* Stage 1 PID/PIFF refactoring
* Fix F3 compilation
* Minor speedup
* Make PID controller type configurable
* fix compilation
* Further minor optimizations
* Fix mixer integration
* Move some mixer routines to FASTRAM and precompute constants
* Run applyMotorRateLimiting only when needed
* Revert "Move some mixer routines to FASTRAM and precompute constants"
This reverts commit 31370c1288.
* Revert "Minor speedup"
This reverts commit 02b58e5f05.
* fix compilation
* Remove unused parameter
* Fix F3
* Initial cut on full quaternion/vector IMU conversion
* More accurate quaternion integration
* Refactor vector struct per @ledvinap suggection
* Implement rotation matrix from axis/angle; Refactor mag declination to have orientation correspond to RPY angles
* Use magnetic North vector as a reference
Inject link quality to virtual channel 17 for CRSF telemetry, change to integer arithmetic for channel value conversion
Rename USE_PWM and USE_PPM to USE_RX_PWM and USE_RX_PPM
GPS position reset; GPS/BARO offset calculation
Use real GPS EPH/EPV when available; Trust GPS data less if error is large; Different EPH/EPV calculation logic; Log EPH/EPV to blackbox
Increase EPH/EPV only if correction was not applied; Typo fix
Optimisations to EPH/EPV
Automatic magnetic declination from GPS coordinates (approximate to 1-2 degrees) (disabled)
Accelerometer bias compensation
Quaternion-based Mahony's DCM IMU (implementation by S. Madgwick)
Ability to lock heading to GPS cource for airplanes
Faster acquisition by initial attitude by using higher DCM kP gain on powerup
Changes to mag calibration algorithm (@HaukeRa's code). Compass calibration now independent from align_mag.
Changed acc calibration to proper 3-axis offset calculation code (same code as for mag). Changed board alignment angles to decidegrees (configurator incompatibility). Removed accelerometer trims (values passed thru MSP are ignored). Accel trim stick combo now adjusts board alignment directly (real-time, without reboot). Removed inflight acc calibration.
FIR filter implementation for different looptimes. Option gyro_cut_hz replaced with gyro_fir_enable (default gyro_soft_filter=3 preset - a very pessimistic filter with fairly large delay but low cutoff frequency for large or very noisy copters)
iNav-related PIDs renamed in CLI to avoid re-usage of old values when restoring config dumps.
PID with back-calculation and I-term anti-windup. Smarter max acceleration and jerk limiting
Initial support for airplane navigation. ALTHOLD, POSHOLD (circular loiter around the waypoint) and RTH should work. UNTESTED! RTH altitude probably needs some work. Autolanding will NOT function at the moment - the AUTOLAND phase will never complete. Absolutely no throttle control at the moment (fully manual control).
Increase delay for bmp085 baro detection. Resolves an issue with bmp085 not being detected sometimes on powerup
Fixed the missing checks for MIXER_CUSTOM_AIRPLANE
Lots of small fixes
* Renamed several methods and variables so they make more sense.
* Move more altitude hold related code out of imu.c/h into
altitudehold.c/h.
* Fixed a unsigned integer being using instead of an signed integer in
the throttle calculation code.
