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3598 Commits

Author SHA1 Message Date
Andrew Tridgell 80e0f8044c AP_AHRS: added airspeed_sensor_enabled() function 2013-07-04 16:56:57 +10:00
Paul Riseborough 5b0129e02b AP_TECS: first implemention of TECS altitude control library 2013-07-04 16:56:56 +10:00
Paul Riseborough 7bdb098e77 AP_Baro: added get_EAS2TAS() 
this provides the scaling factor between equivalent and true airspeed
based on altitude
 2013-07-04 16:56:56 +10:00
Andrew Tridgell 61361dac9b AP_Baro: added units to baro documentation 2013-07-04 16:56:56 +10:00
Paul Riseborough 3b98bbd159 AP_Baro: more precise altitude calculation on PX4 
if not using an AVR CPU then use a more computationally expensive
altitude calculation, which is more precise at higher altitudes
 2013-07-04 16:56:56 +10:00
Andrew Tridgell fff777bda2 MAVLink: update to latest upstream message defintions XML 
this adds new HIL support for airspeed, and common SIM_STATE and
RADIO_STATUS messages
 2013-07-01 15:38:45 +10:00
Andrew Tridgell 6b7b69a048 RC_Channel: added secondary rudder support 
this is used when nose wheel steering needs different reverse/range
from rudder
 2013-06-29 17:31:03 +10:00
Randy Mackay b16ce5e523 AVR I2C: bug fix 
Fix provided by both Jason Short and lucafedechen independently
 2013-06-28 07:09:05 -10:00
phokur b00e5d95c9 Update AnalogIn.cpp 
Fixed AnalogIn.cpp:42: undefined references

Full error msgs:
/cygdrive/c/MAVPRO~1/ardupilot/libraries/AP_HAL_Empty/AnalogIn.cpp:42: undefined reference to `Empty::EmptyAnalogSource::set_stop_pin(unsigned char)'
/cygdrive/c/MAVPRO~1/ardupilot/libraries/AP_HAL_Empty/AnalogIn.cpp:42: undefined reference to `Empty::EmptyAnalogSource::set_settle_time(unsigned short)'
 2013-06-26 23:22:08 -10:00
Craig@3DR 1a3ed2d80b AP_Compass: Corrected COMPASS_ORIENT Parameter Description 2013-06-26 19:14:24 -07:00
Randy Mackay 6cd18868c2 AirSpeed: fix example sketch compile error 2013-06-25 22:45:30 +09:00
Randy Mackay 20ed00dcc9 AP_InertialSensor: relax accel offset sanity check 2013-06-25 14:19:42 +09:00
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 169b5a30a5 AP_Camera: added CAM_TRIGG_DIST parameter 
for triggering every N meters of GPS distance travelled
 2013-06-25 12:44:26 +10:00
Andrew Tridgell 7902d57877 AP_Relay: added RELAY_PIN parameter 
makes it easier to choose a pin
 2013-06-24 22:39:18 +10:00
Paul Riseborough 2204b30e66 Plane: Added APM_Control integrator limits to table used to covert old PID values 2013-06-22 21:59:47 +10:00
Paul Riseborough 147856e73c APM_Control: Added integrator limiting adjustable by an advanced user parameter 
this is compatible with the old IMAX settings
 2013-06-22 21:55:27 +10:00
Paul Riseborough d8dab7b5c7 APM_Control: Pitch Control - Reduced the speed below which the integrator is locked 
This is to allow for slow speed flare manoeuvres in FBW modes
 2013-06-22 21:49:40 +10:00
Randy Mackay aa2b10f044 AP_Baro: TEMP parameter comment fix 2013-06-18 11:28:36 +09:00
Randy Mackay dde19c9585 WPNav: add acceleration parameter 
WP_ACCEL added to allow user control of acceleration during missions.
Loiter acceleration made to be half of loiter max speed
 2013-06-16 11:40:51 +09:00
Randy Mackay 272f0e5032 Copter: reduce twitch when entering CIRCLE mode 
Set loiter target and prev iterations velocity when circle mode is
started
Start circling from projected stopping point
 2013-06-15 18:18:30 +09:00
Andrew Tridgell d7d87f827e HAL_PX4: support voltage monitoring on multi-connector pin 5 2013-06-05 08:24:20 +10:00
Paul Riseborough 3ad35363be Plane : APM_Control : Removed scaler incorrectly applied to the integrator path 2013-06-04 18:09:06 +10:00
Andrew Tridgell f44f7308e8 AP_Param: we don't need to avoid writes in AP_Param now 
now handled in the HAL
 2013-06-04 14:02:49 +10:00
Andrew Tridgell 2316c3bd11 AP_HAL: make storage->write_block() take a const pointer 2013-06-04 14:02:13 +10:00
Andrew Tridgell 3c9d45d7d0 HAL_AVR: avoid writing bytes to EEPROM that are already correct 
this speeds up writing of waypoint data, reducing latency
 2013-06-04 13:33:41 +10:00
Andrew Tridgell 02252b5387 RC_Channel: removed reference to dip switches 2013-06-03 17:49:56 +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 45b385cf81 AP_RCMapper: improved docs for RCMAP_* 2013-06-03 16:28:05 +10:00
Andrew Tridgell c0058bbb03 RC_Channel: added output_trim() and read() functions 
these make using rcmap in the plane code easier
 2013-06-03 16:23:48 +10:00
Andrew Tridgell 033828aeb6 AP_Mount: make the code a bit easier to read 2013-06-03 16:23:48 +10:00
Andrew Tridgell 9076f6a1d0 AP_Mount: use RC_Channel::rc_channel() instead of rc_ch[] 2013-06-03 16:23:47 +10:00
Andrew Tridgell 0438952a8b RC_Channel: removed global rc_ch[] array 
hide it as a object static instead
 2013-06-03 16:23:47 +10:00
Randy Mackay e9594c8b80 RCMapper: simple mapping object for primary input channels 
allows arbitrary mapping of first 4 channels
 2013-06-03 16:23:47 +10:00
Andrew Tridgell 68adeb041d AP_Airspeed: support ARSPD_PIN option for choosing source 
this gives us support for arbitrary analog pins for the airspeed
sensor, plus support for the EagleTree airspeed driver on PX4
 2013-06-03 11:51:09 +10:00
Andrew Tridgell 26b7de668a AP_Param: fixed parameter save bug 
This bug affected parameters where the defaults are overridden in the
object constructor. For example, a PID object may have a default value
for PID_D of 0.0, but have a constructor based default of 0.2. If the
user tries to set the value to exactly 0.0, then the set wouldn't happen,
as the value matches the value in the object default var_info[]
table. 

