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e260077247
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1545 ebee16cc-31ac-478f-84a7-5cbb03baadba
323 lines
11 KiB
C
323 lines
11 KiB
C
/**
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******************************************************************************
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* @addtogroup OpenPilotModules OpenPilot Modules
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* @{
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* @addtogroup ManualControlModule Manual Control Module
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* @brief Provide manual control or allow it alter flight mode.
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* @{
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*
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* Reads in the ManualControlCommand FlightMode setting from receiver then either
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* pass the settings straght to ActuatorDesired object (manual mode) or to
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* AttitudeDesired object (stabilized mode)
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*
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* @file manualcontrol.c
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
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* @brief ManualControl module. Handles safety R/C link and flight mode.
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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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#include "openpilot.h"
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#include "manualcontrol.h"
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#include "manualcontrolsettings.h"
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#include "stabilizationsettings.h"
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#include "manualcontrolcommand.h"
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#include "actuatordesired.h"
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#include "attitudedesired.h"
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#include "attitudesettings.h"
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// Private constants
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#define STACK_SIZE configMINIMAL_STACK_SIZE
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#define TASK_PRIORITY (tskIDLE_PRIORITY+4)
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#define UPDATE_PERIOD_MS 20
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#define THROTTLE_FAILSAFE -0.1
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#define FLIGHT_MODE_LIMIT 1.0/3.0
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// Private types
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// Private variables
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static xTaskHandle taskHandle;
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// Private functions
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static void manualControlTask(void* parameters);
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static float scaleChannel(int16_t value, int16_t max, int16_t min, int16_t neutral);
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/**
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* Module initialization
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*/
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int32_t ManualControlInitialize()
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{
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// Start main task
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xTaskCreate(manualControlTask, (signed char*)"ManualControl", STACK_SIZE, NULL, TASK_PRIORITY, &taskHandle);
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return 0;
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}
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/**
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* Module task
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*/
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static void manualControlTask(void* parameters)
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{
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ManualControlSettingsData settings;
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StabilizationSettingsData stabSettings;
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ManualControlCommandData cmd;
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ActuatorDesiredData actuator;
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AttitudeDesiredData attitude;
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portTickType lastSysTime;
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float flightMode;
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uint8_t disconnected_count = 0;
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uint8_t connected_count = 0;
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enum {CONNECTED, DISCONNECTED} connection_state = DISCONNECTED;
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// Main task loop
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lastSysTime = xTaskGetTickCount();
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while (1)
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{
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// Wait until next update
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vTaskDelayUntil(&lastSysTime, UPDATE_PERIOD_MS / portTICK_RATE_MS );
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// Read settings
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ManualControlSettingsGet(&settings);
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StabilizationSettingsGet(&stabSettings);
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if(!ManualControlCommandReadOnly(&cmd))
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{
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// Check settings, if error raise alarm
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if ( settings.Roll >= MANUALCONTROLSETTINGS_ROLL_NONE ||
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settings.Pitch >= MANUALCONTROLSETTINGS_PITCH_NONE ||
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settings.Yaw >= MANUALCONTROLSETTINGS_YAW_NONE ||
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settings.Throttle >= MANUALCONTROLSETTINGS_THROTTLE_NONE ||
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settings.FlightMode >= MANUALCONTROLSETTINGS_FLIGHTMODE_NONE )
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{
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AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_CRITICAL);
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cmd.FlightMode = MANUALCONTROLCOMMAND_FLIGHTMODE_AUTO;
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cmd.Connected = MANUALCONTROLCOMMAND_CONNECTED_FALSE;
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ManualControlCommandSet(&cmd);
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continue;
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}
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// Read channel values in us
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// TODO: settings.InputMode is currently ignored because PIOS will not allow runtime
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// selection of PWM and PPM. The configuration is currently done at compile time in
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// the pios_config.h file.
