend before passing in the fe.params. It looks like with DVB-T & >> -C >> you >> >> can more or less "just use it", whereas with DVB-S the setting of >> >> horizontal >> >> matters. This quite possibly requires a change to our code as well >> as >> yours, >> >> hence me asking for information which you may feel repetitious, >> however >> what >> >> I'm simply doing is trying to see precisely what's changing in the >> >> system as >> >> a whole :-) >> >> >> Thanks for persevering! :-) >> >> >> Regards, >> >> >> Michael. >> >> >> --http://yeoldeclue.com/bloghttp://twitter.com/kamaelianhttp://www.kama... >> >> > -- >> >> > You received this message because you are subscribed to the Google > >> Groups "kamaelia" group. >> > To post to this group, send email to kamae...@googlegroups.com. >> > To unsubscribe from this group, send email to > >> kamaelia+unsubscr...@googlegroups.com. >> > For more options, visit this group at >> >http://groups.google.com/group/kamaelia?hl=. >> >> -- >> | Matt Hammond >> | Research Engineer, FM&T, BBC, Kingswood Warren, Tadworth, Surrey, UK >> |http://www.bbc.co.uk/rd/ -- | Matt Hammond | Research Engineer, FM&T, BBC, Kingswood Warren, Tadworth, Surrey, UK | http://www.bbc.co.uk/rd/ -- You received this message because you are subscribed to the Google Groups "kamaelia" group. 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