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esp32_Adafruit_GPS
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Revert "parse checksum to *" 

This reverts commit 0f867b508a.
This commit is contained in:
Rick Sellens 2019-04-16 12:49:05 -04:00
parent 37fed7f05d
commit 968e95344c
1 changed files with 5 additions and 6 deletions
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11
Adafruit_GPS.cpp
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@ -55,14 +55,13 @@ boolean Adafruit_GPS::parse(char *nmea) {
// do checksum check
// first look if we even have one
char *ast = strchr(nmea,'*');
if (ast != NULL) {
uint16_t sum = parseHex(*(ast+1)) * 16;
sum += parseHex(*(ast+2));
if (nmea[strlen(nmea)-4] == '*') {
uint16_t sum = parseHex(nmea[strlen(nmea)-3]) * 16;
sum += parseHex(nmea[strlen(nmea)-2]);
// check checksum
for (char *p = nmea+2; p < ast; p++) {
sum ^= *p;
for (uint8_t i=2; i < (strlen(nmea)-4); i++) {
sum ^= nmea[i];
}
if (sum != 0) {
// bad checksum :(