Add optional debounce timer for red alarm

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@408 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 10 insertions, 2 deletions

diff --git a/wct4xxp.c b/wct4xxp.c
index 527df1f..d39822f 100755
--- a/wct4xxp.c
+++ b/wct4xxp.c
@@ -59,6 +59,7 @@ static int timingcable;
 static int highestorder;
 static int t1e1override = -1;
 static int loopback = 0;
+static int alarmdebounce = 0;
 
 #ifdef FANCY_ALARM
 static int altab[] = {
@@ -93,6 +94,7 @@ struct t4 {
 	int alarmtimer[4];		/* Alarm timer */
 	int redalarms[4];
 	int blinktimer;
+	int alarmcount[4];			/* How much red alarm we've seen */
 #ifdef FANCY_ALARM
 	int alarmpos;
 #endif
@@ -1169,8 +1171,13 @@ static void __t4_check_alarms(struct t4 *wc, int span)
 			alarms |= ZT_ALARM_NOTOPEN;
 	}
 
-	if (c & 0xa0) 
-		alarms |= ZT_ALARM_RED;
+	if (c & 0xa0) {
+		if (wc->alarmcount[span] >= alarmdebounce) 
+			alarms |= ZT_ALARM_RED;
+		else
+			wc->alarmcount[span]++;
+	} else
+		wc->alarmcount[span] = 0;
 	if (c & 0x4)
 		alarms |= ZT_ALARM_BLUE;
 
@@ -1714,6 +1721,7 @@ MODULE_PARM(debug, "i");
 MODULE_PARM(loopback, "i");
 MODULE_PARM(timingcable, "i");
 MODULE_PARM(t1e1override, "i");
+MODULE_PARM(alarmdebounce, "i");
 
 MODULE_DEVICE_TABLE(pci, t4_pci_tbl);