real_time/software/raspberry/superviseur-robot/tasks.cpp

/*
 * Copyright (C) 2018 dimercur
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "tasks.h"
#include <stdexcept>

// Déclaration des priorités des taches
#define PRIORITY_TSERVER 10
#define PRIORITY_TOPENCOMROBOT 50
#define PRIORITY_TMOVE 20
#define PRIORITY_TSENDTOMON 22
#define PRIORITY_TRECEIVEFROMMON 50
#define PRIORITY_TSTARTROBOTWITHOUTWATCHDOG 22
#define PRIORITY_TSTARTROBOTWITHWATCHDOG 22
#define PRIORITY_TCAMERA 21
#define PRIORITY_DETECTLOSTSUPROB 21


/*
 * Some remarks:
 * 1- This program is mostly a template. It shows you how to create tasks, semaphore
 *   message queues, mutex ... and how to use them
 * 
 * 2- semDumber is, as name say, useless. Its goal is only to show you how to use semaphore
 * 
 * 3- Data flow is probably not optimal
 * 
 * 4- Take into account that ComRobot::Write will block your task when serial buffer is full,
 *   time for internal buffer to flush
 * 
 * 5- Same behavior existe for ComMonitor::Write !
 * 
 * 6- When you want to write something in terminal, use cout and terminate with endl and flush
 * 
 * 7- Good luck !
 */

/**
 * @brief Initialisation des structures de l'application (tâches, mutex, 
 * semaphore, etc.)
 */
void Tasks::Init() {
    int status;
    int err;

    /**************************************************************************************/
    /* 	Mutex creation                                                                    */
    /**************************************************************************************/
    if (err = rt_mutex_create(&mutex_monitor, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_mutex_create(&mutex_robot, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_mutex_create(&mutex_robotStarted, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_mutex_create(&mutex_move, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_mutex_create(&mutex_killReceiveFromMon, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    
    if (err = rt_mutex_create(&mutex_killVision, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    
    if (err = rt_mutex_create(&mutex_searchArena, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }

    if (err = rt_mutex_create(&mutex_drawArena, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    
    if (err = rt_mutex_create(&mutex_getPosition, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }

    if (err = rt_mutex_create(&mutex_killSendMon, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }    

    if (err = rt_mutex_create(&mutex_killDetectLostSupRob, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    } 
    
    if (err = rt_mutex_create(&mutex_acquireImage, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }

    if (err = rt_mutex_create(&mutex_killOpenComRobot, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }      

    
    
    
    /*if (err = rt_mutex_create(&mutex_robot_on, NULL)) {
        cerr << "Error mutex create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }*/
    
    
    cout << "Mutexes created successfully" << endl << flush;

    /**************************************************************************************/
    /* 	Semaphors creation       							  */
    /**************************************************************************************/
    if (err = rt_sem_create(&sem_barrier, NULL, 0, S_FIFO)) {
        cerr << "Error semaphore create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_sem_create(&sem_openComRobot, NULL, 0, S_FIFO)) {
        cerr << "Error semaphore create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_sem_create(&sem_serverOk, NULL, 0, S_FIFO)) {
        cerr << "Error semaphore create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_sem_create(&sem_startRobotWithoutWatchdog, NULL, 0, S_FIFO)) {
        cerr << "Error semaphore create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_sem_create(&sem_startRobotWithWatchdog, NULL, 0, S_FIFO)) {
        cerr << "Error semaphore create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
        
     if (err = rt_sem_create(&sem_detectLostSupRob, NULL, 0, S_FIFO)) {
        cerr << "Error semaphore create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    
     if (err = rt_sem_create(&sem_restart, NULL, 0, S_FIFO)) {
        cerr << "Error semaphore create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    } 
    
    cout << "Semaphores created successfully" << endl << flush;

