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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// + Copyright (c) 04.2007 Holger Buss
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// + Nur für den privaten Gebrauch
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// + www.MikroKopter.com
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation),
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// + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist.
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// + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt
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// + bzgl. der Nutzungsbedingungen aufzunehmen.
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// + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen,
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// + Verkauf von Luftbildaufnahmen, usw.
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht,
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// + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts
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// + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de"
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// + eindeutig als Ursprung verlinkt werden
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion
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// + Benutzung auf eigene Gefahr
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// + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// + Die Portierung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur
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// + mit unserer Zustimmung zulässig
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// + Redistributions of source code (with or without modifications) must retain the above copyright notice,
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// + this list of conditions and the following disclaimer.
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// +   * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived
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// +     from this software without specific prior written permission.
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// +   * The use of this project (hardware, software, binary files, sources and documentation) is only permittet
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// +     for non-commercial use (directly or indirectly)
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// +     Commercial use (for example: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted
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// +     with our written permission
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// +   * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be
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// +     clearly linked as origin
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// +   * porting to systems other than hardware from www.mikrokopter.de is not allowed
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// +  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// +  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// +  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// +  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// +  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// +  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// +  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// +  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN// +  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// +  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// +  POSSIBILITY OF SUCH DAMAGE.
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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#include <stdlib.h>
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#include "controlMixer.h"
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#include "rc.h"
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#include "heightControl.h"
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#include "attitudeControl.h"
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#include "externalControl.h"
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#include "configuration.h"
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#include "attitude.h"
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#include "commands.h"
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#include "output.h"
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uint16_t maxControl[2] = { 0, 0 };
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int16_t control[2] = { 0, 0 };
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int16_t controlYaw = 0, controlThrottle = 0;
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uint8_t looping = 0;
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// Internal variables for reading commands made with an R/C stick.
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uint8_t lastCommand = COMMAND_NONE;
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uint8_t lastArgument;
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uint8_t isCommandRepeated = 0;
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// MK flags. TODO: Replace by enum. State machine.
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uint16_t isFlying = 0;
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volatile uint8_t MKFlags = 0;
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/*
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 * This could be expanded to take arguments from ohter sources than the RC
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 * (read: Custom MK RC project)
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 */
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uint8_t controlMixer_getArgument(void) {
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        return lastArgument;
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}
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/*
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 * This could be expanded to take calibrate / start / stop commands from ohter sources
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 * than the R/C (read: Custom MK R/C project)
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 */
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uint8_t controlMixer_getCommand(void) {
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        return lastCommand;
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}
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uint8_t controlMixer_isCommandRepeated(void) {
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        return isCommandRepeated;
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}
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void controlMixer_setNeutral() {
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        EC_setNeutral();
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        HC_setGround();
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}
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/*
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 * Set the potientiometer values to the momentary values of the respective R/C channels.
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 * No slew rate limitation.
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 */
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void controlMixer_initVariables(void) {
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        uint8_t i;
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        for (i = 0; i < 8; i++) {
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                variables[i] = RC_getVariable(i);
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        }
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}
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/*
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 * Update potentiometer values with limited slew rate. Could be made faster if desired.
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 * TODO: It assumes R/C as source. Not necessarily true.
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 */
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void controlMixer_updateVariables(void) {
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        uint8_t i;
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        int16_t targetvalue;
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        for (i = 0; i < 8; i++) {
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                targetvalue = RC_getVariable(i);
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                if (targetvalue < 0)
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                        targetvalue = 0;
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                if (variables[i] < targetvalue && variables[i] < 255)
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                        variables[i]++;
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                else if (variables[i] > 0 && variables[i] > targetvalue)
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                        variables[i]--;
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        }
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}
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uint8_t controlMixer_getSignalQuality(void) {
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        uint8_t rcQ = RC_getSignalQuality();
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        uint8_t ecQ = EC_getSignalQuality();
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        // This needs not be the only correct solution...
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        return rcQ > ecQ ? rcQ : ecQ;
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}
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/*
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 * Update the variables indicating stick position from the sum of R/C, GPS and external control.
