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| author | Eric S. Raymond <esr@thyrsus.com> | 2009-03-02 14:07:32 +0000 |
|---|---|---|
| committer | Eric S. Raymond <esr@thyrsus.com> | 2009-03-02 14:07:32 +0000 |
| commit | f0353549971ff5edd2b6631a9f45f5289c29ca4e (patch) | |
| tree | 735b446d2e2fc5810332b960beed4e50f2892f55 /gpsctl.xml | |
| parent | f737c390dbe646441329d19f31af8ff8f86afc31 (diff) | |
| download | gpsd-f0353549971ff5edd2b6631a9f45f5289c29ca4e.tar.gz | |
Document the fact that parity and stopbit setting is now supported but dicy.
Diffstat (limited to 'gpsctl.xml')
| -rw-r--r-- | gpsctl.xml | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -118,6 +118,14 @@ its new speed.</para> <term>-s</term> <listitem> <para>Set the baud rate at which the GPS emits packets.</para> + +<para>Use this option with caution. On USB and Bluetooth GPSes it is +also possible for serial mode setting to fail either because the +serial adaptor chip does not support non-8N1 modes or because the +device firmware does not properly synchronize the serrial adaptor chip +with the UART on the GPS chipset whjen the speed changes. These +failures can hang your device, possibly requiring a GPS power cycle or (in +extreme cases) physically disconnecting the NVRAM backup battery.</para> </listitem> </varlistentry> |