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409 Commits

Author SHA1 Message Date
Niels Joubert 2b1169b0ab AP_GPS: SwiftNav RTK Driver and GPS AutoSwitch param 2014-06-30 10:29:56 +10:00
Randy Mackay 69ad632e2a GPS: correct NAVFILTER parameter description 
These corrected values match the GPS_Engine_Setting enum in GPS.h
Thanks to Adolfo R for noticing the issue and providing the fix
 2014-05-20 22:08:40 +09:00
Andrew Tridgell 30f5e2c37f AP_GPS: work around scheduling issue in example code 2014-05-16 22:35:32 +10:00
Andrew Tridgell 73976e2ca4 AP_GPS: fixed example build 2014-05-16 22:05:04 +10:00
Jonathan Challinger 0bb7b8e938 AP_GPS: Fix bug that causes permanent lag if we miss a message 2014-04-29 15:35:46 +10:00
Andrew Tridgell b0fd94f18e AP_GPS: initialise a variable in uBlox driver 2014-04-23 18:15:53 +10:00
Andrew Tridgell 5a7afbf2cd AP_GPS: prevent writing GPS log headings multiple times 2014-04-20 21:44:14 +10:00
Andrew Tridgell 3b8839d2f7 AP_GPS: fixed num_sensors on APM2 2014-04-11 21:32:55 +10:00
Andrew Tridgell a821b0e198 AP_GPS: fixed a build warning 
Debug() should not be exposed in public headers
 2014-04-10 10:28:55 +10:00
Andrew Tridgell 43ebd86bb1 AP_GPS: disable SBP driver on APM2 
the driver uses double precision floating point, which can't work on
8bit AVR with gcc
 2014-04-05 21:47:46 +11:00
Andrew Tridgell 5a585b90e8 AP_GPS: fixed some warnings in SBP driver 2014-04-05 14:18:01 +11:00
Niels Joubert 33576dfdd9 AP_GPS: Swift Binary Protocol SINGLE-POINT-POSITIONING Driver 
This is the SBP driver for Piksi, Lodestar and other forthcoming Swift Navigation GPSes.
This driver currently implements three things:
- Implements a lightweight SBP protocol detection system
- Implements Piksi as a single-point-positioning GPS (same as ublox/others)
- Implements hardware logging of GPS health and baseline messages

Forthcoming iin future updates:
- Need to implement the RTK functionality
 2014-04-05 13:42:23 +11:00
Niels Joubert 552f33b39e AP_GPS: Support fix types of DGPS and RTK 2014-04-05 13:42:23 +11:00
Andrew Tridgell 67ed5b73ef AP_GPS: added lock_port() interface 
used by SERIAL_CONTROL message
 2014-04-05 07:34:33 +11:00
Andrew Tridgell d9d038345a AP_GPS: save 800 bytes of code space on APM2 
we can assume a single GPS
 2014-04-04 10:08:28 +11:00
Andrew Tridgell 9f857529ca AP_GPS: auto-switch primary GPS based on status and number of satellites 2014-04-04 08:32:34 +11:00
Andrew Tridgell 21c205a57e AP_GPS: cope with different MON-HW message size in u-Blox Neo7 2014-04-03 10:55:05 +11:00
Craig Elder 3a92d75936 Ublox: Enable 1Hz Lock LED by default 2014-04-01 20:57:18 -07:00
Andrew Tridgell e40a048009 AP_GPS: handle multiple GPS in GPS setHIL() 2014-04-02 07:55:28 +11:00
Andrew Tridgell 79f5618f6f AP_GPS: zero state structure on driver release 
this ensures no values are left from the previous driver
 2014-04-02 07:55:28 +11:00
Andrew Tridgell 7e2ef0cfc0 AP_GPS: fixed GPS for Replay 2014-04-01 17:25:15 +11:00
Andrew Tridgell 77e2f48581 AP_GPS: fixed notify updates for new API 2014-04-01 06:38:25 +11:00
Andrew Tridgell 9781175bf5 AP_GPS: fixed handling of driver destruction 
this allows for more complex destructors, and ensures we don't have
multiple backends allocated at once per instance
 2014-04-01 06:38:25 +11:00
Andrew Tridgell 7ceba8dce4 AP_GPS: prevent double allocation of GPS drivers 2014-04-01 06:38:25 +11:00
Andrew Tridgell 8779ffe088 AP_GPS: flush pending config strings when uBlox starts 2014-04-01 06:38:25 +11:00
Andrew Tridgell 0191355488 AP_GPS: fixed init strings to all be in progmem 
and sent async ...
