From 8bad5eacfb5aefc15ad3f81ab4db38fd1004d3b7 Mon Sep 17 00:00:00 2001
From: sellensr <sellensr@gmail.com>
Date: Mon, 15 Apr 2019 13:50:37 -0400
Subject: [PATCH] tidy lines and checksum

Parse start of checksum as character after first $.
Don't include '\n' or '\r' in GPS lines read. Previous code was putting '\r' at the end of each line and '\n' at the start before the $, thus having to start the checksum calculation at the third character. This may break the spacing on some code that prints out the NMEA lines.
---
 Adafruit_GPS.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Adafruit_GPS.cpp b/Adafruit_GPS.cpp
index 0535d57..c1891d0 100755
--- a/Adafruit_GPS.cpp
+++ b/Adafruit_GPS.cpp
@@ -61,7 +61,7 @@ boolean Adafruit_GPS::parse(char *nmea) {
     sum += parseHex(*(ast+2));
 
     // check checksum
-    for (char *p = nmea+2; p < ast; p++) {
+    for (char *p = strchr(nmea,'$')+1; p < ast; p++) {
       sum ^= *p;
     }
     if (sum != 0) {
@@ -414,7 +414,7 @@ char Adafruit_GPS::read(void) {
     recvdflag = true;
   }
 
-  currentline[lineidx++] = c;
+  if(c != '\n' && c != '\r') currentline[lineidx++] = c;
   if (lineidx >= MAXLINELENGTH)
     lineidx = MAXLINELENGTH-1;