    /**************************************************************************************/
    /* Tasks creation                                                                     */
    /**************************************************************************************/
    if (err = rt_task_create(&th_server, "th_server", 0, PRIORITY_TSERVER, 0)) {
        cerr << "Error task create server: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_task_create(&th_sendToMon, "th_sendToMon", 0, PRIORITY_TSENDTOMON, 0)) {
        cerr << "Error task create sendtoMon: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_task_create(&th_receiveFromMon, "th_receiveFromMon", 0, PRIORITY_TRECEIVEFROMMON, 0)) {
        cerr << "Error task create receiveFromMon: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_task_create(&th_openComRobot, "th_openComRobot", 0, PRIORITY_TOPENCOMROBOT, 0)) {
        cerr << "Error task create openComRobot: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_task_create(&th_startRobotWithoutWatchdog, "th_startRobotWithoutWatchdog", 0, PRIORITY_TSTARTROBOTWITHOUTWATCHDOG, 0)) {
        cerr << "Error task create startRobotWithoutWatchdog: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_task_create(&th_startRobotWithWatchdog, "th_startRobotWithWatchdog", 0, PRIORITY_TSTARTROBOTWITHWATCHDOG, 0)) {
        cerr << "Error task create startRobotWithWatchdog: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    if (err = rt_task_create(&th_move, "th_move", 0, PRIORITY_TMOVE, 0)) {
        cerr << "Error task create move: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    
    if (err = rt_task_create(&th_detectLostSupRob, "th_detectLostSupRob", 0, PRIORITY_DETECTLOSTSUPROB, 0)) {
        cerr << "Error task create detectLostSupRob: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    
    cout << "Tasks created successfully" << endl << flush;

    /**************************************************************************************/
    /* Message queues creation                                                            */
    /**************************************************************************************/
    if ((err = rt_queue_create(&q_messageToMon, "q_messageToMon", sizeof (Message*)*50, Q_UNLIMITED, Q_FIFO)) < 0) {
        cerr << "Error msg queue create: " << strerror(-err) << endl << flush;
        exit(EXIT_FAILURE);
    }
    cout << "Queues created successfully" << endl << flush;

}

/**
 * @brief Démarrage des tâches
 */
void Tasks::Run() {
    
        cout << "Coucou" << endl << flush;

        rt_task_set_priority(NULL, T_LOPRIO);
        int err;

        if (err = rt_task_start(&th_server, (void(*)(void*)) & Tasks::ServerTask, this)) {
            cerr << "Error task start server: " << strerror(-err) << endl << flush;
            exit(EXIT_FAILURE);
        }
        if (err = rt_task_start(&th_sendToMon, (void(*)(void*)) & Tasks::SendToMonTask, this)) {
            cerr << "Error task start sendToMon: " << strerror(-err) << endl << flush;
            exit(EXIT_FAILURE);
        }
        if (err = rt_task_start(&th_receiveFromMon, (void(*)(void*)) & Tasks::ReceiveFromMonTask, this)) {
            cerr << "Error task start receiveFromMon: " << strerror(-err) << endl << flush;
            exit(EXIT_FAILURE);
        }
        if (err = rt_task_start(&th_openComRobot, (void(*)(void*)) & Tasks::OpenComRobot, this)) {
            cerr << "Error task start openComRobot: " << strerror(-err) << endl << flush;
            exit(EXIT_FAILURE);
        }
        if (err = rt_task_start(&th_startRobotWithoutWatchdog, (void(*)(void*)) & Tasks::StartRobotTaskWithoutWatchdog, this)) {
            cerr << "Error task start startRobotWithoutWatchdog: " << strerror(-err) << endl << flush;
            exit(EXIT_FAILURE);
        }
        if (err = rt_task_start(&th_startRobotWithWatchdog, (void(*)(void*)) & Tasks::StartRobotTaskWithWatchdog, this)) {
            cerr << "Error task start startRobotWithWatchdog: " << strerror(-err) << endl << flush;
            exit(EXIT_FAILURE);
        }
        if (err = rt_task_start(&th_move, (void(*)(void*)) & Tasks::MoveTask, this)) {
            cerr << "Error task start move: " << strerror(-err) << endl << flush;
            exit(EXIT_FAILURE);
        }

        if (err = rt_task_start(&th_detectLostSupRob, (void(*)(void*)) & Tasks::DetectLostSupRob, this)) {
            cerr << "Error task start detectLostSupRob: " << strerror(-err) << endl << flush;
            exit(EXIT_FAILURE);
        }    

        cout << "Tasks launched" << endl << flush;

