/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- #define THISFIRMWARE "ArduCopter V3.2-dev" /* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ /* * ArduCopter Version 3.0 * Creator: Jason Short * Lead Developer: Randy Mackay * Lead Tester: Marco Robustini * Based on code and ideas from the Arducopter team: Leonard Hall, Andrew Tridgell, Robert Lefebvre, Pat Hickey, Michael Oborne, Jani Hirvinen, Olivier Adler, Kevin Hester, Arthur Benemann, Jonathan Challinger, John Arne Birkeland, Jean-Louis Naudin, Mike Smith, and more * Thanks to: Chris Anderson, Jordi Munoz, Jason Short, Doug Weibel, Jose Julio * * Special Thanks to contributors (in alphabetical order by first name): * * Adam M Rivera :Auto Compass Declination * Amilcar Lucas :Camera mount library * Andrew Tridgell :General development, Mavlink Support * Angel Fernandez :Alpha testing * AndreasAntonopoulous:GeoFence * Arthur Benemann :DroidPlanner GCS * Benjamin Pelletier :Libraries * Bill King :Single Copter * Christof Schmid :Alpha testing * Craig Elder :Release Management, Support * Dani Saez :V Octo Support * Doug Weibel :DCM, Libraries, Control law advice * Gregory Fletcher :Camera mount orientation math * Guntars :Arming safety suggestion * HappyKillmore :Mavlink GCS * Hein Hollander :Octo Support, Heli Testing * Igor van Airde :Control Law optimization * Jack Dunkle :Alpha testing * James Goppert :Mavlink Support * Jani Hiriven :Testing feedback * Jean-Louis Naudin :Auto Landing * John Arne Birkeland :PPM Encoder * Jose Julio :Stabilization Control laws, MPU6k driver * Julian Oes :Pixhawk * Jonathan Challinger :Inertial Navigation, CompassMot, Spin-When-Armed * Kevin Hester :Andropilot GCS * Max Levine :Tri Support, Graphics * Leonard Hall :Flight Dynamics, Throttle, Loiter and Navigation Controllers * Marco Robustini :Lead tester * Michael Oborne :Mission Planner GCS * Mike Smith :Pixhawk driver, coding support * Olivier Adler :PPM Encoder, piezo buzzer * Pat Hickey :Hardware Abstraaction Layer (HAL) * Robert Lefebvre :Heli Support, Copter LEDs * Roberto Navoni :Library testing, Porting to VRBrain * Sandro Benigno :Camera support, MinimOSD * ..and many more. * * Code commit statistics can be found here: https://github.com/diydrones/ardupilot/graphs/contributors * Wiki: http://copter.ardupilot.com/ * Requires modified version of Arduino, which can be found here: http://ardupilot.com/downloads/?category=6 * */ //////////////////////////////////////////////////////////////////////////////// // Header includes //////////////////////////////////////////////////////////////////////////////// #include #include #include // Common dependencies #include #include #include #include // AP_HAL #include #include #include #include #include #include #include // Application dependencies #include #include // MAVLink GCS definitions #include // ArduPilot GPS library #include // GPS glitch protection library #include // ArduPilot Mega Flash Memory Library #include // ArduPilot Mega Analog to Digital Converter Library #include #include #include // ArduPilot Mega Magnetometer Library #include // ArduPilot Mega Vector/Matrix math Library #include // Curve used to linearlise throttle pwm to thrust #include // ArduPilot Mega Inertial Sensor (accel & gyro) Library #include #include #include // PID library #include // P library #include // Attitude control library #include // Attitude control library for traditional helicopter #include // Position control library #include // RC Channel Library #include // AP Motors library #include // Range finder library #include // Optical Flow library #include // Filter library #include // APM FIFO Buffer #include // APM relay #include #include // Photo or video camera #include // Camera/Antenna mount #include // needed for AHRS build #include // needed for AHRS build #include // ArduPilot Mega inertial navigation library #include // ArduCopter waypoint navigation library #include // circle navigation library #include // ArduPilot Mega Declination Helper Library #include // Arducopter Fence library #include // software in the loop support #include // main loop scheduler #include // RC input mapping library #include // Notify library #include // Battery monitor library #include // board configuration library #if SPRAYER == ENABLED #include // crop sprayer library #endif #if EPM_ENABLED == ENABLED #include // EPM cargo gripper stuff #endif // AP_HAL to Arduino compatibility layer #include "compat.h" // Configuration #include "defines.h" #include "config.h" #include "config_channels.h" // key aircraft parameters passed to multiple libraries static AP_Vehicle::MultiCopter aparm; // Local modules #include "Parameters.h" //////////////////////////////////////////////////////////////////////////////// // cliSerial //////////////////////////////////////////////////////////////////////////////// // cliSerial isn't strictly necessary - it is an alias for hal.console. It may // be deprecated in favor of hal.console in later releases. static AP_HAL::BetterStream* cliSerial; // N.B. we need to keep a static declaration which isn't guarded by macros // at the top to cooperate with the prototype mangler. //////////////////////////////////////////////////////////////////////////////// // AP_HAL instance //////////////////////////////////////////////////////////////////////////////// const AP_HAL::HAL& hal = AP_HAL_BOARD_DRIVER; //////////////////////////////////////////////////////////////////////////////// // Parameters //////////////////////////////////////////////////////////////////////////////// // // Global parameters are all contained within the 'g' class. // static Parameters g; // main loop scheduler static AP_Scheduler scheduler; // AP_Notify instance static AP_Notify notify; //////////////////////////////////////////////////////////////////////////////// // prototypes //////////////////////////////////////////////////////////////////////////////// static void update_events(void); static void print_flight_mode(AP_HAL::BetterStream *port, uint8_t mode); //////////////////////////////////////////////////////////////////////////////// // Dataflash //////////////////////////////////////////////////////////////////////////////// #if CONFIG_HAL_BOARD == HAL_BOARD_APM2 static DataFlash_APM2 DataFlash; #elif CONFIG_HAL_BOARD == HAL_BOARD_APM1 static DataFlash_APM1 DataFlash; #elif CONFIG_HAL_BOARD == HAL_BOARD_AVR_SITL static DataFlash_File DataFlash("logs"); //static DataFlash_SITL DataFlash; #elif CONFIG_HAL_BOARD == HAL_BOARD_PX4 static DataFlash_File DataFlash("/fs/microsd/APM/LOGS"); #elif CONFIG_HAL_BOARD == HAL_BOARD_LINUX static DataFlash_File DataFlash("logs"); #else static DataFlash_Empty DataFlash; #endif //////////////////////////////////////////////////////////////////////////////// // the rate we run the main loop at //////////////////////////////////////////////////////////////////////////////// #if MAIN_LOOP_RATE == 400 static const AP_InertialSensor::Sample_rate ins_sample_rate = AP_InertialSensor::RATE_400HZ; #else static const AP_InertialSensor::Sample_rate ins_sample_rate = AP_InertialSensor::RATE_100HZ; #endif //////////////////////////////////////////////////////////////////////////////// // Sensors //////////////////////////////////////////////////////////////////////////////// // // There are three basic options related to flight sensor selection. // // - Normal flight mode. Real sensors are used. // - HIL Attitude mode. Most sensors are disabled, as the HIL // protocol supplies attitude information directly. // - HIL Sensors mode. Synthetic sensors are configured that // supply data from the simulation. // // All GPS access should be through this pointer. static GPS *g_gps; static GPS_Glitch gps_glitch(g_gps); // flight modes convenience array static AP_Int8 *flight_modes = &g.flight_mode1; #if HIL_MODE == HIL_MODE_DISABLED #if CONFIG_ADC == ENABLED static AP_ADC_ADS7844 adc; #endif #if CONFIG_IMU_TYPE == CONFIG_IMU_MPU6000 static AP_InertialSensor_MPU6000 ins; #elif CONFIG_IMU_TYPE == CONFIG_IMU_OILPAN static AP_InertialSensor_Oilpan ins(&adc); #elif CONFIG_IMU_TYPE == CONFIG_IMU_SITL static AP_InertialSensor_HIL ins; #elif CONFIG_IMU_TYPE == CONFIG_IMU_PX4 static AP_InertialSensor_PX4 ins; #elif CONFIG_IMU_TYPE == CONFIG_IMU_FLYMAPLE AP_InertialSensor_Flymaple ins; #elif CONFIG_IMU_TYPE == CONFIG_IMU_L3G4200D AP_InertialSensor_L3G4200D ins; #endif #if CONFIG_HAL_BOARD == HAL_BOARD_AVR_SITL // When building for SITL we use the HIL barometer and compass drivers static AP_Baro_HIL barometer; static AP_Compass_HIL compass; static SITL sitl; #else // Otherwise, instantiate a real barometer and compass driver #if CONFIG_BARO == AP_BARO_BMP085 static AP_Baro_BMP085 barometer; #elif CONFIG_BARO == AP_BARO_PX4 static AP_Baro_PX4 barometer; #elif CONFIG_BARO == AP_BARO_MS5611 #if CONFIG_MS5611_SERIAL == AP_BARO_MS5611_SPI static AP_Baro_MS5611 barometer(&AP_Baro_MS5611::spi); #elif CONFIG_MS5611_SERIAL == AP_BARO_MS5611_I2C static AP_Baro_MS5611 barometer(&AP_Baro_MS5611::i2c); #else #error Unrecognized CONFIG_MS5611_SERIAL setting. #endif #endif #if CONFIG_HAL_BOARD == HAL_BOARD_PX4 static AP_Compass_PX4 compass; #else static AP_Compass_HMC5843 compass; #endif #endif // real GPS selection #if GPS_PROTOCOL == GPS_PROTOCOL_AUTO AP_GPS_Auto g_gps_driver(&g_gps); #elif GPS_PROTOCOL == GPS_PROTOCOL_NMEA AP_GPS_NMEA g_gps_driver; #elif GPS_PROTOCOL == GPS_PROTOCOL_SIRF AP_GPS_SIRF g_gps_driver; #elif GPS_PROTOCOL == GPS_PROTOCOL_UBLOX AP_GPS_UBLOX g_gps_driver; #elif GPS_PROTOCOL == GPS_PROTOCOL_MTK AP_GPS_MTK g_gps_driver; #elif GPS_PROTOCOL == GPS_PROTOCOL_MTK19 AP_GPS_MTK19 g_gps_driver; #elif GPS_PROTOCOL == GPS_PROTOCOL_NONE AP_GPS_None g_gps_driver; #else #error Unrecognised GPS_PROTOCOL setting. #endif // GPS PROTOCOL // Inertial Navigation EKF #if AP_AHRS_NAVEKF_AVAILABLE AP_AHRS_NavEKF ahrs(ins, barometer, g_gps); #else AP_AHRS_DCM ahrs(ins, barometer, g_gps); #endif #elif HIL_MODE != HIL_MODE_DISABLED // sensor emulators static AP_ADC_HIL adc; static AP_Baro_HIL barometer; static AP_Compass_HIL compass; static AP_GPS_HIL g_gps_driver; static AP_InertialSensor_HIL ins; static AP_AHRS_DCM ahrs(ins, barometer, g_gps); #if CONFIG_HAL_BOARD == HAL_BOARD_AVR_SITL // When building for SITL we use the HIL barometer and compass drivers static SITL sitl; #endif #else #error Unrecognised HIL_MODE setting. #endif // HIL MODE //////////////////////////////////////////////////////////////////////////////// // Optical flow sensor //////////////////////////////////////////////////////////////////////////////// #if OPTFLOW == ENABLED static AP_OpticalFlow_ADNS3080 optflow; #endif //////////////////////////////////////////////////////////////////////////////// // GCS selection //////////////////////////////////////////////////////////////////////////////// static const uint8_t num_gcs = MAVLINK_COMM_NUM_BUFFERS; static GCS_MAVLINK gcs[MAVLINK_COMM_NUM_BUFFERS]; //////////////////////////////////////////////////////////////////////////////// // SONAR selection //////////////////////////////////////////////////////////////////////////////// // ModeFilterInt16_Size3 sonar_mode_filter(1); #if CONFIG_SONAR == ENABLED static AP_HAL::AnalogSource *sonar_analog_source; static AP_RangeFinder_MaxsonarXL *sonar; #endif //////////////////////////////////////////////////////////////////////////////// // User variables //////////////////////////////////////////////////////////////////////////////// #ifdef USERHOOK_VARIABLES #include USERHOOK_VARIABLES #endif //////////////////////////////////////////////////////////////////////////////// // Global variables //////////////////////////////////////////////////////////////////////////////// /* Radio values * Channel assignments * 1 Ailerons (rudder if no ailerons) * 2 Elevator * 3 Throttle * 4 Rudder (if we have ailerons) * 5 Mode - 3 position switch * 6 User assignable * 7 trainer switch - sets throttle nominal (toggle switch), sets accels to Level (hold > 1 second) * 8 TBD * Each Aux