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/* femon -- monitor frontend status
*
* Copyright (C) 2003 convergence GmbH
* Johannes Stezenbach <js@convergence.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/poll.h>
#include <fcntl.h>
#include <time.h>
#include <unistd.h>
#include <stdint.h>
#include <sys/time.h>
#include <linux/dvb/frontend.h>
#ifndef TRUE
#define TRUE (1==1)
#endif
#ifndef FALSE
#define FALSE (1==0)
#endif
#define FRONTENDDEVICE "/dev/dvb/adapter%d/frontend%d"
static char *usage_str =
"\nusage: femon [options]\n"
" -a number : use given adapter (default 0)\n"
" -f number : use given frontend (default 0)\n\n";
static void usage(void)
{
fprintf(stderr, usage_str);
exit(1);
}
static
int check_frontend (int fe_fd)
{
fe_status_t status;
uint16_t snr, signal;
uint32_t ber, uncorrected_blocks;
do {
ioctl(fe_fd, FE_READ_STATUS, &status);
ioctl(fe_fd, FE_READ_SIGNAL_STRENGTH, &signal);
ioctl(fe_fd, FE_READ_SNR, &snr);
ioctl(fe_fd, FE_READ_BER, &ber);
ioctl(fe_fd, FE_READ_UNCORRECTED_BLOCKS, &uncorrected_blocks);
printf ("status %02x | signal %04x | snr %04x | ber %08x | unc %08x | ",
status, signal, snr, ber, uncorrected_blocks);
if (status & FE_HAS_LOCK)
printf("FE_HAS_LOCK");
printf("\n");
usleep(1000000);
} while (1);
return 0;
}
static
int do_mon(unsigned int adapter, unsigned int frontend)
{
char fedev[128];
int fefd;
int result;
struct dvb_frontend_info fe_info;
snprintf(fedev, sizeof(fedev), FRONTENDDEVICE, adapter, frontend);
printf("using '%s'\n", fedev);
if ((fefd = open(fedev, O_RDONLY | O_NONBLOCK)) < 0) {
perror("opening frontend failed");
return FALSE;
}
result = ioctl(fefd, FE_GET_INFO, &fe_info);
if (result < 0) {
perror("ioctl FE_GET_INFO failed");
close(fefd);
return FALSE;
}
printf("FE: %s (%s)\n", fe_info.name, fe_info.type == FE_QPSK ? "SAT" :
fe_info.type == FE_QAM ? "CABLE": "TERRESTRIAL");
check_frontend (fefd);
close(fefd);
return result;
}
int main(int argc, char *argv[])
{
unsigned int adapter = 0, frontend = 0;
int opt;
while ((opt = getopt(argc, argv, "hlrn:a:f:d:")) != -1) {
switch (opt)
{
case '?':
case 'h':
default:
usage();
case 'a':
adapter = strtoul(optarg, NULL, 0);
break;
case 'f':
frontend = strtoul(optarg, NULL, 0);
}
}
do_mon(adapter, frontend);
return FALSE;
}
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