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01df18b292
ardupilot/ArduPlane/ArduPlane.pde
Amilcar Lucas 01df18b292 Added camera and/or antenna mount support. 
It is fully configurable with the mission planner, there is no need to change
the source code to adapt to your setup.
It needs more testing, but the SIL is not working for me.
2011-10-31 22:55:58 +01:00

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/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
#define THISFIRMWARE "ArduPlane V2.24"
/*
Authors: Doug Weibel, Jose Julio, Jordi Munoz, Jason Short
Thanks to: Chris Anderson, HappyKillMore, Bill Premerlani, James Cohen, JB from rotorFX, Automatik, Fefenin, Peter Meister, Remzibi
Please contribute your ideas!
This firmware is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
*/
////////////////////////////////////////////////////////////////////////////////
// Header includes
////////////////////////////////////////////////////////////////////////////////
// AVR runtime
#include <avr/io.h>
#include <avr/eeprom.h>
#include <avr/pgmspace.h>
#include <math.h>
// Libraries
#include <FastSerial.h>
#include <AP_Common.h>
#include <APM_RC.h> // ArduPilot Mega RC Library
#include <AP_GPS.h> // ArduPilot GPS library
#include <Wire.h> // Arduino I2C lib
#include <SPI.h> // Arduino SPI lib
#include <DataFlash.h> // ArduPilot Mega Flash Memory Library
#include <AP_ADC.h> // ArduPilot Mega Analog to Digital Converter Library
#include <APM_BMP085.h> // ArduPilot Mega BMP085 Library
#include <AP_Compass.h> // ArduPilot Mega Magnetometer Library
#include <AP_Math.h> // ArduPilot Mega Vector/Matrix math Library
#include <AP_IMU.h> // ArduPilot Mega IMU Library
#include <AP_DCM.h> // ArduPilot Mega DCM Library
#include <PID.h> // PID library
#include <RC_Channel.h> // RC Channel Library
#include <AP_RangeFinder.h> // Range finder library
#include <ModeFilter.h>
#include <AP_Relay.h> // APM relay
#include <AP_Mount.h> // Camera/Antenna mount
#include <GCS_MAVLink.h> // MAVLink GCS definitions
#include <memcheck.h>
// Configuration
#include "config.h"
// Local modules
#include "defines.h"
#include "Parameters.h"
#include "GCS.h"
////////////////////////////////////////////////////////////////////////////////
// Serial ports
////////////////////////////////////////////////////////////////////////////////
//
// Note that FastSerial port buffers are allocated at ::begin time,
// so there is not much of a penalty to defining ports that we don't
// use.
//
FastSerialPort0(Serial); // FTDI/console
FastSerialPort1(Serial1); // GPS port
FastSerialPort3(Serial3); // Telemetry port
////////////////////////////////////////////////////////////////////////////////
// Parameters
////////////////////////////////////////////////////////////////////////////////
//
// Global parameters are all contained within the 'g' class.
//
static Parameters g;
////////////////////////////////////////////////////////////////////////////////
// prototypes
static void update_events(void);
////////////////////////////////////////////////////////////////////////////////
// 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;
// flight modes convenience array
static AP_Int8 *flight_modes = &g.flight_mode1;
#if HIL_MODE == HIL_MODE_DISABLED
// real sensors
static AP_ADC_ADS7844 adc;
static APM_BMP085_Class barometer;
static AP_Compass_HMC5843 compass(Parameters::k_param_compass);
// real GPS selection
#if GPS_PROTOCOL == GPS_PROTOCOL_AUTO
AP_GPS_Auto g_gps_driver(&Serial1, &g_gps);
#elif GPS_PROTOCOL == GPS_PROTOCOL_NMEA
AP_GPS_NMEA g_gps_driver(&Serial1);
#elif GPS_PROTOCOL == GPS_PROTOCOL_SIRF
AP_GPS_SIRF g_gps_driver(&Serial1);
#elif GPS_PROTOCOL == GPS_PROTOCOL_UBLOX
AP_GPS_UBLOX g_gps_driver(&Serial1);
#elif GPS_PROTOCOL == GPS_PROTOCOL_MTK
AP_GPS_MTK g_gps_driver(&Serial1);
#elif GPS_PROTOCOL == GPS_PROTOCOL_MTK16
AP_GPS_MTK16 g_gps_driver(&Serial1);
#elif GPS_PROTOCOL == GPS_PROTOCOL_NONE
AP_GPS_None g_gps_driver(NULL);
#else
#error Unrecognised GPS_PROTOCOL setting.
