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824 Commits

Author SHA1 Message Date
Paul Riseborough
f67f6b01f4 AP_AHRS: Publish the EKF position and velocity reset deltas 2015-10-30 12:24:05 +09:00
Caio Marcelo de Oliveira Filho
f7c73fbb13 AP_AHRS: remove AHRS_EKF_USE_ALWAYS define 
This option now is passed when instantiating the code in ArduCopter, so
selecting the default value at compile time is not necessary anymore.

The motivation is to move vehicle specifc code out of the general
libraries. This patch shouldn't change behavior.
 2015-10-21 11:01:11 +11:00
Caio Marcelo de Oliveira Filho
9d2e3157fe AP_AHRS: add a runtime flag for always using EKF 
The AHRS_EKF_USE_ALWAYS define is used to force EKF to be always
used. It is defined only for building ArduCopter. Change it to be a
runtime flag. Keep its default value still based on the original define,
once the Copter uses it the define will be removed.

The motivation is to move vehicle specifc code out of the general
libraries. This patch shouldn't change behavior.
 2015-10-21 11:01:10 +11:00
Caio Marcelo de Oliveira Filho
e87db31149 AP_AHRS: remove unused define 
AHRS_EKF_USE_DEFAULT is not used since commit
7ba45444a2 "AP_AHRS: added selection of
EKF type using AHRS_EKF_TYPE".
 2015-10-21 11:01:10 +11:00
Caio Marcelo de Oliveira Filho
9b73fcb6f8 AP_AHRS: remove unnecessary includes in the example 2015-10-21 09:16:11 +11:00
Caio Marcelo de Oliveira Filho
ec52df991c build: compile only the HAL files needed by the board 
Instead of requiring every program to specify the HAL related modules,
let the build system do it (in practice everything we compiled depended
on HAL anyway). This allow including only the necessary files in the
compilation.
 2015-10-21 09:16:07 +11:00
Caio Marcelo de Oliveira Filho
2e464a53c2 AP_HAL: make code not depend on concrete HAL implementations 
The switching between different AP_HAL was happening by giving different
definitions of AP_HAL_BOARD_DRIVER, and the programs would use it to
instantiate.

A program or library code would have to explicitly include (and depend)
on the concrete implementation of the HAL, even when using it only via
interface.

The proposed change move this dependency to be link time. There is a
AP_HAL::get_HAL() function that is used by the client code. Each
implementation of HAL provides its own definition of this function,
returning the appropriate concrete instance.

Since this replaces the job of AP_HAL_BOARD_DRIVER, the definition was
removed.

The static variables for PX4 and VRBRAIN were named differently to avoid
shadowing the extern symbol 'hal'.
 2015-10-21 09:16:07 +11:00
Andrew Tridgell
79d85f7e10 AP_AHRS: wait for up to 10 samples to get a valid accel vector 
the initial accel vectors can be invalid
 2015-10-21 09:09:11 +11:00
Andrew Tridgell
eac91430a2 AP_AHRS: update _dcm_attitude() on reset() 
this prevents the roll/pitch being overwritten by the AHRS_NavEKF
update code on next update
 2015-10-21 08:58:30 +11:00
Jonathan Challinger
c35605fa04 AP_AHRS_DCM: align tilt during initialization 2015-10-21 08:34:02 +11:00
Paul Riseborough
0722ebe8a0 AP_AHRS: Add EKF variance checks 2015-10-20 15:21:38 +11:00
Paul Riseborough
ae830b44c4 AP_AHRS: Make EKF2 PosDownDerivative interface follow coding conventions 
Updates arising from peer review.
 2015-10-20 15:21:37 +11:00
Paul Riseborough
e8037f94ad AP_AHRS: Make EKF2 PosDownDerivative interface follow coding conventions 
Updates arising from peer review
 2015-10-20 15:21:37 +11:00
Paul Riseborough
58d57994f4 AP_AHRS: Rectify coding errors found during peer review 
Fixes code that didn't take into account fall-through behaviour of C++ switch statements
Makes get_rigin furnction more generic allowing the consumer to decide what to do with an invalid origin
 2015-10-20 15:21:36 +11:00
Paul Riseborough
e65ae51564 AP_AHRS: Enable AP_InertialNav to access all EKF functions via AP_AHRS 
This patch adds additional methods to the the AHRS library so that the AP_InertialNav library dow nto have to access the EKF directly. This enables Copter to fly using the EKF nominated by AHRS_EKF_TYPE.
It will also pave the way to elimination of the AP_InertialNav library.
 2015-10-20 15:21:36 +11:00
Gustavo Jose de Sousa
84f811fe76 AP_AHRS: use compass get_{field,offsets}() functions 
Both functions are equivalent, so we're going to simply use
get_{field,offsets}() instead of get_{field,offsets}_milligauss().
 2015-10-15 19:56:00 +09:00
Andrew Tridgell
232fc8a64d AP_AHRS: added send_ekf_status_report() 2015-09-29 10:58:54 +10:00
Randy Mackay
9f59b6f7b5 AP_AHRS: getLastYawResetAngle returns reset time 2015-09-24 16:57:41 +09:00
Andrew Tridgell
06c0ad987e AP_AHRS: fixed divide by zero in SITL 
fixes issue#2875
 2015-09-24 16:49:22 +10:00
Paul Riseborough
f77bdd90fc AP_AHRS: Update EKF2 data logging 2015-09-24 12:58:44 +10:00
Andrew Tridgell
dde8330077 AP_AHRS: rename using_EKF to active_EKF_type() 
thanks to Randy for the suggestion
 2015-09-23 17:53:44 +10:00
Andrew Tridgell
f9348887c5 AP_AHRS: added getLastYawResetAngle() and resetHeightDatum() 2015-09-23 17:46:51 +10:00
Andrew Tridgell
0677c2c80c AP_AHRS: run astyle for formatting 2015-09-23 17:31:00 +10:00
Andrew Tridgell
13f72e5ba9 AP_AHRS: expose EKF2 for logging 2015-09-23 12:09:36 +10:00
Andrew Tridgell
7ba45444a2 AP_AHRS: added selection of EKF type using AHRS_EKF_TYPE 2015-09-23 11:57:18 +10:00
Andrew Tridgell
ed25c85d21 AP_AHRS: added NavEKF2 to constructor 2015-09-23 11:56:42 +10:00
Randy Mackay
b5e1ad89b3 AHRS: remove INS start style from example sketch 2015-09-21 17:06:23 +09:00
Grant Morphett
b2751d876c AP_AHRS: Fixed spelling error in parameter desc. 2015-09-16 09:33:30 +09:00
Staroselskii Georgii
4b948f5bb1 AP_AHRS: make DCM use milligauss 2015-09-09 10:38:16 +10:00
Andrew Tridgell
c18c6d894e AP_AHRS: added prearm_failure_reason() 2015-09-08 15:50:22 +10:00
Randy Mackay
a7569e3a61 AHRS_NavEKF: integrate INS use_accel 2015-08-19 16:44:22 +09:00
Randy Mackay
7f46cc9059 AHRS_DCM: integrate INS use_accel 2015-08-19 16:44:19 +09:00
Lucas De Marchi
b43bddc0af AP_AHRS: standardize inclusion of libaries headers 
Do the missing header changes due to changing the code before the pr
getting accepted.
 2015-08-18 17:12:51 +10:00
Gustavo Jose de Sousa
54d5277842 AP_AHRS: standardize inclusion of libaries headers 
This commit changes the way libraries headers are included in source files:

 - If the header is in the same directory the source belongs to, so the
 notation '#include ""' is used with the path relative to the directory
 containing the source.

 - If the header is outside the directory containing the source, then we use
 the notation '#include <>' with the path relative to libraries folder.

Some of the advantages of such approach:

 - Only one search path for libraries headers.

