From: Tilman Sauerbeck <tilman@code-monkey.de>
Date: Sat, 4 Jan 2020 18:15:08 +0000 (+0100)
Subject: common: Accept DGPS fix information.
X-Git-Url: http://git.code-monkey.de/?p=gps-watch.git;a=commitdiff_plain;h=cc7c3075ec1349d84cd0cddb9cb67f36c8dd6666

common: Accept DGPS fix information.

We used to reject differential GPS (DGPS) fixes as invalid, but they
are actually more accurate than standard GPS fixes.
---

diff --git a/src/common/gps.rs b/src/common/gps.rs
index b053917..64772c7 100644
--- a/src/common/gps.rs
+++ b/src/common/gps.rs
@@ -347,8 +347,16 @@ impl Gps {
                     return false;
                 }
 
-                if pos_fix_indicator != b"1" {
-                    return false;
+                match pos_fix_indicator {
+                    b"1" => {
+                        // Valid standard GPS fix (low resolution).
+                    },
+                    b"2" => {
+                        // Valid differential GPS fix (high resolution).
+                    },
+                    _ => {
+                        return false;
+                    }
                 }
 
                 if utc_time.len() < 6 {