#endif // GPS PROTOCOL
#elif HIL_MODE == HIL_MODE_SENSORS
// sensor emulators
AP_ADC_HIL adc;
APM_BMP085_HIL_Class barometer;
AP_Compass_HIL compass;
AP_GPS_HIL g_gps_driver(NULL);
#elif HIL_MODE == HIL_MODE_ATTITUDE
AP_ADC_HIL adc;
AP_DCM_HIL dcm;
AP_GPS_HIL g_gps_driver(NULL);
AP_Compass_HIL compass; // never used
AP_IMU_Shim imu; // never used
#else
#error Unrecognised HIL_MODE setting.
#endif // HIL MODE
#if HIL_MODE != HIL_MODE_ATTITUDE
#if HIL_MODE != HIL_MODE_SENSORS
// Normal
AP_IMU_Oilpan imu(&adc, Parameters::k_param_IMU_calibration);
#else
// hil imu
AP_IMU_Shim imu;
#endif
// normal dcm
AP_DCM dcm(&imu, g_gps);
#endif
////////////////////////////////////////////////////////////////////////////////
// GCS selection
////////////////////////////////////////////////////////////////////////////////
//
GCS_MAVLINK gcs0(Parameters::k_param_streamrates_port0);
GCS_MAVLINK gcs3(Parameters::k_param_streamrates_port3);
////////////////////////////////////////////////////////////////////////////////
// SONAR selection
////////////////////////////////////////////////////////////////////////////////
//
ModeFilter sonar_mode_filter;
#if SONAR_TYPE == MAX_SONAR_XL
AP_RangeFinder_MaxsonarXL sonar(&adc, &sonar_mode_filter);//(SONAR_PORT, &adc);
#elif SONAR_TYPE == MAX_SONAR_LV
// XXX honestly I think these output the same values
// If someone knows, can they confirm it?
AP_RangeFinder_MaxsonarXL sonar(&adc, &sonar_mode_filter);//(SONAR_PORT, &adc);
#endif
////////////////////////////////////////////////////////////////////////////////
// Global variables
////////////////////////////////////////////////////////////////////////////////
byte control_mode = INITIALISING;
byte oldSwitchPosition; // for remembering the control mode switch
bool inverted_flight = false;
static const char *comma = ",";
static const char* flight_mode_strings[] = {
"Manual",
"Circle",
"Stabilize",
"",
"",
"FBW_A",
"FBW_B",
"",
"",
"",
"Auto",
"RTL",
"Loiter",
"Takeoff",
"Land"};
/* Radio values
Channel assignments
1 Ailerons (rudder if no ailerons)
2 Elevator
3 Throttle
4 Rudder (if we have ailerons)
5 Aux5
6 Aux6
7 Aux7
8 Aux8/Mode
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
*/
// Failsafe
// --------
static int failsafe; // track which type of failsafe is being processed
static bool ch3_failsafe;
static byte crash_timer;
// Radio
// -----
static uint16_t elevon1_trim = 1500; // TODO: handle in EEProm
static uint16_t elevon2_trim = 1500;
static uint16_t ch1_temp = 1500; // Used for elevon mixing
static uint16_t ch2_temp = 1500;
static int16_t rc_override[8] = {0,0,0,0,0,0,0,0};
static bool rc_override_active = false;
static uint32_t rc_override_fs_timer = 0;
static uint32_t ch3_failsafe_timer = 0;
// for elevons radio_in[CH_ROLL] and radio_in[CH_PITCH] are equivalent aileron and elevator, not left and right elevon
// LED output
// ----------
static bool GPS_light; // status of the GPS light
// GPS variables
// -------------
static const float t7 = 10000000.0; // used to scale GPS values for EEPROM storage
static float scaleLongUp = 1; // used to reverse longitude scaling
static float scaleLongDown = 1; // used to reverse longitude scaling
static byte ground_start_count = 5; // have we achieved first lock and set Home?
