uwevologicss2cmodem.cpp

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//
// Copyright (c) 2019 Regents of the SIGNET lab, University of Padova.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 3. Neither the name of the University of Padova (SIGNET lab) nor the
//    names of its contributors may be used to endorse or promote products
//    derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
#include "phymac-clmsg.h"
#include <clmessage.h>
#include <hdr-uwal.h>
#include <ms2c_ClMessage.h>
#include <uwal.h>
#include <uwevologicss2cmodem.h>
#include <uwphy-clmsg.h>
#include <uwsocket.h>
#include <uwserial.h>
 
#include <cstring>
#include <iostream>
#include <iterator>
#include <string>
#include <ostream>
 
const std::chrono::milliseconds UwEvoLogicsS2CModem::MODEM_TIMEOUT =
        std::chrono::milliseconds(210);
 
const std::chrono::seconds UwEvoLogicsS2CModem::WAIT_DELIVERY_BURST =
        std::chrono::seconds(5);
 
const std::chrono::milliseconds UwEvoLogicsS2CModem::WAIT_DELIVERY_IM =
        std::chrono::milliseconds(1000);
 
uint UwEvoLogicsS2CModem::MAX_N_STATUS_QUERIES = 10;
 
static class UwEvoLogicsS2C_TclClass : public TclClass
{
 
public:
    UwEvoLogicsS2C_TclClass()
        : TclClass("Module/UW/UwModem/EvoLogicsS2C")
    {
    }
 
    TclObject *
    create(int args, const char *const *argv)
    {
        return (new UwEvoLogicsS2CModem());
    }
 
} class_evologicss2c;
 
UwEvoLogicsS2CModem::UwEvoLogicsS2CModem()
    : UwModem()
    , p_connector(new UwSocket())
    , p_interpreter(new UwInterpreterS2C())
    , status(ModemState::AVAILABLE)
    , tx_status(TransmissionState::TX_IDLE)
    , status_m()
    , tx_status_m()
    , tx_queue_m()
    , status_cv()
    , tx_status_cv()
    , tx_queue_cv()
    , receiving(false)
    , transmitting(false)
    , im_status_updated(false)
    , rx_thread()
    , tx_thread()
    , tx_mode(TransmissionMode::IM)
    , ack_mode(false)
    , curr_source_level(3)
    , n_rx_failed(0)
    , pend_source_level(3)
    , source_level_change(false)
    , size2dur_()
    , txdur_file_name_("")
    , txdur_token_separator_(';')
    , initLUT_(false)
 
{
    bind("buffer_size", (int *) &DATA_BUFFER_LEN);
    bind("max_read_size", (int *) &MAX_READ_BYTES);
    bind("max_n_status_queries",
            (uint *) &UwEvoLogicsS2CModem::MAX_N_STATUS_QUERIES);
}
 
UwEvoLogicsS2CModem::~UwEvoLogicsS2CModem()
{
    stop();
}
 
void
UwEvoLogicsS2CModem::recv(Packet *p)
{
    // push new incoming pck into tx_queue
    hdr_cmn *ch = HDR_CMN(p);
    hdr_MPhy *ph = HDR_MPHY(p);
    if (ch->direction() == hdr_cmn::UP) {
        if (isOn == true) {
            startRx(p);
            endRx(p);
        } else {
            Packet::free(p);
        }
    } else { // DOWN
        if (!isOn) {
            return;
        }
        ph->Pr = 0;
        ph->Pn = 0;
        ph->Pi = 0;
        ph->txtime = NOW;
        ph->rxtime = ph->txtime;
 
        ph->worth_tracing = false;
 
        ph->srcSpectralMask = getTxSpectralMask(p);
        ph->srcAntenna = getTxAntenna(p);
        ph->srcPosition = getPosition();
        ph->dstSpectralMask = 0;
        ph->dstPosition = 0;
        ph->dstAntenna = 0;
        ph->modulationType = getModulationType(p);
        ph->duration = getTxDuration(p);
 
        std::unique_lock<std::mutex> tx_lock(tx_queue_m);
        tx_queue.push(p);
        tx_lock.unlock();
        printOnLog(LogLevel::DEBUG,
                "EVOLOGICSS2CMODEM",
                "recv::PUSHING_IN_TX_QUEUE");
        tx_queue_cv.notify_one();
    }
}
 