 2014-04-01 06:38:25 +11:00
Andrew Tridgell c2486d8d6e AP_GPS: updated examples for new API 
removed old per-driver examples, and updates AUTO example
 2014-04-01 06:38:25 +11:00
Andrew Tridgell 368daf89f1 AP_GPS: new GPS API 
This is a complete rewrite of the GPS driver structure, with a static
main driver and separate backend drivers. This will allow proper
support for multiple GPSes, and will allow parameters to be set on the
GPS object
 2014-04-01 06:38:23 +11:00
Andrew Tridgell 2dd92832dc AP_GPS: support multiple AP_GPS_Auto drivers 
move all static variables into a dynamically allocated structure in
the AUTO driver which gets freed when we have found a GPS type
 2014-04-01 06:38:23 +11:00
Andrew Tridgell 3c4389180e AP_GPS: removed GPS_406 driver 
this driver was untested and badly structured. If we want to support
the 406 we can revive it and do it properly
 2014-04-01 06:38:23 +11:00
Andrew Tridgell c6f3e0a81c AP_GPS: fixed example builds 2014-03-24 12:20:34 +11:00
Andrew Tridgell 5630bb1ef6 AP_GPS: added detailed hardware status logging for uBlox 
this gives us noise, jamming and RF information from the uBlox
protocol. This will hopefully allow a more detailed investigation of
antenna choices and RF interference
 2014-03-24 12:02:37 +11:00
Andrew Tridgell 7ff293ca38 AP_GPS: added DataFlash to GPS init to allow for detailed logging 
this will allow GPS drivers to log much more detailed device specific
information
 2014-03-24 12:01:13 +11:00
Andrew Tridgell 6b5d27efbb AP_GPS: fixed example builds with change to init() 2014-03-16 06:44:50 +11:00
Andrew Tridgell 9cf1fd46c8 AP_GPS: removed nav_setting default 
not needed, and apparently caused issue with xcode 5.1
 2014-03-14 07:49:56 +11:00
Andrew Tridgell 794cc33e6a GPS: added set_secondary() function 
for preventing notify updates for 2nd GPS
 2014-03-08 21:47:49 +11:00
Andrew Tridgell d7b2a09919 AP_GPS: added fix type to setHIL 2014-02-25 21:10:30 +11:00
Andrew Tridgell 7a6f671659 AP_GPS: added have_vertical_velocity() function 
for use by EKF
 2014-02-24 18:24:10 +11:00
JakobSt 986417067e AP_GPS: Improved accuracy of NMEA driver 
The conversion of ret (32bit-integer) to float reduced accuracy to ~9cm or ~22cm. Now it's ~1cm.
 2014-01-13 09:58:30 +11:00
Andrew Tridgell e7a1331b81 AP_GPS: allow HIL GPS to show no lock 2013-12-30 14:35:20 +11:00
Andrew Tridgell 519a26691e AP_GPS: make last_message_time_ms const 2013-12-29 18:39:07 +11:00
Andrew Tridgell 7a12f44a41 AP_GPS: GPS week is unsigned 2013-12-11 17:29:27 +11:00
Andrew Tridgell 137880be70 AP_GPS: fixed a build warning 2013-12-11 10:22:22 +11:00
Randy Mackay 91c17e9848 GPSGlitch: reduce radius to 2m 2013-12-09 11:42:03 +09:00
Randy Mackay e489224c6b GPSGlitch: update @Range for RADIUS and ACCEL params 2013-11-24 23:21:19 +09:00
Randy Mackay bd6511dd0a GPS: add GPS_UBLOX_passthrough sketch 
This sketch allows the user to configure the Ublox GPS using U-Center
without the need for an FTDI cable.
