Subversion Repositories FlightCtrl

// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

// + Copyright (c) 04.2007 Holger Buss

// + Nur für den privaten Gebrauch

// + www.MikroKopter.com

// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

// + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation),

// + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist.

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// + bzgl. der Nutzungsbedingungen aufzunehmen.

// + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen,

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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

// + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht,

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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

// + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts

// + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de"

// + eindeutig als Ursprung verlinkt werden

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// + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion

// + Benutzung auf eigene Gefahr

// + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden

// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

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// + mit unserer Zustimmung zulässig

// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

// + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen

// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

// + Redistributions of source code (with or without modifications) must retain the above copyright notice,

// + this list of conditions and the following disclaimer.

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// +     from this software without specific prior written permission.

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// +  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#include <stdlib.h>

#include "controlMixer.h"

#include "rc.h"

#include "heightControl.h"

#include "attitudeControl.h"

#include "externalControl.h"

#include "configuration.h"

#include "attitude.h"

#include "commands.h"

#include "output.h"

uint16_t maxControl[2] = { 0, 0 };

int16_t control[2] = { 0, 0 };

int16_t controlYaw = 0, controlThrottle = 0;

uint8_t looping = 0;

// Internal variables for reading commands made with an R/C stick.

uint8_t lastCommand = COMMAND_NONE;

uint8_t lastArgument;

uint8_t isCommandRepeated = 0;

// MK flags. TODO: Replace by enum. State machine.

uint16_t isFlying = 0;

volatile uint8_t MKFlags = 0;

/*

 * This could be expanded to take arguments from ohter sources than the RC

 * (read: Custom MK RC project)

 */

uint8_t controlMixer_getArgument(void) {

        return lastArgument;

}

/*

 * This could be expanded to take calibrate / start / stop commands from ohter sources

 * than the R/C (read: Custom MK R/C project)

 */

uint8_t controlMixer_getCommand(void) {

        return lastCommand;

}

uint8_t controlMixer_isCommandRepeated(void) {

        return isCommandRepeated;

}

void controlMixer_setNeutral() {

        EC_setNeutral();

        HC_setGround();

}

/*

 * Set the potientiometer values to the momentary values of the respective R/C channels.

 * No slew rate limitation.

 */

void controlMixer_initVariables(void) {

        uint8_t i;

        for (i = 0; i < 8; i++) {

                variables[i] = RC_getVariable(i);

        }

}

/*

 * Update potentiometer values with limited slew rate. Could be made faster if desired.

 * TODO: It assumes R/C as source. Not necessarily true.

 */

void controlMixer_updateVariables(void) {

        uint8_t i;

        int16_t targetvalue;

        for (i = 0; i < 8; i++) {

                targetvalue = RC_getVariable(i);

                if (targetvalue < 0)

                        targetvalue = 0;

                if (variables[i] < targetvalue && variables[i] < 255)

                        variables[i]++;

                else if (variables[i] > 0 && variables[i] > targetvalue)

                        variables[i]--;

        }

}

uint8_t controlMixer_getSignalQuality(void) {

        uint8_t rcQ = RC_getSignalQuality();

        uint8_t ecQ = EC_getSignalQuality();

        // This needs not be the only correct solution...

        return rcQ > ecQ ? rcQ : ecQ;

}

/*

 * Update the variables indicating stick position from the sum of R/C, GPS and external control.

 */

void controlMixer_update(void) {

        // calculate Stick inputs by rc channels (P) and changing of rc channels (D)

        // TODO: If no signal --> zero.

        uint8_t axis;

        // takes almost no time...

        RC_update();

        // takes almost no time...

        EC_update();

        // takes about 80 usec.

        HC_update();

        int16_t* RC_PRTY = RC_getPRTY();

        int16_t* EC_PRTY = EC_getPRTY();

        control[PITCH] = RC_PRTY[CONTROL_PITCH] + EC_PRTY[CONTROL_PITCH];

        control[ROLL] = RC_PRTY[CONTROL_ROLL] + EC_PRTY[CONTROL_ROLL];

        // This can be a CPU time killer if the function implementations are inefficient.

        controlThrottle = AC_getThrottle(HC_getThrottle(RC_PRTY[CONTROL_THROTTLE]

                        + EC_PRTY[CONTROL_THROTTLE]));

        controlYaw = RC_PRTY[CONTROL_YAW] + EC_PRTY[CONTROL_YAW];

        DebugOut.Analog[12] = control[PITCH];

        DebugOut.Analog[13] = control[ROLL];

        if (controlMixer_getSignalQuality() >= SIGNAL_GOOD) {

                controlMixer_updateVariables();

                configuration_applyVariablesToParams();

                looping = RC_getLooping(looping);

        } else { // Signal is not OK

                // Could handle switch to emergency flight here.

                // throttle is handled elsewhere.

                looping = 0;

        }

        // part1a end.

        /* This is not really necessary with the dead-band feature on all sticks (see rc.c)

         if(staticParams.GlobalConfig & (CFG_COMPASS_ACTIVE | CFG_GPS_ACTIVE)) {

         if (controlYaw > 2) controlYaw-= 2;

         else if (controlYaw< -2) controlYaw += 2;

         else controlYaw = 0;

         }

         */

        /*

         * Record maxima

         */

        for (axis = PITCH; axis <= ROLL; axis++) {

                if (abs(control[axis] / CONTROL_SCALING) > maxControl[axis]) {

                        maxControl[axis] = abs(control[axis]) / CONTROL_SCALING;

                        if (maxControl[axis] > 100)

                                maxControl[axis] = 100;

                } else if (maxControl[axis])

                        maxControl[axis]--;

        }

        uint8_t rcCommand = (RC_getSignalQuality() >= SIGNAL_OK) ? RC_getCommand()

                        : COMMAND_NONE;

        uint8_t ecCommand = (EC_getSignalQuality() >= SIGNAL_OK) ? EC_getCommand()

                        : COMMAND_NONE;

        if (rcCommand != COMMAND_NONE) {

                isCommandRepeated = (lastCommand == rcCommand);

                lastCommand = rcCommand;

                lastArgument = RC_getArgument();

        } else if (ecCommand != COMMAND_NONE) {

                isCommandRepeated = (lastCommand == ecCommand);

                lastCommand = ecCommand;

                lastArgument = EC_getArgument();

        } else {

                // Both sources have no command, or one or both are out.

                // Just set to false. There is no reason to check if the none-command was repeated anyway.

                isCommandRepeated = 0;

                lastCommand = COMMAND_NONE;

        }

        if (isCommandRepeated)

                DebugOut.Digital[0] |= DEBUG_COMMANDREPEATED;

        else

                DebugOut.Digital[0] &= ~DEBUG_COMMANDREPEATED;

        if (rcCommand)

                DebugOut.Digital[1] |= DEBUG_COMMANDREPEATED;

        else

                DebugOut.Digital[1] &= ~DEBUG_COMMANDREPEATED;

        // part1 end.

}

// TODO: Integrate into command system.

uint8_t controlMixer_testCompassCalState(void) {

        return RC_testCompassCalState();

}