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335 lines
10 KiB
C
335 lines
10 KiB
C
/**
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******************************************************************************
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* @addtogroup OpenPilotModules OpenPilot Modules
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* @{
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* @addtogroup Autotuning module
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* @brief Reads from @ref ManualControlCommand and fakes a rate mode while
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* toggling the channels to relay mode
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* @{
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*
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* @file autotune.c
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2012.
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* @brief Module to handle all comms to the AHRS on a periodic basis.
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*
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* @see The GNU Public License (GPL) Version 3
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*
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******************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* Input objects: None, takes sensor data via pios
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* Output objects: @ref AttitudeRaw @ref AttitudeActual
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*
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* This module computes an attitude estimate from the sensor data
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*
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* The module executes in its own thread.
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*
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* UAVObjects are automatically generated by the UAVObjectGenerator from
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* the object definition XML file.
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*
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* Modules have no API, all communication to other modules is done through UAVObjects.
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* However modules may use the API exposed by shared libraries.
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* See the OpenPilot wiki for more details.
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* http://www.openpilot.org/OpenPilot_Application_Architecture
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*
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*/
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#include "openpilot.h"
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#include "flightstatus.h"
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#include "hwsettings.h"
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#include "manualcontrolcommand.h"
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#include "manualcontrolsettings.h"
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#include "relaytuning.h"
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#include "relaytuningsettings.h"
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#include "stabilizationdesired.h"
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#include "stabilizationsettings.h"
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#include <pios_board_info.h>
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// Private constants
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#define STACK_SIZE_BYTES 1024
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#define TASK_PRIORITY (tskIDLE_PRIORITY+2)
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// Private types
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enum AUTOTUNE_STATE {AT_INIT, AT_START, AT_ROLL, AT_PITCH, AT_FINISHED, AT_SET};
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// Private variables
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static xTaskHandle taskHandle;
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static bool autotuneEnabled;
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// Private functions
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static void AutotuneTask(void *parameters);
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static void update_stabilization_settings();
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/**
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* Initialise the module, called on startup
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* \returns 0 on success or -1 if initialisation failed
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*/
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int32_t AutotuneInitialize(void)
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{
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// Create a queue, connect to manual control command and flightstatus
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#ifdef MODULE_AUTOTUNE_BUILTIN
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autotuneEnabled = true;
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#else
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HwSettingsInitialize();
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uint8_t optionalModules[HWSETTINGS_OPTIONALMODULES_NUMELEM];
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HwSettingsOptionalModulesGet(optionalModules);
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if (optionalModules[HWSETTINGS_OPTIONALMODULES_AUTOTUNE] == HWSETTINGS_OPTIONALMODULES_ENABLED)
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autotuneEnabled = true;
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else
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autotuneEnabled = false;
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#endif
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return 0;
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}
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/**
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* Initialise the module, called on startup
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* \returns 0 on success or -1 if initialisation failed
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*/
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int32_t AutotuneStart(void)
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{
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// Start main task if it is enabled
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if(autotuneEnabled) {
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xTaskCreate(AutotuneTask, (signed char *)"Autotune", STACK_SIZE_BYTES/4, NULL, TASK_PRIORITY, &taskHandle);
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TaskMonitorAdd(TASKINFO_RUNNING_AUTOTUNE, taskHandle);
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PIOS_WDG_RegisterFlag(PIOS_WDG_AUTOTUNE);
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}
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return 0;
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}
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MODULE_INITCALL(AutotuneInitialize, AutotuneStart)
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/**
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* Module thread, should not return.