This change ensures we force a save to eeprom if the value is changing
from the current value, regardless of the var_info[] default.

Thanks to Tom Coyle for finding this bug!
 2013-06-02 14:49:34 +10:00
Andrew Tridgell 05889391e5 APM_Control: cope with zero integrator or tconst 
if the user zeros the integrator tuning factor, we need to zero the
integrator
 2013-06-01 22:29:38 +10:00
Andrew Tridgell 512d3d811d APM_Control: neaten up code formatting 2013-06-01 22:29:38 +10:00
Randy Mackay 7a2afb7443 Copter Nav: add accessor for waypoint speed 2013-06-01 18:21:29 +09:00
Randy Mackay 8b87849acd Math: add wrap_PI 2013-06-01 18:21:29 +09:00
Andrew Tridgell c82caeeba1 HAL_AVR: configure analog inputs as INPUT without pullup 
not all pins were defaulting to this, which led to some strange
readings on some devices. First noticed by Andi on a LM335 temperature
sensor
 2013-06-01 12:19:02 +10:00
Randy Mackay 89bbf5844f Copter WPNav: remove unused variable 2013-05-31 21:41:32 +09:00
Randy Mackay 8c4a7ec094 Copter WPNav: Leonard's improved speed fix 
Also pass in althold gain from main code
 2013-05-31 21:03:27 +09:00
Andrew Tridgell 14c8c1bdfc APM_Control: tweak code layout and param descriptions 2013-05-31 17:24:55 +10:00
Randy Mackay 76028fc9d3 Copter Motors: use _min_throttle in output_test 2013-05-31 15:16:04 +09:00
Randy Mackay 28f2f87b26 Copter Motors: minor formatting change 2013-05-31 15:16:04 +09:00
Andrew Tridgell f4efa92d3b APM_Control: fixed parameter names 2013-05-31 15:31:25 +10:00
Andrew Tridgell 3e8af05d15 APM_Control: match parameter names with old PID controllers 
this will make upgrading easier
 2013-05-31 14:06:56 +10:00
Andrew Tridgell 53d3ce7d2c APM_Control: fixed some documentation (old parameter names) 2013-05-31 07:58:29 +10:00
Andrew Tridgell 38e414db33 AP_Progmem: fixed type of strncmp_P() 2013-05-31 07:58:29 +10:00
Andrew Tridgell ad2f6e1217 AP_Param: add support for converting between old and new parameters 
this allows for a conversion table between old parameters and new
parameters, making firmware upgrades with moved parameters much easier
for users
 2013-05-31 07:58:29 +10:00
Paul Riseborough 716c124f73 APM_control: Modified gain definitions for roll and pitch controllers so PID gains behave like previous servo PIDS 
Gain definitions in roll and pitch controllers were updated previously
so that the old PID tuning values could be transferred across.
Updated tuning guide for revised gain definition.
 2013-05-31 07:58:20 +10:00
Randy Mackay a1926441da Copter: use fast tan for accel to lean angle calcs 
Committed on behalf of Leonard
 2013-05-30 18:25:04 +09:00
Randy Mackay d81b7b507d Math: add Leonard's fast tan function 2013-05-30 18:24:32 +09:00
Randy Mackay d203f0295b Copter: bug fix for vertical speed during missions 2013-05-30 11:52:04 +09:00