static int ground_start_avg; // 5 samples to avg speed for ground start
static bool GPS_enabled = false; // used to quit "looking" for gps with auto-detect if none present
// Location & Navigation
// ---------------------
const float radius_of_earth = 6378100; // meters
const float gravity = 9.81; // meters/ sec^2
static long nav_bearing; // deg * 100 : 0 to 360 current desired bearing to navigate
static long target_bearing; // deg * 100 : 0 to 360 location of the plane to the target
static long crosstrack_bearing; // deg * 100 : 0 to 360 desired angle of plane to target
static float nav_gain_scaler = 1; // Gain scaling for headwind/tailwind TODO: why does this variable need to be initialized to 1?
static long hold_course = -1; // deg * 100 dir of plane
static byte command_index; // current command memory location
static byte nav_command_index; // active nav command memory location
static byte non_nav_command_index; // active non-nav command memory location
static byte nav_command_ID = NO_COMMAND; // active nav command ID
static byte non_nav_command_ID = NO_COMMAND; // active non-nav command ID
// Airspeed
// --------
static int airspeed; // m/s * 100
static int airspeed_nudge; // m/s * 100 : additional airspeed based on throttle stick position in top 1/2 of range
static float airspeed_error; // m/s * 100
static float airspeed_fbwB; // m/s * 100
static long energy_error; // energy state error (kinetic + potential) for altitude hold
static long airspeed_energy_error; // kinetic portion of energy error
// Location Errors
// ---------------
static long bearing_error; // deg * 100 : 0 to 36000
static long altitude_error; // meters * 100 we are off in altitude
static float crosstrack_error; // meters we are off trackline
// Battery Sensors
// ---------------
static float battery_voltage = LOW_VOLTAGE * 1.05; // Battery Voltage of total battery, initialized above threshold for filter
static float battery_voltage1 = LOW_VOLTAGE * 1.05; // Battery Voltage of cell 1, initialized above threshold for filter
static float battery_voltage2 = LOW_VOLTAGE * 1.05; // Battery Voltage of cells 1 + 2, initialized above threshold for filter
static float battery_voltage3 = LOW_VOLTAGE * 1.05; // Battery Voltage of cells 1 + 2+3, initialized above threshold for filter
static float battery_voltage4 = LOW_VOLTAGE * 1.05; // Battery Voltage of cells 1 + 2+3 + 4, initialized above threshold for filter
static float current_amps;
static float current_total;
// Airspeed Sensors
// ----------------
static float airspeed_raw; // Airspeed Sensor - is a float to better handle filtering
static int airspeed_pressure; // airspeed as a pressure value
// Barometer Sensor variables
// --------------------------
static unsigned long abs_pressure;
// Altitude Sensor variables
// ----------------------
static int sonar_alt;
// flight mode specific
// --------------------
static bool takeoff_complete = true; // Flag for using gps ground course instead of IMU yaw. Set false when takeoff command processes.
static bool land_complete;
static long takeoff_altitude;
// static int landing_distance; // meters;
static int landing_pitch; // pitch for landing set by commands
static int takeoff_pitch;
// Loiter management
// -----------------
static long old_target_bearing; // deg * 100
static int loiter_total; // deg : how many times to loiter * 360
static int loiter_delta; // deg : how far we just turned
static int loiter_sum; // deg : how far we have turned around a waypoint
static long loiter_time; // millis : when we started LOITER mode
static int loiter_time_max; // millis : how long to stay in LOITER mode
// these are the values for navigation control functions
// ----------------------------------------------------
static long nav_roll; // deg * 100 : target roll angle
static long nav_pitch; // deg * 100 : target pitch angle
static int throttle_nudge = 0; // 0-(throttle_max - throttle_cruise) : throttle nudge in Auto mode using top 1/2 of throttle stick travel
// Waypoints
// ---------
static long wp_distance; // meters - distance between plane and next waypoint
static long wp_totalDistance; // meters - distance between old and next waypoint
// repeating event control
// -----------------------
static byte event_id; // what to do - see defines
static long event_timer; // when the event was asked for in ms
static uint16_t event_delay; // how long to delay the next firing of event in millis
static int event_repeat = 0; // how many times to cycle : -1 (or -2) = forever, 2 = do one cycle, 4 = do two cycles
static int event_value; // per command value, such as PWM for servos
static int event_undo_value; // the value used to cycle events (alternate value to event_value)
// delay command
// --------------
static long condition_value; // used in condition commands (eg delay, change alt, etc.)
