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14215 Commits

Author SHA1 Message Date
priseborough 416eaf4633 AP_NavEKF: Apply single definition of using optical flow 2014-12-06 18:16:50 +11:00
priseborough b56b68ce10 AP_NavEKF: Add public method reporting horizontal speed limit 
This is required if using optical flow, as depending on height, the speed must be limited to prevent the sensor saturating
 2014-12-06 18:16:50 +11:00
priseborough c8fb376cc4 AP_NavEKF: Fix bug in bias rate of change limiting 
This doesn't change the behaviour, but means the result is achieved using the correct parameters, and comments are consistent
 2014-12-06 18:16:50 +11:00
priseborough 599e53f3f2 AP_NavEKF: Prevent flow scale factor updating on ground 2014-12-06 18:16:49 +11:00
priseborough 083e22966c AP_NavEKF: Add public method to report available output data 2014-12-06 18:16:49 +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 e53d28854e AP_NavEKF: Add public method to inhibit GPS use and clean-up GPS use logic 
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 8fb1d9cf8d AP_NavEKF: Fix bug preventing opt flow scale factor estimation 
Also removes un-used variable declarations
 2014-12-06 18:16:49 +11:00
priseborough a78920761c AP_NavEKF: Update comments in flow data interface 2014-12-06 18:16:49 +11:00
priseborough 063fb41748 AP_OpticalFlow: Add separate scale factors for X and Y axis. 
The resolution is also increased to take advantage of the planned introduction of automated calibration methods
 2014-12-06 18:16:49 +11:00
priseborough 52c7e56a4a AP_NavEKF: Add parameter for max valid optical flow rate magnitude 2014-12-06 18:16:49 +11:00
priseborough 6f8971d80a AP_NavEKF: Speed up flow sensor gyro bias correction 2014-12-06 18:16:49 +11:00
priseborough d7ad45ebda AP_NavEKF: Don't fuse flow measurements if too big 2014-12-06 18:16:49 +11:00
priseborough 2dff76394d AC_PosControl: Add spike and noise filter to demanded angles 
This has been done to provide a smooth psotion hold when using an optical flow aided EKF which can be noisy.

Signed-off-by: priseborough <p_riseborough@live.com.au>
 2014-12-06 18:16:49 +11:00
priseborough 84944fdd4e AP_NAvEKF: Revert back to 10Hz fusion 2014-12-06 18:16:49 +11:00
priseborough f4f0dfc45c AP_OpticalFlow: efficiency improvements to data processing 2014-12-06 18:16:49 +11:00
priseborough 1f78a73cdb AP_NavEKF: Make flow measurement delay vehicle specific 
This takes into account the inter-sampling delay between the flow driver and the APM software which depends on the rate at which the dirver is being checked. This is 50Hz for plane and rover, and 200Hz for Copter.
 2014-12-06 18:16:49 +11:00
priseborough f23722ecee Plane: Remove statement about flow driver rate in comment 2014-12-06 18:16:48 +11:00
priseborough 5f941655a8 AP_NavEKF: changes to support to 20Hz flow fusion rate 2014-12-06 18:16:48 +11:00
priseborough 715d64dce9 Copter: Check for new optical flow updates at 200Hz 
Supports use of higher flow read rates if required.
 2014-12-06 18:16:48 +11:00
priseborough ca53d5fb62 Plane: Increase rate at which optical flow sensor is checked 
The sensor driver runs asynchronously at 10Hz, so needs to be checked frequently for arrival of data.
 2014-12-06 18:16:48 +11:00
priseborough 468c83c074 Copter : Check for new optical flow readings every 10ms 
The driver polls the sensor asynchronously every 100 msec, so we need to continually check for new data.