}

/**
 * @brief Arrêt des tâches
 */
void Tasks::Stop() {
    monitor.Close();
    robot.Close();
}

/**
 */
void Tasks::Join() {
    cout << "Tasks synchronized" << endl << flush;
    rt_sem_broadcast(&sem_barrier);
        
    //Initialization for some specific sem: Allow to run the first time
    //rt_sem_broadcast(&sem_restart);
    
    pause();
}

/**
 * @brief Thread handling server communication with the monitor.
 */
void Tasks::ServerTask(void *arg) {
    int status;
    
    cout << "Start " << __PRETTY_FUNCTION__ << endl << flush;
    
    while(1){
        // Synchronization barrier (waiting that all tasks are started)
        rt_sem_p(&sem_barrier, TM_INFINITE);

        /**************************************************************************************/
        /* The task server starts here                                                        */
        /**************************************************************************************/
        rt_mutex_acquire(&mutex_monitor, TM_INFINITE);
        status = monitor.Open(SERVER_PORT);
        rt_mutex_release(&mutex_monitor);

        cout << "Open server on port " << (SERVER_PORT) << " (" << status << ")" << endl;

        if (status < 0) throw std::runtime_error {
            "Unable to start server on port " + std::to_string(SERVER_PORT)
        };
        monitor.AcceptClient(); // Wait the monitor client
        cout << "Rock'n'Roll baby, client accepted!" << endl << flush;
        rt_sem_broadcast(&sem_serverOk);
    }
}

/**
 * @brief Thread sending data to monitor.
 */
void Tasks::SendToMonTask(void* arg) {
    Message *msg;
    bool kill_sendToMonOk=0;
    
    cout << "Start " << __PRETTY_FUNCTION__ << endl << flush;
    
    while(1){
        // Synchronization barrier (waiting that all tasks are starting)
        rt_sem_p(&sem_barrier, TM_INFINITE);
    

        /**************************************************************************************/
        /* The task sendToMon starts here                                                     */
        /**************************************************************************************/
        rt_sem_p(&sem_serverOk, TM_INFINITE);
        
        //Initialize the loop condition
        kill_sendToMonOk=0;
        rt_mutex_acquire(&mutex_killSendMon, TM_INFINITE);
            killSendMon=0; // The message is deleted with the Write
        rt_mutex_release(&mutex_killSendMon);

        while (!kill_sendToMonOk) {
            cout << "wait msg to send" << endl << flush;
            msg = ReadInQueue(&q_messageToMon);
            cout << "Send msg to mon: " << msg->ToString() << endl << flush;
            rt_mutex_acquire(&mutex_monitor, TM_INFINITE);
            monitor.Write(msg); // The message is deleted with the Write
            rt_mutex_release(&mutex_monitor);

            rt_mutex_acquire(&mutex_killSendMon, TM_INFINITE);
            kill_sendToMonOk=killSendMon; // The message is deleted with the Write
            rt_mutex_release(&mutex_killSendMon);        

        }
        
        cout << "SendToMon Task dies" << endl << flush;
    }
}

/**
 * @brief Thread receiving data from monitor.
 */
void Tasks::ReceiveFromMonTask(void *arg) {
    Message *msgRcv;
    bool killReceiveFromMonOk=0;
    
    cout << "Start " << __PRETTY_FUNCTION__ << endl << flush;
        
    while(1){
        // Synchronization barrier (waiting that all tasks are starting)
        rt_sem_p(&sem_barrier, TM_INFINITE);

        //rt_sem_p(&sem_restart,TM_INFINITE);

        //Reinitialize control boolean 
        rt_mutex_acquire(&mutex_killReceiveFromMon, TM_INFINITE);
            killReceiveFromMon=0;
        rt_mutex_release(&mutex_killReceiveFromMon);