 - OSs like Windows may have a better lookup time.
 2015-08-11 16:28:42 +10:00
Andrew Tridgell
7e2e78c1af AP_AHRS: protect against zero deltat in DCM 
fixes issue #2657
 2015-08-05 15:21:00 +10:00
Randy Mackay
9067abc037 AHRS_NavEKF: fix blended accel to use primary accel 2015-08-01 17:19:45 +09:00
Andrew Tridgell
9c776736c1 AP_AHRS: use delta_velocity and delta_angle in DCM 
this prevents an aliasing effect by using the correct delta velocity
time value for each accelerometer sample used
 2015-07-30 11:04:31 +10:00
mirkix
d169fea9ec AP_AHRS: Add Linux support for example 2015-06-18 08:59:16 +10:00
Andrew Tridgell
edab50ab5a AP_AHRS: convert example from .pde to .cpp 2015-06-01 16:58:10 +10:00
Andrew Tridgell
04ba5fa0bd AP_AHRS: pass EKF into constructor 
this makes it possible for var_info in vehicle code to be in text
segment
 2015-06-01 16:16:24 +10:00
Andrew Tridgell
00ca493860 AP_AHRS: prevent a floating exception in update_trig 2015-05-27 22:10:39 +10:00
Andrew Tridgell
b61f7fa2f6 AP_AHRS: enable EKF by default on plane 
now we have arming checks enabled by default I think this is the best
choice
 2015-05-23 17:17:44 +10:00
Andrew Tridgell
7a76f72bf5 AP_AHRS: added uptime_ms() interface 2015-05-20 15:22:14 +10:00
Andrew Tridgell
5514a9f690 AP_NavEKF: base EKF decisions on vehicle class 
using the vehicle class rather than the build macros allows this to
work correctly in replay
 2015-05-19 15:21:22 +10:00
Andrew Tridgell
92daa15ccc AP_AHRS: on plane and rover make AHRS unhealthy when EKF not initialised 
planes and rovers need full absolute position from the EKF if the EKF
is going to be used. We don't want users to arm without full
capabilities
 2015-05-19 15:21:21 +10:00
Andrew Tridgell
29f0561ce4 AP_AHRS: reject EKF for plane when we have GPS and aren't fusing 
plane users would prefer to use GPS in this case
 2015-05-17 21:24:57 +10:00
Paul Riseborough
c2ac80cc63 AP_AHRS: Prevent copter from switching to DCM unless EKF has severe errors 2015-05-13 16:11:13 +09:00
Andrew Tridgell
3529e02675 AP_AHRS: if we have 3 gyros then only use first two 
the 3rd gyro on a PH2 has a lot more noise as it is not vibration
isolated
 2015-05-09 21:00:49 +10:00
Randy Mackay
3390d9932e AP_AHRS: fix example sketch 2015-05-09 12:23:05 +09:00
Peter Barker
463270e0ee AP_AHRS: avoid FPE when we don't have a compass reading 2015-05-05 15:02:35 +10:00
Andrew Tridgell
4d4a607b80 AP_AHRS: revert AP_Math class change 2015-05-05 13:27:05 +10:00
Tom Pittenger
20f47417d5 AP_AHRS: compiler warnings: apply is_zero(float) or is_equal(float) and float to doubles 2015-05-05 13:26:55 +10:00
Andrew Tridgell
e597575747 AP_AHRS: fix for HAL_SITL rename 2015-05-05 09:45:54 +10:00
Andrew Tridgell
6bfca648b9 AP_AHRS: raise DCM P gains when disarmed for first 20 seconds 2015-04-28 14:07:39 +10:00
Tom Pittenger
e28c555889 AHRS_DCM: fix compile warnings re float constants 
Also fix example sketch
 2015-04-24 12:26:08 +09:00
Paul Riseborough
7f1749dc1c AP_AHRS: Allow EKF to pull data from range finder object 2015-04-24 10:56:58 +09:00
Paul Riseborough
405862bd8f AP_AHRS: Reduce time delay for EKF initialisation 2015-04-23 20:35:52 +09:00
Paul Riseborough
5184bca87f AP_AHRS: Prevent DCM reporting good tilt error when inverted 2015-04-23 20:35:39 +09:00
Paul Riseborough
ea8217bd3a AP_AHRS: Reduce time constant on filtering of DCM error reporting 
Reduces time constant from 2 to 1 second to make data more useful for pre-flight alignment checks by the EKF
 2015-04-23 20:35:35 +09:00
Randy Mackay
6e30093924 AP_AHRS: correct sanity checks on update_trig 2015-04-23 09:45:43 +09:00
Jonathan Challinger
6a6ccb4f32 AP_AHRS: add sanity checks 2015-04-22 21:50:51 +09:00
Randy Mackay
c6f71ea2e0 AHRS: make get_error_rp and get_error_yaw const 2015-04-21 22:42:17 +09:00
Andrew Tridgell
a0969905ce AP_AHRS: make get_error_rp() and get_error_yaw() const 
this makes them usable by multiple consumers, and allows use by EKF
 2015-04-21 21:42:17 +10:00
Andrew Tridgell
d7249cc1e6 AP_AHRS: only use EKF for plane and rover if all data available 
we need position and velocity to be working for plane and rover
 2015-04-14 09:57:45 +10:00
Paul Riseborough
ff9917d338 AP_AHRS: Fix bug preventing EKF from initialising 2015-04-10 11:07:42 +09:00
Jonathan Challinger
dc5bdd5ad8 AP_AHRS: use filtered INS output to compute _accel_ef_blended 2015-04-09 20:19:56 +09:00
Paul Riseborough
d44cf14178 AP_AHRS : Publish EKF learned compass offsets 2015-04-03 15:24:47 -07:00
Andrew Tridgell
8ba043e593 AP_AHRS: fixed EKF startup bug 
This fixes the EKF for when GPS lock takes more than 10 seconds

fixes issue #2010
 2015-03-28 10:52:22 -07:00
Randy Mackay
98efcd5f03 AHRS: always use EKF for copter 2015-03-19 15:15:51 +09:00
Randy Mackay
7f25938834 AHRS: fix example sketch 2015-03-16 20:29:19 +09:00
Jonathan Challinger
f92c711d14 AP_AHRS: define AP_AHRS_TYPE to be the type of AHRS in use 2015-03-16 09:14:03 +11:00
Andrew Tridgell
585a105128 AP_AHRS: use compass->last_update_usec() 2015-03-14 12:31:50 +11:00
Andrew Tridgell
b488d6de00 AP_AHRS: fix for new compass API 2015-03-13 18:46:17 +11:00
Andrew Tridgell
031c81beee AP_AHRS: removed call to 1D accel cal 2015-03-12 12:50:29 +11:00
Andrew Tridgell
6781a8d329 AP_AHRS: fixed get_position for EKF to use correct relative altitude 
we need to use the EKF relative height plus the current AHRS home
 2015-02-21 10:12:53 +11:00
Jonathan Challinger
180c85817d AP_AHRS: remove armed state, use hal.util soft_armed state 2015-02-11 20:25:11 +11:00
mirkix
49d81a9c99 AP_AHRS: fix apm1 oilpan support 2015-02-11 18:22:39 +11:00
Randy Mackay
b66a1135d9 AHRS: fix example sketch compile error 2015-02-03 15:57:11 +09:00
Andrew Tridgell
ee9c778834 AP_AHRS: added a get_NavEKF_const() function 
needed for AP_Mount_MAVLink