int
UwEvoLogicsS2CModem::command(int argc, const char *const *argv)
{
    // Tcl &tcl = Tcl::instance();
 
    if (argc == 2) {
        if (!strcmp(argv[1], "start")) {
            start();
            return TCL_OK;
        }
        if (!strcmp(argv[1], "stop")) {
            stop();
            return TCL_OK;
        }
        if (!strcmp(argv[1], "setBurstMode")) {
            tx_mode = TransmissionMode::BURST;
            return TCL_OK;
        }
        if (!strcmp(argv[1], "setIMMode")) {
            tx_mode = TransmissionMode::IM;
            return TCL_OK;
        }
        if (!strcmp(argv[1], "enableIMAck")) {
            ack_mode = true;
            return TCL_OK;
        }
        if (!strcmp(argv[1], "disableIMAck")) {
            ack_mode = false;
            return TCL_OK;
        }
        if (!strcmp(argv[1], "enableExtProtoMode")) {
            p_interpreter->setExtProtoMode(true);
            return TCL_OK;
        }
        if (!strcmp(argv[1], "disableExtProtoMode")) {
            p_interpreter->setExtProtoMode(false);
            return TCL_OK;
        }
        if (!strcmp(argv[1], "initLUT")) {
            initializeLUT();
            return TCL_OK;
        }
    } else if (argc == 3) {
        if (!strcmp(argv[1], "setConnector")) {
            if(!strcmp(argv[2], "SOCKET")) {
                p_connector.reset(new UwSocket());
                return TCL_OK;
            }
            if(!strcmp(argv[2], "SERIAL")) {
                p_connector.reset(new UwSerial());
                return TCL_OK;
            }
            fprintf(stderr, "Invalid connector type, choose between SOCKET and SERIAL");
            return TCL_ERROR;
        }
        if (!strcmp(argv[1], "setSourceLevel")) {
            std::stringstream sl_ss(argv[2]);
            int sl_;
            if (sl_ss >> sl_)
                return TCL_OK;
            else
                return TCL_ERROR;
        }
        if (!strcmp(argv[1], "setTXDurationFileName")) {
            std::string tmp_ = ((char *) argv[2]);
            if (tmp_.size() == 0) {
                fprintf(stderr, "Empty string for the file name");
                return TCL_ERROR;
            }
            txdur_file_name_ = tmp_;
            return TCL_OK;
        }
        if (!strcmp(argv[1], "setLUTSeparator")) {
            string tmp_ = ((char *) argv[2]);
            if (tmp_.size() == 0) {
                fprintf(stderr, "Empty char for the file separator");
                return TCL_ERROR;
            }
            txdur_token_separator_ = tmp_.at(0);
            return TCL_OK;
        }
    }
 
    return UwModem::command(argc, argv);
}
 
void
UwEvoLogicsS2CModem::initializeLUT()
{
    ifstream input_file_;
    string line_;
 
    input_file_.open(txdur_file_name_.c_str());
 
    if (input_file_.is_open()) {
        while (std::getline(input_file_, line_)) {
            if (line_[0] == '#')
                continue;
 
            std::istringstream line_stream(line_);
            std::string token;
 
            std::getline(line_stream, token, txdur_token_separator_);
            int size = std::atoi(token.c_str());
            if (size < 1) {
                printOnLog(LogLevel::ERROR,
                        "EVOLOGICSS2CMODEM",
                        "initializeLUT::INVALID_PKT_SIZE " + token);
                continue;
            }
 
            std::getline(line_stream, token, txdur_token_separator_);
            double duration = 0;
            char *end {};
            if (token.length() > 0) {
                duration = std::strtod(token.c_str(), &end);
 
                if (!(duration > 0))
                    printOnLog(LogLevel::ERROR,
                            "EVOLOGICSS2CMODEM",
                            "initializeLUT::INVALID_DURATION_FOR_PKT_SIZE "
                            + std::to_string(size));
            }
 
            std::getline(line_stream, token, txdur_token_separator_);
            double proc_delay = 0;
            if (token.length() > 0) {
                proc_delay = std::strtod(token.c_str(), &end);
                duration += proc_delay;
 
                if (!(proc_delay > 0))
                    printOnLog(LogLevel::ERROR,
                            "EVOLOGICSS2CMODEM",
                            "initializeLUT::INVALID_PROC_DELAY_FOR_PKT_SIZE "
                            + std::to_string(size));
            }
 