        /**************************************************************************************/
        /* The task receiveFromMon starts here                                                */
        /**************************************************************************************/
        rt_sem_p(&sem_serverOk, TM_INFINITE);
        cout << "Received message from monitor activated" << endl << flush;

        while (!killReceiveFromMonOk) {
            msgRcv = monitor.Read();
            cout << "Rcv <= " << msgRcv->ToString() << endl << flush;

            if (msgRcv->CompareID(MESSAGE_MONITOR_LOST)) {
                delete(msgRcv);
                cout << "Connection to monitor lost" << endl;

                rt_mutex_acquire(&mutex_killReceiveFromMon, TM_INFINITE);
                    killReceiveFromMon=1;
                rt_mutex_release(&mutex_killReceiveFromMon);

                rt_mutex_acquire(&mutex_killVision, TM_INFINITE);
                    killVision=1;
                rt_mutex_release(&mutex_killVision);

                rt_mutex_acquire(&mutex_killSendMon, TM_INFINITE);
                    killSendMon=1;
                rt_mutex_release(&mutex_killSendMon); 
                //Write fake message in queue to unblock Read function
                WriteInQueue(&q_messageToMon, new Message(MESSAGE_EMPTY));

                rt_mutex_acquire(&mutex_killBattery, TM_INFINITE);
                    killBattery=1;
                rt_mutex_release(&mutex_killBattery);

                rt_mutex_acquire(&mutex_killDetectLostSupRob, TM_INFINITE);
                    killDetectLostSupRob=1;
                rt_mutex_release(&mutex_killDetectLostSupRob);

                rt_mutex_acquire(&mutex_acquireImage, TM_INFINITE);
                    acquireImage=0;
                rt_mutex_release(&mutex_acquireImage);

                sleep(1);

                monitor.Close();
                robot.Close();

                //Tasks::Join();
                
                cout << "End sleep" << endl << flush;
                rt_sem_broadcast(&sem_barrier);             
                cout << "Mes couilles" << endl << flush;

                //exit(-1);


            } else if (msgRcv->CompareID(MESSAGE_CAM_OPEN)) {
                cout << "Command Open Camera Received" << endl << flush;


                //start task Vision

            } else if (msgRcv->CompareID(MESSAGE_CAM_CLOSE)) {
                cout << "Command Close Camera Received" << endl << flush;

                //Trigger killVision
                rt_mutex_acquire(&mutex_killVision, TM_INFINITE);
                    killVision=1;
                rt_mutex_release(&mutex_killVision);



            } else if (msgRcv->CompareID(MESSAGE_ROBOT_COM_OPEN)) {
                cout << "Command Open Communication with Robot Received" << endl << flush;
                rt_sem_v(&sem_openComRobot);


            } else if (msgRcv->CompareID(MESSAGE_ROBOT_START_WITHOUT_WD)) {
                cout << "Command Start Robot without Watchdog Received" << endl << flush;
                rt_sem_v(&sem_startRobotWithoutWatchdog);

            } else if (msgRcv->CompareID(MESSAGE_ROBOT_START_WITH_WD)) {
                cout << "Command Start Robot with Watchdog Received" << endl << flush;
                //start task robot with watchdog 

            } else if (msgRcv->CompareID(MESSAGE_CAM_ASK_ARENA)) {
                cout << "Command Search Arena Received" << endl << flush;
                rt_mutex_acquire(&mutex_searchArena, TM_INFINITE);
                    searchArena=1;
                rt_mutex_release(&mutex_searchArena);

            } else if (msgRcv->CompareID(MESSAGE_CAM_POSITION_COMPUTE_START)) {
                cout << "Command Get Robot Position Received" << endl << flush;
                rt_mutex_acquire(&mutex_getPosition, TM_INFINITE);
                    getPosition=1;
                rt_mutex_release(&mutex_getPosition);            

            } else if (msgRcv->CompareID(MESSAGE_CAM_POSITION_COMPUTE_STOP)) {
                cout << "Command Stop Getting Robot Position Received" << endl << flush;
                rt_mutex_acquire(&mutex_getPosition, TM_INFINITE);
                    getPosition=0;
                rt_mutex_release(&mutex_getPosition); 

            } else if (msgRcv->CompareID(MESSAGE_CAM_ARENA_CONFIRM)) {
                cout << "Command Confirm Arena Received" << endl << flush;
                rt_mutex_acquire(&mutex_drawArena, TM_INFINITE);
                    drawArena=1;
                rt_mutex_release(&mutex_drawArena);

                rt_mutex_acquire(&mutex_searchArena, TM_INFINITE);
                    searchArena=0;
                rt_mutex_release(&mutex_searchArena);

                rt_mutex_acquire(&mutex_acquireImage, TM_INFINITE);
                    acquireImage=1;
                rt_mutex_release(&mutex_acquireImage);            

