CGyroKVHDSP3000.cpp

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          http://www.mrpt.org/                          |
   |                                                                        |
   | Copyright (c) 2005-2017, Individual contributors, see AUTHORS file     |
   | See: http://www.mrpt.org/Authors - All rights reserved.                |
   | Released under BSD License. See details in http://www.mrpt.org/License |
   +------------------------------------------------------------------------+ */
 
#include "hwdrivers-precomp.h"  // Precompiled headers
 
#include <mrpt/hwdrivers/CGyroKVHDSP3000.h>
#include <mrpt/obs/CObservationIMU.h>
 
#include <thread>
 
IMPLEMENTS_GENERIC_SENSOR(CGyroKVHDSP3000, mrpt::hwdrivers)
 
using namespace mrpt::utils;
using namespace mrpt::comms;
using namespace mrpt::obs;
using namespace mrpt::hwdrivers;
using namespace std;
 
/*-------------------------------------------------------------
                                        CGyroKVHDSP3000
-------------------------------------------------------------*/
CGyroKVHDSP3000::CGyroKVHDSP3000()
        : m_COMbauds(38400),
          m_com_port(),
          m_sensorPose(),
          m_mode(RATE),
          m_firstInteration(true)
{
        m_state = ssInitializing;
        m_sensorLabel = "KVH_DSP3000";
        m_serialPort = nullptr;
}
 
/*-------------------------------------------------------------
                                        ~CGyroKVHDSP3000
-------------------------------------------------------------*/
CGyroKVHDSP3000::~CGyroKVHDSP3000()
{
        m_serialPort->close();
        delete m_serialPort;
}
 
/*-------------------------------------------------------------
                                        doProcess
-------------------------------------------------------------*/
void CGyroKVHDSP3000::doProcess()
{
        if (m_state == ssError)
        {
                std::this_thread::sleep_for(200ms);
                initialize();
        }
 
        if (m_state == ssError) return;
 
        string msg;
        CObservationIMU::Ptr observationGyro =
                mrpt::make_aligned_shared<CObservationIMU>();
        observationGyro->timestamp = mrpt::system::now();
 
        msg = m_serialPort->ReadString(-1, nullptr, "\n");
 
        observationGyro->sensorPose = m_sensorPose;
        observationGyro->sensorLabel = m_sensorLabel;
        string delimiter(" ");
        vector<string> words;
        mrpt::system::tokenize(msg, delimiter, words);
        if (words.size() < 2) return;
        if (words[1].c_str()[0] == '0') return;
        double mesure = atof(words[0].c_str());
        switch (m_mode)
        {
                case RATE:
                        observationGyro->rawMeasurements[IMU_YAW_VEL] = DEG2RAD(mesure);
                        observationGyro->dataIsPresent[IMU_YAW_VEL] = true;
                        break;
                case INTEGRATED_ANGLE:
                case INCREMENTAL_ANGLE:
                        observationGyro->rawMeasurements[IMU_YAW] = DEG2RAD(mesure);
                        observationGyro->dataIsPresent[IMU_YAW] = true;
                        break;
        }
 
        if (!m_firstInteration)
        {
                appendObservation(observationGyro);
        }
        else
                m_firstInteration = false;
}
 
/*-------------------------------------------------------------
                                        initialize
-------------------------------------------------------------*/
void CGyroKVHDSP3000::initialize()
{
        m_process_rate = 100;
 
        /*
          Open modem device for reading and writing and not as controlling tty
          because we don't want to get killed if linenoise sends CTRL-C.
        */
        if (m_serialPort) delete m_serialPort;
        m_serialPort = new CSerialPort(m_com_port);
        if (!(m_serialPort->isOpen())) THROW_EXCEPTION("can't open serial port");
        cout << "m_COMbaud " << m_COMbauds << endl;
        m_serialPort->setConfig(m_COMbauds);
 
        changeMode(m_mode);
        resetIncrementalAngle();
        m_state = ssWorking;
}
 
/*-------------------------------------------------------------
                                        loadConfig_sensorSpecific
-------------------------------------------------------------*/
void CGyroKVHDSP3000::loadConfig_sensorSpecific(
        const mrpt::utils::CConfigFileBase& configSource,
        const std::string& iniSection)
{
        m_sensorPose.setFromValues(
                configSource.read_float(iniSection, "pose_x", 0, false),
                configSource.read_float(iniSection, "pose_y", 0, false),
                configSource.read_float(iniSection, "pose_z", 0, false),
                DEG2RAD(configSource.read_float(iniSection, "pose_yaw", 0, false)),
                DEG2RAD(configSource.read_float(iniSection, "pose_pitch", 0, false)),
                DEG2RAD(configSource.read_float(iniSection, "pose_roll", 0, false)));
        string operatingMode =
                configSource.read_string(iniSection, "operatingMode", "rate", false);
        cout << "Operating mode : " << operatingMode << endl;
        if (operatingMode == "incremental")
        {
                m_mode = INCREMENTAL_ANGLE;
                cout << "Incremental mode" << endl;
        }
        else if (operatingMode == "integral")
        {
                m_mode = INTEGRATED_ANGLE;
                cout << "Integrated mode" << endl;
        }
        else
        {
                m_mode = RATE;
                cout << "Rate mode" << endl;
        }
        m_com_port =
                configSource.read_string(iniSection, "COM_port_LIN", m_com_port, false);
}
 
void CGyroKVHDSP3000::changeMode(GYRO_MODE _newMode)
{
        m_mode = _newMode;
        char commande[3];
        switch (m_mode)
        {
                case RATE:
                        commande[0] = 'R';
                        break;
                case INTEGRATED_ANGLE:
                        commande[0] = 'P';
                        break;
                case INCREMENTAL_ANGLE:
                        commande[0] = 'A';  // incremental.
                        break;
        }
        commande[1] = 0x0A;
        commande[2] = 0;
        // we send the command four times to be sure that the command will be
        // interpreted by the sensor.
        if (m_serialPort->Write(commande, 3 * sizeof(char)) <= 0)
        {
                THROW_EXCEPTION("can't write on serial port");
        }
}
 
void CGyroKVHDSP3000::resetIncrementalAngle(void)
{
        if (m_mode != RATE)
        {
                char commande[3];
                commande[0] = 'Z';
                commande[1] = '\n';
                commande[2] = 0;
                if (m_serialPort->Write(commande, 3 * sizeof(char)) <= 0)
                {
                        THROW_EXCEPTION("can't write on serial port");
                }
        }
}