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authorEric S. Raymond <esr@thyrsus.com>2005-05-05 20:13:31 +0000
committerEric S. Raymond <esr@thyrsus.com>2005-05-05 20:13:31 +0000
commitc523de0f0712d3938e8452a7655b447c251eb524 (patch)
tree107471b8f084c0a22af58a70e649003bef9d3e31 /TODO
parentbf26acc7ffd6343549166d4a3fcd8bf0b6da5263 (diff)
downloadgpsd-c523de0f0712d3938e8452a7655b447c251eb524.tar.gz
Describe the crazy-speed bug.
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This is the gpsd to-do list. If you're viewing it with Emacs, try
doing Ctl-C Ctl-t and browsing through the outline headers.
+** The crazy-speed bug
+
+Two gpsd users have reported that their clients report insanely high
+speeds in a moving car. Here's what we know about this bug:
+
+1. It has only been reported from SiRF chips.
+2. It does not occur when the SiRF chip is switched to NMEA mode using N.
+3. Setting the static-navigation and track-smoothing bits doen't banish it.
+4. It isn't specific to gpsd -- sirfmon shows the same high speeds.
+
+Not all SiRF users are rreporting this. It may be specific to some
+SiRF firmware versions.
+
** Set FIFO threshold to 1 to reduce jitter in serial-message times
This can matter if you're using gpsd as a time reference.
@@ -166,12 +179,6 @@ News flash: it develops that the "Navigation receiver warning" is
supposed to indicate a valid fix that has a DOP too high or fails
an elevation test.
-** Contact info:
-
-SiRF-II contacts:
- Carl Carter (714)-435-4902 ccarter@sirf.com.
- Richard Saucedo (408)-392-8385 rsaucedo@sirf.com
-
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