            } else if (msgRcv->CompareID(MESSAGE_CAM_ARENA_INFIRM)) {
                cout << "Command Infirm Arena Received" << endl << flush;
                rt_mutex_acquire(&mutex_searchArena, TM_INFINITE);
                    searchArena=0;
                rt_mutex_release(&mutex_searchArena);

                rt_mutex_acquire(&mutex_acquireImage, TM_INFINITE);
                    acquireImage=1;
                rt_mutex_release(&mutex_acquireImage);

            } else if (msgRcv->CompareID(MESSAGE_ROBOT_GO_FORWARD) ||
                    msgRcv->CompareID(MESSAGE_ROBOT_GO_BACKWARD) ||
                    msgRcv->CompareID(MESSAGE_ROBOT_GO_LEFT) ||
                    msgRcv->CompareID(MESSAGE_ROBOT_GO_RIGHT) ||
                    msgRcv->CompareID(MESSAGE_ROBOT_STOP)) {

                rt_mutex_acquire(&mutex_move, TM_INFINITE);
                move = msgRcv->GetID();
                rt_mutex_release(&mutex_move);
            }
            delete(msgRcv); // must be deleted manually, no consumer

            //Update loop condition

            cout << "J'arrive la" << endl << flush;

            rt_mutex_acquire(&mutex_killReceiveFromMon, TM_INFINITE);
                killReceiveFromMonOk = killReceiveFromMon;
            rt_mutex_release(&mutex_killReceiveFromMon);

            cout << "Kill Receive From Mon Ok = " << killReceiveFromMonOk << endl << flush;
        }

        cout << "ReceiveFromMon dies" << endl << flush;
    }
}

/**
 * @brief Thread opening communication with the robot.
 */
void Tasks::OpenComRobot(void *arg) { //PAS DE SOUCIS AU REDEMARAGE
    int status;
    int err;
    //bool killOpenComRobotOk = 0;

    cout << "Start " << __PRETTY_FUNCTION__ << endl << flush;
    // Synchronization barrier (waiting that all tasks are starting)
    rt_sem_p(&sem_barrier, TM_INFINITE);

        /**************************************************************************************/
        /* The task openComRobot starts here                                                  */
        /**************************************************************************************/
        while (1) {
            rt_sem_p(&sem_openComRobot, TM_INFINITE);    
            cout << "Open serial com (";
            rt_mutex_acquire(&mutex_robot, TM_INFINITE);
            status = robot.Open();
            rt_mutex_release(&mutex_robot);
            cout << status;
            cout << ")" << endl << flush;

            Message * msgSend;
            if (status < 0) {
                msgSend = new Message(MESSAGE_ANSWER_NACK);
            } else {           
                msgSend = new Message(MESSAGE_ANSWER_ACK);
            }
            WriteInQueue(&q_messageToMon, msgSend); // msgSend will be deleted by sendToMon
            
            //Trigger Detection of Communication Loss with Robot
            rt_sem_v(&sem_detectLostSupRob);

        }
}

/**
 * @brief Thread starting the communication with the robot.
 *//**
 * @brief Thread starting the communication with the robot.
 */

void Tasks::StartRobotTaskWithoutWatchdog(void *arg) {
    cout << "Start " << __PRETTY_FUNCTION__ << endl << flush;
    // Synchronization barrier (waiting that all tasks are starting)
    rt_sem_p(&sem_barrier, TM_INFINITE);
    int killBattery=0;
    /**************************************************************************************/
    /* The task startRobot starts here                                                    */
    /**************************************************************************************/
    Message* p_mess_answer_battery;
    Message * msgSend;
    rt_sem_p(&sem_startRobotWithoutWatchdog, TM_INFINITE);
    cout << "Start robot without watchdog (";
    