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*/
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static void AutotuneTask(void *parameters)
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{
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//AlarmsClear(SYSTEMALARMS_ALARM_ATTITUDE);
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enum AUTOTUNE_STATE state = AT_INIT;
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portTickType lastUpdateTime = xTaskGetTickCount();
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while(1) {
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PIOS_WDG_UpdateFlag(PIOS_WDG_AUTOTUNE);
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// TODO:
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// 1. get from queue
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// 2. based on whether it is flightstatus or manualcontrol
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portTickType diffTime;
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const uint32_t PREPARE_TIME = 2000;
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const uint32_t MEAURE_TIME = 30000;
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FlightStatusData flightStatus;
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FlightStatusGet(&flightStatus);
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// Only allow this module to run when autotuning
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if (flightStatus.FlightMode != FLIGHTSTATUS_FLIGHTMODE_AUTOTUNE) {
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state = AT_INIT;
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vTaskDelay(50);
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continue;
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}
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StabilizationDesiredData stabDesired;
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StabilizationDesiredGet(&stabDesired);
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StabilizationSettingsData stabSettings;
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StabilizationSettingsGet(&stabSettings);
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ManualControlSettingsData manualSettings;
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ManualControlSettingsGet(&manualSettings);
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ManualControlCommandData manualControl;
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ManualControlCommandGet(&manualControl);
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RelayTuningSettingsData relaySettings;
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RelayTuningSettingsGet(&relaySettings);
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bool rate = relaySettings.Mode == RELAYTUNINGSETTINGS_MODE_RATE;
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if (rate) { // rate mode
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stabDesired.StabilizationMode[STABILIZATIONDESIRED_STABILIZATIONMODE_ROLL] = STABILIZATIONDESIRED_STABILIZATIONMODE_RATE;
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stabDesired.StabilizationMode[STABILIZATIONDESIRED_STABILIZATIONMODE_PITCH] = STABILIZATIONDESIRED_STABILIZATIONMODE_RATE;
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stabDesired.Roll = manualControl.Roll * stabSettings.ManualRate[STABILIZATIONSETTINGS_MANUALRATE_ROLL];
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stabDesired.Pitch = manualControl.Pitch * stabSettings.ManualRate[STABILIZATIONSETTINGS_MANUALRATE_PITCH];
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} else {
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stabDesired.StabilizationMode[STABILIZATIONDESIRED_STABILIZATIONMODE_ROLL] = STABILIZATIONDESIRED_STABILIZATIONMODE_ATTITUDE;
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stabDesired.StabilizationMode[STABILIZATIONDESIRED_STABILIZATIONMODE_PITCH] = STABILIZATIONDESIRED_STABILIZATIONMODE_ATTITUDE;
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stabDesired.Roll = manualControl.Roll * stabSettings.RollMax;
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stabDesired.Pitch = manualControl.Pitch * stabSettings.PitchMax;
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}
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stabDesired.StabilizationMode[STABILIZATIONDESIRED_STABILIZATIONMODE_YAW] = STABILIZATIONDESIRED_STABILIZATIONMODE_RATE;
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stabDesired.Yaw = manualControl.Yaw * stabSettings.ManualRate[STABILIZATIONSETTINGS_MANUALRATE_YAW];
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stabDesired.Throttle = manualControl.Throttle;
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switch(state) {
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case AT_INIT:
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lastUpdateTime = xTaskGetTickCount();
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// Only start when armed and flying
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if (flightStatus.Armed == FLIGHTSTATUS_ARMED_ARMED && stabDesired.Throttle > 0)
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state = AT_START;
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break;
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case AT_START:
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diffTime = xTaskGetTickCount() - lastUpdateTime;
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// Spend the first block of time in normal rate mode to get airborne
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if (diffTime > PREPARE_TIME) {
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state = AT_ROLL;
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lastUpdateTime = xTaskGetTickCount();
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}
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break;
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case AT_ROLL:
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diffTime = xTaskGetTickCount() - lastUpdateTime;
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// Run relay mode on the roll axis for the measurement time
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stabDesired.StabilizationMode[STABILIZATIONDESIRED_STABILIZATIONMODE_ROLL] = rate ? STABILIZATIONDESIRED_STABILIZATIONMODE_RELAYRATE :
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STABILIZATIONDESIRED_STABILIZATIONMODE_RELAYATTITUDE;
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if (diffTime > MEAURE_TIME) { // Move on to next state
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state = AT_PITCH;
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lastUpdateTime = xTaskGetTickCount();
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}
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break;
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case AT_PITCH:
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diffTime = xTaskGetTickCount() - lastUpdateTime;
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// Run relay mode on the pitch axis for the measurement time
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stabDesired.StabilizationMode[STABILIZATIONDESIRED_STABILIZATIONMODE_PITCH] = rate ? STABILIZATIONDESIRED_STABILIZATIONMODE_RELAYRATE :
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STABILIZATIONDESIRED_STABILIZATIONMODE_RELAYATTITUDE;
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if (diffTime > MEAURE_TIME) { // Move on to next state