            size2dur_[size] = duration;
        }
 
        initLUT_ = true;
    } else {
        printOnLog(LogLevel::ERROR,
                "EVOLOGICSS2CMODEM",
                "initializeLUT::FAIL_TO_READ_FROM_FILE " + txdur_file_name_);
    }
}
 
int
UwEvoLogicsS2CModem::recvSyncClMsg(ClMessage *m)
{
    if (m->type() == CLMSG_S2C_POWER_LEVEL) {
        ClMsgS2CPowerLevel *msg = static_cast<ClMsgS2CPowerLevel *>(m);
        if (msg->getReqType() == ClMsgUwPhy::SET_REQ) {
            printOnLog(LogLevel::INFO,
                    "UWEVOLOGICSS2CMODEM",
                    "RECEIVED_CLMSG_FOR_POWER_CHANGE");
            pend_source_level = msg->get_power_level();
            source_level_change = true;
            msg->setReqType(ClMsgUwPhy::SET_REPLY);
            return 0;
        } else if (msg->getReqType() == ClMsgUwPhy::GET_REQ) {
            msg->set_power_level(curr_source_level);
            msg->setReqType(ClMsgUwPhy::GET_REPLY);
            return 0;
        }
    } else if (m->type() == CLMSG_S2C_TX_MODE) {
        ClMsgS2CTxMode *msg = static_cast<ClMsgS2CTxMode *>(m);
        if (msg->getReqType() == ClMsgUwPhy::SET_REQ) {
            if (msg->get_tx_mode() == ClMsgS2CTxMode::S2C_TX_MODE_IM) {
                tx_mode = TransmissionMode::BURST;
            } else {
                tx_mode = TransmissionMode::IM;
            }
            msg->setReqType(ClMsgUwPhy::SET_REPLY);
            return 0;
        } else if (msg->getReqType() == ClMsgUwPhy::GET_REQ) {
            if (tx_mode == TransmissionMode::IM) {
                msg->set_tx_mode(ClMsgS2CTxMode::S2C_TX_MODE_IM);
            } else {
                msg->set_tx_mode(ClMsgS2CTxMode::S2C_TX_MODE_BURST);
            }
            msg->setReqType(ClMsgUwPhy::GET_REPLY);
            return 0;
        }
    } else if (m->type() == CLMSG_S2C_RX_FAILED) {
        ClMsgS2CRxFailed *msg = static_cast<ClMsgS2CRxFailed *>(m);
        if (msg->getReqType() == ClMsgUwPhy::GET_REQ) {
            msg->set_n_rx_failed(n_rx_failed);
            msg->setReqType(ClMsgUwPhy::GET_REPLY);
            return 0;
        } else {
            return 1;
        }
    } else if (m->type() == CLMSG_MAC2PHY_GETTXDURATION) {
        Packet *p = ((ClMsgMac2PhyGetTxDuration *) m)->pkt;
        hdr_cmn *ch = HDR_CMN(p);
 
        if (ch->direction() == hdr_cmn::DOWN) {
            double duration = getTxDuration(p);
 
            if (duration > 0)
                printOnLog(LogLevel::INFO,
                        "EVOLOGICSS2CMODEM",
                        "recvSyncClMsg::SET_TXDURATION " +
                                std::to_string(duration));
 
            ((ClMsgMac2PhyGetTxDuration *) m)->setDuration(duration);
 
            return 0;
        }
 
        // Don't set TX duration on RX.
        ((ClMsgMac2PhyGetTxDuration *) m)->setDuration(-1);
 
        return 1;
    }
 
    return MPhy::recvSyncClMsg(m);
}
 
double
UwEvoLogicsS2CModem::getTxDuration(Packet *p)
{
    hdr_uwal *uwalh = HDR_UWAL(p);
    double tx_duration = -1;
 
    if (initLUT_)
        tx_duration = size2dur_[uwalh->binPktLength()];
    else
        printOnLog(LogLevel::ERROR,
                "EVOLOGICSS2CMODEM",
                "getTxDuration::FAIL_TO_GET_TXDURATION");
 
    return tx_duration;
}
 
bool
UwEvoLogicsS2CModem::configure(Config cmd)
{
    std::string config_cmd{""};
 