    //Boolean to get the battery
    rt_mutex_acquire(&mutex_killBattery, TM_INFINITE);
    killBattery=0;
    rt_mutex_release(&mutex_killBattery);
    rt_mutex_acquire(&mutex_robot, TM_INFINITE);
    msgSend = robot.Write(robot.StartWithoutWD());
    rt_mutex_release(&mutex_robot);
    cout << msgSend->GetID();
    cout << ")" << endl;  
    cout << "Movement answer: " << msgSend->ToString() << endl << flush;
    WriteInQueue(&q_messageToMon, msgSend);  // msgSend will be deleted by sendToMon

    if (msgSend->GetID() == MESSAGE_ANSWER_ACK) {
        rt_mutex_acquire(&mutex_robotStarted, TM_INFINITE);
        robotStarted = 1;
        rt_mutex_release(&mutex_robotStarted);
        rt_task_set_periodic(NULL, TM_NOW, 500000000);
        while (killBattery==0) {
            rt_task_wait_period(NULL);
            rt_mutex_acquire(&mutex_robot, TM_INFINITE);
            p_mess_answer_battery = robot.Write(robot.GetBattery());
            rt_mutex_release(&mutex_robot);
            rt_mutex_acquire(&mutex_monitor, TM_INFINITE);
            monitor.Write(p_mess_answer_battery);
            rt_mutex_release(&mutex_monitor);
            //cout << endl << flush;
            rt_mutex_acquire(&mutex_killBattery, TM_INFINITE);
            killBattery=killBattery;
            rt_mutex_release(&mutex_killBattery);
        }
    }
}


/**
 * @brief Thread starting the communication with the robot.
 *//**
 * @brief Thread starting the communication with the robot.
 */

void Tasks::StartRobotTaskWithWatchdog(void *arg) {
    cout << "Start " << __PRETTY_FUNCTION__ << endl << flush;
    // Synchronization barrier (waiting that all tasks are starting)
    rt_sem_p(&sem_barrier, TM_INFINITE);
   
    /**************************************************************************************/
    /* The task startRobot starts here                                                    */
    /**************************************************************************************/
    Message* p_mess_answer_battery;
    Message * msgSend;
    int cpt=1;
    int err;
    
    while(1){
    
        rt_sem_p(&sem_restart, TM_INFINITE);
        
        rt_sem_p(&sem_startRobotWithWatchdog, TM_INFINITE);
        cout << "Start robot with watchdog (";
        rt_mutex_acquire(&mutex_robot, TM_INFINITE);
        msgSend = robot.Write(robot.StartWithWD());
        rt_mutex_release(&mutex_robot);

        //boolean to ask battery
        rt_mutex_acquire(&mutex_killBattery, TM_INFINITE);
        killBattery=0;
        rt_mutex_release(&mutex_killBattery);

        cout << msgSend->GetID();
        cout << ")" << endl;

        cout << "Movement answer: " << msgSend->ToString() << endl << flush;
        WriteInQueue(&q_messageToMon, msgSend);  // msgSend will be deleted by sendToMon

        if (msgSend->GetID() == MESSAGE_ANSWER_ACK) {

            rt_mutex_acquire(&mutex_robotStarted, TM_INFINITE);
            robotStarted = 1;
            rt_mutex_release(&mutex_robotStarted);
            rt_task_set_periodic(NULL, TM_NOW, 500000000);
            while (1) {
                cpt++;
                if(cpt%2==0){
                    rt_mutex_acquire(&mutex_robot, TM_INFINITE);
                    robot.Write(robot.ReloadWD());
                    rt_mutex_release(&mutex_robot);
                }
                rt_task_wait_period(NULL);
                rt_mutex_acquire(&mutex_robot, TM_INFINITE);
                p_mess_answer_battery = robot.Write(robot.GetBattery());
                rt_mutex_release(&mutex_robot);
                rt_mutex_acquire(&mutex_monitor, TM_INFINITE);
                monitor.Write(p_mess_answer_battery);
                rt_mutex_release(&mutex_monitor);
                cout << endl << flush;
            }
        }
    }
}




/**
 * @brief Thread handling control of the robot.
 */
void Tasks::MoveTask(void *arg) {
    int rs;
    int cpMove;
    
    cout << "Start " << __PRETTY_FUNCTION__ << endl << flush;
    // Synchronization barrier (waiting that all tasks are starting)
    rt_sem_p(&sem_barrier, TM_INFINITE);
    
