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13577 Commits

Author SHA1 Message Date
Luis Rodrigues 27c5aca6b5 AP_Proximity: add support for TeraRangerTower 2017-02-03 14:27:52 +09:00
Andrew Tridgell 787a2093ec HAL_PX4: fixed motor test for brushed motors 
this fixes zero pwm output on a subset of channels. When using
motortest and asking for a single channel, multiple channels fired due
to an incorrect optimisation
 2017-02-02 09:27:48 +09:00
proficnc 2165a8832b Reduce the risk of the buzzer affecting IMU's during the battery alarm 2017-02-02 07:47:10 +11:00
Andrew Tridgell 01da36295d AP_InertialSensor: support the L3GD20H gyro 
this is used by the MRo Pixhawk1
 2017-01-31 07:39:36 +11:00
Michael du Breuil 302e80d72c AP_Vehicle: Move loiter_radius to vehicle 2017-01-30 10:43:54 -08:00
Andrew Tridgell 64a8f00a77 AP_Compass: disable esoteric compass drivers on FMUv2 2017-01-29 16:31:06 +11:00
Andrew Tridgell c0cc2faefd AP_GPS: disable esoteric GPS types on FMUv2 2017-01-29 16:31:06 +11:00
Andrew Tridgell 2bb1043c23 AP_HAL: added HAL_MINIMIZE_FEATURES 
this is used to select a minimal build to save flash space on FMUv2
 2017-01-29 16:31:06 +11:00
Francisco Ferreira 7ea0baefb1
AP_GPS: re-fix SBP fix status 2017-01-28 17:43:58 +00:00
Francisco Ferreira 512bd08326
AP_GPS: fix SBP supported status 2017-01-28 17:29:48 +00:00
Lucas De Marchi 87c82ce0c6 AP_Math: add some more tests for constrain_value() 2017-01-27 12:15:20 -08:00
Lucas De Marchi 82d210144b AP_Math: remove warnings from constrain_value() 
Return type is T which can be an integral type, float or double. By
dividing by 2 we avoid float operation on the first case and do the
right thing on the second and third.
 2017-01-27 12:15:19 -08:00
Lucas De Marchi 2605c7265b AP_Math: remove warnings from safe_asin() 
Return type is float, so operate on float types everywhere.
Fixes this warning while building for PX4:

../../libraries/AP_Math/AP_Math.cpp: In instantiation of 'float safe_asin(T) [with T = double]':
../../libraries/AP_Math/AP_Math.cpp:56:48:   required from here
../../libraries/AP_Math/AP_Math.cpp:44:11: warning: implicit conversion from 'float' to 'double' to match other operand of binary expression [-Wdouble-promotion]
     if (v >= 1.0f) {
           ^
../../libraries/AP_Math/AP_Math.cpp:47:11: warning: implicit conversion from 'float' to 'double' to match other operand of binary expression [-Wdouble-promotion]
     if (v <= -1.0f) {
           ^
 2017-01-27 12:15:19 -08:00
Lucas De Marchi 69a9cd3625 AP_Math: add tests to is_equal() 
Contemplate the use of double values.
 2017-01-27 12:15:19 -08:00
Lucas De Marchi 4f8d2059f8 AP_Math: use right epsilon for is_equal() 
We are calling fabsf(), which returns a float. We should use the epsilon
from float type, not from the argument type passed to fabsf().

On the other hand when the double version is instantiated we do want to
use the std::numeric_limits<double>::epsilon() value.

This adds a branch to the function, but it's removed when the function
is intantiated by the compiler since the type is known at compile-time.

