//
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// Filename: llcomms.cpp
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// Filename: llcomms.cpp
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//
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//
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// Project: UART to WISHBONE FPGA library
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// Project: OpenArty, an entirely open SoC based upon the Arty platform
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//
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//
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// Purpose: This is the C++ program on the command side that will interact
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// Purpose: This is the C++ program on the command side that will interact
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// with a UART on an FPGA, both sending and receiving characters.
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// with a UART on an FPGA, both sending and receiving characters.
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// Any bus interaction will call routines from this lower level
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// Any bus interaction will call routines from this lower level
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// library to accomplish the actual connection to and
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// library to accomplish the actual connection to and
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// transmission to/from the board.
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// transmission to/from the board.
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//
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//
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// Creator: Dan Gisselquist
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// Gisselquist Tecnology, LLC
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//
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//
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// Copyright: 2015
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Technology, LLC
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//
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////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2015-2016, Gisselquist Technology, LLC
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//
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// This program is free software (firmware): you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// by the Free Software Foundation, either version 3 of the License, or (at
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// your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program. (It's in the $(ROOT)/doc directory, run make with no
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// target there if the PDF file isn't present.) If not, see
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// <http://www.gnu.org/licenses/> for a copy.
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//
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// License: GPL, v3, as defined and found on www.gnu.org,
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// http://www.gnu.org/licenses/gpl.html
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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//
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//
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#include <sys/socket.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <fcntl.h>
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#include <termios.h>
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#include <termios.h>
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#include <netinet/in.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <string.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <errno.h>
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#include <errno.h>
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#include <arpa/inet.h>
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#include <arpa/inet.h>
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#include <assert.h>
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#include <assert.h>
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#include <strings.h>
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#include <strings.h>
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#include <poll.h>
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#include <poll.h>
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#include <ctype.h>
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#include <ctype.h>
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#include "llcomms.h"
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#include "llcomms.h"
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LLCOMMSI::LLCOMMSI(void) {
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LLCOMMSI::LLCOMMSI(void) {
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m_fdw = -1;
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m_fdw = -1;
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m_fdr = -1;
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m_fdr = -1;
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m_total_nread = 0l;
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m_total_nread = 0l;
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m_total_nwrit = 0l;
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m_total_nwrit = 0l;
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}
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}
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void LLCOMMSI::write(char *buf, int len) {
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void LLCOMMSI::write(char *buf, int len) {
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int nw;
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int nw;
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nw = ::write(m_fdw, buf, len);
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nw = ::write(m_fdw, buf, len);
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m_total_nwrit += nw;
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m_total_nwrit += nw;
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assert(nw == len);
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assert(nw == len);
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}
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}
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int LLCOMMSI::read(char *buf, int len) {
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int LLCOMMSI::read(char *buf, int len) {
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int nr;
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int nr;
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nr = ::read(m_fdr, buf, len);
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nr = ::read(m_fdr, buf, len);
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m_total_nread += nr;
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m_total_nread += nr;
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return nr;
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return nr;
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}
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}
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void LLCOMMSI::close(void) {
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void LLCOMMSI::close(void) {
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if(m_fdw>=0)
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if(m_fdw>=0)
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::close(m_fdw);
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::close(m_fdw);
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if((m_fdr>=0)&&(m_fdr != m_fdw))
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if((m_fdr>=0)&&(m_fdr != m_fdw))
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::close(m_fdr);
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::close(m_fdr);
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m_fdw = m_fdr = -1;
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m_fdw = m_fdr = -1;
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}
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}
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bool LLCOMMSI::poll(unsigned ms) {
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bool LLCOMMSI::poll(unsigned ms) {
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struct pollfd fds;
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struct pollfd fds;
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fds.fd = m_fdr;
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fds.fd = m_fdr;
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fds.events = POLLIN;
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fds.events = POLLIN;
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::poll(&fds, 1, ms);
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::poll(&fds, 1, ms);
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if (fds.revents & POLLIN) {
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if (fds.revents & POLLIN) {
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return true;
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return true;
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} else return false;
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} else return false;
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}
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}
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int LLCOMMSI::available(void) {
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int LLCOMMSI::available(void) {
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return poll(0)?1:0;
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return poll(0)?1:0;
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}
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}
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TTYCOMMS::TTYCOMMS(const char *dev) {
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TTYCOMMS::TTYCOMMS(const char *dev) {
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m_fdr = ::open(dev, O_RDWR | O_NONBLOCK);
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m_fdr = ::open(dev, O_RDWR | O_NONBLOCK);
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if (m_fdr < 0) {
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if (m_fdr < 0) {
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printf("\n Error : Could not open %s\n", dev);
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printf("\n Error : Could not open %s\n", dev);
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perror("O/S Err:");
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perror("O/S Err:");
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exit(-1);
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exit(-1);
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}
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}
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if (isatty(m_fdr)) {
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if (isatty(m_fdr)) {
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struct termios tb;
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struct termios tb;
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tcgetattr(m_fdr, &tb);
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tcgetattr(m_fdr, &tb);
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cfmakeraw(&tb);
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cfmakeraw(&tb);
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// tb.c_iflag &= (~(IXON|IXOFF));
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// tb.c_iflag &= (~(IXON|IXOFF));
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tb.c_cflag &= (~(CRTSCTS));
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tb.c_cflag &= (~(CRTSCTS));
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tcsetattr(m_fdr, TCSANOW, &tb);
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tcsetattr(m_fdr, TCSANOW, &tb);
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tcflow(m_fdr, TCOON);
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tcflow(m_fdr, TCOON);
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}
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}
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m_fdw = m_fdr;
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m_fdw = m_fdr;
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}
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}
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NETCOMMS::NETCOMMS(const char *host, const int port) {
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NETCOMMS::NETCOMMS(const char *host, const int port) {
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struct sockaddr_in serv_addr;
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struct sockaddr_in serv_addr;
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struct hostent *hp;
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struct hostent *hp;
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if ((m_fdr = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
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if ((m_fdr = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
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printf("\n Error : Could not create socket \n");
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printf("\n Error : Could not create socket \n");
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exit(-1);
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exit(-1);
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}
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}
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memset(&serv_addr, '0', sizeof(serv_addr));
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memset(&serv_addr, '0', sizeof(serv_addr));
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hp = gethostbyname(host);
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hp = gethostbyname(host);
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if (hp == NULL) {
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if (hp == NULL) {
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printf("Could not get host entity for %s\n", host);
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printf("Could not get host entity for %s\n", host);
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perror("O/S Err:");
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perror("O/S Err:");
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exit(-1);
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exit(-1);
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}
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}
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bcopy(hp->h_addr, &serv_addr.sin_addr.s_addr, hp->h_length);
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bcopy(hp->h_addr, &serv_addr.sin_addr.s_addr, hp->h_length);
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serv_addr.sin_family = AF_INET;
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serv_addr.sin_family = AF_INET;
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serv_addr.sin_port = htons(port);
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serv_addr.sin_port = htons(port);
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if (connect(m_fdr,(struct sockaddr *)&serv_addr, sizeof(serv_addr))< 0){
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if (connect(m_fdr,(struct sockaddr *)&serv_addr, sizeof(serv_addr))< 0){
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perror("Connect Failed Err");
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perror("Connect Failed Err");
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exit(-1);
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exit(-1);
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}
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}
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m_fdw = m_fdr;
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m_fdw = m_fdr;
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}
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}
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