Andrew Tridgell 3dcdc15201 AP_Navigation: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell ac2db516b4 APM_PI: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell 941a2c483a AP_LeadFilter: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell 86db955ac9 AP_L1_Control: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell 9da13f3775 AP_InertialNav: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell e391c34d1e AP_HAL_PX4: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell e2eca3e273 AP_HAL_AVR_SITL: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell 82aec0ef6c AP_Declination: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell 8f4d4465af AP_Curve: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell fb7ae8c764 AP_Camera: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell e75253d019 AP_AHRS: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell 8c25a504c3 AC_PID: fixed indent-tabs-mode 2013-05-30 09:54:53 +10:00
Andrew Tridgell 918a3d46f5 AP_Buffer: fixed indent-tabs-mode 2013-05-30 09:53:15 +10:00
Andrew Tridgell 6c5718a63b APM_Control: fixed indent-tabs-mode 2013-05-30 09:53:02 +10:00
Andrew Tridgell 933088b95a AP_Common: fixed indent-tabs-mode 2013-05-30 09:52:38 +10:00
Andrew Tridgell 4007b7b1e9 AP_Compass: fixed indent-tabs-mode 2013-05-30 09:52:30 +10:00
Andrew Tridgell edfebc1f29 AP_GPS: fixed indent-tabs-mode 2013-05-30 09:52:21 +10:00
Andrew Tridgell c92069644d AP_InertialSensor: fixed indent-tabs-mode 2013-05-30 09:52:12 +10:00
Andrew Tridgell c28ef033a2 AP_Limits: fixed indent-tabs-mode 2013-05-30 09:52:00 +10:00
Andrew Tridgell 5024da2695 AP_Math: fixed indent-tabs-mode 2013-05-30 09:51:51 +10:00
Andrew Tridgell 5fdf6ff4f7 AP_Menu: fixed indent-tabs-mode 2013-05-30 09:51:43 +10:00
Andrew Tridgell 81f7ae9108 AP_Motors: fixed indent-tabs-mode 2013-05-30 09:51:34 +10:00
Andrew Tridgell 1cc02836a0 AP_Mount: fixed indent-tabs-mode 2013-05-30 09:51:24 +10:00
Andrew Tridgell e69e4a5695 AP_RangeFinder: fixed indent-tabs-mode 2013-05-30 09:51:11 +10:00
Andrew Tridgell 91a60be758 GCS_MAVLink: fixed indent-tabs-mode 2013-05-30 09:50:57 +10:00
Andrew Tridgell 6862791d66 PID: fixed indent-tabs-mode 2013-05-30 09:50:37 +10:00
Andrew Tridgell c96ac5edbb RC_Channel: fixed indent-tabs-mode 2013-05-30 09:48:45 +10:00
Randy Mackay 4ce4b7aef9 OptFlow: minor commenting and format changes 2013-05-28 22:56:11 +09:00
Andrew Tridgell 15a84972d1 SITL: added SIM_MAG_ERROR parameter 
this is a compass yaw error in degrees, used for testing navigation
with a bad compass
 2013-05-27 13:37:34 +10:00
Randy Mackay ec7ee47099 Copter: scaling stability patch 2013-05-27 11:21:31 +09:00
Randy Mackay dbd6524f9f Copter: WPNav consolidate acceleration #defines 2013-05-27 10:36:24 +09:00
Randy Mackay e3dffb920b Copter: initialise target vel in loiter 2013-05-25 14:07:04 +09:00
Randy Mackay a474b97291 Copter: resolve compiler warning re unused vars 2013-05-25 13:32:15 +09:00
Randy Mackay 916f241fff Copter: Leonard's improved Loiter 2013-05-24 23:45:03 +09:00
Andrew Tridgell 14628990e6 AP_AHRS: make wind estimation configurable 
rover doesn't want it
 2013-05-24 11:21:42 +10:00
Andrew Tridgell 807dbf9786 AP_InertialSensor: fixed a build warning 2013-05-24 11:21:42 +10:00
Randy Mackay 46d65150af Copter: lengthen loiter stopping point 
This will make stops less aggressive when entering loiter at very high
speeds (more 7.5m/s)
 2013-05-22 17:35:20 +09:00
Randy Mackay 400c1bd7b7 Copter: smooth waypoint transitions 
Speed of intermediate point is initialised and constrained based on
current speed vector vs direction to the next waypoint.