static long condition_start;
static int condition_rate;
// 3D Location vectors
// -------------------
static struct Location home; // home location
static struct Location prev_WP; // last waypoint
static struct Location current_loc; // current location
static struct Location next_WP; // next waypoint
static struct Location guided_WP; // guided mode waypoint
static struct Location next_nav_command; // command preloaded
static struct Location next_nonnav_command; // command preloaded
static long target_altitude; // used for altitude management between waypoints
static long offset_altitude; // used for altitude management between waypoints
static bool home_is_set; // Flag for if we have g_gps lock and have set the home location
// IMU variables
// -------------
static float G_Dt = 0.02; // Integration time for the gyros (DCM algorithm)
// Performance monitoring
// ----------------------
static long perf_mon_timer; // Metric based on accel gain deweighting
static int G_Dt_max = 0; // Max main loop cycle time in milliseconds
static int gps_fix_count = 0;
static int pmTest1 = 0;
// System Timers
// --------------
static unsigned long fast_loopTimer; // Time in miliseconds of main control loop
static unsigned long fast_loopTimeStamp; // Time Stamp when fast loop was complete
static uint8_t delta_ms_fast_loop; // Delta Time in miliseconds
static int mainLoop_count;
static unsigned long medium_loopTimer; // Time in miliseconds of medium loop
static byte medium_loopCounter; // Counters for branching from main control loop to slower loops
static uint8_t delta_ms_medium_loop;
static byte slow_loopCounter;
static byte superslow_loopCounter;
static byte counter_one_herz;
static unsigned long nav_loopTimer; // used to track the elapsed time for GPS nav
static unsigned long dTnav; // Delta Time in milliseconds for navigation computations
static float load; // % MCU cycles used
AP_Relay relay;
// Camera/Antenna mount tracking and stabilisation stuff
// --------------------------------------
#if MOUNT == ENABLED
AP_Mount camera_mount(g_gps, &dcm);
#endif
////////////////////////////////////////////////////////////////////////////////
// Top-level logic
////////////////////////////////////////////////////////////////////////////////
void setup() {
memcheck_init();
init_ardupilot();
}
void loop()
{
// We want this to execute at 50Hz if possible
// -------------------------------------------
if (millis()-fast_loopTimer > 19) {
delta_ms_fast_loop = millis() - fast_loopTimer;
load = (float)(fast_loopTimeStamp - fast_loopTimer)/delta_ms_fast_loop;
G_Dt = (float)delta_ms_fast_loop / 1000.f;
fast_loopTimer = millis();
mainLoop_count++;
// Execute the fast loop
// ---------------------
fast_loop();
// Execute the medium loop
// -----------------------
medium_loop();
counter_one_herz++;
if(counter_one_herz == 50){
one_second_loop();
counter_one_herz = 0;
}
if (millis() - perf_mon_timer > 20000) {
if (mainLoop_count != 0) {
if (g.log_bitmask & MASK_LOG_PM)
Log_Write_Performance();
resetPerfData();
}
}
fast_loopTimeStamp = millis();
}
}
// Main loop 50Hz
static void fast_loop()
{
// This is the fast loop - we want it to execute at 50Hz if possible
// -----------------------------------------------------------------
if (delta_ms_fast_loop > G_Dt_max)
G_Dt_max = delta_ms_fast_loop;
// Read radio
// ----------
read_radio();
// try to send any deferred messages if the serial port now has
// some space available
gcs_send_message(MSG_RETRY_DEFERRED);
// check for loss of control signal failsafe condition
// ------------------------------------
check_short_failsafe();
// Read Airspeed
// -------------
if (g.airspeed_enabled == true) {
#if HIL_MODE != HIL_MODE_ATTITUDE
read_airspeed();
#endif
} else if (g.airspeed_enabled == true && HIL_MODE == HIL_MODE_ATTITUDE) {
calc_airspeed_errors();
}
#if HIL_MODE == HIL_MODE_SENSORS
// update hil before dcm update
gcs_update();
#endif
dcm.update_DCM();
// uses the yaw from the DCM to give more accurate turns
calc_bearing_error();
# if HIL_MODE == HIL_MODE_DISABLED
if (g.log_bitmask & MASK_LOG_ATTITUDE_FAST)
Log_Write_Attitude((int)dcm.roll_sensor, (int)dcm.pitch_sensor, (uint16_t)dcm.yaw_sensor);
if (g.log_bitmask & MASK_LOG_RAW)
Log_Write_Raw();
#endif
// inertial navigation
// ------------------
#if INERTIAL_NAVIGATION == ENABLED
// TODO: implement inertial nav function
inertialNavigation();
#endif
// custom code/exceptions for flight modes
// ---------------------------------------
update_current_flight_mode();
// apply desired roll, pitch and yaw to the plane
// ----------------------------------------------
if (control_mode > MANUAL)
stabilize();
// write out the servo PWM values
// ------------------------------
set_servos();
// XXX is it appropriate to be doing the comms below on the fast loop?
