From c1231057dc39252fbd5eb243cb30f25ce6db9c95 Mon Sep 17 00:00:00 2001
From: "Gary E. Miller" <gem@rellim.com>
Date: Thu, 25 Oct 2018 13:30:47 -0700
Subject: driver_nmea0183: Fix off by one error in $GLGSV decode.

---
 driver_nmea0183.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'driver_nmea0183.c')

diff --git a/driver_nmea0183.c b/driver_nmea0183.c
index 74bd42c5..cdbef44e 100644
--- a/driver_nmea0183.c
+++ b/driver_nmea0183.c
@@ -637,7 +637,7 @@ static int nmeaid_to_prn(char *talker, int satnum, unsigned char *gnssid,
     } else if (65 <= satnum && 96 >= satnum) {
         /* GLONASS */
         *gnssid = 6;
-        *svid = satnum - 65;
+        *svid = satnum - 64;
     } else if (120 <= satnum && 158 >= satnum) {
         /* SBAS */
         *gnssid = 1;
-- 
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