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for (int n = 0; n < MANUALCONTROLCOMMAND_CHANNEL_NUMELEM; ++n)
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{
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#if defined(PIOS_INCLUDE_PWM)
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cmd.Channel[n] = PIOS_PWM_Get(n);
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#elif defined(PIOS_INCLUDE_PPM)
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cmd.Channel[n] = PIOS_PPM_Get(n);
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#elif defined(PIOS_INCLUDE_SPEKTRUM)
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cmd.Channel[n] = PIOS_SPEKTRUM_Get(n);
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#endif
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}
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// Calculate roll command in range +1 to -1
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cmd.Roll = scaleChannel( cmd.Channel[settings.Roll], settings.ChannelMax[settings.Roll],
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settings.ChannelMin[settings.Roll], settings.ChannelNeutral[settings.Roll] );
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// Calculate pitch command in range +1 to -1
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cmd.Pitch = scaleChannel( cmd.Channel[settings.Pitch], settings.ChannelMax[settings.Pitch],
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settings.ChannelMin[settings.Pitch], settings.ChannelNeutral[settings.Pitch] );
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// Calculate yaw command in range +1 to -1
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cmd.Yaw = scaleChannel( cmd.Channel[settings.Yaw], settings.ChannelMax[settings.Yaw],
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settings.ChannelMin[settings.Yaw], settings.ChannelNeutral[settings.Yaw] );
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// Calculate throttle command in range +1 to -1
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cmd.Throttle = scaleChannel( cmd.Channel[settings.Throttle], settings.ChannelMax[settings.Throttle],
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settings.ChannelMin[settings.Throttle], settings.ChannelNeutral[settings.Throttle] );
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if(settings.Accessory1 != MANUALCONTROLSETTINGS_ACCESSORY1_NONE)
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cmd.Accessory1 = scaleChannel( cmd.Channel[settings.Accessory1], settings.ChannelMax[settings.Accessory1],
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settings.ChannelMin[settings.Accessory1], settings.ChannelNeutral[settings.Accessory1] );
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else
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cmd.Accessory1 = 0;
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if(settings.Accessory2 != MANUALCONTROLSETTINGS_ACCESSORY2_NONE)
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cmd.Accessory2 = scaleChannel( cmd.Channel[settings.Accessory2], settings.ChannelMax[settings.Accessory2],
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settings.ChannelMin[settings.Accessory2], settings.ChannelNeutral[settings.Accessory2] );
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else
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cmd.Accessory2 = 0;
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if(settings.Accessory3 != MANUALCONTROLSETTINGS_ACCESSORY3_NONE)
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cmd.Accessory3 = scaleChannel( cmd.Channel[settings.Accessory3], settings.ChannelMax[settings.Accessory3],
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settings.ChannelMin[settings.Accessory3], settings.ChannelNeutral[settings.Accessory3] );
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else
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cmd.Accessory3 = 0;
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// Update flight mode
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flightMode = scaleChannel( cmd.Channel[settings.FlightMode], settings.ChannelMax[settings.FlightMode],
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settings.ChannelMin[settings.FlightMode], settings.ChannelNeutral[settings.FlightMode] );
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if (flightMode < -FLIGHT_MODE_LIMIT)
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{
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cmd.FlightMode = MANUALCONTROLCOMMAND_FLIGHTMODE_MANUAL;
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}
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else if (flightMode > FLIGHT_MODE_LIMIT)
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{
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cmd.FlightMode = MANUALCONTROLCOMMAND_FLIGHTMODE_AUTO;
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}
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else
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{
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cmd.FlightMode = MANUALCONTROLCOMMAND_FLIGHTMODE_STABILIZED;
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}
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// Update the ManualControlCommand object
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ManualControlCommandSet(&cmd);
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// This seems silly to set then get, but the reason is if the GCS is
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// the control input, the set command will be blocked by the read only
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// setting and the get command will pull the right values from telemetry
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}
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else
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ManualControlCommandGet(&cmd); /* Under GCS control */
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// Implement hysteresis loop on connection status
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// Must check both Max and Min in case they reversed
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if (!ManualControlCommandReadOnly(&cmd) &&
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cmd.Channel[settings.Throttle] < settings.ChannelMax[settings.Throttle] &&
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cmd.Channel[settings.Throttle] < settings.ChannelMin[settings.Throttle])
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{
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if (disconnected_count++ > 10)
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{
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connection_state = DISCONNECTED;
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connected_count = 0;
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disconnected_count = 0;
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} else
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disconnected_count++;
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} else {
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if (connected_count++ > 10)
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{
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connection_state = CONNECTED;
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connected_count = 0;
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disconnected_count = 0;
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}
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else
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connected_count++;
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}
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if (connection_state == DISCONNECTED) {
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cmd.Connected = MANUALCONTROLCOMMAND_CONNECTED_FALSE;