Pair-Programmed-With: Paul Riseborough <p_riseborough@live.com.au>
 2015-02-03 09:49:16 +11:00
Andrew Tridgell
68f64fa11c AP_AHRS: make the healthy() method const 2015-02-01 14:13:52 +11:00
Randy Mackay
d8664d15d6 AHRS: fix example sketch 2015-01-28 17:15:35 +09:00
Andrew Tridgell
ed0a56cc3c AP_AHRS: cope with the changed semantics of airspeed.use() 2015-01-20 11:27:58 +11:00
Andrew Tridgell
d2c827aa4b AP_AHRS: updates for new AP_Baro API 2015-01-09 11:50:56 +11:00
Andrew Tridgell
b499cd1b59 AP_AHRS: fixed examples build 
using a relative include works as the object is just passed through,
not used, in this header
 2015-01-05 07:04:27 +11:00
Andrew Tridgell
70c2aeca42 AP_AHRS: make optflow available via AHRS 
same pattern as compass and airspeed sensor
 2015-01-03 14:16:34 +11:00
priseborough
5b8265ad6f AP_AHRS: Expand EKF speed limit public method to handle control limits 2014-12-06 18:16:50 +11:00
priseborough
83775554ea AP_AHRS: Publish EKF ground speed limit 2014-12-06 18:16:50 +11:00
priseborough
5532750a99 AP_AHRS: Add public method to inhibit GPS useage when using EKF 
This provides the calling vehicle software the abiity to request the EKF to not use GPS.
An integer is returned that indicates the type of operation available:
0 = request rejected (request will only be accepted if the EKF is in static mode, eg pre-armed)
1 = request accepted, attitude, vertical velocity and position estimates available
2 = request accepted, attitude, height rate, height, horizontal velocity and relative position estimates available
 2014-12-06 18:16:49 +11:00
priseborough
44e1695d5a AP_AHRS : Enable EKF start without GPS 2014-12-06 18:16:46 +11:00
priseborough
a4984a1e76 AP_AHRS : Add range finder health status to EKF optical flow data 2014-12-06 18:16:44 +11:00
priseborough
12b012a00e AP_AHRS : temporary mods to test use of flow sensor internal gyro data 2014-12-06 18:16:44 +11:00
priseborough
7b76fc29fb AP_AHRS : EKF optical flow fusion support preliminary changes 2014-12-06 18:16:44 +11:00
Randy Mackay
4452aa8448 AP_AHRS_DCM: compile error fix for low speed CPUs 
Also correct initialisatoin order to remove compiler warning
 2014-12-05 19:43:05 +09:00
Jonathan Challinger
9261dfdefb AP_AHRS_NavEKF: overload get_accel_ef and get_accel_ef_blended functions 2014-12-05 19:40:08 +09:00
Jonathan Challinger
4975cefd84 AP_AHRS_DCM: update _accel_ef_blended 2014-12-05 19:40:06 +09:00
Jonathan Challinger
033ee3c900 AP_AHRS: Add get_accel_ef_blended function 2014-12-05 19:40:04 +09:00
Randy Mackay
9e731550fd AHRS: default EKF on for copter 2014-12-01 17:29:39 +09:00
Andrew Tridgell
38c1b622f3 AP_AHRS: fixed example build on APM2 2014-11-28 17:59:18 +11:00
Andrew Tridgell
89cdae62b4 AP_AHRS: fixed example build 2014-11-28 10:40:52 +11:00
priseborough
2c07299c04 AP_AHRS : Add reset of EKF gyro bias states 2014-10-29 15:32:18 +09:00
Randy Mackay
dffcfb42bc AHRS: add reset_gyro_drift method 2014-10-28 20:25:33 +09:00
Andrew Tridgell
26de54c29a AP_AHRS: cope with 90 degree pitch in update_trig() 
this prevents a numerical error in Replay
 2014-10-25 11:21:04 +11:00
Andrew Tridgell
f79ce92673 AP_AHRS: fixed example build 2014-10-24 12:10:40 +11:00
Randy Mackay
39c8535223 AHRS_DCM: sanity check AHRS_RP_P and AHRS_YAW_P 2014-10-21 21:41:41 +09:00
Andrew Tridgell
270bac4472 AP_AHRS: make get_position() const 
This allows use from within AP_Mission
 2014-10-20 08:36:20 +11:00
Andrew Tridgell
4ad643b233 AP_AHRS: use a common function for updating the CD values 
this ensures the wrapping of yaw is consistent between the 3 use cases
 2014-10-15 13:18:08 +11:00
Andrew Tridgell
eec5cd5add AP_AHRS: restore DCM attitude before update() 
The DCM drift correction code uses the current attitude to calculate
error values to update its gyro drift correction. If we were using EKF
then without this patch the DCM code running as an alternative AHRS
source would be using the EKF attitude for calculating the error
value, leading to very bad gyro drift estimation
 2014-10-15 11:15:33 +11:00
Andrew Tridgell
63c06ea2af AP_AHRS: fixed calls to DCM in parent class 
use_compass() and reset() are common to AP_AHRS_DCM and
AP_AHRS_NavEKF. As AP_AHRS_NavEKF is a child of AP_AHRS_DCM, when we
call use_compass() from within AP_AHRS_DCM we actually end up calling
AP_AHRS_NavEKF::use_compass().

This has the effect of disabling the compass in DCM when EKF is active
and EKF has decided not to use the compass. That means that the DCM
yaw (and in fact the whole attitude) can get badly off while EKF is
enabled, making DCM an ineffective fallback if EKF fails.

The fix is to call the specific class versions of use_compass() and
reset()
 2014-10-15 10:12:50 +11:00
Andrew Tridgell
809b6cc855 AP_AHRS: added get_yaw_rate_earth() 
used to estimate course correction on takeoff
 2014-10-07 07:17:46 +11:00
Randy Mackay
85eee31510 AHRS: rename ekfNotStarted method to initialised 
Also created default implementation in AP_AHRS class so AP_AHRS_DCM does
not need to implement it.
 2014-10-02 14:40:54 +09:00
priseborough
7cea7c6a18 AP_AHRS : add method to report if EKF is waiting to start 2014-10-02 14:38:29 +09:00
priseborough
7370e07c8d AP_AHRS : Prevent EKF starting if GPS sats less than AHRS_GPS_MINSATS 2014-10-01 12:55:29 +10:00
Andrew Tridgell
e9a9e33280 AP_AHRS: use EKF use_compass() if EKF enabled 
this allows magfailed status to show on console via SYS_STATUS health
bits
 2014-08-24 21:00:56 +10:00
Randy Mackay
a6de3283b6 AHRS_DCM: init members to resolve compiler warnings 2014-08-14 11:27:31 +09:00
Andrew Tridgell
0f5b65e40e AP_AHRS: fixed example build 2014-08-13 21:46:04 +10:00
Przemek Lekston
ae4814a773 AP_AHRS_DCM.cpp: changed the direction of position projection to ensure correct behavious in crosswind 2014-08-07 12:34:30 +10:00
Andrew Tridgell
82d0666501 AP_AHRS: fixed example build 2014-07-25 17:54:04 +10:00
Andrew Tridgell
6a275372dd AP_AHRS: ensure get_position() fills in flags 2014-07-25 11:40:16 +10:00
Randy Mackay
d23b685023 AP_AHRS: add empty virtual destructor 2014-07-16 14:56:54 +09:00
Randy Mackay
1f2e38ed28 AHRS: initalise members to reduce compiler warnings 2014-07-16 14:38:26 +09:00
Andrew Tridgell
28fedba4d8 AP_AHRS: fixed gyro_bias sign, and pre-calculate gyro_estimate for EKF 
this allows us to return a constant vector for the corrected gyro
estimate. Based on discussions with Jon Challinger
 2014-07-13 21:56:39 +10:00
Jonathan Challinger
966d66ef40 AP_AHRS_NavEKF: use gyro drift states from EKF in get_gyro 2014-07-13 21:34:44 +10:00
Jonathan Challinger
61987f6655 AP_AHRS: Fixed DCM get_gyro function 
Previously incorporated the attitude correction terms into the return. Now only returns the drift-corrected gyro.
 2014-07-13 21:19:29 +10:00
Andrew Tridgell
d70bee9249 AP_AHRS: fix for HAL_GPIO_* 2014-06-02 10:42:36 +10:00
Andrew Tridgell
b3c1e515dc AP_AHRS: when no accel info available in buffer use current value 
this prevents an initialisation error, and is reasonable in flight too

Pair-Programmed-With: Paul Riseborough <p_riseborough@live.com.au>
 2014-05-15 22:19:54 +10:00
Andrew Tridgell
315290029a AP_AHRS: fixed check of accel sensor health 
we need to check health of each accelerometer separately
 2014-05-15 22:18:56 +10:00
Andrew Tridgell
1a05c27bbb AP_AHRS: added healthy() function 
this will be used to report when the AHRS subsystem becomes unhealthy
 2014-05-15 21:14:21 +10:00
Andrew Tridgell
c8c6e05a4a AP_AHRS: added vehicle class to AHRS 
used by EKF to control use of get_fly_forward()
 2014-04-21 18:13:12 +10:00
Andrew Tridgell
4d24a86088 AP_AHRS: prevent a infinity value 2014-04-21 15:37:07 +10:00
Andrew Tridgell
b7350118a6 AP_AHRS: enable EKF wind estimate with no airspeed sensor 
EKF can now estimate with IMU and GPS only