This means the copter does not slow if the previous segment and next
segment are in line and also the intermediate point is not advanced
towards the next waypoint if the copter is moving quickly in the
opposite direction.
 2013-05-22 14:17:26 +09:00
Andrew Tridgell 59b6118a1d AP_InertialSensor: fixed parameter markup 2013-05-21 17:02:13 +10:00
Randy Mackay b27ddf0f63 AP_AHRS: add parameter descriptions 2013-05-21 15:39:03 +09:00
Randy Mackay 6a65a32de2 CopterMotors: add formatting info to top of files 2013-05-20 10:48:42 +09:00
Randy Mackay 5235f4cacd Copter: allow Tri copters to init ESCs through APM/PX4 2013-05-19 17:28:39 +09:00
Randy Mackay b914f9ba06 SITL: use SIM_ENGINE_MUL to simulate motor failure 2013-05-19 14:29:08 +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 2c149bac8e HAL_PX4: added new arming ioctls 2013-05-16 16:43:38 +10:00
Randy Mackay cb795ea536 WPNav: divide by zero checks 2013-05-15 11:51:26 +09:00
Randy Mackay 610edd8f9a ACMotors: small formatting change 2013-05-14 19:01:53 +09:00
Randy Mackay cd5795a4ac ACMotors: make a few more functions non-virtual 
Saves at least 22 bytes of RAM
 2013-05-14 18:23:36 +09:00
Randy Mackay ad00e0ee1e ACMotors: make test_order uint_8 2013-05-14 18:03:34 +09:00
Randy Mackay 88893f4209 ACMotors: make a few functions non-virtual 2013-05-14 17:41:12 +09:00
Randy Mackay bd07b1e57b ACMotors: remove unused get_num_motors function 
Saves about 4 bytes of RAM
 2013-05-14 17:35:27 +09:00
Randy Mackay 5bb0582854 ACMotors: ESC Calibration only for enabled motors 2013-05-14 17:07:36 +09:00
Randy Mackay 33d1129904 Copter: remove unused TB_RATIO parameter 2013-05-14 16:56:55 +09:00
Randy Mackay 7a81c41689 AP_Motors: motor_enabled array to bool 
Also increased the default MAX_THROTTLE from 850 to 1000 but this number
is always overwritten by the main code anyway so should have no
functional impact.
 2013-05-14 16:05:22 +09:00
Andrew Tridgell 411e940342 DataFlash: prevent the dataflash erase problem 
only allow writes to dataflash block devices once StartNewLog() has
been called
 2013-05-14 16:31:45 +10:00
Andrew Tridgell 119ffb0fc0 SITL: fixed simulated airspeed value 2013-05-13 15:42:38 +10:00
Andrew Tridgell a5b20b4dfc AP_HAL: removed scaling factor on analog sources 
these are not use anymore, as voltage_average() is used instead
 2013-05-13 15:29:42 +10:00
Andrew Tridgell 48cfdac6f0 AP_ADC_AnalogSource: added voltage_average_ratiometric() 2013-05-13 15:13:59 +10:00
Andrew Tridgell cec08be9cb AP_Rangefinder: use ratiometric analog input for analog sonar 2013-05-13 15:13:43 +10:00
Andrew Tridgell dfb98490f4 AP_Airspeed: use rationmetric analog input for airspeed sensor 2013-05-13 15:13:19 +10:00
Andrew Tridgell 589b8cdb58 AP_HAL: added voltage_average_ratiometric() call to AnalogIn 
this is for ratiometric sensors such as the 3DR airspeed sensor and
the Maxbotix analog sonar
 2013-05-13 15:12:43 +10:00
Andrew Tridgell a17b85c661 AP_AHRS: use vectors for ground vector complimentary filter 2013-05-13 11:27:55 +10:00
Paul Riseborough 9f309a2aa6 AP_L1_Control: Remove potential nan errors 
If WP A and B were the same or ground speed was exactly zero, then the
previous code would produce a nan output.  Protection against these
two cases has been added.