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cmd.Throttle = 0; // Shut down engine with no control
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cmd.Roll = 0;
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cmd.Yaw = 0;
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cmd.Pitch = 0;
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//cmd.FlightMode = MANUALCONTROLCOMMAND_FLIGHTMODE_AUTO; // don't do until AUTO implemented and functioning
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AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_WARNING);
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ManualControlCommandSet(&cmd);
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}
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else
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{
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cmd.Connected = MANUALCONTROLCOMMAND_CONNECTED_TRUE;
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AlarmsClear(SYSTEMALARMS_ALARM_MANUALCONTROL);
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ManualControlCommandSet(&cmd);
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}
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// Depending on the mode update the Stabilization or Actuator objects
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if ( cmd.FlightMode == MANUALCONTROLCOMMAND_FLIGHTMODE_MANUAL )
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{
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actuator.Roll = cmd.Roll;
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actuator.Pitch = cmd.Pitch;
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actuator.Yaw = cmd.Yaw;
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actuator.Throttle = cmd.Throttle;
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ActuatorDesiredSet(&actuator);
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}
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else if ( cmd.FlightMode == MANUALCONTROLCOMMAND_FLIGHTMODE_STABILIZED )
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{
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attitude.Roll = cmd.Roll*stabSettings.RollMax;
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attitude.Pitch = cmd.Pitch*stabSettings.PitchMax;
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if (cmd.Yaw<0)
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{
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attitude.Yaw = 360 + (cmd.Yaw*180.0);
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}
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else
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{
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attitude.Yaw = (cmd.Yaw*180.0);
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}
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attitude.Throttle = cmd.Throttle*stabSettings.ThrottleMax;
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AttitudeDesiredSet(&attitude);
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}
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if( cmd.Accessory3 < -.5 ) { //TODO: Make what happens here depend on GCS
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AttitudeSettingsData attitudeSettings;
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AttitudeSettingsGet(&attitudeSettings);
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// Hard coding a maximum bias of 15 for now... maybe mistake
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attitudeSettings.PitchBias = cmd.Accessory1 * 15;
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attitudeSettings.RollBias = cmd.Accessory2 * 15;
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AttitudeSettingsSet(&attitudeSettings);
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} else if (cmd.Accessory3 > .9) {
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// REALLY don't want to end up here accidentally. I've also saved by meta for Stabilization setting to be
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// flight read only by default
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StabilizationSettingsData stabSettings;
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StabilizationSettingsGet(&stabSettings);
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if(cmd.Accessory1 > 0)
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stabSettings.PitchKp = cmd.Accessory1 * 0.05;
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if(cmd.Accessory2 > 0)
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stabSettings.RollKp = cmd.Accessory2 * 0.05;
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StabilizationSettingsSet(&stabSettings);
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}
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}
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}
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/**
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* Convert channel from servo pulse duration (microseconds) to scaled -1/+1 range.
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*/
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static float scaleChannel(int16_t value, int16_t max, int16_t min, int16_t neutral)
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{
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float valueScaled;
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// Scale
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if ( (max > min && value >= neutral) || (min > max && value <= neutral) )
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{
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if ( max != neutral )
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{
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valueScaled = (float)(value-neutral)/(float)(max-neutral);
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}
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else
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{
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valueScaled = 0;
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}
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}
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else
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{
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if ( min != neutral )
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{
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valueScaled = (float)(value-neutral)/(float)(neutral-min);
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}
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else
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{
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valueScaled = 0;
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}
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}
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// Bound
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if ( valueScaled > 1.0 )
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{
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valueScaled = 1.0;
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}
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else if ( valueScaled < -1.0 )
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{
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valueScaled = -1.0;
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}
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return valueScaled;
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}
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/**
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* @}
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* @}
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*/
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