 2013-11-24 14:53:08 +09:00
Andrew Tridgell 72415ed358 AP_GPS: change HIL GPS to always be 5Hz 
this prevents too short updates in DCM from affecting attitude
 2013-11-23 18:50:57 +11:00
Randy Mackay 7c52572020 Ublox: disable NMEA info in 3DR config 2013-11-21 17:02:00 +09:00
Randy Mackay 4e5cb72604 Ublox: set default rate to 5hz in 3DR config 2013-11-21 17:01:58 +09:00
Randy Mackay b349d95269 Ublox: disable TimePulse Timedata in 3DR config 2013-11-21 17:01:55 +09:00
Randy Mackay 25046b4e6d Ublox: update config to ver 7.03 2013-11-21 17:01:52 +09:00
Randy Mackay bcbf0feff0 GPS Glitch: revert accel max to 10m/s/s 
This may not be the best real world value but it keeps the autotester
from failing because it recovers from the glitch before the 5second
time-out on the GPS failsafe
 2013-11-13 21:33:34 +09:00
Randy Mackay 3bd124eb72 GPS Glitch: radius and accel max to 5m and 5m/s/s 2013-11-13 11:49:21 +09:00
Andrew Tridgell ff73773de4 AP_GPS: try harder to get 5Hz updates from a uBlox 
check for getting at least one 5Hz update every 15s
 2013-11-05 15:18:25 +11:00
Andrew Tridgell de96ad9445 AP_GPS: fixed date handling in NMEA driver 2013-10-24 14:22:48 +11:00
Andrew Tridgell 744819cec8 AP_GPS: added fake time to fake GPS lock 2013-10-24 14:22:48 +11:00
Andrew Tridgell 6f5ac1d553 AP_GPS: added support for GPS time in week/millisec 
also adds time_epoch_usec() for MAVLink SYSTEM_TIME
 2013-10-24 14:22:47 +11:00
Andrew Tridgell 25d3e5b7e9 AP_GPS: changed fake GPS fix to have a latitude/longitude 
Pair-Programmed-With: Randy Mackay <rmackay9@yahoo.com>
 2013-10-11 16:06:35 +11:00
Randy Mackay 13cf7c96cd GPSGlitch: parameters for accel and always-ok-radius 2013-10-09 13:02:14 +09:00
Andrew Tridgell 7a9ed0a5a1 AP_GPS: fixed warning 2013-10-03 12:21:08 +10:00
Andrew Tridgell 5489097476 AP_GPS: update the UBLOX rates async from the start 
this saves a bit of startup time
 2013-10-03 12:21:07 +10:00
Andrew Tridgell cee8a017ab AP_GPS: added UBLOX_FAKE_3DLOCK debugging option 
useful when unable to get 3D lock
 2013-10-03 12:21:07 +10:00
Andrew Tridgell 34f7f88190 AP_GPS: check for corret GPS solution rates in flight and fix 
if the GPS is giving us data at less than 300ms intervals then re-send
the configuration messages to try to kick it into the right rates

Pair-Programmed-With: Randy Mackay <rmackay9@yahoo.com>
 2013-10-03 12:21:07 +10:00
Randy Mackay cddbaf0459 GPS_Glitch: make accessor functions const 2013-09-24 21:41:56 +09:00
Randy Mackay 55c94b3b41 GPS_Glitch: bug fix for enable/disable parameter 2013-09-24 21:41:54 +09:00
Randy Mackay a2c0415ba9 GPS_Glitch: make enable/disable a parameter 2013-09-24 21:41:42 +09:00
Randy Mackay 78124f2fca GPS_Glitch: remove unused recovered flag 2013-09-24 21:41:38 +09:00
Randy Mackay 4dcfce7104 GPS_Glitch: glitch detection class 2013-09-24 21:41:10 +09:00
Andrew Tridgell 448167e958 AP_GPS: fixed examples build 2013-09-24 11:57:03 +10:00
Andrew Tridgell 284492cfec AP_GPS: fixed an initialisation problem with GPS drivers 
before the first full packet arrives we could report uninitialised
values for groundspeed and heading
 2013-09-16 21:20:36 +10:00
Andrew Tridgell 5484b97419 AP_GPS: reset _fix_count to 0 on nav settings update 
this makes it run every 20s exactly
 2013-09-04 13:18:00 +10:00
Andrew Tridgell 879d44f930 AP_GPS: use the mask bits to only set dynamic model 
this ensures we don't try to change any other CFG_NAV5 settings
 2013-09-04 13:17:20 +10:00
Andrew Tridgell 97b7130bb9 libraries: update license header to GPLv3 
