From 014e3fc6a12c7931c5767a12a79632089c0e624a Mon Sep 17 00:00:00 2001
From: John Klug <john.klug@multitech.com>
Date: Mon, 25 Oct 2021 09:39:11 -0500
Subject: Document U-Blox with ACM driver

---
 recipes-navigation/gpsd/gpsd/gpsd-default | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/recipes-navigation/gpsd/gpsd/gpsd-default b/recipes-navigation/gpsd/gpsd/gpsd-default
index 3f9ef92..c8c6f17 100644
--- a/recipes-navigation/gpsd/gpsd/gpsd-default
+++ b/recipes-navigation/gpsd/gpsd/gpsd-default
@@ -55,6 +55,9 @@ function SET_GPS_SPEED {
 
 ((maxtries = 20))
 if [[ $(cat /run/config/gpstype) == u-blox ]] ; then
+    # If the U-Blox is connected via USB, it shows
+    # up as using the ACM serial driver.  This greatly
+    # simplifies setting up the U-Blox GNSS.
     if [[ $(readlink $GPS_LINE0) =~ ^ttyACM ]] ; then
         stty -F $GPS_LINE 115200
         return 0
-- 
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