channel can be configured to have any of the available auxiliary functions assigned to it. * See libraries/RC_Channel/RC_Channel_aux.h for more information */ //Documentation of GLobals: static union { struct { uint8_t home_is_set : 1; // 0 uint8_t simple_mode : 2; // 1,2 // This is the state of simple mode : 0 = disabled ; 1 = SIMPLE ; 2 = SUPERSIMPLE uint8_t pre_arm_rc_check : 1; // 3 // true if rc input pre-arm checks have been completed successfully uint8_t pre_arm_check : 1; // 4 // true if all pre-arm checks (rc, accel calibration, gps lock) have been performed uint8_t auto_armed : 1; // 5 // stops auto missions from beginning until throttle is raised uint8_t logging_started : 1; // 6 // true if dataflash logging has started uint8_t land_complete : 1; // 7 // true if we have detected a landing uint8_t new_radio_frame : 1; // 8 // Set true if we have new PWM data to act on from the Radio uint8_t CH7_flag : 2; // 9,10 // ch7 aux switch : 0 is low or false, 1 is center or true, 2 is high uint8_t CH8_flag : 2; // 11,12 // ch8 aux switch : 0 is low or false, 1 is center or true, 2 is high uint8_t usb_connected : 1; // 13 // true if APM is powered from USB connection uint8_t rc_receiver_present : 1; // 14 // true if we have an rc receiver present (i.e. if we've ever received an update }; uint16_t value; } ap; //////////////////////////////////////////////////////////////////////////////// // Radio //////////////////////////////////////////////////////////////////////////////// // This is the state of the flight control system // There are multiple states defined such as STABILIZE, ACRO, static int8_t control_mode = STABILIZE; // Used to maintain the state of the previous control switch position // This is set to -1 when we need to re-read the switch static uint8_t oldSwitchPosition; static RCMapper rcmap; // board specific config static AP_BoardConfig BoardConfig; // receiver RSSI static uint8_t receiver_rssi; //////////////////////////////////////////////////////////////////////////////// // Failsafe //////////////////////////////////////////////////////////////////////////////// static struct { uint8_t rc_override_active : 1; // 0 // true if rc control are overwritten by ground station uint8_t radio : 1; // 1 // A status flag for the radio failsafe uint8_t battery : 1; // 2 // A status flag for the battery failsafe uint8_t gps : 1; // 3 // A status flag for the gps failsafe uint8_t gcs : 1; // 4 // A status flag for the ground station failsafe int8_t radio_counter; // number of iterations with throttle below throttle_fs_value uint32_t last_heartbeat_ms; // the time when the last HEARTBEAT message arrived from a GCS - used for triggering gcs failsafe } failsafe; //////////////////////////////////////////////////////////////////////////////// // Motor Output //////////////////////////////////////////////////////////////////////////////// #if FRAME_CONFIG == QUAD_FRAME #define MOTOR_CLASS AP_MotorsQuad #elif FRAME_CONFIG == TRI_FRAME #define MOTOR_CLASS AP_MotorsTri #elif FRAME_CONFIG == HEXA_FRAME #define MOTOR_CLASS AP_MotorsHexa #elif FRAME_CONFIG == Y6_FRAME #define MOTOR_CLASS AP_MotorsY6 #elif FRAME_CONFIG == OCTA_FRAME #define MOTOR_CLASS AP_MotorsOcta #elif FRAME_CONFIG == OCTA_QUAD_FRAME #define MOTOR_CLASS AP_MotorsOctaQuad #elif FRAME_CONFIG == HELI_FRAME #define MOTOR_CLASS AP_MotorsHeli #elif FRAME_CONFIG == SINGLE_FRAME #define MOTOR_CLASS AP_MotorsSingle #elif FRAME_CONFIG == COAX_FRAME #define MOTOR_CLASS AP_MotorsCoax #else #error Unrecognised frame type #endif #if FRAME_CONFIG == HELI_FRAME // helicopter constructor requires more arguments static MOTOR_CLASS motors(g.rc_1, g.rc_2, g.rc_3, g.rc_4, g.rc_7, g.rc_8, g.heli_servo_1, g.heli_servo_2, g.heli_servo_3, g.heli_servo_4); #elif FRAME_CONFIG == TRI_FRAME // tri constructor requires additional rc_7 argument to allow tail servo reversing static MOTOR_CLASS motors(g.rc_1, g.rc_2, g.rc_3, g.rc_4, g.rc_7); #elif FRAME_CONFIG == SINGLE_FRAME // single constructor requires extra servos for flaps static MOTOR_CLASS motors(g.rc_1, g.rc_2, g.rc_3, g.rc_4, g.single_servo_1, g.single_servo_2, g.single_servo_3, g.single_servo_4); #elif FRAME_CONFIG == COAX_FRAME // single constructor requires extra servos for flaps static MOTOR_CLASS motors(g.rc_1, g.rc_2, g.rc_3, g.rc_4, g.single_servo_1, g.single_servo_2); #else static MOTOR_CLASS motors(g.rc_1, g.rc_2, g.rc_3, g.rc_4); #endif //////////////////////////////////////////////////////////////////////////////// // PIDs //////////////////////////////////////////////////////////////////////////////// // This is used to hold radio tuning values for in-flight CH6 tuning float tuning_value; //////////////////////////////////////////////////////////////////////////////// // GPS variables //////////////////////////////////////////////////////////////////////////////// // We use atan2 and other trig techniques to calaculate angles // We need to scale the longitude up to make these calcs work // to account for decreasing distance between lines of longitude away from the equator static float scaleLongUp = 1; // Sometimes we need to remove the scaling for distance calcs static float scaleLongDown = 1; //////////////////////////////////////////////////////////////////////////////// // Location & Navigation //////////////////////////////////////////////////////////////////////////////// // This is the angle from the copter to the next waypoint in centi-degrees static int32_t wp_bearing; // The original bearing to the next waypoint. used to point the nose of the copter at the next waypoint static int32_t original_wp_bearing; // The location of home in relation to the copter in centi-degrees static int32_t home_bearing; // distance between plane and home in cm static int32_t home_distance; // distance between plane and next waypoint in cm. static uint32_t wp_distance; // Register containing the index of the current navigation command in the mission script static int16_t command_nav_index; // Register containing