Fixes this warning when building for PX4:
../../libraries/AP_Math/AP_Math.cpp: In instantiation of 'typename std::enable_if<std::is_floating_point<typename std::common_type<_Tp, _Up>::type>::value, bool>::type is_equal(Arithmetic1, Arithmetic2) [with Arithmetic1 = double; Arithmetic2 = double; typename std::enable_if<std::is_floating_point<typename std::common_type<_Tp, _Up>::type>::value, bool>::type = bool]':
../../libraries/AP_Math/AP_Math.cpp:23:66:   required from here
../../libraries/AP_Math/AP_Math.cpp:17:29: warning: implicit conversion from 'float' to 'double' to match other operand of binary expression [-Wdouble-promotion]
     return fabsf(v_1 - v_2) < std::numeric_limits<decltype(v_1 - v_2)>::epsilon();
                             ^
 2017-01-27 12:15:19 -08:00
priseborough 784fa6fed8 AP_NavEKF3: fix compiler error 2017-01-27 16:57:42 +09:00
priseborough 6d53ab7b76 AP_GPS: minor comment change 2017-01-27 16:57:42 +09:00
priseborough 2c36da2b21 AP_NavEKF3: relocate perf monitor to count all three mag components 2017-01-27 16:57:42 +09:00
priseborough a63eac8073 AP_NavEKF2: Add missing perf_end 2017-01-27 16:57:42 +09:00
priseborough 4d958952f6 AP_NavEKF3: use standard unit descriptor for milliseconds 2017-01-27 16:57:42 +09:00
priseborough 7ea37029b6 AP_NavEKF2: use standard unit descriptor for milliseconds 2017-01-27 16:57:42 +09:00
priseborough 4a490d522e AP_GPS: use standard unit descriptor for milliseconds 2017-01-27 16:57:42 +09:00
priseborough b5ba1d0346 AP_NavEKF3: protect against large delay values returned by the GPS library 2017-01-27 16:57:42 +09:00
priseborough be0096e812 AP_GPS: Allow the user to specify the GPS time delay 
If the user sets a non-zero value of the delay it will be used in preference over the default value for that GPS type.
If the GPS type is unknown and the parameter is set to zero, then a default delay of 1 sample period will be used (eg 200ms for 5Hz).
 2017-01-27 16:57:42 +09:00
priseborough 4540faf6af AP_NavEKF3: Improve waiting for GPS configuration 
Do not time out and provide an escalating series of messages. We may need to adjust the time thresholds used for escalation.
Do not wait if the EKF is not using the GPS.
 2017-01-27 16:57:42 +09:00
priseborough 52e8f687d9 AP_NavEKF3: fix logic bug introduced by magnetometer use changes 2017-01-27 16:57:42 +09:00
priseborough a133d55b6d AP_NavEKF3: Allow copters to fly with magnetometers disabled 
Copter operation without a magnetometer is limited to constant position and relative position modes only (no GPS or range beacon fusion permitted)
Copter optical flow operation without a magnetometer is permitted.
The ability of planes to takeoff/launch without a magnetometer and align the yaw using the GPS velocity is retained.
 2017-01-27 16:57:42 +09:00
priseborough 2e5ac40ef6 AP_NavEKF3: remove unnecessary stdio includes 2017-01-27 16:57:42 +09:00
priseborough 8688d1ddac AP_NavEKF3: Improve range finder selection logic 
Fixes bug that could leave it locked out of range finder use.
 2017-01-27 16:57:42 +09:00
priseborough 7e8f3fca53 AP_NavEKF3: Address review comments 
Removes a leftover debug printf statement.
Fixes documentation errors.
Replace remaining fmaxf function calls with Ardupilot MAX function
 2017-01-27 16:57:42 +09:00
priseborough b723966b8d AP_NavEKF2: Add protection against bad GPS time delay values 
Prevent bad values for GPS time delay pushing the GPS time stamp outside the range of IMU data contained in the buffer. If this occurs it can prevent the GPS measurements from being fused and cause loss of navigation.
 2017-01-27 16:57:42 +09:00
priseborough e2757c17c8 AP_AHRS_NavEKF: fix ekf variable naming and initialisation 2017-01-27 16:57:42 +09:00
priseborough 59ee074560 AP_NavEKF3: Remove EKF2 names 2017-01-27 16:57:42 +09:00
priseborough b862f0d7ad AP_NavEKF3: Enable use of GPS delay value from returned by the driver 
Use the time delay returned by the GPS driver.