If WP A and B are equal, we track directly to the target waypoint
 2013-05-13 11:27:51 +10:00
Randy Mackay 55235630b6 Copter: bug fix for slow loiter repositioning 2013-05-12 14:51:02 +09:00
Andrew Tridgell 9bdbd6bfbd MAVLink: update to latest common.xml from upstream 2013-05-11 21:07:27 +10:00
Randy Mackay 61288fcb90 WPNav: make get_stopping_point method public 2013-05-11 16:05:42 +09:00
Randy Mackay 80bd458f29 Compass: update parameter description 
We do not want people modifying the COMPASS_MOTCT manually
 2013-05-11 14:50:36 +09:00
Andrew Tridgell 172faeea26 HAL_PX4: moved rc.APM to new ROMFS directory 2013-05-10 06:16:54 +10:00
Andrew Tridgell b3e21c6add HAL_PX4: include visibility.h 
needed for new nuttx structure
 2013-05-10 06:16:53 +10:00
Andrew Tridgell 220e7b019c SITL: use PACKED attribute in fdm structure 2013-05-09 20:10:31 +10:00
Andrew Tridgell 416fef73a8 AP_Param: use PACKED attribute in examples 2013-05-09 20:10:31 +10:00
Andrew Tridgell ed918dc6bc SITL: use PACKED attribute instead of pragma pack 2013-05-09 20:10:31 +10:00
Andrew Tridgell 06b6f4b04e AP_GPS: use PACKED attribute instead of pragma pack 2013-05-09 20:10:31 +10:00
Andrew Tridgell 62b9a580e8 AP_Common: make PACKED depend on architecture 
this will remove lots of warnings when building with arduino
 2013-05-09 20:10:31 +10:00
Randy Mackay ed5ddfd9db WPNav: initialise desired roll, pitch 
bug-fix to resolve 1/10th second twitch when loiter or waypoint
controller are first engaged
 2013-05-09 18:32:02 +09:00
Andrew Tridgell fefbeacf86 AP_InertialSensor: use SEVERITY_USER_RESPONSE for accel cal messages 
thanks to the suggestion from Kevin
 2013-05-09 09:28:25 +10:00
Andrew Tridgell 11bf6f40f7 GCS_MAVLink: moved gcs_severity to library header 2013-05-09 09:27:58 +10:00
Andrew Tridgell 9a87b3f3c1 AP_Compass: use const on more functions and remove old calculate_heading() 
the calculate_heading() based on roll/pitch is not needed anywhere
 2013-05-09 09:24:06 +10:00
Andrew Tridgell f78de63a09 AP_Compass: more efficient calculate_heading() implementation 
Thanks to piersh for this improvement. See

