[linux-dvb] ?: How can I properly tune my DVB-S card with the NAPI

[Varga Zsager Peter <jagger@sch.bme.hu>]

Hi,


I would like to set my SIEMENS DVB-S card for the channel VOX. My
satellit dish is pointing to HOTBIRD. The tunning parameter from
the .gvideorc file is the below:

Channel      : <Name>
Frequency    : <frequency> (unit depends on tuner)
CHBC         : <Color> <Hue> <Brightness> <Contrast> (numbers depend on your hardware)
NI           : <TV norm> <Input> (if norm=-1 then SAT is expected)
SAT          : <Polarization> (0 = vertical, 1 horizontal)
               <Signal Rate>
               <FEC> (0=1/2, 1=2/3, 2=3/4, 3=4/5, 4=5/6, 5=6/7 6=7/8, 7=8/9 8=Auto)
               <VPID> <APID> <LNB Nr.>
               <type> (Analog,DVBS,DVBT,DVBC)=(0,1,2,3)
               <dvbnum> (id of channel in DVB structure)

Channel      : VOX
Frequency    : 11054
CBHC         : 255 0 0 255
NI           : -1 0
SAT          : 1 27500 4 500 501 1 1 0


My releated code to this is:


.
.
.
// sec
    if ((secDevFd = open(secDev, O_RDWR)) < 0) {
        perror("Sec device open O_RDWR error");
        return -1;
    }
    else { fprintf(stderr, "%s sec device opened for O_RDWR, secDevFd = %d \n", secDev, secDevFd); }

    mySecCommand.type                   = 0;
    mySecCommand.u.diseqc.addr          = 0x10;
    mySecCommand.u.diseqc.cmd           = 0x38;
    mySecCommand.u.diseqc.numParams     = 1;
    mySecCommand.u.diseqc.params[0]     = 0xf0;

    mySecCmdSequence.voltage            = SEC_VOLTAGE_18; // 14V/18V (V=0/H=1)
    mySecCmdSequence.miniCommand                = SEC_MINI_NONE;
    mySecCmdSequence.continuousTone     = SEC_TONE_OFF; // 22KHz (ttk) (freq < 118000UL) ? 0 : 1
    mySecCmdSequence.numCommands                = 1;
    mySecCmdSequence.commands           = &mySecCommand;
    if (ioctl(secDevFd, SEC_SEND_SEQUENCE, &mySecCmdSequence) < 0) {
        perror("SEC_SEND_SEQUENCE error");
        return -1;
    }
    else { fprintf(stderr, "SEC_SEND_SEQUENCE set \n"); }

// frontend
    if ((frontendDevFd = open(frontendDev, O_RDWR)) < 0) {
        perror("Frontend device open O_RDWR error");
        return -1;
    }
    else { fprintf(stderr, "%s frontend device opened for O_RDWR, frontendDevFd = %d \n", frontendDev, frontendDevFd); }

    wantedFreq  = 11054;
    wantedSr    = 27500;

    myQpskParameters.iFrequency     = (wantedFreq < 11800UL) ? ((wantedFreq - 9750UL) * 1000000UL) : ((wantedFreq - 10600UL) * 1000000UL);
    myQpskParameters.SymbolRate     = wantedSr * 1000;
    myQpskParameters.FEC_inner      = 4;
    if (ioctl(frontendDevFd, QPSK_TUNE, &myQpskParameters) < 0) {
        perror("QPSK_TUNE error");
        return -1;
    }
    else { fprintf(stderr, "QPSK_TUNE set \n"); }