Pair-Programmed-With: Paul Riseborough <p_riseborough@live.com.au>
 2014-04-13 19:42:49 +10:00
Andrew Tridgell
27a3b5fb36 AP_AHRS: fixed wind reporting with EKF and no airspeed sensor 
the EKF does not estimate wind without an airspeed sensor
 2014-04-10 06:49:23 +10:00
Andrew Tridgell
35c111a63a AP_AHRS: fixed example build 2014-04-01 06:38:25 +11:00
Andrew Tridgell
f07e4dee52 AP_AHRS: convert to new GPS API 2014-04-01 06:38:24 +11:00
Andrew Tridgell
afab8a9c5b AP_AHRS: fixed example build 2014-03-19 12:14:02 +09:00
Randy Mackay
efd4058e8b AHRS: interate move of p1 from Location to mission cmd 2014-03-19 12:10:51 +09:00
Paul Riseborough
15a44571c2 AP_NavEKF : enable operation without a compass for planes 2014-03-09 20:01:45 +11:00
Andrew Tridgell
aaaae9a222 AP_AHRS: added get_fly_forward() method 
will be used to detect a copter
 2014-02-27 17:39:49 +11:00
Andrew Tridgell
9a5ecc9541 AP_AHRS: use primary accel for accel_ef 
Logs from Randy show that the copter INav code can't handle the
accelerometer sensor changing.
 2014-02-27 16:28:37 +11:00
Andrew Tridgell
b53496d470 AP_AHRS: choose the best accelerometer at each drift correction step 
this greatly reduces the impact of aliasing on accelerometers by
choosing the accelerometer that produces the smallest error term in
DCM. The difference can be quite dramatic on the Pixhawk.
 2014-02-27 09:41:28 +11:00
Andrew Tridgell
0b45d2bc06 AP_AHRS: removed the AHRS_GPS_DELAY parameter 
the best value has turned out to be 1, and tweaking it has not turned
out to be useful, so this simplifies the code in preparation for
adding the anti-aliasing handling with multiple accelerometers
 2014-02-27 08:57:44 +11:00
Andrew Tridgell
6fc5c12f1d AP_AHRS: remove unused variable 2014-02-26 10:28:12 +11:00
Jonathan Challinger
f321a5f241 AP_AHRS: Change airspeed_estimate to const in children of AP_AHRS 
Allows roll/pitch controllers to use DCM's airspeed estimate. Thanks to Kevin Hester for assistance in finding this.
 2014-02-25 18:49:16 +11:00
Paul Riseborough
9f3c19c03a AP_AHRS : change initialisation requirements for EKF and use dynamic method 2014-02-23 19:50:34 +11:00
Andrew Tridgell
b434c11215 AP_AHRS: removed empty file 2014-02-19 22:00:25 +11:00
Andrew Tridgell
3b1f9a4bbf AP_AHRS: added get_armed() and set_armed() calls 
will be used by NavEKF to determine static mode
 2014-02-19 10:52:24 +11:00
Andrew Tridgell
fad0b2b233 AP_AHRS: added get_correct_centrifugal() 
used by NavEKF to force static mode
 2014-02-19 10:28:14 +11:00
Andrew Tridgell
ee37bc3d27 AP_AHRS: ensure we have HAL_CPU_CLASS available 2014-02-16 17:57:09 +11:00
Randy Mackay
a021d0ca31 AHRS: fix compiler warning 2014-02-16 13:35:37 +11:00
Andrew Tridgell
be33a9634e AP_AHRS: move using_EKF to .cpp to make it easier in gdb 2014-02-15 09:25:40 +11:00
Andrew Tridgell
eedd88c2ec AP_AHRS: give zero lat/lng and baro alt if no position yet in DCM 2014-02-15 09:25:40 +11:00
Randy Mackay
5bdc564191 AP_AHRS: fix example sketch 2014-02-15 06:09:08 +11:00
Andrew Tridgell
801ceacaf2 AP_AHRS: re-run update_trig() after EKF AHRS update 2014-02-15 05:48:24 +11:00
Andrew Tridgell
25ef0d5a7b AP_AHRS: don't allow get_velocity_NED() and get_relative_position_NED() without EKF 
this avoids some linking issues, plus the functions are inaccurate
without EKF
 2014-02-15 05:48:24 +11:00
Andrew Tridgell
c62ccce9d8 AP_AHRS: make estimate_wind() public 
this avoids it linking into copter
 2014-02-15 05:48:24 +11:00
Andrew Tridgell
f09ae0c2d0 AP_AHRS: expose get_NavEKF as non-const 
better than having two methods
 2014-02-15 05:48:22 +11:00
Paul Riseborough
08267cea87 AP_AHRS: Scheduling for yaw gain to reduce atitude errors in turning flight 2014-02-15 05:48:22 +11:00
Paul Riseborough
b4171853b1 AP_NavEKF: allow initialisation before GPS lock to aid indoor testing 2014-02-15 05:48:21 +11:00
Paul Riseborough
0599817aa9 AP_AHRS : EKF initialisation changed to use bootstrap method 2014-02-15 05:48:21 +11:00
Randy Mackay
f068d0ff7e AP_AHRS_NavEKF: expose non-const EKF for tuning 2014-02-15 05:48:20 +11:00
Randy Mackay
9f130b40a0 AP_AHRS_NavEKF: override set_correct_centrifugal 2014-02-15 05:48:20 +11:00
Randy Mackay
8f6fd86f69 AP_AHRS: make set_correct_centrifugal virtual 2014-02-15 05:48:20 +11:00
Paul Riseborough
a87df0ad56 AP_AHRS : set NavEKF staticMode using call to set_correct_centrigual 2014-02-15 05:48:20 +11:00
Paul Riseborough
ab08a5c7d6 AP_AHRS : altered NavEKF set home to reset position instead of reset filter 2014-02-15 05:48:18 +11:00
Andrew Tridgell
574946f0aa AP_AHRS: start EKF 5 seconds after getting GPS lock 2014-02-15 05:48:17 +11:00
Andrew Tridgell
df271fbd59 AP_AHRS: fill in _dcm_matrix whenever EKF started 
this ensures get_dcm_matrix() always returns valid data
 2014-02-15 05:48:17 +11:00
Andrew Tridgell
ada7d4fb98 AP_AHRS: use the right DCM matrix when EKF not enabled 2014-02-15 05:48:17 +11:00
Andrew Tridgell
a74fcc5a93 AP_AHRS: added set_ekf_use() 2014-02-15 05:48:17 +11:00
Andrew Tridgell
5d43a1d704 AP_AHRS: added inertial nav interfaces to AHRS 2014-02-15 05:48:16 +11:00
Andrew Tridgell
392995ef84 AP_AHRS: make AHRS handle altitude 
AHRS now holds the home position
 2014-02-15 05:29:47 +11:00
Andrew Tridgell
1e476e511a AP_AHRS: pass baro into AP_AHRS 
first step in making AHRS handle altitude
 2014-02-15 05:29:47 +11:00
Andrew Tridgell
6e5077b60b AP_AHRS: removed unused AP_AHRS_HIL 2014-02-15 05:29:46 +11:00
Andrew Tridgell
84c7b0d7fd AP_AHRS: check for NavEKF health 2014-02-15 05:29:46 +11:00
Andrew Tridgell
b39a5062e9 AP_AHRS: use NavEKF for ground vector when available 2014-02-15 05:29:45 +11:00
Andrew Tridgell
b6bc50051f AP_AHRS: allow reporting of secondary AHRS solution 2014-02-15 05:29:45 +11:00
Andrew Tridgell
8c5cde4efd AP_AHRS: allow NavEKF to be enabled at runtime with AHRS_EKF_USE=1 2014-02-15 05:28:10 +11:00
Andrew Tridgell
7ac78ff991 AP_AHRS: create AP_AHRS_NavEKF class 
subclass of AP_AHRS_DCM, just a wrapper for now, will add EKF calls
next
 2014-02-15 05:28:09 +11:00
Andrew Tridgell
c7533579ac AP_AHRS: added get_airspeed() interface to AHRS 2014-02-15 05:28:07 +11:00
Randy Mackay
98d667c916 AHRS_HIL: call update_trig 2014-02-08 18:16:44 +09:00
Randy Mackay
6946d68318 AHRS_DCM: call update_trig 2014-02-08 18:16:42 +09:00
Randy Mackay
3dc6ea682c AHRS: add update_trig 
Calculates helper trig values including cos_roll, cos_pitch
 2014-02-08 18:16:39 +09:00
Paul Riseborough
f2c2811ef3 AP_AHRS & AP_Math: fixed bug in use of AHRS_TRIM parameters 2014-01-19 07:19:43 +11:00
Andrew Tridgell
a96840e194 AP_AHRS: changed default GPS lag to 1 sample 
this is based on detailed logs from a LEA-6H and NEO-7N
 2013-12-30 10:33:48 +11:00
Andrew Tridgell
410d356979 AP_AHRS: make airspeed_estimate const 2013-12-29 18:39:01 +11:00
Michael Day
e5addf86c1 AP_AHRS: Added getters for compass and GPS. 2013-12-11 17:29:14 +11:00
Andrew Tridgell
baa4ecc2ea APA_AHRS: update for compass API change 2013-12-09 17:34:07 +11:00
Andrew Tridgell
b248cc0868 AP_AHRS: fixed a build warning 2013-11-23 21:44:56 +11:00
Andrew Tridgell
710d5119b5 AP_AHRS: added attitude_reset() method for HIL_SENSORS 2013-11-23 19:29:23 +11:00
Andrew Tridgell
6ed493b10f AP_AHRS: added attitude_reset() method for HIL_SENSORS 2013-11-23 18:50:56 +11:00
Andrew Tridgell
4f871c87f1 AP_AHRS: detect and try to cope with bad accels 2013-11-07 13:54:16 +11:00
Andrew Tridgell
56bcda7252 AP_AHRS: lower default roll and yaw drift correction speed 
the gyros sustain accuracy over much longer time periods than
previously expected
 2013-11-05 14:52:39 +11:00
Andrew Tridgell
02d6f012ce AP_AHRS: added accel sum delay buffer to account for GPS lag 2013-11-04 21:21:42 +11:00
Andrew Tridgell
d31e557983 AP_AHRS: save memory and reduce pointer references 
use a refence for ins, and don't save gyro and accel between updates
 2013-11-04 21:21:37 +11:00
Andrew Tridgell
cb52b6f367 AP_AHRS: removed limit on normalisation of accel reference vectors 
this could lead to a bias in the accel drift correction
 2013-11-04 21:20:41 +11:00
Andrew Tridgell
31eaaada62 AP_AHRS: removed vertical G limit on GPS velocity correction 
this limit could lead to a bias in the accel drift correction, and is
frequenctly exceeded
 2013-11-04 21:20:41 +11:00
Andrew Tridgell
a7931b1581 AP_AHRS: fixed wrapping bug in GPS based heading error 
this bug could cause the GPS based yaw to use an expensive reset far
too often
 2013-11-04 21:20:41 +11:00
Andrew Tridgell
17b27a47de AP_AHRS: prevent GPS yaw resets on compass errors 
when we switch from compass heading to GPS heading we don't want to
trigger a sudden GPS yaw reset
 2013-11-04 21:20:41 +11:00
Andrew Tridgell
d305dd5946 AP_AHRS: debounce the GPS/compass consistency test 
we will only consider the compass inconsistent with GPS if it is off
for more than 2 seconds
 2013-10-23 09:40:42 +11:00
Andrew Tridgell
8ee848a788 AP_AHRS: update for Stub -> HIL 2013-09-28 22:04:15 +10:00
Randy Mackay
8306d74da0 AHRS: remove DMP as an ahrs 2013-09-27 10:42:46 +09:00
Andrew Tridgell
e1aa6e3ff1 libraries: fixed examples for no flash_leds() callback 2013-09-19 18:38:28 +10:00
Andrew Tridgell
15a4582ed7 AP_AHRS: changed to AP_Vehicle.h 2013-09-13 11:46:10 +10:00
Andrew Tridgell
c044385fff AP_AHRS: added groundspeed() method 
this gives ground speed in m/s from GPS
 2013-09-09 18:04:41 +10:00
Andrew Tridgell
c56017d8f1 AP_AHRS: added in new orientations 2013-08-30 14:19:17 +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
6182571c21 AP_AHRS: fixed example build 2013-08-30 13:01:36 +10:00
Andrew Tridgell
587fb58720 AP_AHRS: fixed license text 
APM is under GPL, not LGPL
 2013-08-30 13:01:32 +10:00
Andrew Tridgell
57d2dd814d AP_AHRS: added get_position_lag() call 
provide position lag to libraries
 2013-08-13 12:07:35 +10:00
Andrew Tridgell
0d36832b82 AP_AHRS: use const reference not pointers for locations 
this makes life easier for the new AP_Mission library