b5f0635455 (commitcomment-3171806)
 2013-05-09 09:24:06 +10:00
Randy Mackay 9f735c8d03 WPNav: add fast waypoints flag 
Waypoint is considered "reached" when the intermediate point reaches the
destination
 2013-05-09 00:18:02 +09:00
Randy Mackay 4704b729c2 WPNav: reduce max acceleration to 2.5m/s 
Also includes bug fix to ramp up of speed of intermediate point
 2013-05-08 23:20:29 +09:00
Andrew Tridgell 095505129c DataFlash: hopefully fixed cause of frequent dataflash erase 
Wait for 0.1s after erase and before we start writing parameters to
the log

Pair-Programmed-With: Randy Mackay <rmackay9@yahoo.com>
 2013-05-08 17:00:36 +10:00
Andrew Tridgell 7fdf1b6f78 DataFlash: fixed example build 2013-05-08 16:45:40 +10:00
Andrew Tridgell 8f57b72e3f AP_InserialSensor: fixed example build 2013-05-08 16:45:31 +10:00
Andrew Tridgell c3738ed344 AP_InertialNav: fixed example build 2013-05-08 16:45:21 +10:00
Andrew Tridgell ed93f80ba9 AP_Baro: fixed example build 2013-05-08 16:45:07 +10:00
Andrew Tridgell 55d148abdd AC_WPNav: fixed example build 2013-05-08 16:44:59 +10:00
Andrew Tridgell 56694fd9b1 AC_Fence: fixed example build 2013-05-08 16:44:50 +10:00
Andrew Tridgell 2ddeaa7f4d AP_InertialSensor: show calibration offsets for success and failure 
Pair-Programmed-With: Randy Mackay <rmackay9@yahoo.com>
 2013-05-08 16:19:06 +10:00
Andrew Tridgell f3f4b7205c AP_InsertialSensor: added support for MAVLink user interaction 
allows APM to ask user to print enter to continue via MAVLink messages
during accel calibration
 2013-05-08 16:18:40 +10:00
Andrew Tridgell 4bc53acbda SITL: support vsnprintf with %S on SITL 2013-05-08 16:17:36 +10:00
Andrew Tridgell 9cd0af1132 HAL_PX4: make PX4 snprintf support %S format 
just maps it to %s for normal printf
 2013-05-08 16:17:06 +10:00
Andrew Tridgell 223dfe4de5 AP_Rangefinder: added units for settle time 2013-05-08 14:21:32 +10:00
Randy Mackay 328d900647 WPNav: flexible loiter speed 
Also includes bug fix to allow speeds > 10m/s during missions
 2013-05-07 17:11:24 +09:00
Randy Mackay 1f8161b493 AC_WPNav: remove unnecessary speed constraint 2013-05-07 11:58:04 +09:00
priseborough aee23361dd APM_Control: Corrected typographical error in APM_Control/TuningGuide.txt 2013-05-07 11:00:57 +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
Andrew Tridgell 055da3c4b6 SITL: added SIM_GPS_NUMSATS parameter 
this allows testing of the DCM code with less than 6 satellites
 2013-05-07 10:38:36 +10:00
Randy Mackay ceda7d26b0 AHRS: add correct_centrifugal and flags structure 2013-05-06 15:32:06 +09:00
Andrew Tridgell 46c6aa8a9a APM_Control: tweak the parameter names 2013-05-05 21:51:09 +10:00
Andrew Tridgell 400777b059 APM_Control: support inverted flight in AP_PitchController 
auto-reverse pitch control when inverted. This is useful not just for
inverted flight mode, but also for recovering from poor manual flight

Pair-Programmed-With: Paul Riseborough <p_riseborough@live.com.au>
 2013-05-05 21:51:09 +10:00
Andrew Tridgell 604bfd0700 APM_Control: adjust recommended ranges 2013-05-05 21:51:09 +10:00
Andrew Tridgell 7af3c667a5 APM_Control: added roll controller parameter docs 2013-05-05 21:51:09 +10:00
Andrew Tridgell 52c3f8841f APM_Control: added yaw parameter docs 2013-05-05 21:51:09 +10:00
Andrew Tridgell b618d1d81f APM_Control: added inline docs to pitch controller 2013-05-05 21:51:09 +10:00
Andrew Tridgell 6c6c0079ee APM_Control: improved formatting of tuning guide 
be a bit more web friendly
 2013-05-05 21:51:09 +10:00
Andrew Tridgell 742df0ac05 APM_Control: rename to avoid spaces in filenames 2013-05-05 21:51:09 +10:00
Andrew Tridgell 23d9c31b0a APM_Control: fixed build and merge errors 2013-05-05 21:51:08 +10:00
Paul Riseborough 10ecffce01 APM_Control: ROLL and PITCH controllers 
These changes reduce height variation in turns and improve
robustness. the specific changes are:

1) Linked roll and pitch integrator protection to the final output
value so that if final output is on upper limit, the integrator is
prevented from increasing and vice-versa. This improves wind-up
protection.