Wait long enough for the GPS configuration to be determined, but time out after 30 seconds and warn the user that a default value for time delay will be used.
 2017-01-27 16:57:42 +09:00
Andrew Tridgell bdc0630ccf AP_GPS: added all_configured() function 
used for EKF to tell if gps_lag is valid
 2017-01-27 16:57:42 +09:00
Andrew Tridgell 5d18f3a453 AP_GPS: added backend specific get_lag() function 
the ublox7 and 8 seem to produce lower lag, around 120ms. Separately
we should also look at running these at 10Hz and see if that helps.
 2017-01-27 16:57:42 +09:00
priseborough 69a47d7522 AP_NavEKF3: Improve reporting of buffer allocation 2017-01-27 16:57:42 +09:00
priseborough ceb42225fd AP_NavEKF3: Ensure enough time to fill buffers when starting filter 2017-01-27 16:57:42 +09:00
priseborough a8fd1d8bcd AP_NavEKF3: fix potential time-stamping bug 
Use a consistent time reference
 2017-01-27 16:57:42 +09:00
priseborough 8d1733cee6 AP_NavEKF3: Use FIR filtered airspeed 
Switch to use of an airspeed reading averaged across the raw sensor readings. since the last update.
This avoids use of the IIR which requires a larger time delay compensation and violates the assumption of uncorrelated noise.
The time delay parameter has been reduced to compensate for the removal of the airspeed IIR filtering.
 2017-01-27 16:57:42 +09:00
priseborough 9261c34097 AP_NavEKF3: Update default GPS delay 
This value is a compromise between what works best for a Ublox 6 which is around 200msec delay and the more recent 7 and 8 series receivers that are around 120msec delay.
 2017-01-27 16:57:42 +09:00
priseborough ed5039823f AP_NavEKF3: Adapt sensor buffer lengths 
Adapt the lengths of the IMU and observations buffers on startup to the specified time delays and update rates.
This does require the EKF to be re-started if time delays are changed.
 2017-01-27 16:57:42 +09:00
priseborough 2cc48f78a7 AP_NavEKF3: Update range beacon fusion 
Add innovation consistency check to alignment filter and publish alignment filter status data
 2017-01-27 16:57:42 +09:00
priseborough ed0a90ae5f AP_Beacon: Apply correct conversion from Pozyx beacon earth frame 
The Pozyx beacon system uses a North, West, Up axis system and the APM software uses a North, East, Down convention.
 2017-01-27 16:57:42 +09:00
priseborough a02a84560f DataFlash: log 3-state range beacon estimator states for EKF3 2017-01-27 16:57:42 +09:00
priseborough 92b8c33b19 AP_NavEKF3: publish 3-state range beacon estimator states 2017-01-27 16:57:42 +09:00
priseborough 7c53573a0c AP_NavEKF3: Allow range beacon use with intermittent GPS 2017-01-27 16:57:42 +09:00
priseborough e5e4883c72 AP_NavEKF3: Fix GPS use inhibit interface documentation 2017-01-27 16:57:42 +09:00
priseborough c7e1828238 AP_NavEKF3: improve variable name 2017-01-27 16:57:42 +09:00
murata 32b60432b4 AP_Baro: Add format specification. 
AP_Baro: Add format specification.
 2017-01-27 18:20:22 +11:00
murata 37a55c38a1 StorageManager: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 9de6318b77 PID: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 4a60850558 GCS_MAVLink: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 474569c91b GCS_Console: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 81ef065c53 AP_RPM: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 17c62ffe4c AP_RangeFinder: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 59454b0c6f AP_Param: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 60b63bb69e AP_Parachute: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 77c402556b AP_OpticalFlow: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 3ce2ca488a AP_Notify: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 2d32211c81 AP_Mount: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 92eb179acf AP_Motors: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 9481e0d158 AP_Mission: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata aa3fb830af AP_Menu: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 0733d760f6 AP_HAL_VRBRAIN: Unify from print or println to printf. 