gcs_update();
gcs_data_stream_send(45,1000);
}
static void medium_loop()
{
#if MOUNT == ENABLED
camera_mount.update_mount_position();
#endif
// This is the start of the medium (10 Hz) loop pieces
// -----------------------------------------
switch(medium_loopCounter) {
// This case deals with the GPS
//-------------------------------
case 0:
medium_loopCounter++;
if(GPS_enabled) update_GPS();
#if HIL_MODE != HIL_MODE_ATTITUDE
if(g.compass_enabled){
compass.read(); // Read magnetometer
compass.calculate(dcm.get_dcm_matrix()); // Calculate heading
compass.null_offsets(dcm.get_dcm_matrix());
}
#endif
/*{
Serial.print(dcm.roll_sensor, DEC); Serial.printf_P(PSTR("\t"));
Serial.print(dcm.pitch_sensor, DEC); Serial.printf_P(PSTR("\t"));
Serial.print(dcm.yaw_sensor, DEC); Serial.printf_P(PSTR("\t"));
Vector3f tempaccel = imu.get_accel();
Serial.print(tempaccel.x, DEC); Serial.printf_P(PSTR("\t"));
Serial.print(tempaccel.y, DEC); Serial.printf_P(PSTR("\t"));
Serial.println(tempaccel.z, DEC);
}*/
break;
// This case performs some navigation computations
//------------------------------------------------
case 1:
medium_loopCounter++;
if(g_gps->new_data){
g_gps->new_data = false;
dTnav = millis() - nav_loopTimer;
nav_loopTimer = millis();
// calculate the plane's desired bearing
// -------------------------------------
navigate();
}
break;
// command processing
//------------------------------
case 2:
medium_loopCounter++;
// Read altitude from sensors
// ------------------
update_alt();
if(g.sonar_enabled) sonar_alt = sonar.read();
// altitude smoothing
// ------------------
if (control_mode != FLY_BY_WIRE_B)
calc_altitude_error();
// perform next command
// --------------------
update_commands();
break;
// This case deals with sending high rate telemetry
//-------------------------------------------------
case 3:
medium_loopCounter++;
#if HIL_MODE != HIL_MODE_ATTITUDE
if ((g.log_bitmask & MASK_LOG_ATTITUDE_MED) && !(g.log_bitmask & MASK_LOG_ATTITUDE_FAST))
Log_Write_Attitude((int)dcm.roll_sensor, (int)dcm.pitch_sensor, (uint16_t)dcm.yaw_sensor);
if (g.log_bitmask & MASK_LOG_CTUN)
Log_Write_Control_Tuning();
#endif
if (g.log_bitmask & MASK_LOG_NTUN)
Log_Write_Nav_Tuning();
if (g.log_bitmask & MASK_LOG_GPS)
Log_Write_GPS(g_gps->time, current_loc.lat, current_loc.lng, g_gps->altitude, current_loc.alt, (long) g_gps->ground_speed, g_gps->ground_course, g_gps->fix, g_gps->num_sats);
// send all requested output streams with rates requested
// between 5 and 45 Hz
gcs_data_stream_send(5,45);
break;
// This case controls the slow loop
//---------------------------------
case 4:
medium_loopCounter = 0;
delta_ms_medium_loop = millis() - medium_loopTimer;
medium_loopTimer = millis();
if (g.battery_monitoring != 0){