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 */
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void controlMixer_update(void) {
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        // calculate Stick inputs by rc channels (P) and changing of rc channels (D)
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        // TODO: If no signal --> zero.
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        uint8_t axis;
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        // takes almost no time...
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        RC_update();
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        // takes almost no time...
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        EC_update();
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        // takes about 80 usec.
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        HC_update();
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        int16_t* RC_PRTY = RC_getPRTY();
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        int16_t* EC_PRTY = EC_getPRTY();
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        control[PITCH] = RC_PRTY[CONTROL_PITCH] + EC_PRTY[CONTROL_PITCH];
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        control[ROLL] = RC_PRTY[CONTROL_ROLL] + EC_PRTY[CONTROL_ROLL];
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        // This can be a CPU time killer if the function implementations are inefficient.
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        controlThrottle = AC_getThrottle(HC_getThrottle(RC_PRTY[CONTROL_THROTTLE]
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                        + EC_PRTY[CONTROL_THROTTLE]));
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        controlYaw = RC_PRTY[CONTROL_YAW] + EC_PRTY[CONTROL_YAW];
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        DebugOut.Analog[12] = control[PITCH];
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        DebugOut.Analog[13] = control[ROLL];
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        if (controlMixer_getSignalQuality() >= SIGNAL_GOOD) {
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                controlMixer_updateVariables();
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                configuration_applyVariablesToParams();
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                looping = RC_getLooping(looping);
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        } else { // Signal is not OK
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                // Could handle switch to emergency flight here.
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                // throttle is handled elsewhere.
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                looping = 0;
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        }
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        // part1a end.
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        /* This is not really necessary with the dead-band feature on all sticks (see rc.c)
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         if(staticParams.GlobalConfig & (CFG_COMPASS_ACTIVE | CFG_GPS_ACTIVE)) {
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         if (controlYaw > 2) controlYaw-= 2;
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         else if (controlYaw< -2) controlYaw += 2;
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         else controlYaw = 0;
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         }
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         */
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        /*
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         * Record maxima
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         */
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        for (axis = PITCH; axis <= ROLL; axis++) {
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                if (abs(control[axis] / CONTROL_SCALING) > maxControl[axis]) {
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                        maxControl[axis] = abs(control[axis]) / CONTROL_SCALING;
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                        if (maxControl[axis] > 100)
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                                maxControl[axis] = 100;
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                } else if (maxControl[axis])
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                        maxControl[axis]--;
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        }
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        uint8_t rcCommand = (RC_getSignalQuality() >= SIGNAL_OK) ? RC_getCommand()
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                        : COMMAND_NONE;
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        uint8_t ecCommand = (EC_getSignalQuality() >= SIGNAL_OK) ? EC_getCommand()
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                        : COMMAND_NONE;
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        if (rcCommand != COMMAND_NONE) {
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                isCommandRepeated = (lastCommand == rcCommand);
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                lastCommand = rcCommand;
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                lastArgument = RC_getArgument();
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        } else if (ecCommand != COMMAND_NONE) {
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                isCommandRepeated = (lastCommand == ecCommand);
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                lastCommand = ecCommand;
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                lastArgument = EC_getArgument();
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        } else {
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                // Both sources have no command, or one or both are out.
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                // Just set to false. There is no reason to check if the none-command was repeated anyway.
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                isCommandRepeated = 0;
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                lastCommand = COMMAND_NONE;
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        }
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        if (isCommandRepeated)
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                DebugOut.Digital[0] |= DEBUG_COMMANDREPEATED;
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        else
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                DebugOut.Digital[0] &= ~DEBUG_COMMANDREPEATED;
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        if (rcCommand)
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                DebugOut.Digital[1] |= DEBUG_COMMANDREPEATED;
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        else
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                DebugOut.Digital[1] &= ~DEBUG_COMMANDREPEATED;
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        // part1 end.
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}
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// TODO: Integrate into command system.
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uint8_t controlMixer_testCompassCalState(void) {
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        return RC_testCompassCalState();
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}