AP_InertialSensor: Unify from print or printin to printf.
 2017-01-27 18:20:22 +11:00
murata 67fdbf5c2d AP_HAL_SITL: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 3200f24106 AP_GPS: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 37873717de AP_Declination: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 50eead63cc AP_Common: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata f18b8844bf AP_BattMonitor: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 78a4cab06b AP_Baro: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 743d6e6db4 AP_Airspeed: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 836c8aa684 RC_Channel: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 9b1dadd93e AP_HAL_PX4: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 5e11497332 AC_PID: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 1b2ea27a68 DataFlash: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 30bbe7abb6 AP_HAL_Linux: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata ec4cce15a1 AP_Math: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 2643e7e906 AP_InertialSensor: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata 03bf57219b AP_HAL: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
murata af47a8e91c AP_Compass: Unify from print or println to printf. 2017-01-27 18:20:22 +11:00
Lucas De Marchi a73c1daa2e AP_HAL: Device: remove unused function to read registers 
Callers can use be16toh(), be32toh(), etc. There's no need to have a
special function here for each type.
 2017-01-26 23:18:27 -08:00
Lucas De Marchi f6a4a4dbe8 AP_Airspeed: MS5525: use common macros to deal with endianness 
Instead of calling a special method in the device, just use be16toh()
which is implemented for all platforms in our special sparse-endian.h
file. It has the advantage of using a special type for different
endianness and makes no assumption we are running on LE.
 2017-01-26 23:18:27 -08:00
Lucas De Marchi 14519e90ff AP_HAL: Device: remove trailing whitespaces 2017-01-26 23:18:27 -08:00
mirkix 2f8452b8a6 AP_Notify: Add BeagleBone Blue 2017-01-26 23:15:52 -08:00
mirkix 6d99bb0937 AP_HAL_Linux: Add BeagleBone Blue to GPIO_BBB 2017-01-26 23:15:52 -08:00
mirkix 954267fc22 AP_HAL_Linux: Add BeagleBone Blue to RCInput_AioPRU 2017-01-26 23:15:52 -08:00
mirkix d16ab890e8 AP_HAL_Linux: Add BealgeBone Blue 2017-01-26 23:15:52 -08:00
mirkix 093407e8e8 AP_HAL: Add BeagleBone Blue 2017-01-26 23:15:52 -08:00
Andrew Tridgell 848c03650b AP_RangeFinder: removed old PX4 rangefinder drivers 2017-01-27 18:12:20 +11:00
Andrew Tridgell 3b42289475 AP_RangeFinder: added doc listing for TrOneI2C 2017-01-27 18:11:29 +11:00
Andrew Tridgell 683e549ed7 AP_RangeFinder: added WHOAMI and crc check 
thanks to Francisco for review comments
 2017-01-27 18:11:29 +11:00
Andrew Tridgell 67a2441b12 AP_Math: started a set of crc functions 
these functions are often common between drivers
 2017-01-27 18:11:29 +11:00
Andrew Tridgell 68ff71e4c0 AP_RangeFinder: added trone in-tree driver 2017-01-27 18:11:29 +11:00
mirkix ad7e21b860 AP_HAL_Linux: fix compiler warning in AnalogIn_IIO 2017-01-26 23:05:46 -08:00
Randy Mackay 0ce8cf3cf4 AP_Notify: remove ToshibaLED_PX4 2017-01-27 15:24:09 +09:00
