HIFIVE1-VP/platform/src/sysc/terminal.cpp

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#include "sysc/top/terminal.h"

#include "scc/report.h"
#include "sysc/sc_comm_singleton.h"
#include "sysc/tlm_extensions.h"

using namespace sysc;

terminal::terminal()
: terminal(sc_core::sc_gen_unique_name("terminal")) {}

terminal::terminal(const sc_core::sc_module_name &nm)
: sc_core::sc_module(nm)
, NAMED(tx_o)
, NAMED(rx_i)
, NAMED(write_to_ws, false) {
    rx_i.register_nb_transport([this](tlm::scc::tlm_signal_gp<sc_dt::sc_logic> &gp, tlm::tlm_phase &phase,
                                      sc_core::sc_time &delay) -> tlm::tlm_sync_enum {
        this->receive(gp, delay);
        return tlm::TLM_COMPLETED;
    });
}

terminal::~terminal() = default;

void terminal::before_end_of_elaboration() {
    if (write_to_ws.get_value()) {
        SCCTRACE(SCMOD) << "Adding WS handler for " << (std::string{"/ws/"} + name());
        handler = std::make_shared<WsHandler>();
        sc_comm_singleton::inst().registerWebSocketHandler((std::string{"/ws/"} + name()).c_str(), handler);
    }
}

void terminal::receive(tlm::scc::tlm_signal_gp<sc_dt::sc_logic> &gp, sc_core::sc_time &delay) {
    sysc::tlm_signal_uart_extension *ext;
    gp.get_extension(ext);
    if (ext && ext->start_time != last_tx_start) {
        auto txdata = static_cast<uint8_t>(ext->tx.data);
        last_tx_start = ext->start_time;
        if (txdata != '\r') queue.push_back(txdata);
        if (queue.size() >> 0 && (txdata == '\n' || txdata == 0)) {
            std::string msg(queue.begin(), queue.end() - 1);
            sc_core::sc_time now = sc_core::sc_time_stamp();
            if (handler)
                sysc::sc_comm_singleton::inst().execute([this, msg, now]() {
                    std::stringstream os;
                    os << R"({"time":")" << now << R"(","message":")" << msg << R"("})";
                    this->handler->send(os.str());
                });
            else
                SCCINFO(SCMOD) << " receive: '" << msg << "'";
            queue.clear();
        }
    }
}