the index of the previous navigation command in the mission script // Used to manage the execution of conditional commands static uint8_t prev_nav_index; // Register containing the index of the current conditional command in the mission script static uint8_t command_cond_index; // Used to track the required WP navigation information // options include // NAV_ALTITUDE - have we reached the desired altitude? // NAV_LOCATION - have we reached the desired location? // NAV_DELAY - have we waited at the waypoint the desired time? static float lon_error, lat_error; // Used to report how many cm we are from the next waypoint or loiter target position static uint8_t land_state; // records state of land (flying to location, descending) //////////////////////////////////////////////////////////////////////////////// // Auto //////////////////////////////////////////////////////////////////////////////// static AutoMode auto_mode; // controls which auto controller is run //////////////////////////////////////////////////////////////////////////////// // RTL //////////////////////////////////////////////////////////////////////////////// RTLState rtl_state; // records state of rtl (initial climb, returning home, etc) bool rtl_state_complete; // set to true if the current state is completed //////////////////////////////////////////////////////////////////////////////// // Circle //////////////////////////////////////////////////////////////////////////////// bool circle_pilot_yaw_override; // true if pilot is overriding yaw //////////////////////////////////////////////////////////////////////////////// // SIMPLE Mode //////////////////////////////////////////////////////////////////////////////// // Used to track the orientation of the copter for Simple mode. This value is reset at each arming // or in SuperSimple mode when the copter leaves a 20m radius from home. static float simple_cos_yaw = 1.0; static float simple_sin_yaw; static int32_t super_simple_last_bearing; static float super_simple_cos_yaw = 1.0; static float super_simple_sin_yaw; // Stores initial bearing when armed - initial simple bearing is modified in super simple mode so not suitable static int32_t initial_armed_bearing; //////////////////////////////////////////////////////////////////////////////// // Throttle variables //////////////////////////////////////////////////////////////////////////////// static float throttle_avg; // g.throttle_cruise as a float static int16_t desired_climb_rate; // pilot desired climb rate - for logging purposes only //////////////////////////////////////////////////////////////////////////////// // ACRO Mode //////////////////////////////////////////////////////////////////////////////// static float acro_level_mix; // scales back roll, pitch and yaw inversely proportional to input from pilot //////////////////////////////////////////////////////////////////////////////// // Circle Mode / Loiter control //////////////////////////////////////////////////////////////////////////////// static uint8_t circle_desired_rotations; // how many times to circle as specified by mission command static uint16_t loiter_time_max; // How long we should stay in Loiter Mode for mission scripting (time in seconds) static uint32_t loiter_time; // How long have we been loitering - The start time in millis //////////////////////////////////////////////////////////////////////////////// // CH7 and CH8 save waypoint control //////////////////////////////////////////////////////////////////////////////// // This register tracks the current Mission Command index when writing // a mission using Ch7 or Ch8 aux switches in flight static int8_t aux_switch_wp_index; //////////////////////////////////////////////////////////////////////////////// // Battery Sensors //////////////////////////////////////////////////////////////////////////////// static AP_BattMonitor battery; //////////////////////////////////////////////////////////////////////////////// // Altitude //////////////////////////////////////////////////////////////////////////////// // The cm/s we are moving up or down based on filtered data - Positive = UP static int16_t climb_rate; // The altitude as reported by Sonar in cm - Values are 20 to 700 generally. static int16_t sonar_alt; static uint8_t sonar_alt_health; // true if we can trust the altitude from the sonar static float target_sonar_alt; // desired altitude in cm above the ground // The altitude as reported by Baro in cm - Values can be quite high static int32_t baro_alt; //////////////////////////////////////////////////////////////////////////////// // 3D Location vectors //////////////////////////////////////////////////////////////////////////////// static const struct Location &home = ahrs.get_home(); // Current location of the copter static struct Location current_loc; // Holds the current loaded command from the EEPROM for navigation static struct Location command_nav_queue; // Holds the current loaded command from the EEPROM for conditional scripts static struct Location command_cond_queue; //////////////////////////////////////////////////////////////////////////////// // Navigation Roll/Pitch functions //////////////////////////////////////////////////////////////////////////////// // The Commanded ROll from the autopilot based on optical flow sensor. static int32_t of_roll; // The Commanded pitch from the autopilot based on optical flow sensor. negative Pitch means go forward. static int32_t of_pitch; //////////////////////////////////////////////////////////////////////////////// // Throttle integrator //////////////////////////////////////////////////////////////////////////////// // This is a simple counter to track the amount of throttle used during flight // This could be useful later in determining and debuging current usage and predicting battery life static uint32_t throttle_integrator; //////////////////////////////////////////////////////////////////////////////// // Navigation Yaw control //////////////////////////////////////////////////////////////////////////////// // auto flight mode's yaw mode static uint8_t auto_yaw_mode = AUTO_YAW_LOOK_AT_NEXT_WP; // Yaw will point at this location if yaw_mode is set to YAW_LOOK_AT_LOCATION static Vector3f yaw_look_at_WP; // bearing from current location to the yaw_look_at_WP static float yaw_look_at_WP_bearing; // yaw used for YAW_LOOK_AT_HEADING yaw_mode static int32_t yaw_look_at_heading; // Deg/s we should turn static int16_t yaw_look_at_heading_slew; // heading when in yaw_look_ahead_bearing static float yaw_look_ahead_bearing; //////////////////////////////////////////////////////////////////////////////// // Delay Mission Scripting Command //////////////////////////////////////////////////////////////////////////////// static int32_t condition_value; // used in condition commands (eg delay, change alt, etc.) static uint32_t condition_start; //////////////////////////////////////////////////////////////////////////////// // IMU variables //////////////////////////////////////////////////////////////////////////////// // Integration time (in seconds) for the gyros (DCM algorithm) // Updated with the fast loop static float G_Dt = 0.02; //////////////////////////////////////////////////////////////////////////////// // Inertial Navigation //////////////////////////////////////////////////////////////////////////////// #if AP_AHRS_NAVEKF_AVAILABLE static AP_InertialNav_NavEKF inertial_nav(ahrs, barometer, g_gps, gps_glitch); #else static AP_InertialNav inertial_nav(ahrs, barometer, g_gps, gps_glitch); #endif //////////////////////////////////////////////////////////////////////////////// // Attitude, Position and Waypoint navigation objects // To-Do: move inertial nav up or other navigation variables down here //////////////////////////////////////////////////////////////////////////////// #if FRAME_CONFIG == HELI_FRAME AC_AttitudeControl_Heli attitude_control(ahrs, ins, aparm, motors, g.p_stabilize_roll, g.p_stabilize_pitch, g.p_stabilize_yaw, g.pid_rate_roll, g.pid_rate_pitch, g.pid_rate_yaw); #else AC_AttitudeControl attitude_control(ahrs, ins, aparm, motors, g.p_stabilize_roll, g.p_stabilize_pitch, g.p_stabilize_yaw, g.pid_rate_roll, g.pid_rate_pitch, g.pid_rate_yaw); #endif AC_PosControl pos_control(ahrs, inertial_nav, motors, attitude_control, g.p_alt_hold, g.p_throttle_rate, g.pid_throttle_accel, g.p_loiter_pos, g.pid_loiter_rate_lat, g.pid_loiter_rate_lon); static AC_WPNav wp_nav(&inertial_nav, &ahrs, pos_control); static AC_Circle circle_nav(inertial_nav, ahrs, pos_control); //////////////////////////////////////////////////////////////////////////////// // Performance monitoring //////////////////////////////////////////////////////////////////////////////// static int16_t pmTest1; // System Timers // -------------- // Time in microseconds of main control loop static uint32_t fast_loopTimer; // Counter of main loop executions. Used for performance monitoring and failsafe processing static uint16_t mainLoop_count; // Loiter timer - Records how long we have been in loiter static uint32_t rtl_loiter_start_time; // Used to exit the roll and pitch auto trim function static uint8_t auto_trim_counter; // Reference to the relay object (APM1 -> PORTL 2) (APM2 -> PORTB 7) static AP_Relay relay; // handle repeated servo and relay events static AP_ServoRelayEvents ServoRelayEvents(relay); //Reference to the camera object (it uses the relay object inside it) #if CAMERA == ENABLED static AP_Camera camera(&relay); #endif // a pin for reading the receiver RSSI voltage. static AP_HAL::AnalogSource* rssi_analog_source; #if CLI_ENABLED == ENABLED static int8_t setup_show (uint8_t argc, const Menu::arg *argv); #endif // Camera/Antenna mount tracking and stabilisation stuff // -------------------------------------- #if MOUNT == ENABLED // current_loc uses the baro/gps soloution for altitude rather than gps only. // mabe one could use current_loc for lat/lon too and eliminate g_gps alltogether? static AP_Mount camera_mount(¤t_loc, g_gps, ahrs, 0); #endif #if MOUNT2 == ENABLED // current_loc uses the baro/gps soloution for altitude rather than gps only. // mabe one could use current_loc for lat/lon too and eliminate g_gps alltogether? static AP_Mount camera_mount2(¤t_loc, g_gps, ahrs, 1); #endif //////////////////////////////////////////////////////////////////////////////// // AC_Fence library to reduce fly-aways //////////////////////////////////////////////////////////////////////////////// #if AC_FENCE == ENABLED AC_Fence fence(&inertial_nav); #endif //////////////////////////////////////////////////////////////////////////////// // Crop Sprayer //////////////////////////////////////////////////////////////////////////////// #if SPRAYER == ENABLED static AC_Sprayer sprayer(&inertial_nav); #endif //////////////////////////////////////////////////////////////////////////////// // EPM Cargo Griper //////////////////////////////////////////////////////////////////////////////// #if EPM_ENABLED == ENABLED static AP_EPM epm; #endif //////////////////////////////////////////////////////////////////////////////// // function definitions to keep compiler from complaining about undeclared functions //////////////////////////////////////////////////////////////////////////////// static void pre_arm_checks(bool display_failure); //////////////////////////////////////////////////////////////////////////////// // Top-level logic //////////////////////////////////////////////////////////////////////////////// // setup the var_info table AP_Param param_loader(var_info, WP_START_BYTE); #if MAIN_LOOP_RATE == 400 /* scheduler table for fast CPUs - all regular tasks apart from the fast_loop() should be listed here, along with how often they should be called (in 2.5ms units) and the maximum time they are expected to take (in microseconds) 1 = 400hz 2 = 200hz 4 = 100hz 8 = 50hz 20 = 20hz 40 = 10hz 133 = 3hz 400 = 1hz 4000 = 0.1hz */ static const AP_Scheduler::Task scheduler_tasks[] PROGMEM = { { rc_loop, 4, 10 }, { throttle_loop, 8, 45 }, { update_GPS, 8, 90 }, { update_batt_compass, 40, 72 }, { read_aux_switches, 40, 5 }, { arm_motors_check, 40, 1 }, { auto_trim, 40, 14 }, { update_altitude, 40, 100 }, { run_nav_updates, 40, 80 }, { update_thr_cruise, 40, 10 }, { three_hz_loop, 133, 9 }, { compass_accumulate, 8, 42 }, { barometer_accumulate, 8, 25 }, #if FRAME_CONFIG == HELI_FRAME { check_dynamic_flight, 8, 10 }, #endif { update_notify, 8, 10 }, { one_hz_loop, 400, 42 }, { crash_check, 40, 2 }, { gcs_check_input, 8, 550 }, { gcs_send_heartbeat, 400, 150 }, { gcs_send_deferred, 8, 720 }, { gcs_data_stream_send, 8, 950 }, #if COPTER_LEDS == ENABLED { update_copter_leds, 40, 5 }, #endif { update_mount, 8, 45 }, { ten_hz_logging_loop, 40, 30 }, { fifty_hz_logging_loop, 2, 22 }, { perf_update, 4000, 20 }, { read_receiver_rssi, 40, 5 }, #ifdef USERHOOK_FASTLOOP { userhook_FastLoop, 4, 10 }, #endif #ifdef USERHOOK_50HZLOOP { userhook_50Hz, 8, 10 }, #endif #ifdef USERHOOK_MEDIUMLOOP { userhook_MediumLoop, 40, 10 }, #endif #ifdef USERHOOK_SLOWLOOP { userhook_SlowLoop, 120, 10 }, #endif #ifdef USERHOOK_SUPERSLOWLOOP { userhook_SuperSlowLoop,400, 10 }, #endif }; #else /* scheduler table - all regular tasks apart from the fast_loop() should be listed here, along with how often they should be called (in 10ms units) and the maximum time they are expected to take (in microseconds) */ static const AP_Scheduler::Task scheduler_tasks[] PROGMEM = { { rc_loop, 1, 100 }, { throttle_loop, 2, 450 }, { update_GPS, 2, 900 }, { update_batt_compass, 10, 720 }, { read_aux_switches, 10, 50 }, { arm_motors_check, 10, 10 }, { auto_trim, 10, 140 }, { update_altitude, 10, 1000 }, { run_nav_updates, 10, 800 }, { update_thr_cruise, 1, 50 }, { three_hz_loop, 33, 90 }, { compass_accumulate, 2, 420 }, { barometer_accumulate, 2, 250 }, #if FRAME_CONFIG == HELI_FRAME { check_dynamic_flight, 2, 100 }, #endif { update_notify, 2, 100 }, { one_hz_loop, 100, 420 }, { crash_check, 10, 20 }, { gcs_check_input, 2, 550 }, { gcs_send_heartbeat, 100, 150 }, { gcs_send_deferred, 2, 720 }, { gcs_data_stream_send, 2, 950 }, { update_mount, 2, 450 }, { ten_hz_logging_loop, 10, 300 }, { fifty_hz_logging_loop, 2, 220 }, { perf_update, 1000, 200 }, { read_receiver_rssi, 10, 50 }, #ifdef USERHOOK_FASTLOOP { userhook_FastLoop, 1, 100 }, #endif #ifdef USERHOOK_50HZLOOP { userhook_50Hz, 2, 100 }, #endif #ifdef USERHOOK_MEDIUMLOOP { userhook_MediumLoop, 10, 100 }, #endif #ifdef USERHOOK_SLOWLOOP { userhook_SlowLoop, 30, 100 }, #endif #ifdef USERHOOK_SUPERSLOWLOOP { userhook_SuperSlowLoop,100, 100 }, #endif }; #endif void setup() { cliSerial = hal.console; // Load the default values of variables listed in var_info[]s AP_Param::setup_sketch_defaults(); init_ardupilot(); // initialise the main loop scheduler scheduler.init(&scheduler_tasks[0], sizeof(scheduler_tasks)/sizeof(scheduler_tasks[0])); } /* if the compass is enabled then try to accumulate a reading */ static void compass_accumulate(void) { if (g.compass_enabled) { compass.accumulate(); } } /* try to accumulate a baro reading */ static void barometer_accumulate(void) { barometer.accumulate(); } static void perf_update(void) { if (g.log_bitmask & MASK_LOG_PM) Log_Write_Performance(); if (scheduler.debug()) { cliSerial->printf_P(PSTR("PERF: %u/%u %lu\n"), (unsigned)perf_info_get_num_long_running(), (unsigned)perf_info_get_num_loops(), (unsigned long)perf_info_get_max_time()); } perf_info_reset(); pmTest1 = 0; } void loop() { // wait for an INS sample if (!ins.wait_for_sample(1000)) { Log_Write_Error(ERROR_SUBSYSTEM_MAIN, ERROR_CODE_MAIN_INS_DELAY); return; } uint32_t timer = micros(); // check loop time perf_info_check_loop_time(timer - fast_loopTimer); // used by PI Loops G_Dt = (float)(timer - fast_loopTimer) / 1000000.f; fast_loopTimer = timer; // for mainloop failure monitoring mainLoop_count++; // Execute the fast loop // --------------------- fast_loop(); // tell the scheduler one tick has passed scheduler.tick(); // run all the tasks that are due to run. Note that we only // have to call this once per loop, as the tasks are scheduled // in multiples of the main loop tick. So if they don't run on // the first call to the scheduler they won't run on a later // call until scheduler.tick() is called again uint32_t time_available = (timer + MAIN_LOOP_MICROS) - micros(); scheduler.run(time_available); } // Main loop - 100hz static void fast_loop() { // IMU DCM Algorithm // -------------------- read_AHRS(); // run low level rate controllers that only require IMU data attitude_control.rate_controller_run(); // write out the servo PWM values // ------------------------------ set_servos_4(); // Inertial Nav // -------------------- read_inertia(); // run the attitude controllers update_flight_mode(); // optical flow // -------------------- #if OPTFLOW == ENABLED if(g.optflow_enabled) { update_optical_flow(); } #endif // OPTFLOW == ENABLED } // rc_loops - reads user input from transmitter/receiver // called at 100hz static void rc_loop() { // Read radio and 3-position switch on radio // ----------------------------------------- read_radio(); read_control_switch(); } // throttle_loop - should be run at 50 hz // --------------------------- static void throttle_loop() { // get altitude and climb rate from inertial lib read_inertial_altitude(); // check if we've landed update_land_detector(); // check auto_armed status update_auto_armed(); #if FRAME_CONFIG == HELI_FRAME // update rotor speed heli_update_rotor_speed_targets(); // update trad heli swash plate movement heli_update_landing_swash(); #endif } // update_mount - update camera mount position // should be run at 50hz static void update_mount() { #if MOUNT == ENABLED // update camera mount's position camera_mount.update_mount_position(); #endif #if MOUNT2 == ENABLED // update camera mount's position camera_mount2.update_mount_position(); #endif #if CAMERA == ENABLED camera.trigger_pic_cleanup(); #endif } // update_batt_compass - read