Randy Mackay 98db17e9a1 AP_Notify: example sketch uses ToshibaLED_I2C driver 2017-01-27 15:24:09 +09:00
Randy Mackay d8ae56f455 AP_Notify: pixhawk and vrbrain use in-tree ToshibaLED 2017-01-27 15:24:09 +09:00
Randy Mackay eedfe13f9c AP_Notify: fix ToshibaLED_I2C and check both I2C buses 
the rgb value was never being set meaning the led was always off
external bus is checked first
 2017-01-27 15:24:09 +09:00
Randy Mackay 0e20c8040c AP_Notify: rgbled methods protected and add override 
no functional change
 2017-01-27 15:24:09 +09:00
Randy Mackay 855125381d AP_Compass: relax compass cal fitness and consistency checks 2017-01-27 11:20:02 +09:00
Randy Mackay b5573f6665 AP_Notify: add PX4_V4 check to PixRacerLED 2017-01-27 11:01:17 +09:00
iseries1 4467a2cd16 AP_Notify: enable PixRacer onboard LED 
Enable PixRacer onboard LED to show status of flight controller
 2017-01-27 11:01:17 +09:00
Randy Mackay 8041a7f183 AP_Notify: add PixRacerLED 2017-01-27 11:01:17 +09:00
iseries1 e6a643f805 AP_HAL: define pixracer LED pins 2017-01-27 11:01:17 +09:00
murata 315f7c6a9a AP_Notify: Represent the base of ASCII numeric code with letters. 2017-01-26 23:59:11 +01:00
Tom Pittenger da48b24a5c AP_Landing: add logging as new "LAND" field 2017-01-26 13:11:45 -08:00
Tom Pittenger 644f75942b AP_Landing: refactor bool variables into flag stucts 2017-01-26 13:11:45 -08:00
Tom Pittenger bdafc2c025 AP_Landing: re/move complete flag into backend 
the complete flag was only ever true during FLIGHT_LAND_FINAL so we just check for that now instead
 2017-01-26 13:11:45 -08:00
Michael du Breuil 4cf1c74c62 AP_Landing + Plane: Check for land complete before requesting disarm 2017-01-26 13:11:44 -08:00
Tom Pittenger 2ccd91d88f AP_Landing: rename stage enum 2017-01-26 13:11:44 -08:00
Tom Pittenger 650e694eb1 Plane: move landing.reset to landing.do_land() 2017-01-26 13:11:44 -08:00
Tom Pittenger 61bc0a6206 Plane: check stage==LAND instead of landing.in_progress 2017-01-26 13:11:44 -08:00
Michael du Breuil 3e66dd10d7 Plane: Move landing stages inside AP_Landing and refactor 2017-01-26 13:11:44 -08:00
Michael du Breuil ac27241a42 AP_Vehicle: Remove unused flight stages 2017-01-26 13:11:44 -08:00
Michael du Breuil e9ec1d3a30 AP_Landing: Internalize the flight mode slope stages 2017-01-26 13:11:44 -08:00
Tom Pittenger b570c11e26 AP_Landing: allow separate handling for verify_land() vs verify_abort() 2017-01-26 13:11:43 -08:00
Tom Pittenger bf835c7aee AP_TECS: abstract out the landing stage checks 2017-01-26 13:11:43 -08:00
Tom Pittenger 6c0296ba13 AP_Landing: shadow copy of plane flight_stage into landing 
.. and describe stages without using specific stage name
 2017-01-26 13:11:43 -08:00
Tom Pittenger d1434602a5 AP_TECS: bug fix - use takeoff integrator during land abort 2017-01-26 13:11:43 -08:00
Francisco Ferreira 1fc0dbe0bd
AP_GPS: fix GSOF highest supported status 2017-01-26 00:04:32 +00:00
Michael Oborne 8e9f382240 AP_GPS_GSOF: update for new GPS_FIX's 2017-01-26 00:04:19 +00:00
Michael du Breuil 0cf41c9288 AP_GPS: Force ublox baud rate if we are allowed to config the GPS 2017-01-26 07:48:22 +09:00
Mathieu OTHACEHE 7c96f8e6a2 AP_HAL_Linux: rename APM to ardupilot. 
This rename should have happened here:
fdb2a9c99b but was forgotten.