Pair-Programmed-With: Brandon Jones <brnjones@gmail.com>
 2013-08-05 10:24:12 +10:00
Andrew Tridgell
ec73fadc45 AP_AHRS: added true airspeed support in AHRS 
use true airspeed for wind calculations, and allow other drivers to
ask for the current ratio
 2013-07-22 12:50:01 +10:00
Randy Mackay
0325ad5d0d AP_AHRS: use rotateXY for speed 
Saves 0.1ms at 100hz
 2013-07-20 18:00:36 +09:00
Andrew Tridgell
1bd6849d00 AP_AHRS: fixed example build 2013-07-15 14:10:17 +10:00
Andrew Tridgell
b721bcc129 AP_AHRS: removed get_roll_rate_earth() and get_pitch_rate_earth() 
these are not used any more
 2013-07-13 21:45:58 +10:00
Andrew Tridgell
086e8f80dc AP_AHRS: fixed spin rate gain conversion from degrees to radians 
fixes issue #433

Thanks Jurgen!
 2013-07-13 12:36:25 +10:00
Randy Mackay
7860d06b91 AHRS: typo fix for ORIENTATION param description 2013-07-10 14:56:48 +09:00
Andrew Tridgell
279f6d00f0 AP_AHRS: changes for GPS field changes 2013-07-10 14:04:22 +10:00
tobias
1bf135b36f AP_AHRS: make some more functions const 2013-07-08 12:07:50 +10:00
Randy Mackay
ded31582de AP_AHRS: add Roll90Yaw90 to parameter description 
Thanks to Rainer Walther for spotting this
 2013-07-07 13:06:40 -10:00
Andrew Tridgell
80e0f8044c AP_AHRS: added airspeed_sensor_enabled() function 2013-07-04 16:56:57 +10:00
Andrew Tridgell
7d42a0562d AP_AHRS: cope better with large GPS yaw changes 
this should cope better with bungee launches when using only GPS for
yaw.
 2013-06-25 12:44:26 +10:00
Andrew Tridgell
aaaa5247e3 AP_AHRS: make it possible to setup board orientation at runtime 2013-06-03 16:52:28 +10:00
Andrew Tridgell
e75253d019 AP_AHRS: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell
14628990e6 AP_AHRS: make wind estimation configurable 
rover doesn't want it
 2013-05-24 11:21:42 +10:00
Randy Mackay
b27ddf0f63 AP_AHRS: add parameter descriptions 2013-05-21 15:39:03 +09:00
Andrew Tridgell
c08c084191 AP_AHRS: added get_projected_position() 
this is used to project the position forward by the GPS lag
 2013-05-17 08:32:21 +10:00
Andrew Tridgell
a17b85c661 AP_AHRS: use vectors for ground vector complimentary filter 2013-05-13 11:27:55 +10:00
Andrew Tridgell
6f1cee6406 AP_AHRS: fixed position estimate with 2D fix or low satellite count 
we should still use the GPS for position fixes when we have a low
number of satellites, but we should stop using it for velocity
estimates and attitude correction.
 2013-05-07 10:52:14 +10:00
Randy Mackay
ceda7d26b0 AHRS: add correct_centrifugal and flags structure 2013-05-06 15:32:06 +09:00
Andrew Tridgell
38fc0e61c6 AP_AHRS: optimise yaw drift correction 
use new vector2 cross product, and factor out the z component of a dcm
mul_transpose() to reduce the number of floating point operations for
a yaw drift correction cycle
 2013-05-05 13:51:45 +10:00
Randy Mackay
ee2daf25b6 AHRS: perf improvement by caching declination vector 2013-05-05 12:58:43 +10:00
Andrew Tridgell
943a1d8c8d AP_AHRS: added AHRS_GPS_MINSATS option 
if the number of visible satellites is below AHRS_GPS_MINSATS then
don't use the GPS for acceleration correction for attitude
 2013-05-05 12:48:01 +10:00
Andrew Tridgell
811c2ccc11 libraries: fixes for AP_Baro_HIL 2013-05-02 15:09:05 +10:00
Andrew Tridgell
54b826a583 AP_AHRS: update for new compass API 2013-05-02 12:48:14 +10:00
Andrew Tridgell
ba83950fc4 libraries: replace constrain() with constrain_float() 
this makes the type much more obvious. Thanks to Tobias for the
suggestion.
 2013-05-02 10:25:40 +10:00
Andrew Tridgell
f5d6fb6216 AP_AHRS: added _kp gain reduction for catapult launch 
this should reduce the tendency of aircraft to nose down hard on
initial launch at high g
 2013-04-28 14:47:59 +10:00
Andrew Tridgell
fd2cd0d1c2 DCM: fixed formatting 2013-04-23 08:57:44 +10:00
jschall
610069e729 DCM: fixed airspeed bug 
we incorrectly went via the wind estimate when we had a working airspeed sensor
 2013-04-23 08:57:44 +10:00
Andrew Tridgell
014c9376e7 AP_AHRS: use const references where possible 2013-04-22 13:26:49 +10:00
Andrew Tridgell
7ad293e270 AP_AHRS: made a few methods const 2013-04-20 13:52:36 +10:00
Andrew Tridgell
a4d25f5a82 AHRS: removed AHRS_BARO_USE option 
this option has caused users too much trouble. The vertical velocity
is too noisy from the baro
 2013-04-15 10:52:31 +10:00
Andrew Tridgell
87b0fb05ce AHRS: changed default RP and YAW gain to 0.3 
this reduces the impact of hard acceleration on takeoff, and reduces
the impact of GPS lag

