Commit 526aa2e5 authored by Hal Murray's avatar Hal Murray

Fix minor typos.

parent 5eb11bd2
......@@ -100,7 +100,7 @@ Specific GPS sentences and bitrates may be selected by setting bits of the \'mod
[cols="10%,10%,10%,70%",options="header"]
|=============================================================================
|Bit | Decimal | Hex | Meaning
|0 |1 |1 |process +$GPMRC+
|0 |1 |1 |process +$GPRMC+
|1 |2 |2 |process +$GPGGA+
|2 |4 |4 |process +$GPGLL+
|3 |8 |8 |process +$GPZDA+ or +$GPZDG+
......
......@@ -880,13 +880,13 @@ nmea_receive(
* make sure it came in clean
*
* Apparently, older NMEA specifications (which are expensive)
* did not require the checksum for all sentences. $GPMRC is
* did not require the checksum for all sentences. $GPRMC is
* the only one so far identified which has always been required
* to include a checksum.
*
* Today, most NMEA GPS receivers checksum every sentence. To
* preserve its error-detection capabilities with modern GPSes
* while allowing operation without checksums on all but $GPMRC,
* while allowing operation without checksums on all but $GPRMC,
* we keep track of whether we've ever seen a valid checksum on
* a given sentence, and if so, reject future instances without
* checksum. ('up->cksum_type[NMEA_GPRMC]' is set in
......
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