    switch (cmd) {
        case Config::ATL_GET: {
            std::string command = p_interpreter->buildGetATL();
            break;
        }
        case Config::ATL_SET: {
            std::string command = p_interpreter->buildSetATL(pend_source_level);
            break;
        }
        case Config::ATAL_GET: {
            std::string command = p_interpreter->buildGetATAL();
            break;
        }
        case Config::ATAL_SET: {
            std::string command = p_interpreter->buildSetATAL(modemID);
            break;
        }
        case Config::MODEM_STATUS: {
            std::string command = p_interpreter->buildATS();
            break;
        }
        case Config::CURR_SETTINGS: {
            std::string command = p_interpreter->buildATV();
            break;
        }
        default:
            return false;
    }
 
    std::unique_lock<std::mutex> state_lock(status_m);
 
    if (status_cv.wait_for(state_lock, MODEM_TIMEOUT, [&] {
            return status == ModemState::AVAILABLE;
        })) {
 
        status = ModemState::BUSY;
 
        std::lock_guard<std::mutex> tx_state_lock(tx_status_m);
 
        if (!p_connector->writeToDevice(config_cmd)) {
            printOnLog(LogLevel::ERROR,
                    "EVOLOGICSS2CMODEM",
                    "configure::FAIL_TO_WRITE_TO_DEVICE=" + config_cmd);
            return false;
        }
 
        state_lock.unlock();
        tx_status = TransmissionState::TX_PENDING;
 
    } else {
 
        return false;
    }
 
    return true;
}
 
void
UwEvoLogicsS2CModem::startTx(Packet *p)
{
    // this method does nothing in ns, so it can be called from an
    // external thread
    // save MAC and AL headers and write payload
    hdr_mac *mach = HDR_MAC(p);
    hdr_uwal *uwalh = HDR_UWAL(p);
    std::string payload;
    payload.assign(uwalh->binPkt(), uwalh->binPktLength());
 
    // build command to perform a SEND or SENDIM
    std::string cmd_s;
    if (tx_mode == TransmissionMode::IM) {
        cmd_s = p_interpreter->buildSendIM(payload, mach->macDA(), ack_mode);
    } else {
        cmd_s = p_interpreter->buildSend(payload, mach->macDA());
    }
 
    printOnLog(LogLevel::INFO,
            "EVOLOGICSS2CMODEM",
            "startTx::COMMAND_TX::" + cmd_s);
 
    // write the obtained command to the device, through the connector
    std::unique_lock<std::mutex> state_lock(status_m);
    if (status_cv.wait_for(state_lock, MODEM_TIMEOUT, [&] {
            return status == ModemState::AVAILABLE;
        })) {
 
        status = ModemState::BUSY;
 
        std::unique_lock<std::mutex> tx_state_lock(tx_status_m);
 
        if ((p_connector->writeToDevice(cmd_s)) < 0) {
            printOnLog(LogLevel::ERROR,
                    "EVOLOGICSS2CMODEM",
                    "startTx::FAIL_TO_WRITE_TO_DEVICE=" + cmd_s);
            return;
        }
 
        tx_status = TransmissionState::TX_PENDING;
        status_cv.wait_for(state_lock, MODEM_TIMEOUT, [&] {
            return status == ModemState::AVAILABLE;
        });
        state_lock.unlock();
 
        if (tx_mode == TransmissionMode::IM) {
 
            size_t status_polling_counter = 0;
            im_status_updated.store(false);
            while (status_polling_counter < MAX_N_STATUS_QUERIES &&
                    tx_status != TransmissionState::TX_IDLE) {
 
                cmd_s = p_interpreter->buildATDI();
 
                printOnLog(LogLevel::INFO,
                        "EVOLOGICSS2CMODEM",
                        "startTx::SENDING=" + cmd_s);
 
                if ((p_connector->writeToDevice(cmd_s)) < 0) {
                    printOnLog(LogLevel::ERROR,
                            "EVOLOGICSS2CMODEM",
                            "startTx::FAIL_TO_WRITE_TO_DEVICE=" + cmd_s);
                }
 
                tx_status_cv.wait_for(tx_state_lock, WAIT_DELIVERY_IM, [&] {
                    return (tx_status == TransmissionState::TX_IDLE);
                });
 
