1 files changed, 149 insertions, 0 deletions
diff --git a/util/szap/femon.c b/util/szap/femon.c
new file mode 100644
index 0000000..47e37a3
--- /dev/null
+++ b/util/szap/femon.c
@@ -0,0 +1,149 @@
+/* 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;
+}
+