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//
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// Filename: ttybus.cpp
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// Filename: ttybus.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, to command the WISHBONE on that same
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// with a UART on an FPGA, to command the WISHBONE on that same
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// FPGA to ... whatever we wish to command it to do.
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// FPGA to ... whatever we wish to command it to do.
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//
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//
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// This code does not run on an FPGA, is not a test bench, neither
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// This code does not run on an FPGA, is not a test bench, neither
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// is it a simulator. It is a portion of a command program
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// is it a simulator. It is a portion of a command program
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// for commanding an FPGA.
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// for commanding an FPGA.
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//
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//
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// Creator: Dan Gisselquist
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Tecnology, LLC
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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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//
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// Copyright: 2015
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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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while(nw < len) {
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while(nw < len) {
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int ln = len-nw;
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int ln = len-nw;
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if ((unsigned)ln > MAXWRLEN)
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if ((unsigned)ln > MAXWRLEN)
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ln = MAXWRLEN;
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ln = MAXWRLEN;
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DBGPRINTF("WRITEV-SUB(%08x%s,#%d,&buf[%d])\n", a+nw, (p)?"++":"", ln, nw);
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for(int i=0; i<ln; i++) {
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for(int i=0; i<ln; i++) {
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BUSW val = buf[nw+i];
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BUSW val = buf[nw+i];
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int caddr = 0;
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int caddr = 0;
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// Let's try compression
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// Let's try compression
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// message.
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// message.
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readidle();
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readidle();
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}
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}
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void TTYBUS::writez(const BUSW a, const int len, const BUSW *buf) {
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void TTYBUS::writez(const BUSW a, const int len, const BUSW *buf) {
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/*
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int ln = len;
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const TTYBUS::BUSW *bptr = buf;
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TTYBUS::BUSW addr = a;
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while((unsigned)ln > MAXWRLEN) {
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writev(addr, 0, MAXWRLEN, bptr);
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bptr += MAXWRLEN;
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ln -= MAXWRLEN;
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// addr += MAXWRLEN;
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} if ((unsigned)ln > 0)
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writev(addr, 0, ln, bptr);
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*/
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writev(a, 0, len, buf);
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writev(a, 0, len, buf);
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}
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}
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void TTYBUS::writei(const BUSW a, const int len, const BUSW *buf) {
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void TTYBUS::writei(const BUSW a, const int len, const BUSW *buf) {
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/*
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int ln = len;
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const TTYBUS::BUSW *bptr = buf;
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TTYBUS::BUSW addr = a;
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while((unsigned)ln > MAXWRLEN) {
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writev(addr, 1, MAXWRLEN, bptr);
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bptr += MAXWRLEN;
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ln -= MAXWRLEN;
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addr += MAXWRLEN;
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} if ((unsigned)ln > 0)
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writev(addr, 1, ln, bptr);
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*/
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writev(a, 1, len, buf);
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writev(a, 1, len, buf);
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}
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}
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TTYBUS::BUSW TTYBUS::readio(const TTYBUS::BUSW a) {
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TTYBUS::BUSW TTYBUS::readio(const TTYBUS::BUSW a) {
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BUSW v;
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BUSW v;
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do {
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do {
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// Blocking read (for now)
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// Blocking read (for now)
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do {
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do {
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nr = lclreadcode(&m_buf[0], 1);
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nr = lclreadcode(&m_buf[0], 1);
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} while (nr < 1);
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} while (nr < 1);
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DBGPRINTF("READWORD: -- lclreadcode, nr = %d, m_buf[0] = %c\n", m_buf[0]);
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DBGPRINTF("READWORD: -- lclreadcode, nr = %d, m_buf[0] = %c\n", nr, m_buf[0]);
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sixbits = chardec(m_buf[0]);
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sixbits = chardec(m_buf[0]);
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if (sixbits&(~0x03f)) {
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if (sixbits&(~0x03f)) {
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// Ignore new lines, unprintables, and characters
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// Ignore new lines, unprintables, and characters
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