 2014-12-06 18:16:48 +11:00
priseborough 0bf991eef9 AP_NavEKF: Fix bug in optical flow fusion smoothing 2014-12-06 18:16:48 +11:00
priseborough 7d27a22f77 DataFlash : Fix EKF optical flow logging bug 2014-12-06 18:16:48 +11:00
priseborough 7ec8dfebcf AP_OpticalFlow : Remove gyro scale factor user adjustable parameter 
No longer required because bug in flow sensor has been fixed.
 2014-12-06 18:16:48 +11:00
priseborough 898ad7432b Plane : Only build optical flow with PX4 board 
Fixes SITL compile errors
 2014-12-06 18:16:48 +11:00
priseborough be54f2d6ee Copter : Don't force pre-compiler inclusion of optical flow 2014-12-06 18:16:48 +11:00
priseborough 2baa1e56ed Dataflash : Fix bug in EKF opt flow logging 2014-12-06 18:16:48 +11:00
priseborough df59f3311a AP_OpticalFlow : Add gyro scale factor correction parameter 2014-12-06 18:16:48 +11:00
priseborough eec49ce1dd AP_OpticalFlow : Add parameter for flow rate scale factor correction 2014-12-06 18:16:48 +11:00
priseborough 2500f7e9c2 Plane : Add data logging for optical flow use with EKF 2014-12-06 18:16:48 +11:00
priseborough 2db9247117 Plane : Add logging and EKF read for updated flow sensor interface 2014-12-06 18:16:47 +11:00
priseborough 6d5fb33d1a Copter : enable optical flow by default 2014-12-06 18:16:47 +11:00
priseborough 45c007d216 Copter : Correct comment on required optical flow update rate 2014-12-06 18:16:47 +11:00
priseborough 839b814d12 AP_NavEKF : Inhibit flow and range fusion in static mode 2014-12-06 18:16:47 +11:00
priseborough 9b9934ac06 AP_NavEKF : fix velocity timeout bug during optical flow operation 2014-12-06 18:16:47 +11:00
priseborough cc8e6dbfad DataFlash : Add EKF additional fault and timeout logging 2014-12-06 18:16:47 +11:00
priseborough 517026980b AP_NavEKF : Add fault and timeout logging 2014-12-06 18:16:47 +11:00
priseborough f640ec30ff AP_NavEKF : Reset held velocity on arming 
This held velocity is used to constrain the drift in the optical flow solution before the vehicle is high enough for the optical flow sensor to work.
 2014-12-06 18:16:47 +11:00
priseborough 4616721b0d DataFlash : Update EKF debug logging 2014-12-06 18:16:47 +11:00
priseborough 06c19a3a4d AP_NavEKF : Update optical flow debug logging 2014-12-06 18:16:47 +11:00
priseborough 1791dec622 AP_NavEKF : Fix velocity hold mode 2014-12-06 18:16:47 +11:00
priseborough 84421e0a35 AP_NavEKF : Adjust initial flow scale factor and limits 2014-12-06 18:16:47 +11:00
priseborough 573633daf7 AP_NavEKF : Fix incorrect use of flow sensor time-stamp 
flow sensor time stamp is now issued by the flow sensor and is on a different time-base
 2014-12-06 18:16:47 +11:00
priseborough 92e9336fe1 AP_OpticalFlow : prevent divide by zero 2014-12-06 18:16:47 +11:00
priseborough 9ea97c1a38 AP_NavEKF : Modify optical flow data interface 
Sign conventions have changed
 2014-12-06 18:16:46 +11:00
priseborough a72b6b179b Copter : Modify EKF optical flow data interface 2014-12-06 18:16:46 +11:00
priseborough 311206017c Copter : Update EKF optical flow data interface 
Makes it compatible with the new PX4Flow interface
 2014-12-06 18:16:46 +11:00
priseborough 8faeb190de AP_NavEKF : Rework logic to cope with bad flow data 2014-12-06 18:16:46 +11:00
priseborough 44e1695d5a AP_AHRS : Enable EKF start without GPS 2014-12-06 18:16:46 +11:00