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state = AT_FINISHED;
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lastUpdateTime = xTaskGetTickCount();
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}
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break;
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case AT_FINISHED:
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// Wait until disarmed and landed before updating the settings
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if (flightStatus.Armed == FLIGHTSTATUS_ARMED_DISARMED && stabDesired.Throttle <= 0)
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state = AT_SET;
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break;
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case AT_SET:
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update_stabilization_settings();
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state = AT_INIT;
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break;
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default:
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// Set an alarm or some shit like that
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break;
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}
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StabilizationDesiredSet(&stabDesired);
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vTaskDelay(10);
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}
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}
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/**
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* Called after measuring roll and pitch to update the
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* stabilization settings
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*
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* takes in @ref RelayTuning and outputs @ref StabilizationSettings
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*/
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static void update_stabilization_settings()
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{
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RelayTuningData relayTuning;
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RelayTuningGet(&relayTuning);
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RelayTuningSettingsData relaySettings;
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RelayTuningSettingsGet(&relaySettings);
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StabilizationSettingsData stabSettings;
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StabilizationSettingsGet(&stabSettings);
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// Eventually get these settings from RelayTuningSettings
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const float gain_ratio_r = 1.0f / 3.0f;
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const float zero_ratio_r = 1.0f / 3.0f;
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const float gain_ratio_p = 1.0f / 5.0f;
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const float zero_ratio_p = 1.0f / 5.0f;
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// For now just run over roll and pitch
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for (uint i = 0; i < 2; i++) {
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float wu = 1000.0f * 2 * M_PI / relayTuning.Period[i]; // ultimate freq = output osc freq (rad/s)
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float wc = wu * gain_ratio_r; // target openloop crossover frequency (rad/s)
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float zc = wc * zero_ratio_r; // controller zero location (rad/s)
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float kpu = 4.0f / M_PI / relayTuning.Gain[i]; // ultimate gain, i.e. the proportional gain for instablity
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float kp = kpu * gain_ratio_r; // proportional gain
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float ki = zc * kp; // integral gain
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// Now calculate gains for the next loop out knowing it is the integral of
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// the inner loop -- the plant is position/velocity = scale*1/s
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float wc2 = wc * gain_ratio_p; // crossover of the attitude loop
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float kp2 = wc2; // kp of attitude
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float ki2 = wc2 * zero_ratio_p * kp2; // ki of attitude
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switch(i) {
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case 0: // roll
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stabSettings.RollRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_KP] = kp;
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stabSettings.RollRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_KI] = ki;
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stabSettings.RollPI[STABILIZATIONSETTINGS_ROLLPI_KP] = kp2;
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stabSettings.RollPI[STABILIZATIONSETTINGS_ROLLPI_KI] = ki2;
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break;
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case 1: // Pitch
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stabSettings.PitchRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_KP] = kp;
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stabSettings.PitchRatePID[STABILIZATIONSETTINGS_ROLLRATEPID_KI] = ki;
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stabSettings.PitchPI[STABILIZATIONSETTINGS_ROLLPI_KP] = kp2;
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stabSettings.PitchPI[STABILIZATIONSETTINGS_ROLLPI_KI] = ki2;
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break;
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default:
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// Oh shit oh shit oh shit
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break;
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}
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}
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switch(relaySettings.Behavior) {
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case RELAYTUNINGSETTINGS_BEHAVIOR_MEASURE:
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// Just measure, don't update the stab settings
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break;
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case RELAYTUNINGSETTINGS_BEHAVIOR_COMPUTE:
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StabilizationSettingsSet(&stabSettings);
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break;
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case RELAYTUNINGSETTINGS_BEHAVIOR_SAVE:
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StabilizationSettingsSet(&stabSettings);
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UAVObjSave(StabilizationSettingsHandle(), 0);
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break;
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}
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}
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/**
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* @}
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* @}
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*/
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