From 868e9704901562f7f1db663d309a7ec73b32b833 Mon Sep 17 00:00:00 2001
From: robertl <robertl>
Date: Wed, 18 Oct 2006 22:38:44 +0000
Subject: [PATCH] Let serial (and only serial) NMEA reader accept a 'bad'
 position, but mark it so that the consumer can know that it's bad.

---
 nmea.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/nmea.c b/nmea.c
index 012333f4b..fd18320dc 100644
--- a/nmea.c
+++ b/nmea.c
@@ -373,7 +373,12 @@ gpgga_parse(char *ibuf)
 		&lngdeg,&lngdir,
 		&fix,&nsats,&hdop,&alt,&altunits);
 
-	if (fix == 0) {
+	/*
+	 * In serial mode, allow the fix with an invalid position through
+	 * as serial units will often spit a remembered position up and
+	 * that is more comfortable than nothing at all...
+	 */
+	if ((fix == 0) && (read_mode != rm_serial)) {
 		return;
 	}
 
@@ -402,6 +407,9 @@ gpgga_parse(char *ibuf)
 	waypt->hdop 	= hdop;
 
 	switch (fix) {
+		case 0:
+			waypt->fix = fix_none;
+			break;
 		case 1:
 			waypt->fix  = (nsats>3)?(fix_3d):(fix_2d);
 			break;
-- 
2.30.2