Note that this doesn't affect copters, as they override to 0.1
 2013-04-15 10:52:31 +10:00
priseborough
b63d0969b7 AP_AHRS: Addition of a first order complementary filter to AP_AHRS::groundspeed_vector 
Addition of a complementary filter to estimation of the ground velocity vector for use by the L1-nav
 2013-04-12 12:48:09 +10:00
Andrew Tridgell
05ecb8d8fa AP_AHRS: fixed functions that need to be virtual 
functions overridden in a child class need to be marked virtual, or
you get the parent class function
 2013-04-12 12:48:08 +10:00
Andrew Tridgell
ee81b0f729 AP_AHRS: added wind_correct_bearing() and groundspeed_vector() 
these are very useful for navigation libraries
 2013-04-12 12:48:08 +10:00
Andrew Tridgell
896fd52aa1 AP_AHRS: fixed functions that need to be virtual 
functions overridden in a child class need to be marked virtual, or
you get the parent class function
 2013-03-29 18:35:10 +11:00
Andrew Tridgell
8459da202c AP_AHRS: prevents compass flyaways for plane and rover 
this switches to the GPS for yaw if the compass has dragged us off by
more than 45 degrees from the GPS heading, and the wind speed is less
than 80% of the ground speed.
 2013-03-29 13:48:25 +11:00
Randy Mackay
24044dc0c4 AHRS: add support for GPS fix type 2D 2013-03-27 11:41:43 +09:00
Randy Mackay
3321db8dde AHRS: limit trim to 10 degrees 2013-02-19 18:50:57 +09:00
Andrew Tridgell
6119201307 AP_AHRS: ensure compass is non-NULL for set_board_orientation() 2013-01-17 17:23:34 +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
f644a356c9 AP_AHRS: document more rotation combinations 2013-01-13 17:32:48 +11:00
Andrew Tridgell
848fc3e32d AP_AHRS: added AHRS_ORIENTATION parameter 2013-01-13 17:32:48 +11:00
rmackay9
9e5861ccaf AP_AHRS: small fix to parameter comments 2013-01-02 16:08:38 +09:00
rmackay9
77331f6538 AP_AHRS: another attempt at updating the TRIM parameter descriptions 2013-01-02 15:47:59 +09:00
rmackay9
e6c10f4f0b AP_ARHS: add description to AHRS_TRIM parameters 2013-01-02 15:44:42 +09:00
Andrew Tridgell
374af1cd14 build: change from Arduino.mk to apm.mk 2013-01-02 17:29:37 +11:00
Andrew Tridgell
3ac3aeb1b1 AHRS: fixed build on ARM 2013-01-02 14:45:09 +11:00
Andrew Tridgell
583845cc17 ahrs fixup 2013-01-02 14:45:08 +11:00
Andrew Tridgell
1b0670e67c AHRS: fixup for ARM compiler 2013-01-02 14:45:08 +11:00
rmackay9
bd0e018ca0 ArduCopter: restore auto-trim method but now use AHRS.add_trim 2013-01-02 09:20:08 +11:00
rmackay9
1f7614929f AP_AHRS: save trim to eeprom when set_trim is called 2013-01-02 09:12:17 +11:00
rmackay9
1c08f176ea AP_AHRS: add get_accel_ef method to return earth frame accelerometer values for use in ArduCopter's inertial nav and accel based throttle 2013-01-02 09:11:25 +11:00
Andrew Tridgell
e282554035 AHRS: removed 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
Pat Hickey
eb530b86e8 move Arduino.mk to /mk/Arduino.mk 2012-12-20 14:52:35 +11:00
Andrew Tridgell
fc66f5594f AHRS: allow AHRS test to build with SITL 2012-12-20 14:52:34 +11:00
Andrew Tridgell
7d27e420ae AP_HAL: remove unnecessary Arduino.h includes 2012-12-20 14:52:30 +11:00
Andrew Tridgell
5c148153ac AP_AHRS: updates for new AP_Param API 2012-12-20 14:51:38 +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
8b6ad6d559 SITL: removed SITL_debug() 
not needed any more
 2012-12-20 14:51:36 +11:00
Andrew Tridgell
5840ded767 AHRS: removed constrain() defines 2012-12-20 14:51:34 +11:00
Andrew Tridgell
09e7b0b592 AHRS: removed unused variable 2012-12-20 14:51:34 +11:00
Pat Hickey
70f34656bc AP_AHRS: uart1 -> uartB fixup 2012-12-20 14:51:34 +11:00
Pat Hickey
9bf69d4e0d AP_AHRS: port to AP_HAL 2012-12-20 14:51:29 +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
rmackay9
24317e721b AC_PID, AP_AHRS: added descriptions to some parameters 2012-12-10 22:28:39 +09:00
Andrew Tridgell
51080d3e9e AHRS: update example for new ins interface 2012-11-30 07:15:19 +11:00
Andrew Tridgell
1dad9e4e94 AHRS: improved some more doc strings 2012-11-27 15:56:53 +11:00
Andrew Tridgell
eb1d5c2c68 AHRS: improved docs for AHRS_GPS_USE 
some people are setting this to zero to prevent jitter, which results
in their plane flying off into the distance and never coming back
 2012-11-27 15:41:52 +11:00
Andrew Tridgell
5a214acca3 AHRS: changed the docs for AHRS_YAW_P and AHRS_RP_P 
a user had set AHRS_YAW_P to zero. Make it clear that zero is not a
good value. MichaelO will change MP to give a warning for a value
below 0.1
 2012-11-19 22:50:05 +11:00
Andrew Tridgell
8561f08b2f AP_AHRS: prevent a large delta_t from affecting DCM solution 
this should fix large changes in attitude directly after arming
ArduCopter
 2012-11-13 15:33:10 +11:00
rmackay9
56f88821e9 AP_AHRS: fix example sketch 
AP_Airspeed: fix example sketch
AP_Baro: fix example sketch
AP_Declination: fix example sketch
AP_Math: fix example sketch
 2012-11-08 00:08:18 +09:00
rmackay9
83ae8e47be AP_AHRS: replace IMU with INS and add roll and pitch trim 2012-11-07 19:20:32 +09:00
Andrew Tridgell
fe47990dab AP_AHRS: removed the 6 sats min 
this would put us into dead-reckoning mode
 2012-11-06 14:26:49 +11:00
Andrew Tridgell
6a24bdec05 AP_AHRS: require at least 6 satellites to use the GPS for velocity 
logs of a recent flight show the velocity estimate can be very poor if
the GPS can see 5 satellites or less
 2012-11-05 20:07:37 +11:00
Andrew Tridgell
ea40432235 AP_AHRS: use GPS vertical velocity when available 2012-11-05 14:58:40 +11:00
rmackay9
9e3824a09b AP_AHRS: fix compile error in example sketch 2012-11-01 21:56:34 +09:00
Andrew Tridgell
00bf548f87 AHRS: limit wind speed estimate changes 
sudden yaw changes can cause bad wind estimates
 2012-10-11 11:51:24 +11:00
rmackay9
e33d314f1d AP_AHRS_MPU6000: resolve compiler warning re shadowing 2012-10-06 13:22:43 +09:00
rmackay9
670fcbb634 AP_AHRS_MPU6000: fixed yaw correction and added _secondary_ahrs parameter 
_secondary_ahrs parameter allows mpu6000 ahrs to runin parallel with DCM.
 2012-09-30 00:21:18 +09:00
rmackay9
8c6fd340d7 AP_AHRS: added scheduler parameter to init 
Required by the AP_AHRS_MPU6000 class which needs to disable timed processes that could interfere with it's communication with the mpu6000
 2012-09-29 13:51:21 +09:00
rmackay9
41fbb19cf5 AP_InertialSensor_MPU6000: replaced _cs_pin parameter with #define and saved 1 byte of memory 
Updated ArduCopter, ArduPlane and example sketches in AP_InertialSensor, AP_IMU and AP_AHRS libraries because they no longer need to pass in cs_pin to the constructor
 2012-09-28 19:21:59 +09:00
Andrew Tridgell
ccf8ba3ce9 DCM: limit the contribution of the baro to vertical acceleration 
limit to a max of 0.5g
 2012-09-20 17:34:32 +10:00
Andrew Tridgell
458a42654b DCM: disable use of baro for vertical accel by default 
this has caused problems with too many users
 2012-09-20 17:34:32 +10:00
Michael Oborne
94f956a0ca fix AP attitude hil - with randys help 2012-09-15 16:47:18 +08:00
rmackay9
1c9fe3b1b6 AP_AHRS: fix to allow example sketch to compile 2012-09-13 16:45:52 +09:00
Andrew Tridgell
fba1692d69 AHRS: added AHRS_BARO_USE parameter 
allow disabling of the use of the barometer for vertical acceleration
compensation
 2012-09-12 14:42:04 +10:00
Andrew Tridgell
de28cc8b28 AHRS: added AHRS_WIND_MAX option 
this allows APM to cope better with airspeed sensor failure, but
ensuring airspeed stays within AHRS_WIND_MAX of ground speed
 2012-09-08 11:37:07 +10:00
Andrew Tridgell
2be785899b AHRS: added airspeed_estimate() function 
this allows the APM code to use an airspeed estimate for navigation
 2012-08-25 17:49:26 +10:00
Andrew Tridgell
8b53f1272a AHRS: new functions to support APM_Control library 2012-08-22 12:42:37 +10:00
uncrustify
e17fcbd9cb uncrustify libraries/AP_AHRS/AP_AHRS_HIL.h 2012-08-21 19:19:51 -07:00
uncrustify
af588679b9 uncrustify libraries/AP_AHRS/AP_AHRS.h 2012-08-21 19:19:51 -07:00
uncrustify
8c0e4f3987 uncrustify libraries/AP_AHRS/AP_AHRS_MPU6000.h 2012-08-21 19:19:51 -07:00
uncrustify
bc80148c75 uncrustify libraries/AP_AHRS/AP_AHRS_DCM.h 2012-08-21 19:19:51 -07:00
uncrustify
31a4442904 uncrustify libraries/AP_AHRS/AP_AHRS_DCM.cpp 2012-08-21 19:19:51 -07:00
uncrustify
d6d7606c84 uncrustify libraries/AP_AHRS/AP_AHRS_HIL.cpp 2012-08-21 18:59:34 -07:00
uncrustify
9e4e08699d uncrustify libraries/AP_AHRS/AP_AHRS_MPU6000.cpp 2012-08-21 18:59:34 -07:00
uncrustify
6327305116 uncrustify libraries/AP_AHRS/examples/AHRS_Test/AHRS_Test.pde 2012-08-21 18:59:13 -07:00
Andrew Tridgell
6d28b3519f AHRS: removed AP_AHRS_Quaternion 
this AHRS backend is causing compiler errors with the Arduino build
environment on windows. The quaternion AHRS backend is currently not
being developed/supported anyway. We can resurrect it if someone wants
to start developing it again.
 2012-08-22 10:41:31 +10:00
Andrew Tridgell
2985de279f AHRS: fixed duplicate gps_use variable in DCM 2012-08-21 20:17:03 +10:00
Andrew Tridgell
134cd51d17 AHRS: moved var_info[] into top level AP_AHRS class 2012-08-21 15:58:09 +10:00
Andrew Tridgell
ac72db8f00 AHRS: added set_fast_gains() method 
this will be used by arducopter on the ground
 2012-08-21 15:38:06 +10:00
Andrew Tridgell
14cdbd36cb AHRS: check for bad values in the error before they can affect DCM 
this should fix the DCM renorm errors in autotest, probably caused by
bad climb rates
 2012-08-18 13:54:11 +10:00
Andrew Tridgell
d9cc967508 AHRS: force an extra read of the compass on startup 
the first read from the compass can be bad. This ensures we have a
good value when getting the initial AHRS yaw.