                if (tx_status == TransmissionState::TX_IDLE) {
                    printOnLog(LogLevel::DEBUG,
                            "EVOLOGICSS2CMODEM",
                            "startTx::TX_IDLE");
                    break;
                } else {
                    im_status_updated.store(false);
                    printOnLog(LogLevel::DEBUG,
                            "EVOLOGICSS2CMODEM",
                            "startTx::TX_PENDING");
                }
 
                status_polling_counter++;
            }
 
            // In case the attempts reached MAX_N_STATUS_QUERIES, force
            // tx_status
            if (status_polling_counter == MAX_N_STATUS_QUERIES &&
                    tx_status != TransmissionState::TX_IDLE) {
                printOnLog(LogLevel::ERROR,
                        "EVOLOGICSS2CMODEM",
                        "startTx::MAX_N_STATUS_QUERIES_REACHED");
            }
 
        } else { // tx_mode == TransmissionMode::BURST
            tx_status_cv.wait_for(tx_state_lock, WAIT_DELIVERY_BURST, [&] {
                return (tx_status == TransmissionState::TX_IDLE);
            });
        }
 
        std::function<void(UwModem &, Packet * p)> callback =
                &UwModem::realTxEnded;
        ModemEvent e = {callback, p};
        event_q.push(e);
 
    } else {
        printOnLog(LogLevel::ERROR,
                "EVOLOGICSS2CMODEM",
                "startTx::TIMEOUT_EXPIRED::FORCING_MODEM_AVAILABILITY");
        status = ModemState::AVAILABLE;
    }
}
 
void
UwEvoLogicsS2CModem::startRx(Packet *p)
{
    printOnLog(LogLevel::INFO,
            "EVOLOGICSS2CMODEM",
            "startRx::CALL_PHY2MACSTARTRX");
    Phy2MacStartRx(p);
}
 
void
UwEvoLogicsS2CModem::endRx(Packet *p)
{
    printOnLog(LogLevel::INFO, "EVOLOGICSS3CMODEM", "endRx::CALL_SENDUP");
    sendUp(p, 0.01);
}
 
void
UwEvoLogicsS2CModem::start()
{
    if (modem_address == "") {
        std::cout << "ERROR: Modem address not set!" << std::endl;
        printOnLog(
                LogLevel::ERROR, "EVOLOGICSS2CMODEM", "start::ADDRESS_NOT_SET");
        return;
    }
 
    if (!p_connector->openConnection(modem_address)) {
        std::cout << "ERROR: connection to modem failed to open: "
                  << modem_address << std::endl;
        printOnLog(LogLevel::ERROR,
                "EVOLOGICSS2CMODEM",
                "start::CONNECTION_OPEN_FAILED");
        return;
    }
 
    // set flags to true so loops can start
    receiving.store(true);
    transmitting.store(true);
 
    // branch off threads
    rx_thread = std::thread(&UwEvoLogicsS2CModem::receivingData, this);
 
    tx_thread = std::thread(&UwEvoLogicsS2CModem::transmittingData, this);
 
    checkTimer = new CheckTimer(this);
    checkTimer->resched(period);
}
 
void
UwEvoLogicsS2CModem::stop()
{
 
    std::cout << "UwEvoLogicsS2CModem::stop() close conn " << std::endl;
    printOnLog(LogLevel::INFO, "EVOLOGICSS2CMODEM", "stop::CLOSING_CONNECTION");
 
    receiving.store(false);
    transmitting.store(false);
    tx_queue_cv.notify_one();
    if (tx_thread.joinable())
        tx_thread.join();
    if (p_connector->isConnected() && !p_connector->closeConnection()) {
        printOnLog(LogLevel::ERROR,
                "EVOLOGICSS2CMODEM",
                "stop::CONNECTION_CLOSE_FAIL");
    }
    if (rx_thread.joinable()) {
        rx_thread.join();
    }
 
    checkTimer->force_cancel();
}
 
void
UwEvoLogicsS2CModem::transmittingData()
{
    while (transmitting.load()) {
 
        std::unique_lock<std::mutex> tx_lock(tx_queue_m);
        tx_queue_cv.wait(
                tx_lock, [&] { return !tx_queue.empty() || !transmitting; });
        if (!transmitting) {
            break;
        }
 