we switched to GPLv3 a long time ago, but neglected to update the
per-file license headers
 2013-08-30 13:01:39 +10:00
Andrew Tridgell e6bd3b65b9 AP_GPS: fixed examples build 2013-08-30 13:01:36 +10:00
Andrew Tridgell 7b1e2b0e78 AP_GPS: don't need notify.h here 2013-08-30 13:01:35 +10:00
Randy Mackay 82b7b2cb3e GPS: integrate AP_Notify 2013-08-30 13:01:35 +10:00
Randy Mackay 496962f037 GPS: update notify 2013-08-30 13:01:35 +10:00
Andrew Tridgell b43bf44552 AP_GPS: improved the precision of the NMEA driver 
this brings the NMEA driver to the same lat/lon precision as the uBlox
driver (approx 1cm)
 2013-08-14 14:36:44 +10:00
Andrew Tridgell 01c124d5f5 AP_GPS: added velocity_vector() method 2013-07-22 12:50:00 +10:00
Andrew Tridgell c7141c4851 AP_GPS: fixed examples build 2013-07-15 14:09:07 +10:00
Andrew Tridgell 7dbb898264 AP_GPS: switch fields to add units suffix 
altitude -> altitude_cm
ground_speed -> ground_speed_cm
ground_course -> ground_course_cd

this helps prevent unit mixups
 2013-07-10 14:04:22 +10:00
Tobias c95072ea25 AP_GPS: added explicit cast to omit [-Wconversion] warning 2013-07-08 14:53:20 +10:00
Andrew Tridgell edfebc1f29 AP_GPS: fixed indent-tabs-mode 2013-05-30 09:52:21 +10:00
Andrew Tridgell 06b6f4b04e AP_GPS: use PACKED attribute instead of pragma pack 2013-05-09 20:10:31 +10:00
Andrew Tridgell 786e4cf705 AP_GPS: added last_message_time_ms() API 
used to help GPS logging
 2013-04-28 14:53:02 +10:00
Andrew Tridgell f5d062d5ba AP_GPS: move byte swapping code to cpp 2013-04-28 14:51:37 +10:00
Andrew Tridgell c3abdaf308 AP_GPS: removed duplicate print_latlon() 2013-04-20 13:57:59 +10:00
Andrew Tridgell 8d727614b4 AP_GPS: make status() const 2013-04-20 13:52:36 +10:00
Andrew Tridgell b3ec5187f2 AP_GPS: fixed uninitialied variable bugs found with valgrind 2013-04-17 23:02:13 +10:00
Andrew Tridgell a5c3051929 AP_GPS: fixed initialisation error in uBlox driver 
found with valgrind
 2013-04-12 14:25:46 +10:00
Randy Mackay 93f7e61b66 UBLOX GPS: fix MSG_SOL typo 
"status" was used instead of "solution"
 2013-03-27 11:42:05 +09:00
Randy Mackay 27309a553f GPS: fixes after review 
Ensure 3D fix before returning velocity_down
UBLOX: restore check of fix_status as part of determining 2D or 3D fix
SIRF: add missing brackets on fix type check
 2013-03-27 11:41:54 +09:00
Randy Mackay d7454bb09e GPS: add 2D fix type 2013-03-27 11:41:39 +09:00
Andrew Tridgell 3f6eb87f23 AP_GPS: fixed uBlox Debug() macro 2013-03-20 15:42:07 +11:00
Andrew Tridgell 551950c573 GPS_UBLOX: fixed auto-config of baudrate 
this fixes the setting of the baudrate on a uBlox that is configured
for 9600. It fixes the NMEA message to have a \r\n, plus sends the
NAV_SOL rate config before the NMEA baudrate config message.

This fixes issue #159
 2013-03-17 17:52:48 +11:00
Andrew Tridgell f67480fa50 AP_GPS: ensure constructors zero all key variables 
this prevents a crash on PX4 if a GPS is attached after startup
 2013-02-20 11:33:39 +11:00
Andrew Tridgell 93ef403529 AP_GPS: removed unused AP_GPS_Shim.h 2013-02-20 11:33:39 +11:00
Andrew Tridgell 727f8ff029 AP_GPS: removed the old MTK16 driver 
the MTK19 driver supports both the 1.6 and 1.9 protocol
 2013-02-16 22:03:53 +11:00
James Bielman 5631f865b2 Update floating point calculations to use floats instead of doubles. 
- Allows use of hardware floating point on the Cortex-M4.
- Added "f" suffix to floating point literals.
- Call floating point versions of stdlib math functions.