Thanks to Randy and Jason for the bug report!
 2012-08-17 17:57:39 +10:00
Andrew Tridgell
73dcbc24c3 Quaternion: we no longer support acceleration in the GPS driver 
remove the linear acceleration compensation code
 2012-08-15 20:07:53 +10:00
Andrew Tridgell
9b4b7997b6 AHRS: added ahrs.yaw_initialised() 
this allows the high level code to know if the AHRS driver has a
reliable yaw estimate
 2012-08-15 12:39:34 +10:00
Andrew Tridgell
48e275e22d AHRS: avoid a compiler bug in quaternion code 
Having _wind in the AP_AHRS class causes a register allocation error
when building the Quaternion code with some versions of avr-gcc. Quite
bizarre.
 2012-08-13 11:08:10 +10:00
Andrew Tridgell
19a5d11669 AHRS: use airspeed for wind in forward flight 
when not turning we can use the airspeed sensor directly to calculate
the wind speed.
 2012-08-12 10:54:25 +10:00
Andrew Tridgell
f5b7ae213c AHRS: added AHRS_GPS_USE parameter 
this allows for the GPS to be disables for position updates, which
allows for testing dead-reckoning
 2012-08-11 22:06:03 +10:00
Andrew Tridgell
779dacfd24 AHRS: added wind estimation code 
this allows us to estimate the wind while we have GPS lock, then use
that estimate in the long term dead reckoning
 2012-08-11 22:06:03 +10:00
Andrew Tridgell
af4071894e AHRS: added long-term dead-reckoning 
this uses airspeed (if available) or last GPS ground speed to update
our position estimate in AHRS
 2012-08-11 12:00:31 +10:00
Andrew Tridgell
f95b06a880 AHRS: make airspeed sensor available to AHRS 
this will be used for long term dead-reckoning
 2012-08-11 08:57:32 +10:00
Andrew Tridgell
b01907cf23 ACM: fixed HIL build 2012-08-11 08:34:16 +10:00
Jason Short
52b2aacf28 AHRS DCM: FOrmatting 2012-08-09 16:59:43 -07:00
Andrew Tridgell
898a5af692 AP_Param: update AHRS for new constructor syntax 2012-08-08 12:11:57 +10:00
rmackay9
0eaf427062 AP_AHRS_MPU6000: cleaning up compiler warning due to unused yaw_deltat variable 2012-07-28 16:23:25 +09:00
rmackay9
1b521a9f73 AP_AHRS: updated test sketch to allow use of MPU6000's DMP 2012-07-28 14:27:26 +09:00
rmackay9
dbe7c8ed1a AP_AHRS_MPU6000: first draft implementation of class that uses MPU6000's DMP to calculate attitude 2012-07-28 14:17:38 +09:00
rmackay9
b844bb7919 AP_AHRS: removed var_info from AP_AHRS class (moved to AP_AHRS_DCM) 2012-07-28 14:16:56 +09:00
rmackay9
468170b589 AP_AHRS_DCM: moved var_info to belong to AP_AHRS_DCM instead of AP_AHRS 2012-07-28 14:16:15 +09:00
Jonathan Challinger
9cd98e79dd AHRS: normalise GA_b before computing error vector only if too large 
When GA_b is small the direction of the vector is unreliable, so
normalising can exacerbate the error in the direction
 2012-07-23 17:16:50 +10:00
Andrew Tridgell
5f5ab9c07c AHRS: if we don't have gps correction enabled, zero the yaw correction 2012-07-20 17:21:04 +10:00
Andrew Tridgell
c937738732 AHRS: allow the gps/accelerometers to control yaw when rolled 
this solves a problem with yaw estimation when at high roll angles,
when the compass code becomes ineffective
 2012-07-20 11:50:04 +10:00
Michael Oborne
a469682b7b fix param config names 2012-07-14 15:34:15 +08:00
Andrew Tridgell
165604a55c AHRS: fixed HIL build 2012-07-10 18:02:05 +10:00
Andrew Tridgell
0f9fb2c64b AHRS: added AHRS_GPS_GAIN parameter 
this allows control of how much GPS velocity information is used in
doing centripetal correction in DCM
 2012-07-10 16:22:48 +10:00
Andrew Tridgell
302696951a AHRS: make the yaw independent drift correction optional and disable 
the new correction algorithm copes poorly with gyro drift, leading to
signification attitude errors in the face of drift
 2012-07-06 15:11:30 +10:00
Andrew Tridgell
8c5ef3e60f AHRS: only enable barometer for AHRS if it is smooth enough 
if we used less than 5 samples to compute the pressure then don't use
it for climb rate
 2012-07-05 16:29:21 +10:00
Andrew Tridgell
2cd6da2539 AHRS: only use GPS for yaw when compass is not being used 
this avoids having two competing controllers
 2012-07-05 13:00:46 +10:00
Andrew Tridgell
adfa97b6f8 AHRS: enable barometer for vertical velocity 
this re-enables the barometer for vertical velocity information
for drift correction, now that we have a better filter
on the climb rate
 2012-07-05 13:00:46 +10:00
rmackay9
faeda3713e AP_AHRS: removed DCM_test example sketch 
No longer required because it doesn't compile and is redundant anyway because the AP_AHRS_DCM class is tested in the AHRS_Test example sketch.
 2012-07-04 18:22:51 +09:00
Andrew Tridgell
3849ca8b5c AHRS: make DCM drift correction not rely on accurate yaw 
this uses a new formulation of the GPS based drift correction from
Bill Premerlani that rotates the error vector to avoid relying on
accurate yaw. This means we should get accurate roll/pitch correction
even with lots of magnetometer interference