2) Modified rate feedback in roll and pitch controllers to use body
rates rather than Euler or earth rates.

3) Changed the roll to pitch compensation to use measured roll angle
and estimated airspeed to calculate the component of turn rate
(assuming a level coordinated turn) around the pitch axis. This a
mathematically correct calculation and will work over a range of bank
angles and aircraft with minimal (if any) tuning required.

4) The integrator in the roll and pitch loop is clamped when the
estimated speed is below the minimum FBW speed

5) The noise filter in the pitch and roll loop has been changed to use
a FOH discretisation. This gives improved noise rejection and less
phase loss when compared to the previous filter that used a ZOH or
equivalent discretisation.

This has been flown on the rascal in the SITL and on a X-8 with
limited flight testing. Initial results have been encouraging with
reduced height variation in turns.  Compare to standard PIDS, the
revised pitch and roll controllers allow the use of rate feedback
(effectively the same as the old D term) without beating the servos to
death.  The bank angle compensation in the pitch loop works
effectively over a much larger range of bank angles and requires
minimal tuning compared to the old calculation.

YAW CONTROLLER

Currently testing the a 3-loop acceleration autopilot topology for the
yaw loop with feed forward yaw rate for turn compensation. This 3-loop
topology is commonly used in tactical skid to to turn missiles and is
easy to tune. The following block diagram shows the general signal
flow

Note that the acceleration measurement has to pass through an
integrator before it gets to the actuator. This is a important feature
as it eliminates problems of high frequency noise and potential
coupling with structural modes associated with direct feedback of
measured acceleration to actuator.

The high pass filter has been inserted to compensate for airspeed and
bank angle measurement errors which will cause steady state errors in
the calculation of the turn yaw rate.

The yaw controller flies SITL well, but hasn't been flight tested
yet. It can be configured either as a simple yaw damper, or the
acceleration and integral term can be turned on to allow feedback
control of lateral acceleration/sideslip.

TO DO:

Need to reduce number of tuning parameters and provide consistent
naming Need to provide guidance on tuning these loops with definitions
for all the gain terms.  Need to check signs and units into and out of
lateral loops.

DESIGN DECISIONS PENDING:

1) Can we remove the noise filters? Provided the mpu6k noise filter is
running they are of limited benefit given the 25Hz Nyquist frequency

2) If we do remove them and rely on the mpu6k noise filter, what is
the apprporiate default cutoff frequency for plane use. 20Hz is
probably OK for most setups, but some noisy/high vibration setups
would require as low as 10Hz