    /**************************************************************************************/
    /* The task starts here                                                               */
    /**************************************************************************************/
    rt_task_set_periodic(NULL, TM_NOW, 100000000);

    while (1) {
        rt_task_wait_period(NULL);
        cout << "Periodic movement update";
        rt_mutex_acquire(&mutex_robotStarted, TM_INFINITE);
        rs = robotStarted;
        rt_mutex_release(&mutex_robotStarted);
        if (rs == 1) {
            rt_mutex_acquire(&mutex_move, TM_INFINITE);
            cpMove = move;
            rt_mutex_release(&mutex_move);
            
            cout << " move: " << cpMove;
            
            rt_mutex_acquire(&mutex_robot, TM_INFINITE);
            robot.Write(new Message((MessageID)cpMove));
            rt_mutex_release(&mutex_robot);
        }
        cout << endl << flush;
    }
}

void Tasks::DetectLostSupRob(void *arg){
    //counter to detect loss of communication
    int cpt=0;
    bool kill_detectLostSupRobOk=0;
    Message* msgSend;
    
    //Wait the Communication with the Robot to be Set
    rt_sem_p(&sem_detectLostSupRob, TM_INFINITE);
    
    //Initialize the variable for the loop condition
    rt_mutex_acquire(&mutex_killDetectLostSupRob, TM_INFINITE);
        killDetectLostSupRob=0;
    rt_mutex_release(&mutex_killDetectLostSupRob);
    
    //Period = 1s
    rt_task_set_periodic(NULL, TM_NOW, 1000000000);
    
    while(!kill_detectLostSupRobOk){
        rt_task_wait_period(NULL);
        
        //Test Communication with Robot
        rt_mutex_acquire(&mutex_robot, TM_INFINITE);
            msgSend = robot.Write(robot.Ping());
        rt_mutex_release(&mutex_robot);
        
        if(msgSend->GetID() == MESSAGE_ANSWER_COM_ERROR || msgSend->GetID() == MESSAGE_ANSWER_ROBOT_TIMEOUT){
            
            cout << "Didn't Get Any Answer from Robot" << endl << flush;
            cpt++;
            
            if(cpt==3){
                //Trigger Kill of DetectLostSupRob
                rt_mutex_acquire(&mutex_killDetectLostSupRob, TM_INFINITE);
                    killDetectLostSupRob=1;
                rt_mutex_release(&mutex_killDetectLostSupRob);
                
                //Trigger Kill of the Battery acquisition
                rt_mutex_acquire(&mutex_killBattery, TM_INFINITE);
                    killBattery=1;
                rt_mutex_release(&mutex_killBattery);  
               
            }
        }
        
        else{
            cout << "I got an Answer from Robot" << endl << flush;
        }
        
        rt_mutex_acquire(&mutex_killDetectLostSupRob, TM_INFINITE);
            kill_detectLostSupRobOk=killDetectLostSupRob;
        rt_mutex_release(&mutex_killDetectLostSupRob);        
    }
    cout << "DetectLostSupRob dies";
}

/**
 * Write a message in a given queue
 * @param queue Queue identifier
 * @param msg Message to be stored
 */
void Tasks::WriteInQueue(RT_QUEUE *queue, Message *msg) {
    int err;
    if ((err = rt_queue_write(queue, (const void *) &msg, sizeof ((const void *) &msg), Q_NORMAL)) < 0) {
        cerr << "Write in queue failed: " << strerror(-err) << endl << flush;
        throw std::runtime_error{"Error in write in queue"};
    }
}

/**
 * Read a message from a given queue, block if empty
 * @param queue Queue identifier
 * @return Message read
 */
Message *Tasks::ReadInQueue(RT_QUEUE *queue) {
    int err;
    Message *msg;

    if ((err = rt_queue_read(queue, &msg, sizeof ((void*) &msg), TM_INFINITE)) < 0) {
        cout << "Read in queue failed: " << strerror(-err) << endl << flush;
        throw std::runtime_error{"Error in read in queue"};
    }/** else {
        cout << "@msg :" << msg << endl << flush;
    } /**/

    return msg;
}