        Packet *pck = tx_queue.front();
        tx_queue.pop();
        tx_lock.unlock();
        if (pck) {
            startTx(pck);
        }
 
        printOnLog(LogLevel::DEBUG,
                "EVOLOGICSS2CMODEM",
                "transmittingData::BLOCKING_ON_NEXT_PACKET");
    }
}
 
void
UwEvoLogicsS2CModem::receivingData()
{
    data_buffer.resize(DATA_BUFFER_LEN);
    std::fill(data_buffer.begin(), data_buffer.end(), '\0');
    // iterators that keep track of read/write operations
    std::vector<char>::iterator beg_it = data_buffer.begin();
    std::vector<char>::iterator end_it = data_buffer.begin();
    // iterators that keep track of commands research
    std::vector<char>::iterator cmd_b = data_buffer.begin();
    std::vector<char>::iterator cmd_e = data_buffer.begin();
    UwInterpreterS2C::Response cmd = UwInterpreterS2C::Response::NO_COMMAND;
    int r_bytes = 0;
    int offset = 0;
 
    while (receiving.load()) {
 
        r_bytes = p_connector->readFromDevice(
                &(*beg_it) + offset, MAX_READ_BYTES - r_bytes);
 
        end_it = beg_it + r_bytes + offset;
 
        while (receiving.load() && r_bytes > 0 &&
                (cmd = p_interpreter->findResponse(beg_it, end_it, cmd_b)) !=
                        UwInterpreterS2C::Response::NO_COMMAND) {
 
            while (receiving.load() &&
                    !p_interpreter->parseResponse(
                            cmd, end_it, cmd_b, cmd_e, rx_payload)) {
 
                int new_r_bytes = p_connector->readFromDevice(
                        &(*end_it), MAX_READ_BYTES - r_bytes);
 
                r_bytes += new_r_bytes;
                end_it = beg_it + r_bytes;
            }
 
            printOnLog(LogLevel::DEBUG,
                    "EVOLOGICSS2CMODEM",
                    "receivingData::RX_MSG=" + std::string(cmd_b, cmd_e));
 
            updateStatus(cmd);
            std::fill(cmd_b, cmd_e, '\0');
            cmd_b = cmd_e + 1;
        }
 
        // check if bytes are left after parsing and move them to beginning
        if ((int) (cmd_e - beg_it) < r_bytes) {
            offset = r_bytes - (int) (cmd_e - beg_it);
            std::copy(cmd_e, cmd_e + offset, data_buffer.begin());
        } else {
            offset = 0;
        }
    }
}
 
void
UwEvoLogicsS2CModem::updateStatus(UwInterpreterS2C::Response cmd)
{
    std::unique_lock<std::mutex> state_lock(status_m);
    switch (cmd) {
 
        case UwInterpreterS2C::Response::RECVIM: {
 
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            state_lock.unlock();
 
            Packet *p = Packet::alloc();
            createRxPacket(p);
            std::function<void(UwModem &, Packet * p)> callback =
                    &UwModem::recv;
            ModemEvent e = {callback, p};
            event_q.push(e);
            break;
        }
        case UwInterpreterS2C::Response::RECV: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            state_lock.unlock();
 