read_battery();
}
slow_loop();
break;
}
}
static void slow_loop()
{
// This is the slow (3 1/3 Hz) loop pieces
//----------------------------------------
switch (slow_loopCounter){
case 0:
slow_loopCounter++;
check_long_failsafe();
superslow_loopCounter++;
if(superslow_loopCounter >=200) { // 200 = Execute every minute
#if HIL_MODE != HIL_MODE_ATTITUDE
if(g.compass_enabled) {
compass.save_offsets();
}
#endif
superslow_loopCounter = 0;
}
break;
case 1:
slow_loopCounter++;
// Read 3-position switch on radio
// -------------------------------
read_control_switch();
// Read Control Surfaces/Mix switches
// ----------------------------------
update_servo_switches();
update_aux_servo_function(&g.rc_5, &g.rc_6, &g.rc_7, &g.rc_8);
#if MOUNT == ENABLED
camera_mount.update_mount_type();
#endif
break;
case 2:
slow_loopCounter = 0;
update_events();
mavlink_system.sysid = g.sysid_this_mav; // This is just an ugly hack to keep mavlink_system.sysid sync'd with our parameter
gcs_data_stream_send(3,5);
break;
}
}
static void one_second_loop()
{
if (g.log_bitmask & MASK_LOG_CUR)
Log_Write_Current();
// send a heartbeat
gcs_send_message(MSG_HEARTBEAT);
gcs_data_stream_send(1,3);
}
static void update_GPS(void)
{
g_gps->update();
update_GPS_light();
if (g_gps->new_data && g_gps->fix) {
// for performance
// ---------------
gps_fix_count++;
if(ground_start_count > 1){
ground_start_count--;
ground_start_avg += g_gps->ground_speed;
} else if (ground_start_count == 1) {
// We countdown N number of good GPS fixes
// so that the altitude is more accurate
// -------------------------------------
if (current_loc.lat == 0) {
ground_start_count = 5;
} else {
if(ENABLE_AIR_START == 1 && (ground_start_avg / 5) < SPEEDFILT){
startup_ground();
if (g.log_bitmask & MASK_LOG_CMD)
Log_Write_Startup(TYPE_GROUNDSTART_MSG);
init_home();
} else if (ENABLE_AIR_START == 0) {
init_home();
}
ground_start_count = 0;
}
}
current_loc.lng = g_gps->longitude; // Lon * 10**7
current_loc.lat = g_gps->latitude; // Lat * 10**7
}
}
static void update_current_flight_mode(void)
{
if(control_mode == AUTO){
crash_checker();
switch(nav_command_ID){
case MAV_CMD_NAV_TAKEOFF:
if (hold_course > -1) {
calc_nav_roll();
} else {
nav_roll = 0;
}
if (g.airspeed_enabled == true)
{
calc_nav_pitch();
if (nav_pitch < (long)takeoff_pitch) nav_pitch = (long)takeoff_pitch;
} else {
nav_pitch = (long)((float)g_gps->ground_speed / (float)g.airspeed_cruise * (float)takeoff_pitch * 0.5);
nav_pitch = constrain(nav_pitch, 500l, (long)takeoff_pitch);
}
g.channel_throttle.servo_out = g.throttle_max; //TODO: Replace with THROTTLE_TAKEOFF or other method of controlling throttle
// What is the case for doing something else? Why wouldn't you want max throttle for TO?