// demuxVideo
    if ((demuxVideoDevFd = open(demuxDev, O_RDWR)) < 0) {
        perror("Demux (VIDEO) device open O_RDWR error");
        return -1;
    }
    else { fprintf(stderr, "%s demux (VIDEO) device opened for O_RDWR, demuxVideoDevFd = %d \n", demuxDev, demuxVideoDevFd); }

    myVideoDmxPesFilterParams.pid            = 0x1f4; // 500
    myVideoDmxPesFilterParams.input          = DMX_IN_FRONTEND;
    myVideoDmxPesFilterParams.output         = DMX_OUT_TS_TAP;
    myVideoDmxPesFilterParams.pesType        = DMX_PES_VIDEO;
    myVideoDmxPesFilterParams.flags          = DMX_IMMEDIATE_START;
    if (ioctl(demuxVideoDevFd, DMX_SET_PES_FILTER, &myVideoDmxPesFilterParams) < 0) {
        perror("DMX_SET_PES_FILTER (VIDEO) error");
        return -1;
    }
    else { fprintf(stderr, "DMX_SET_PES_FILTER (VIDEO) set \n"); }

// demuxAudio
    if ((demuxAudioDevFd = open(demuxDev, O_RDWR)) < 0) {
        perror("Demux (AUDIO) device open O_RDWR error");
        return -1;
    }
    else { fprintf(stderr, "%s demux (AUDIO) device opened for O_RDWR, demuxAudioDevFd = %d \n", demuxDev, demuxAudioDevFd); }

    myAudioDmxPesFilterParams.pid            = 0x1f5; // 501
    myAudioDmxPesFilterParams.input          = DMX_IN_FRONTEND;
    myAudioDmxPesFilterParams.output         = DMX_OUT_TS_TAP;
    myAudioDmxPesFilterParams.pesType        = DMX_PES_AUDIO;
    myAudioDmxPesFilterParams.flags          = DMX_IMMEDIATE_START;
    if (ioctl(demuxAudioDevFd, DMX_SET_PES_FILTER, &myAudioDmxPesFilterParams) < 0) {
        perror("DMX_SET_PES_FILTER (AUDIO) error");
        return -1;
    }
    else { fprintf(stderr, "DMX_SET_PES_FILTER (AUDIO) set \n"); }
.
.
.

I think, my tune for the DVB-S card isn't correct, because I can nothing
to read from the /dev/dvr device (and if I try with DMX_OUT_TAP than from
the /dev/demux device also). I haven't any idea what I should to set in
the secCommand stucture, I have copied it from the DVB/apps/test/test_dvr.c
file:

    mySecCommand.type                   = 0;
    mySecCommand.u.diseqc.addr          = 0x10;
    mySecCommand.u.diseqc.cmd           = 0x38;
    mySecCommand.u.diseqc.numParams     = 1;
    mySecCommand.u.diseqc.params[0]     = 0xf0;


Can anybody tell me the correct settings for this channel with the NAPI?
With the v4l API can I do it easier and it is functional properly:

.
.
.
    ioctl(videoDevFd, VIDIOCGFRONTEND, &myFrontend);

    wantedFreq  = 11054;
    wantedSr    = 27500;

    myFrontend.freq = (wantedFreq < 11800UL) ? ((wantedFreq - 9750UL) * 1000000UL) : ((wantedFreq - 10600UL) * 1000000UL);
    myFrontend.ttk = (wantedFreq < 11800UL) ? 0 : 1;
    myFrontend.diseqc = 1; // Diseqc input select (LNB number)
    myFrontend.srate = wantedSr * 1000;
    myFrontend.volt = 1; // 14/18V (V=0/H=1)
    myFrontend.video_pid = 500;
    myFrontend.audio_pid = 501;
    myFrontend.fec = 4; // 5/6
    myFrontend.AFC = 1;
    myFrontend.channel_flags = DVB_CHANNEL_FTA;

    ioctl(videoDevFd, VIDIOCSFRONTEND, &myFrontend)
.
.
.


thanks the help,
Peter


=-=-=-=-=-=-=-=-=-=-=-=-=
Peter Varga Zsager
Mobile: +36-30-2950386
E-mail: jagger@sch.bme.hu



--- 
Info:
To unsubscribe send a mail to listar@linuxtv.org with "unsubscribe linux-dvb" as subject.