It also makes it possible to fly a multicopter with no compass. It can
even navigate and correct yaw (slowly!)
 2012-07-04 17:00:40 +10:00
Andrew Tridgell
1314e4f872 AHRS: make P gain on PI roll/pitch controller tunable 
this is to make it easier for Craig and Alan to tune
 2012-07-04 12:42:46 +10:00
Andrew Tridgell
136c03c3c0 AHRS: include the P terms in get_gyro() 
this makes it more useful for navigation controllers
 2012-06-29 21:54:09 +10:00
Andrew Tridgell
16c55c64d4 AHRS: don't add the P terms in _omega 
this can lead feedback via the _P_gain()
 2012-06-29 15:10:51 +10:00
Andrew Tridgell
37fc6c46b9 AHRS: disable barometer for vertical acceleration 
this seems to have been the cause of the 'flips' seen by Marco and
others. Testing by Craig and Alan shows that the flips are gone when
the barometric acceleration is removed.

It looks like a 5 point average filter is not enough to keep the
vertical acceleteration noise low. With high noise in the z axes, the
x and y axes are scaled back when the ge vector is normalised.
 2012-06-28 11:12:49 +10:00
Andrew Tridgell
58c4d458dc AHRS: re-instate new DCM drift correction code 
This reverts commit 078489638d47fbaffde7c51249e36b5a8fc4ef9d.
 2012-06-28 11:09:22 +10:00
Andrew Tridgell
fd241692d0 AHRS: revert to the old drift correction algorithm 
we need to work out why Craigs quad flipped today before we enable
this new drift correction
 2012-06-27 18:16:41 +10:00
Andrew Tridgell
8e044a560b AHRS: include P term in omega 
thanks to Jon for suggesting this
 2012-06-27 16:01:50 +10:00
Andrew Tridgell
37e2f2ee2c AHRS: implement spin rate limits 
this follows the method that Bill developed in his fastRotations
paper. We've demonstrated that this is indeed needed in APM, as we
were able to produce the 'dizzy' effects in both the ArduPlane and
ArduCopter simulator
 2012-06-27 16:01:50 +10:00
Andrew Tridgell
e4a245179c AHRS: cope with copters with no compass 
if a copter doesn't have a compass, we can't use the GPS for gyro
drift correction
 2012-06-27 16:01:50 +10:00
Andrew Tridgell
3a41ad8e7c AHRS: normalize the ge vector in drift correction, and use barometer 
The normalisation ensures the error term scales uniformly with
different accelerations.

The barometer is used for vertical acceleration estimation
 2012-06-27 16:01:50 +10:00
Jonathan Challinger
d230690b7b AHRS: brought DCM more inline with Bill's implementation 
omega_I applied continuously. _ki larger. Stop integrating when _omega.length()>20

The key change was the scaling of ge to ensure the error is not
quadratic
 2012-06-27 16:01:49 +10:00
Andrew Tridgell
d4c8041c51 AHRS: first successful version of Bills new drift correction system 
This makes 3 major changes:

 1) fixes the scaling of the yaw drift correction term to fix the time
 constant

 2) don't integrate the mag vector over multiple readings

 3) accumulate omega_I changes over 15 seconds before applying, to try
 to prevent omega_I picking up short term responses
 2012-06-27 16:01:49 +10:00
Andrew Tridgell
4d08f75292 AHRS: update for new _fly_forward flag 2012-06-27 16:01:49 +10:00
Andrew Tridgell
0f5c22bd8e AHRS: implement Bills new drift correction algorithm 
this is an initial implementation of this paper:

  http://gentlenav.googlecode.com/files/RollPitchDriftCompensation.pdf
 2012-06-27 16:01:49 +10:00
Andrew Tridgell
52d77407d4 AHRS: added GPS support to AHRS test 2012-06-27 16:01:49 +10:00
Andrew Tridgell
f274df454a DCM: fixed a bug when using GPS for yaw correction 
When using GPS for yaw correction we need to apply the x and y omegaI
corrections from the _omega_I_sum in the period before we get to the
minimum ground speed for GPS yaw correction. Otherwise we get a large
sudden omega_I change on takeoff.
 2012-05-21 12:15:06 +10:00
rmackay9
6e1798b104 AP_AHRS: updated default AHRS_YAW_P to 0.2 (was 0.4) 
This reduces the compass's default authority over the yaw direction by half
 2012-04-30 17:29:45 +09:00
Adam M Rivera
3309dec205 AP_AHRS_DCM.cpp: Added comments that follow the new parse structure 2012-04-25 12:00:42 -05:00
Andrew Tridgell
2a3af369b6 DCM: buffer omega_I changes over 10 seconds 
this buffers up _omega_I changes in _omega_I_sum over a period of 10
seconds, applying the slope limit only when _omega_I_sum is
transferred to _omega_I.

The result is a huge improvement in the ability of _omega_I to track
gyro drift over the long term.
 2012-04-23 12:13:25 +10:00
Andrew Tridgell
f27d85cb8d DCM: drop the 'drop z' method 
the 'drop z' method reduced the impact of noise on omegaI, but it also
made us more sensitive to errors in accelerometer calibration and
scaling, as demonstated by the logs from Gabor here:

  http://diydrones.com/xn/detail/705844:Comment:834373

Simulation testing shows that the other noise suppression methods
applied in the DCM code, in particular the slope limiting on omegaI
the removal of the weighting and the upcoming use of a _omega_I_sum
buffer have reduced the impact of noise enough that we can now safely
include z in the acceleration calculation.
 2012-04-23 12:13:24 +10:00
Adam M Rivera
b500d9430f AP_AHRS_HIL.h: Fixed HIL build by adding missing public property. 2012-04-16 10:26:14 -05:00
Andrew Tridgell
8e90aeea4e AHRS: added AHRS_YAW_P parameter 
this allows users to change the yaw gain in DCM
 2012-04-16 20:55:13 +10:00
rmackay9
c96dfb2108 AP_AHRS - changed parameter order to remove compiler warning 2012-04-09 17:37:11 +09:00
Andrew Tridgell
b549b88e5e AHRS: fixed error_yaw reporting with 2 MAVLink connections 
when a user first connects with USB, and later switches to the
telemetry port without restarting we were getting zero for error_yaw
in the logs, as AHRS.get_error_yaw() was being called twice.

This ensures we give the last value after the counter is reset
 2012-03-29 12:39:53 +11:00
Andrew Tridgell
f4d1295a4b AHRS: fixed build of AHRS example 2012-03-22 23:00:45 +11:00
Andrew Tridgell
9e6c18cca4 AHRS: added missing AP_AHRS.h 2012-03-19 17:35:20 +11:00
Andrew Tridgell
4f82134a5e DCM: use the new rotate() method from AP_Math 
this allows us to use a tested and optimised rotation method
 2012-03-19 17:29:02 +11:00
Andrew Tridgell
c53b320e00 Quaternion: change signs in AP_AHRS_Quaternion 
thanks to Justin for the suggestion
 2012-03-19 17:29:02 +11:00
Andrew Tridgell
79b9be8b1a AHRS: fixup the AHRS test suite for the new framework 2012-03-19 17:29:02 +11:00
Andrew Tridgell
f8087d3c67 AHRS: adapt the quaternion library to AHRS 2012-03-19 17:29:02 +11:00
Andrew Tridgell
8dcf82b433 AHRS: adapt the DCM_HIL library to AHRS 2012-03-19 17:29:02 +11:00
Andrew Tridgell
d4bb068d5b AHRS: adapt the DCM library to the AHRS framework 2012-03-19 17:29:02 +11:00
Andrew Tridgell
9d75ffeba1 AHRS: rename DCM and Quaternion implementions ready for AHRS class 
this is the first step to creating a general AHRS class for ArduPilot
 2012-03-19 17:29:01 +11:00