 2013-01-16 13:52:01 +11:00
Andrew Tridgell 252d11ccfa AP_GPS: initialise _step to zero in all drivers 
new() does not zero-fill memory
 2013-01-12 16:04:23 +11:00
Andrew Tridgell f3783b0306 AP_GPS: put SIRF init_messages in progmem 
this saves 32 bytes of memory
 2013-01-10 21:27:41 +11:00
Andrew Tridgell f93a7d50eb AP_GPS: fixed debug code 2013-01-07 11:06:53 +11:00
Andrew Tridgell f7e5f88199 AP_GPS: make UBLOX driver a bit more robust 2013-01-05 20:39:31 +11:00
Andrew Tridgell 3b0398dc14 AP_GPS: fixed UBLOX example for PX4 2013-01-05 20:39:30 +11:00
Andrew Tridgell 2f111b857b AP_GPS: ported test code for PX4 2013-01-04 19:41:36 +11:00
Andrew Tridgell f701d0cc85 AP_GPS: a couple more places where we should restart 
this prevents us losing a byte
 2013-01-04 19:40:49 +11:00
Andrew Tridgell 3bfff4bd6d AP_GPS: pragma pack is needed on ARM 
we rely on GPS data structures having byte alignment. Luckily GCC can
cope with this.
 2013-01-04 19:39:15 +11:00
Andrew Tridgell 374af1cd14 build: change from Arduino.mk to apm.mk 2013-01-02 17:29:37 +11:00
Andrew Tridgell 609ef220a6 AP_GPS: more state machine fixes for MTK19 GPS 2013-01-02 14:45:09 +11:00
Andrew Tridgell c980b32319 GPS: fixed state machine logic errors in MTK19 driver 2013-01-02 10:12:55 +11:00
Andrew Tridgell 8c0d1d7084 GPS: fixed MTK19 driver for AP_HAL merge 2013-01-02 09:55:37 +11:00
Craig@3DR 2de676306e Improved parsing in auto detect 2013-01-02 09:24:31 +11:00
Craig@3DR 8cfefbc275 Updated rev number in driver 2013-01-02 09:22:21 +11:00
rmackay9 90d7f00965 AP_GPS_MTK16: saved 22 bytes of ram by moving error message into program space. 
Perhaps there's no point in writing an error message to a console that likely nobody will be viewing anyway.
 2013-01-02 09:18:03 +11:00
rmackay9 811550cca6 AP_GPS_MTK19: small bug fix re "==" vs "=" 
Also saved 22 bytes of RAM by moving error message into program space.
 2013-01-02 09:16:48 +11:00
Craig@3DR f778961acf Added support for Mediatek firmware Rev 1.9 2013-01-02 09:16:47 +11:00
Andrew Tridgell 4a6b46c661 AP_GPS: fixed multiple GPS detection bug 2012-12-20 14:53:24 +11:00
Andrew Tridgell f549950a9c AP_GPS: remove some debug code 2012-12-20 14:53:23 +11:00
Andrew Tridgell ceb3f577d8 libraries: use new math functions 2012-12-20 14:53:22 +11:00
Andrew Tridgell 2679eabdef Cleanup: removed unused AP_GPS_IMU 2012-12-20 14:52:37 +11:00
Andrew Tridgell 8beaec61a8 AP_GPS: fixed build for new syntax 2012-12-20 14:52:36 +11:00
Pat Hickey eb530b86e8 move Arduino.mk to /mk/Arduino.mk 2012-12-20 14:52:35 +11:00
Andrew Tridgell 18db7b2efd GPS: move _port setting to init() 
this is needed to avoid constructor ordering dependencies
 2012-12-20 14:52:32 +11:00
Andrew Tridgell 7d27e420ae AP_HAL: remove unnecessary Arduino.h includes 2012-12-20 14:52:30 +11:00
Pat Hickey f1869d1aa6 AP_GPS: GPS_406_test ported to AP_HAL 2012-12-20 14:51:40 +11:00
Pat Hickey d6cb240468 AP_GPS: GPS_NMEA_test ported to AP_HAL 
* I wasn't able to demonstrate the library/test sketch working with my
  ublox gps.
