On 10/28/11 22:12, James wrote:
> diff -r d4e8bf5658ce util/femon/femon.c
> --- a/util/femon/femon.c Fri Oct 07 01:26:04 2011 +0530
> +++ b/util/femon/femon.c Fri Oct 28 18:52:12 2011 -0400
> @@ -16,6 +16,9 @@
> * You should have received a copy of the GNU General Public License
> * along with this program; if not, write to the Free Software
> * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
> + *
> + * James Lockie: Oct. 2011
> + * modified to add a switch (-2) to show signal/snr in dB
> */
>
>
> @@ -37,11 +40,16 @@
>
> #include <libdvbapi/dvbfe.h>
>
> +/* the s5h1409 delivers both fields in 0.1dB increments, while
> + * some demods expect signal to be 0-65535 and SNR to be in 1/256
> increments
Looks like thunderbird is being too helpful for us here -- by breaking
a long line where it shouldn't be broken. You can see if
<kernel source>/Documentation/email-clients.txt helps you any with that.
> +*/
> +
> #define FE_STATUS_PARAMS
> (DVBFE_INFO_LOCKSTATUS|DVBFE_INFO_SIGNAL_STRENGTH|DVBFE_INFO_BER|DVBFE_INFO_SNR|DVBFE_INFO_UNCORRECTED_BLOCKS)
>
> static char *usage_str =
> "\nusage: femon [options]\n"
> - " -H : human readable output\n"
> + " -H : human readable output: (signal: 0-65335, snr:
> 1/256 increments)\n"
> + " -2 : human readable output: (signal and snr in .1 dB
> increments)\n"
same problem as above.
> " -A : Acoustical mode. A sound indicates the signal
> quality.\n"
> " -r : If 'Acoustical mode' is active it tells the
> application\n"
> " is called remotely via ssh. The sound is heard on
> the 'real'\n"
> @@ -62,7 +70,7 @@ static void usage(void)
>
>
> static
> -int check_frontend (struct dvbfe_handle *fe, int human_readable,
> unsigned int count)
> +int check_frontend (struct dvbfe_handle *fe, int human_readable, int
> db_readable, unsigned int count)
and again.
> {
> struct dvbfe_info fe_info;
> unsigned int samples = 0;
> @@ -93,31 +101,32 @@ int check_frontend (struct dvbfe_handle
> fprintf(stderr, "Problem retrieving frontend information:
> %m\n");
> }
>
> + // print the status code
> + printf ("status %c%c%c%c%c | ",
> + fe_info.signal ? 'S' : ' ',
> + fe_info.carrier ? 'C' : ' ',
> + fe_info.viterbi ? 'V' : ' ',
> + fe_info.sync ? 'Y' : ' ',
> + fe_info.lock ? 'L' : ' ' );
>
> + if (db_readable) {
> + printf ("signal %3.0fdB | snr %3.0fdB",
> + (fe_info.signal_strength * 0.1),
> + (fe_info.snr * 0.1) );
> + } else if (human_readable) {
> + printf ("signal %3u%% | snr %3u%%",
> + (fe_info.signal_strength * 100) / 0xffff,
> + (fe_info.snr * 100) / 0xffff );
> + } else {
> + printf ("signal %04x | snr %04x",
> + fe_info.signal_strength,
> + fe_info.snr );
> + }
>
> - if (human_readable) {
> - printf ("status %c%c%c%c%c | signal %3u%% | snr
> %3u%% | ber %d | unc %d | ",
> - fe_info.signal ? 'S' : ' ',
> - fe_info.carrier ? 'C' : ' ',
> - fe_info.viterbi ? 'V' : ' ',
> - fe_info.sync ? 'Y' : ' ',
> - fe_info.lock ? 'L' : ' ',
> - (fe_info.signal_strength * 100) / 0xffff,
> - (fe_info.snr * 100) / 0xffff,
> - fe_info.ber,
> - fe_info.ucblocks);
> - } else {
> - printf ("status %c%c%c%c%c | signal %04x | snr %04x | ber
> %08x | unc %08x | ",
> - fe_info.signal ? 'S' : ' ',
> - fe_info.carrier ? 'C' : ' ',
> - fe_info.viterbi ? 'V' : ' ',
> - fe_info.sync ? 'Y' : ' ',
> - fe_info.lock ? 'L' : ' ',
> - fe_info.signal_strength,
> - fe_info.snr,
> - fe_info.ber,
> - fe_info.ucblocks);
> - }
> + /* always print ber and ucblocks */
> + printf (" | ber %08x | unc %08x | ",
> + fe_info.ber,
> + fe_info.ucblocks);
>
> if (fe_info.lock)
> printf("FE_HAS_LOCK");
> @@ -145,7 +154,7 @@ int check_frontend (struct dvbfe_handle
>
>
> static
> -int do_mon(unsigned int adapter, unsigned int frontend, int
> human_readable, unsigned int count)
> +int do_mon(unsigned int adapter, unsigned int frontend, int
> human_readable, int db_readable, unsigned int count)
and again.
> {
> int result;
> struct dvbfe_handle *fe;
> @@ -175,7 +184,7 @@ int do_mon(unsigned int adapter, unsigne
> }
> printf("FE: %s (%s)\n", fe_info.name, fe_type);
>
> - result = check_frontend (fe, human_readable, count);
> + result = check_frontend (fe, human_readable, db_readable, count);
>
> dvbfe_close(fe);
>
> @@ -186,9 +195,10 @@ int main(int argc, char *argv[])
> {
> unsigned int adapter = 0, frontend = 0, count = 0;
> int human_readable = 0;
> + int db_readable = 0;
> int opt;
>
> - while ((opt = getopt(argc, argv, "rAHa:f:c:")) != -1) {
> + while ((opt = getopt(argc, argv, "rAH2a:f:c:")) != -1) {
> switch (opt)
> {
> default:
> @@ -206,6 +216,9 @@ int main(int argc, char *argv[])
> case 'H':
> human_readable = 1;
> break;
> + case '2':
> + db_readable = 1;
> + break;
> case 'A':
> // Acoustical mode: we have to reduce the delay between
> // checks in order to hear nice sound
> @@ -218,7 +231,7 @@ int main(int argc, char *argv[])
> }
> }
>
> - do_mon(adapter, frontend, human_readable, count);
> + do_mon(adapter, frontend, human_readable, db_readable, count);
>
> return 0;
> }
>
> --
--
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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