// ******************************
break;
case MAV_CMD_NAV_LAND:
calc_nav_roll();
if (g.airspeed_enabled == true){
calc_nav_pitch();
calc_throttle();
}else{
calc_nav_pitch(); // calculate nav_pitch just to use for calc_throttle
calc_throttle(); // throttle based on altitude error
nav_pitch = landing_pitch; // pitch held constant
}
if (land_complete){
g.channel_throttle.servo_out = 0;
}
break;
default:
hold_course = -1;
calc_nav_roll();
calc_nav_pitch();
calc_throttle();
break;
}
}else{
switch(control_mode){
case RTL:
case LOITER:
case GUIDED:
hold_course = -1;
crash_checker();
calc_nav_roll();
calc_nav_pitch();
calc_throttle();
break;
case FLY_BY_WIRE_A:
// set nav_roll and nav_pitch using sticks
nav_roll = g.channel_roll.norm_input() * g.roll_limit;
nav_pitch = g.channel_pitch.norm_input() * (-1) * g.pitch_limit_min;
// We use pitch_min above because it is usually greater magnitude then pitch_max. -1 is to compensate for its sign.
nav_pitch = constrain(nav_pitch, -3000, 3000); // trying to give more pitch authority
if (inverted_flight) nav_pitch = -nav_pitch;
break;
case FLY_BY_WIRE_B:
// Substitute stick inputs for Navigation control output
// We use g.pitch_limit_min because its magnitude is
// normally greater than g.pitch_limit_max
nav_roll = g.channel_roll.norm_input() * g.roll_limit;
altitude_error = g.channel_pitch.norm_input() * g.pitch_limit_min;
if ((current_loc.alt>=home.alt+g.FBWB_min_altitude) || (g.FBWB_min_altitude == -1)) {
altitude_error = g.channel_pitch.norm_input() * g.pitch_limit_min;
} else {
if (g.channel_pitch.norm_input()<0)
altitude_error =( (home.alt + g.FBWB_min_altitude) - current_loc.alt) + g.channel_pitch.norm_input() * g.pitch_limit_min ;
else altitude_error =( (home.alt + g.FBWB_min_altitude) - current_loc.alt) ;
}
if (g.airspeed_enabled == true)
{
airspeed_fbwB = ((int)(g.flybywire_airspeed_max -
g.flybywire_airspeed_min) *
g.channel_throttle.servo_out) +
((int)g.flybywire_airspeed_min * 100);
airspeed_energy_error = (long)(((long)airspeed_fbwB *
(long)airspeed_fbwB) -
((long)airspeed * (long)airspeed))/20000;
airspeed_error = (airspeed_error - airspeed);
}
calc_throttle();
calc_nav_pitch();
break;
case STABILIZE:
nav_roll = 0;
nav_pitch = 0;
// throttle is passthrough
break;
case CIRCLE:
// we have no GPS installed and have lost radio contact
// or we just want to fly around in a gentle circle w/o GPS
// ----------------------------------------------------
nav_roll = g.roll_limit / 3;
nav_pitch = 0;
if (failsafe != FAILSAFE_NONE){
g.channel_throttle.servo_out = g.throttle_cruise;
}
break;
case MANUAL:
// servo_out is for Sim control only
// ---------------------------------
g.channel_roll.servo_out = g.channel_roll.pwm_to_angle();
g.channel_pitch.servo_out = g.channel_pitch.pwm_to_angle();
g.channel_rudder.servo_out = g.channel_rudder.pwm_to_angle();
break;
//roll: -13788.000, pitch: -13698.000, thr: 0.000, rud: -13742.000
}
}
}
static void update_navigation()
{
// wp_distance is in ACTUAL meters, not the *100 meters we get from the GPS
// ------------------------------------------------------------------------
// distance and bearing calcs only
if(control_mode == AUTO){
verify_commands();
}else{
switch(control_mode){
case LOITER:
case RTL:
case GUIDED:
update_loiter();
calc_bearing_error();
break;
}
}
}
static void update_alt()
{
#if HIL_MODE == HIL_MODE_ATTITUDE
current_loc.alt = g_gps->altitude;
#else
// this function is in place to potentially add a sonar sensor in the future
//altitude_sensor = BARO;
current_loc.alt = (1 - g.altitude_mix) * g_gps->altitude; // alt_MSL centimeters (meters * 100)
current_loc.alt += g.altitude_mix * (read_barometer() + home.alt);
#endif
// Calculate new climb rate
//if(medium_loopCounter == 0 && slow_loopCounter == 0)
// add_altitude_data(millis() / 100, g_gps->altitude / 10);
}
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