3) The inverted flight logic looks like a crash waiting to
happen. It's problematic to test and even if implemented correctly
would still crash a plane with poor inverted flight capability. We
should either implement it properly and fully tested or delete it.
 2013-05-05 21:51:08 +10:00
priseborough 205397d030 APM_Control: Modified calculation of bank compensation rate offset to prevent climb if speed > max fbw speed 
The previous calculation constrained the speed used to calculate the
bank compensation rate offset between the min and max fbw speeds. This
would result in an unwanted climb if flown above the max fbw speed
(this could happen in fbw-a mode)
 2013-05-05 21:51:08 +10:00
priseborough e7736ed4e0 APM_Control: APM tuning guide.txt - Updated tuning instructions with numerical values for alternate method 2013-05-05 21:51:08 +10:00
Paul Riseborough 3034a9fab2 APM_Control: Added alternate tuning method for roll and pitch loops 
The alternate tuning method for roll and pitch will give a better
results, but comes with more risk as it will result in a larger rate
feedback gain
 2013-05-05 21:51:08 +10:00
priseborough 2c29186b03 APM_Control: APM tuning guide.txt - Minor editorial corrections 2013-05-05 21:51:08 +10:00
priseborough d159d39037 APM_Control: APM tuning guide.txt - Added step by step tuning description. 2013-05-05 21:51:08 +10:00
priseborough 99f0fb6bd2 APM_Control : Removed 20Hz low-pass filters on rate gyro inputs. 
These are not required due to MPU 6000 filtering.
 2013-05-05 21:51:08 +10:00
priseborough 317b75f4cd APM_Control: Added tuning guide readme 2013-05-05 21:51:08 +10:00
Andrew Tridgell 9654546b5a AP_L1_Control: Cleaned up calculation of damping to reduce computations 
also removed _cross2D, using math library instead
 2013-05-05 21:51:08 +10:00
Randy Mackay 30faf87715 InertialNav: use AP_Math's longitude_scale 2013-05-05 14:32:25 +09:00
Randy Mackay 7c9d9b9800 AP_Math: use DEG_TO_RAD in longitude_scale 
Also increased accuracy of RadiansToCentiDegrees although it is like the
compiler will throw away the extra digits anyway.
 2013-05-05 14:31:24 +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
Andrew Tridgell 737f0305ef AP_Math: implement vector2 cross product 
useful in DCM for faster yaw correction
 2013-05-05 13:47:51 +10:00
Andrew Tridgell f4189e083b AP_Math: added mulXY() for matrix3 and vector3 
returns the XY components of the product
 2013-05-05 13:47:23 +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
Randy Mackay c20eac7a70 AP_InertialNav: use standard LATLON_TO_CM, DEG_TO_RAD constants 2013-05-04 15:04:55 +09:00
Andrew Tridgell 99d21854f9 SITL: fixed drift rate limit in simulator 2013-05-04 15:16:35 +10:00
Andrew Tridgell 53ebcfeba5 SITL: fixed compass vector to be based on yaw not GPS heading 
Many thanks to Randy for noticing this, and apologies for the wasted time!
 2013-05-04 14:28:08 +10:00
Randy Mackay 1cfd5900a8 Copter: add support for H-quad frame 
H-quads are like X quads but the motors spin in the opposite direction.
Having the motors reversed seems to help with yaw authority because of
the slight flex in bodies
 2013-05-03 23:13:40 +09:00
Randy Mackay 647a93e78e Copter: remove jerk when entering RTL or AUTO 
Loiter target position was not being initialised properly.
Add a few more comments
 2013-05-03 16:58:00 +09:00
Randy Mackay bd75de6a22 AC_Fence: reduce to 150m radius and 100m high 
100m high,
 2013-05-03 14:57:37 +09:00
Andrew Tridgell 6cc9939891 AP_ADC: added dummy stop_pin and settle_time calls 2013-05-03 11:11:40 +10:00
Andrew Tridgell 0e66bac70b AP_RangeFinder: removed special case for APM1 
the airspeed port doesn't have enough power for the sonar anyway
 2013-05-03 10:09:54 +10:00
Andrew Tridgell 244a10aeb6 HAL_SMACCM: fixed build for new AnalogIn API 2013-05-03 10:09:14 +10:00
Andrew Tridgell 9bc48c9894 HAL_PX4: fixed build with new AnalogIn API 
pin settle times not actually implemented on PX4 yet
 2013-05-03 10:09:02 +10:00
Andrew Tridgell 5ac493908c SITL: fixed build with new AnalogIn API 2013-05-03 10:08:39 +10:00
Andrew Tridgell 09ca9d4283 AP_Rangefinder_analog: implement settle time and stop_pin 2013-05-03 09:45:19 +10:00
Andrew Tridgell 5d80a5619d HAL_Empty: add new API functions 2013-05-03 09:45:19 +10:00
Andrew Tridgell 912ed2c97c HAL_AVR: initialise settle time 2013-05-03 09:45:19 +10:00
Andrew Tridgell e7a6b12ac1 HAL_AVR: support set_stop_pin() and set_settle_time() for analogin 
useful for dual sonar support
 2013-05-03 09:45:19 +10:00
Andrew Tridgell 0b6cfc7294 AP_HAL: added set_stop_pin() and set_settle_time() interfaces to analogin 
this is for multiple sonars on one vehicle, to prevent them
interfering with each other
 2013-05-03 09:45:19 +10:00
Andrew Tridgell 0242d50ad4 DataFlash: added Log_Write_Message() 
useful for logging general messages
 2013-05-03 09:18:14 +10:00
Andrew Tridgell ccd38e58a1 HAL_PX4: fixed the scaling on the analog pins 2013-05-02 21:40:15 +10:00
Andrew Tridgell 500497f5fa AP_HAL: update AnalogIn test to show the first 16 pins 2013-05-02 21:31:55 +10:00
Andrew Tridgell c90d44c121 AP_Compass_HIL: fixed indentation 2013-05-02 21:31:17 +10:00
Andrew Tridgell 26bf636541 AP_Baro: fixed a build warning 2013-05-02 21:31:04 +10:00