 2012-12-20 14:51:40 +11:00
Andrew Tridgell 18fb9c67f6 AP_GPS: use AP_Progmem 2012-12-20 14:51:39 +11:00
Pat Hickey 475da4eca4 CONFIG_HAL_BOARD - test sketches fixed up, build all passes 2012-12-20 14:51:37 +11:00
Andrew Tridgell 13309cceb3 AP_GPS: reverted formatting of GPS messages 2012-12-20 14:51:37 +11:00
Pat Hickey 2be552ea22 AP_GPS: less chatty autodetect 2012-12-20 14:51:35 +11:00
Pat Hickey d72c5cf828 AP_GPS: uartB fixup 2012-12-20 14:51:35 +11:00
Pat Hickey a4f1f6a5db AP_Progmem: fix dependencies for all sketches touched by AP_HAL_AVR 2012-12-20 14:51:28 +11:00
Andrew Tridgell 53105efbcd HAL_AVR: more uart0 -> console changes 2012-12-20 14:51:27 +11:00
Andrew Tridgell d133f15f57 HAL_AVR: use hal.console instead of hal.uart0 2012-12-20 14:51:27 +11:00
Pat Hickey c56c4ae240 Various example sketches: hal.uart0->begin(115200) is redundant. use console. 
just assume uart0 is initialized by the HAL, because it is. DRY.
also, don't ever use uart0 explicitly in example sketches, use console
and let the hal figure it out.
 2012-12-20 14:51:25 +11:00
Pat Hickey deb96143d3 AP_GPS_IMU: fix type punning warnings by using memcpy 2012-12-20 14:51:25 +11:00
Pat Hickey 9ed023aeb4 AP_GPS: Builds under AP_HAL. Not tested. 2012-12-20 14:51:25 +11:00
Pat Hickey 3f1d9d7f69 AP_Param: #include <AP_Param.h> fixups for libraries & sketches 
* I mostly went through with grep and added an #include <AP_Param.h> below
  every #include <AP_Common.h>. Not all of these example sketches might
  strictly need AP_Param.
 2012-12-20 14:51:19 +11:00
Craig@3DR 2586c7a32a Updated the MediaTek configuration 
to set the minimum speed the GPS must be moving to update the position to 0 m/s.
to enable SBAS / WAAS / DGPS position fixes.
 2012-12-11 15:35:52 -08:00
Andrew Tridgell 57d3609d00 AP_GPS: fixed examples build 2012-11-24 21:07:53 +11:00
Andrew Tridgell 2e63b3ae8e AP_GPS: added in two more dynamic model enums 2012-11-22 16:23:29 +11:00
Andrew Tridgell 984b1086cb AP_GPS_UBLOX: ask for nav settings every 20 seconds 
this ensures we don't run with the wrong nav settings on a uBlox if
we get a bad checksum on the initial nav settings message
 2012-11-05 14:58:40 +11:00
Andrew Tridgell 72e97c6dfc AP_GPS: start detection timer on first bytes 
this prevents a uBlox plugged in late from being detected as a NMEA
GPS
 2012-11-05 14:58:40 +11:00
Andrew Tridgell 6f9fa7d3b3 AP_GPS: removed shadowed class variable _nav_setting 
this caused a uBlox to incorrectly configure as "portable" instead of
airborne if the detection took more than 2 seconds. That led to
terrible performance.
 2012-11-05 14:58:40 +11:00
Andrew Tridgell e74e730992 AP_GPS: added velocity_down() call 
on GPSes with raw velocity support this will be used for DCM
correction
 2012-11-05 14:58:40 +11:00
Andrew Tridgell a53cbc08f3 GPS: avoid output delays in the GPS auto detection 
this sends out the GPS init strings in 16 byte chunks to avoid causing
timing glitches when no GPS is attached
 2012-10-18 16:18:32 +11:00
Andrew Tridgell 608cc60689 GPS: fixed SIRF auto detect code 2012-09-25 07:10:07 +10:00
rmackay9 50a97f3092 AP_GPS: added get_lag method to return expected lag from the GPS. 2012-09-20 15:48:22 +09:00
Andrew Tridgell 728b3a133e GPS: disable auto detection of NMEA and SiRF on a 1280 board 
saves a bit more flash space
 2012-09-19 19:36:48 +10:00
Andrew Tridgell 59b44816ec GPS: replaced the GPS auto-detect mechanism 
the old mechanism wasted most of the input bytes, and chewed a lot of
CPU, making it impractical to do GPS detection for a GPS attached
after startup

The new code is async, and detects a GPS by looking for a fully formed
packet with the right checksum for each GPS type
 2012-09-17 14:45:47 +10:00