battery and compass // should be called at 10hz static void update_batt_compass(void) { // read battery before compass because it may be used for motor interference compensation read_battery(); if(g.compass_enabled) { // update compass with throttle value - used for compassmot compass.set_throttle((float)g.rc_3.servo_out/1000.0f); if (compass.read()) { compass.learn_offsets(); } // log compass information if (g.log_bitmask & MASK_LOG_COMPASS) { Log_Write_Compass(); } } // record throttle output throttle_integrator += g.rc_3.servo_out; } // ten_hz_logging_loop // should be run at 10hz static void ten_hz_logging_loop() { if (g.log_bitmask & MASK_LOG_ATTITUDE_MED) { Log_Write_Attitude(); } if (g.log_bitmask & MASK_LOG_RCIN) { DataFlash.Log_Write_RCIN(); } if (g.log_bitmask & MASK_LOG_RCOUT) { DataFlash.Log_Write_RCOUT(); } if (g.log_bitmask & MASK_LOG_NTUN && mode_requires_GPS(control_mode)) { Log_Write_Nav_Tuning(); } } // fifty_hz_logging_loop // should be run at 50hz static void fifty_hz_logging_loop() { #if HIL_MODE != HIL_MODE_DISABLED // HIL for a copter needs very fast update of the servo values gcs_send_message(MSG_RADIO_OUT); #endif #if HIL_MODE == HIL_MODE_DISABLED if (g.log_bitmask & MASK_LOG_ATTITUDE_FAST) { Log_Write_Attitude(); } if (g.log_bitmask & MASK_LOG_IMU) { DataFlash.Log_Write_IMU(ins); } #endif } // three_hz_loop - 3.3hz loop static void three_hz_loop() { // check if we've lost contact with the ground station failsafe_gcs_check(); #if AC_FENCE == ENABLED // check if we have breached a fence fence_check(); #endif // AC_FENCE_ENABLED #if SPRAYER == ENABLED sprayer.update(); #endif update_events(); if(g.radio_tuning > 0) tuning(); } // one_hz_loop - runs at 1Hz static void one_hz_loop() { if (g.log_bitmask != 0) { Log_Write_Data(DATA_AP_STATE, ap.value); } // log battery info to the dataflash if (g.log_bitmask & MASK_LOG_CURRENT) { Log_Write_Current(); } // perform pre-arm checks & display failures every 30 seconds static uint8_t pre_arm_display_counter = 15; pre_arm_display_counter++; if (pre_arm_display_counter >= 30) { pre_arm_checks(true); pre_arm_display_counter = 0; }else{ pre_arm_checks(false); } // auto disarm checks auto_disarm_check(); if (!motors.armed()) { // make it possible to change ahrs orientation at runtime during initial config ahrs.set_orientation(); // check the user hasn't updated the frame orientation motors.set_frame_orientation(g.frame_orientation); } // update assigned functions and enable auxiliar servos RC_Channel_aux::enable_aux_servos(); #if MOUNT == ENABLED camera_mount.update_mount_type(); #endif #if MOUNT2 == ENABLED camera_mount2.update_mount_type(); #endif check_usb_mux(); } // called at 100hz but data from sensor only arrives at 20 Hz #if OPTFLOW == ENABLED static void update_optical_flow(void) { static uint32_t last_of_update = 0; static uint8_t of_log_counter = 0; // if new data has arrived, process it if( optflow.last_update != last_of_update ) { last_of_update = optflow.last_update; optflow.update_position(ahrs.roll, ahrs.pitch, ahrs.sin_yaw(), ahrs.cos_yaw(), current_loc.alt); // updates internal lon and lat with estimation based on optical flow // write to log at 5hz of_log_counter++; if( of_log_counter >= 4 ) { of_log_counter = 0; if (g.log_bitmask & MASK_LOG_OPTFLOW) { Log_Write_Optflow(); } } } } #endif // OPTFLOW == ENABLED // called at 50hz static void update_GPS(void) { static uint32_t last_gps_reading; // time of last gps message static uint8_t ground_start_count = 10; // counter used to grab at least 10 reads before commiting the Home location bool report_gps_glitch; g_gps->update(); // logging and glitch protection run after every gps message if (g_gps->last_message_time_ms() != last_gps_reading) { last_gps_reading = g_gps->last_message_time_ms(); // log GPS message if (g.log_bitmask & MASK_LOG_GPS) { DataFlash.Log_Write_GPS(g_gps, current_loc.alt); } // run glitch protection and update AP_Notify if home has been initialised if (ap.home_is_set) { gps_glitch.check_position(); report_gps_glitch = (gps_glitch.glitching() && !ap.usb_connected); if (AP_Notify::flags.gps_glitching != report_gps_glitch) { if (gps_glitch.glitching()) { Log_Write_Error(ERROR_SUBSYSTEM_GPS, ERROR_CODE_GPS_GLITCH); }else{ Log_Write_Error(ERROR_SUBSYSTEM_GPS, ERROR_CODE_ERROR_RESOLVED); } AP_Notify::flags.gps_glitching = report_gps_glitch; } } } // checks to initialise home and take location based pictures if (g_gps->new_data && g_gps->status() >= GPS::GPS_OK_FIX_3D) { // clear new data flag g_gps->new_data = false; // check if we can initialise home yet if (!ap.home_is_set) { // if we have a 3d lock and valid location if(g_gps->status() >= GPS::GPS_OK_FIX_3D && g_gps->latitude != 0) { if( ground_start_count > 0 ) { ground_start_count--; }else{ // after 10 successful reads store home location // ap.home_is_set will be true so this will only happen once ground_start_count = 0; init_home(); // set system clock for log timestamps hal.util->set_system_clock(g_gps->time_epoch_usec()); if (g.compass_enabled) { // Set compass declination automatically compass.set_initial_location(g_gps->latitude, g_gps->longitude); } } }else{ // start again if we lose 3d lock ground_start_count = 10; } } #if CAMERA == ENABLED if (camera.update_location(current_loc) == true) { do_take_picture(); } #endif } // check for loss of gps failsafe_gps_check(); } static void init_simple_bearing() { // capture current cos_yaw and sin_yaw values simple_cos_yaw = ahrs.cos_yaw(); simple_sin_yaw = ahrs.sin_yaw(); // initialise super simple heading (i.e. heading towards home) to be 180 deg from simple mode heading super_simple_last_bearing = wrap_360_cd(ahrs.yaw_sensor+18000); super_simple_cos_yaw = simple_cos_yaw; super_simple_sin_yaw = simple_sin_yaw; // log the simple bearing to dataflash if (g.log_bitmask != 0) { Log_Write_Data(DATA_INIT_SIMPLE_BEARING, ahrs.yaw_sensor); } } // update_simple_mode - rotates pilot input if we are in simple mode void update_simple_mode(void) { float rollx, pitchx; // exit