            Packet *p = Packet::alloc();
            createRxPacket(p);
            std::function<void(UwModem &, Packet * p)> callback =
                    &UwModem::recv;
            ModemEvent e = {callback, p};
            event_q.push(e);
            break;
        }
        case UwInterpreterS2C::Response::OK: {
            status = ModemState::AVAILABLE;
            state_lock.unlock();
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::EMPTY: {
            status = ModemState::AVAILABLE;
            state_lock.unlock();
            status_cv.notify_all();
            std::unique_lock<std::mutex> tx_state_lock(tx_status_m);
            tx_status = TransmissionState::TX_IDLE;
            im_status_updated.store(true);
            tx_status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::BUSY: {
            status = ModemState::BUSY;
            state_lock.unlock();
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::DELIVERING: {
            std::unique_lock<std::mutex> tx_state_lock(tx_status_m);
            status = ModemState::AVAILABLE;
            im_status_updated.store(true);
            tx_status_cv.notify_all();
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::DELIVERED: {
            status = ModemState::AVAILABLE;
            state_lock.unlock();
            status_cv.notify_all();
            std::unique_lock<std::mutex> tx_state_lock(tx_status_m);
            tx_status = TransmissionState::TX_IDLE;
            im_status_updated.store(true);
            tx_status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::DROPCNT: {
            status = ModemState::AVAILABLE;
            state_lock.unlock();
            status_cv.notify_all();
            std::unique_lock<std::mutex> tx_state_lock(tx_status_m);
            tx_status = TransmissionState::TX_IDLE;
            tx_status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::PHYOFF: {
            status = ModemState::QUIT;
            state_lock.unlock();
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::NOT_ACCEPTED: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::WRONG_ADDR: {
            status = ModemState::AVAILABLE;
            state_lock.unlock();
            status_cv.notify_all();
            std::unique_lock<std::mutex> tx_state_lock(tx_status_m);
            tx_status = TransmissionState::TX_IDLE;
            im_status_updated.store(true);
            tx_status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::CONN_CLOSED: {
            status = ModemState::AVAILABLE;
            state_lock.unlock();
            status_cv.notify_all();
            std::unique_lock<std::mutex> tx_state_lock(tx_status_m);
            tx_status = TransmissionState::TX_IDLE;
            im_status_updated.store(true);
            tx_status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::BUFF_NOT_EMPTY: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::OUT_OF_RANGE: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::PROTOCOL_ID: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::INTERNAL: {
            status = ModemState::RESET;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::BUFFER_FULL: {
            status = ModemState::BUSY;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::FAIL: {
            status = ModemState::AVAILABLE;
            state_lock.unlock();
            status_cv.notify_all();
            std::unique_lock<std::mutex> tx_state_lock(tx_status_m);
            tx_status = TransmissionState::TX_IDLE;
            im_status_updated.store(true);
            tx_status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::INIT_NOISE: {
            status = ModemState::NOISE;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::INIT_DEAF: {
            status = ModemState::DEAF;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::INIT_LISTEN: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::RECVSTART: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::RECVEND: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::RECVFAIL: {
            n_rx_failed++;
            printOnLog(LogLevel::INFO,
                    "EVOLOGICSS2CMODEM",
                    "updateStatus::FAILED_RX");
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::SENDSTART: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::SENDEND: {
            status = ModemState::AVAILABLE;
            state_lock.unlock();
            status_cv.notify_all();
            std::unique_lock<std::mutex> tx_state_lock(tx_status_m);
            tx_status = TransmissionState::TX_IDLE;
            im_status_updated.store(true);
            tx_status_cv.notify_all();
            break;
        }
        case UwInterpreterS2C::Response::BITRATE: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
            }
                case UwInterpreterS2C::Response::USBLANGLES: {
                        status = ModemState::AVAILABLE;
                        status_cv.notify_all();
                        break;
                }
                case UwInterpreterS2C::Response::USBLLONG: {
                        status = ModemState::AVAILABLE;
                        std::shared_ptr<USBLInfo> pos = p_interpreter->getUSBLInfo();
 
                        std::string log_msg = "updateStatus::USBLLONG::curr_time=" +
                            std::to_string(pos->curr_time) +
                            ",meas_time=" + std::to_string(pos->meas_time) +
                            ",remote_address=" + std::to_string(pos->r_address) +
                            ",X=" + std::to_string(pos->X) +
                            ",Y=" + std::to_string(pos->Y) +
                            ",Z=" + std::to_string(pos->Z) +
                            ",E=" + std::to_string(pos->E) +
                            ",N=" + std::to_string(pos->N) +
                            ",U=" + std::to_string(pos->U) +
                            ",accuracy=" + std::to_string(pos->accuracy);
                          printOnLog(LogLevel::INFO, "EVOLOGICSS2CMODEM", log_msg);
 
                        status_cv.notify_all();
                        break;
                }
        case UwInterpreterS2C::Response::UNKNOWN: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
            break;
        }
        default: {
            status = ModemState::AVAILABLE;
            status_cv.notify_all();
        }
    }
 
    printOnLog(LogLevel::DEBUG, "EVOLOGICSS2CMODEM", "updateStatus::END");
}
 
void
UwEvoLogicsS2CModem::setFailedTx(Packet *p)
{
    hdr_cmn *ch = HDR_CMN(p);
    ch->error_ = 1;
}
 
void
UwEvoLogicsS2CModem::createRxPacket(Packet *p)
{
    hdr_uwal *uwalh = HDR_UWAL(p);
    uwalh->binPktLength() = rx_payload.size();
    std::memset(uwalh->binPkt(), 0, uwalh->binPktLength());
    std::copy(rx_payload.begin(), rx_payload.end(), uwalh->binPkt());
    HDR_CMN(p)->direction() = hdr_cmn::UP;
}