Subversion Repositories xulalx25soc

////////////////////////////////////////////////////////////////////////////////

//

// Filename:    uartsim.h

//

// Project:     XuLA2-LX25 SoC based upon the ZipCPU

//

// Purpose:     

//

// Creator:     Dan Gisselquist, Ph.D.

//              Gisselquist Technology, LLC

//

////////////////////////////////////////////////////////////////////////////////

//

// Copyright (C) 2015-2016, Gisselquist Technology, LLC

//

// This program is free software (firmware): 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 MERCHANTIBILITY 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.  (It's in the $(ROOT)/doc directory, run make with no

// target there if the PDF file isn't present.)  If not, see

// <http://www.gnu.org/licenses/> for a copy.

//

// License:     GPL, v3, as defined and found on www.gnu.org,

//              http://www.gnu.org/licenses/gpl.html

//

//

////////////////////////////////////////////////////////////////////////////////

//

//

#ifndef UARTSIM_H

#define UARTSIM_H

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <poll.h>

#include <unistd.h>

#include <arpa/inet.h>

#include <signal.h>

#define TXIDLE  0

#define TXDATA  1

#define RXIDLE  0

#define RXDATA  1

class   UARTSIM {

        int     m_skt, m_con;

        unsigned m_setup;

        int     m_nparity, m_fixdp, m_evenp, m_nbits, m_nstop, m_baud_counts;

        int     m_rx_baudcounter, m_rx_state, m_rx_busy,

                m_rx_changectr, m_last_tx;

        int     m_tx_baudcounter, m_tx_state, m_tx_busy;

        unsigned        m_rx_data, m_tx_data;

        void    setup_listener(const int port);

        int     tick(const int i_tx);

public:

        UARTSIM(const int port);

        void    kill(void);

        void    setup(unsigned isetup);

        int     operator()(int i_tx) {

                return tick(i_tx); }

        int     operator()(int i_tx, unsigned isetup) {

                setup(isetup); return tick(i_tx); }

};

#endif