immediately if no new radio frame or not in simple mode if (ap.simple_mode == 0 || !ap.new_radio_frame) { return; } if (ap.simple_mode == 1) { // rotate roll, pitch input by -initial simple heading (i.e. north facing) rollx = g.rc_1.control_in*simple_cos_yaw - g.rc_2.control_in*simple_sin_yaw; pitchx = g.rc_1.control_in*simple_sin_yaw + g.rc_2.control_in*simple_cos_yaw; }else{ // rotate roll, pitch input by -super simple heading (reverse of heading to home) rollx = g.rc_1.control_in*super_simple_cos_yaw - g.rc_2.control_in*super_simple_sin_yaw; pitchx = g.rc_1.control_in*super_simple_sin_yaw + g.rc_2.control_in*super_simple_cos_yaw; } // rotate roll, pitch input from north facing to vehicle's perspective g.rc_1.control_in = rollx*ahrs.cos_yaw() + pitchx*ahrs.sin_yaw(); g.rc_2.control_in = -rollx*ahrs.sin_yaw() + pitchx*ahrs.cos_yaw(); } // update_super_simple_bearing - adjusts simple bearing based on location // should be called after home_bearing has been updated void update_super_simple_bearing(bool force_update) { // check if we are in super simple mode and at least 10m from home if(force_update || (ap.simple_mode == 2 && home_distance > SUPER_SIMPLE_RADIUS)) { // check the bearing to home has changed by at least 5 degrees if (labs(super_simple_last_bearing - home_bearing) > 500) { super_simple_last_bearing = home_bearing; float angle_rad = radians((super_simple_last_bearing+18000)/100); super_simple_cos_yaw = cosf(angle_rad); super_simple_sin_yaw = sinf(angle_rad); } } } static void read_AHRS(void) { // Perform IMU calculations and get attitude info //----------------------------------------------- #if HIL_MODE != HIL_MODE_DISABLED // update hil before ahrs update gcs_check_input(); #endif ahrs.update(); } // read baro and sonar altitude at 20hz static void update_altitude() { // read in baro altitude baro_alt = read_barometer(); // read in sonar altitude sonar_alt = read_sonar(); // write altitude info to dataflash logs if (g.log_bitmask & MASK_LOG_CTUN) { Log_Write_Control_Tuning(); } } static void tuning(){ // exit immediately when radio failsafe is invoked so tuning values are not set to zero if (failsafe.radio || failsafe.radio_counter != 0) { return; } tuning_value = (float)g.rc_6.control_in / 1000.0f; g.rc_6.set_range(g.radio_tuning_low,g.radio_tuning_high); // 0 to 1 switch(g.radio_tuning) { // Roll, Pitch tuning case CH6_STABILIZE_ROLL_PITCH_KP: g.p_stabilize_roll.kP(tuning_value); g.p_stabilize_pitch.kP(tuning_value); break; case CH6_RATE_ROLL_PITCH_KP: g.pid_rate_roll.kP(tuning_value); g.pid_rate_pitch.kP(tuning_value); break; case CH6_RATE_ROLL_PITCH_KI: g.pid_rate_roll.kI(tuning_value); g.pid_rate_pitch.kI(tuning_value); break; case CH6_RATE_ROLL_PITCH_KD: g.pid_rate_roll.kD(tuning_value); g.pid_rate_pitch.kD(tuning_value); break; // Yaw tuning case CH6_STABILIZE_YAW_KP: g.p_stabilize_yaw.kP(tuning_value); break; case CH6_YAW_RATE_KP: g.pid_rate_yaw.kP(tuning_value); break; case CH6_YAW_RATE_KD: g.pid_rate_yaw.kD(tuning_value); break; // Altitude and throttle tuning case CH6_ALTITUDE_HOLD_KP: g.p_alt_hold.kP(tuning_value); break; case CH6_THROTTLE_RATE_KP: g.p_throttle_rate.kP(tuning_value); break; case CH6_THROTTLE_ACCEL_KP: g.pid_throttle_accel.kP(tuning_value); break; case CH6_THROTTLE_ACCEL_KI: g.pid_throttle_accel.kI(tuning_value); break; case CH6_THROTTLE_ACCEL_KD: g.pid_throttle_accel.kD(tuning_value); break; // Loiter and navigation tuning case CH6_LOITER_POSITION_KP: g.p_loiter_pos.kP(tuning_value); break; case CH6_LOITER_RATE_KP: g.pid_loiter_rate_lon.kP(tuning_value); g.pid_loiter_rate_lat.kP(tuning_value); break; case CH6_LOITER_RATE_KI: g.pid_loiter_rate_lon.kI(tuning_value); g.pid_loiter_rate_lat.kI(tuning_value); break; case CH6_LOITER_RATE_KD: g.pid_loiter_rate_lon.kD(tuning_value); g.pid_loiter_rate_lat.kD(tuning_value); break; case CH6_WP_SPEED: // set waypoint navigation horizontal speed to 0 ~ 1000 cm/s wp_nav.set_horizontal_velocity(g.rc_6.control_in); break; // Acro roll pitch gain case CH6_ACRO_RP_KP: g.acro_rp_p = tuning_value; break; // Acro yaw gain case CH6_ACRO_YAW_KP: g.acro_yaw_p = tuning_value; break; case CH6_RELAY: if (g.rc_6.control_in > 525) relay.on(0); if (g.rc_6.control_in < 475) relay.off(0); break; #if FRAME_CONFIG == HELI_FRAME case CH6_HELI_EXTERNAL_GYRO: motors.ext_gyro_gain(g.rc_6.control_in); break; #endif case CH6_OPTFLOW_KP: g.pid_optflow_roll.kP(tuning_value); g.pid_optflow_pitch.kP(tuning_value); break; case CH6_OPTFLOW_KI: g.pid_optflow_roll.kI(tuning_value); g.pid_optflow_pitch.kI(tuning_value); break; case CH6_OPTFLOW_KD: g.pid_optflow_roll.kD(tuning_value); g.pid_optflow_pitch.kD(tuning_value); break; case CH6_AHRS_YAW_KP: ahrs._kp_yaw.set(tuning_value); break; case CH6_AHRS_KP: ahrs._kp.set(tuning_value); break; case CH6_INAV_TC: // To-Do: allowing tuning TC for xy and z separately inertial_nav.set_time_constant_xy(tuning_value); inertial_nav.set_time_constant_z(tuning_value); break; case CH6_DECLINATION: // set declination to +-20degrees compass.set_declination(ToRad((2.0f * g.rc_6.control_in - g.radio_tuning_high)/100.0f), false); // 2nd parameter is false because we do not want to save to eeprom because this would have a performance impact break; case CH6_CIRCLE_RATE: // set circle rate circle_nav.set_rate(g.rc_6.control_in/25-20); // allow approximately 45 degree turn rate in either direction break; case CH6_SONAR_GAIN: // set sonar gain g.sonar_gain.set(tuning_value); break; #if 0 // disabled for now - we need accessor functions case CH6_EKF_VERTICAL_POS: // EKF's baro vs accel (higher rely on accels more, baro impact is reduced) ahrs.get_NavEKF()._gpsVertPosNoise = tuning_value; break; case CH6_EKF_HORIZONTAL_POS: // EKF's gps vs accel (higher rely on accels more, gps impact is reduced) ahrs.get_NavEKF()._gpsHorizPosNoise = tuning_value; break; case CH6_EKF_ACCEL_NOISE: // EKF's accel noise (lower means trust accels more, gps & baro less) ahrs.get_NavEKF()._accNoise = tuning_value; break; #endif } } AP_HAL_MAIN();