 2017-01-25 16:57:47 +00:00
Andrew Tridgell 642e5aa5b7 SITL: match simulated tilt rate for CL84 to real vehicle 2017-01-25 19:01:15 +11:00
Michael du Breuil 855d91145a AP_GPS: ublox - fix incorrect step ordering 2017-01-25 03:44:57 +00:00
Michael du Breuil 1c1e6e9398 AP_GPS: Support more fix types 2017-01-25 03:44:42 +00:00
Michael du Breuil 9346117c01 Notify: Update for GPS types 2017-01-25 03:34:26 +00:00
Michael Oborne d05b0d5885 AP_GPS_UBLOX: add pvt message support 2017-01-25 03:34:26 +00:00
Randy Mackay 1300a9d3c6 AP_Notify: minor formatting fixes 
no functional change
 2017-01-23 15:07:21 -08:00
Randy Mackay 4691bc76f3 AP_Notify: display gets semaphore protecting display buffer 2017-01-23 15:07:21 -08:00
Randy Mackay 80c1433682 AP_Notify: Display backend methods become void 
We never use the return value so might as well remove it
 2017-01-23 15:07:21 -08:00
Randy Mackay cb1d1df03a AP_Notify: reorder flags 
This tiny improvement allows the flags above battery voltage to be squeezed into the same byte
 2017-01-23 15:07:20 -08:00
Randy Mackay e085ae1ec8 AP_Notify: add set_flight_mode_str method 
This allows the vehicle code to set a short string for the flight mode
 2017-01-23 15:07:20 -08:00
Randy Mackay acff67c718 AP_Notify: Display_SH1106 command stucture clarification 
renaming the elements of the structure makes their purpose more clear
 2017-01-23 15:07:20 -08:00
Randy Mackay fd365de5f8 AP_Notify: Display structures PACKED 2017-01-23 15:07:20 -08:00
Randy Mackay 843210cac2 AP_Notify: Display bus passed into contructor 2017-01-23 15:07:20 -08:00
Randy Mackay 682fc759f1 AP_Notify: minor formatting and comment changes 
No functional change
 2017-01-23 15:07:20 -08:00
Randy Mackay d12e0d6a82 AP_Notify: Display send_text made not static 2017-01-23 15:07:20 -08:00
Randy Mackay 07c08c09a3 AP_Notify: small change to Display health logic 2017-01-23 15:07:20 -08:00
Randy Mackay 847c68bf72 AP_Notify: remove comment 2017-01-23 15:07:20 -08:00
Randy Mackay 21a95a3b0a AP_Notify: Display screenpage variable made part of class 2017-01-23 15:07:20 -08:00
Randy Mackay c5ba54c3fe AP_Notify: adjust Display class structure 
This makes the display architecture closer to our other frontend/backend splits
Added check that display is initialised successfully in hw_init
Renamed _update_timer to just _timer to make more consistent with other drivers
 2017-01-23 15:07:20 -08:00
Randy Mackay 0690315814 AP_Notify: remove unused methods and member from Display 2017-01-23 15:07:20 -08:00
Randy Mackay f0c6fd3038 AP_Notify: resolve compiler warning in Display 2017-01-23 15:07:20 -08:00
Randy Mackay 9eb6d18d8e AP_Notify: add override to display methods 2017-01-23 15:07:20 -08:00
kozinalexey ed4115c4e3 AP_Notify: Support for OLED display by Alexey Kozin 2017-01-23 15:07:20 -08:00
Andrew Tridgell 4687785185 AP_Param: fixed a bug in default file handling 
this fixes a bug in how default file values are handled that affects
any common sub-objects. When we had a default value for something like
SERVO12_FUNCTION then configured_in_defaults_file() would return true
for SERVO1_FUNCTION as it shares a common default value pointer

this changes the implementation to use the object pointer instead
 2017-01-24 09:50:25 +11:00
Andrew Tridgell 33a84624c6 AP_AHRS: use const reference 
save a bit of stack and CPU
 2017-01-23 21:36:34 +11:00
Julien Beraud c31522c2c3 AP_HAL_Linux: fix focal lengths calculation 
Fixed focal length on bebop due to wrong spec.
Fix comment that had a typo.
Fixed focal length calculations on other boards that were mislead
by the typo.
 2017-01-23 21:23:16 +11:00