////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// Filename: helloworld.cpp
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// Filename: helloworld.cpp
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//
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//
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// Project: wbuart32, a full featured UART with simulator
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// Project: wbuart32, a full featured UART with simulator
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//
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//
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// Purpose: To demonstrate a useful Verilog file which could be used as a
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// Purpose: To demonstrate a useful Verilog file which could be used as a
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// toplevel program later, to demo the transmit UART.
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// toplevel program later, to demo the transmit UART.
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//
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//
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// Creator: Dan Gisselquist, Ph.D.
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Technology, LLC
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// Gisselquist Technology, LLC
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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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// Copyright (C) 2015-2016, Gisselquist Technology, LLC
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// Copyright (C) 2015-2019, Gisselquist Technology, LLC
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//
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//
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// This program is free software (firmware): you can redistribute it and/or
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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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// 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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// 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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// your option) any later version.
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//
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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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// 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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// 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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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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// for more details.
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//
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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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// 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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// 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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// 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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// <http://www.gnu.org/licenses/> for a copy.
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//
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//
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// License: GPL, v3, as defined and found on www.gnu.org,
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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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// 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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//
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//
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//
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#include <verilatedos.h>
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#include <verilatedos.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <string.h>
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#include <string.h>
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#include <time.h>
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#include <time.h>
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#include <sys/types.h>
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#include <sys/types.h>
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#include <signal.h>
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#include <signal.h>
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#include "verilated.h"
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#include "verilated.h"
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#include "verilated_vcd_c.h"
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#include "verilated_vcd_c.h"
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#include "Vhelloworld.h"
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#include "Vhelloworld.h"
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#include "uartsim.h"
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#include "uartsim.h"
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int main(int argc, char **argv) {
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int main(int argc, char **argv) {
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Verilated::commandArgs(argc, argv);
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Verilated::commandArgs(argc, argv);
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Vhelloworld tb;
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Vhelloworld tb;
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UARTSIM *uart;
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UARTSIM *uart;
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int port = 0;
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int port = 0;
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unsigned setup = 868, clocks = 0, baudclocks;
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unsigned setup = 868, clocks = 0, baudclocks;
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tb.i_setup = setup;
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tb.i_setup = setup;
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uart = new UARTSIM(port);
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uart = new UARTSIM(port);
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uart->setup(tb.i_setup);
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uart->setup(tb.i_setup);
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baudclocks = tb.i_setup & 0xfffffff;
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baudclocks = tb.i_setup & 0xfffffff;
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#define VCDTRACE
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#define VCDTRACE
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#ifdef VCDTRACE
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#ifdef VCDTRACE
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Verilated::traceEverOn(true);
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Verilated::traceEverOn(true);
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VerilatedVcdC* tfp = new VerilatedVcdC;
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VerilatedVcdC* tfp = new VerilatedVcdC;
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tb.trace(tfp, 99);
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tb.trace(tfp, 99);
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tfp->open("helloworld.vcd");
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tfp->open("helloworld.vcd");
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#define TRACE_POSEDGE tfp->dump(10*clocks)
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#define TRACE_POSEDGE tfp->dump(10*clocks)
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#define TRACE_NEGEDGE tfp->dump(10*clocks+5)
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#define TRACE_NEGEDGE tfp->dump(10*clocks+5)
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#define TRACE_CLOSE tfp->close()
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#define TRACE_CLOSE tfp->close()
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#else
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#else
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#define TRACE_POSEDGE
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#define TRACE_POSEDGE
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#define TRACE_NEGEDGE
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#define TRACE_NEGEDGE
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#define TRACE_CLOSE
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#define TRACE_CLOSE
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#endif
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#endif
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clocks = 0;
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clocks = 0;
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while(clocks < 16*32*baudclocks) {
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while(clocks < 16*32*baudclocks) {
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tb.i_clk = 1;
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tb.i_clk = 1;
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tb.eval();
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tb.eval();
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TRACE_POSEDGE;
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TRACE_POSEDGE;
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tb.i_clk = 0;
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tb.i_clk = 0;
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tb.eval();
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tb.eval();
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TRACE_NEGEDGE;
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TRACE_NEGEDGE;
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(*uart)(tb.o_uart_tx);
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(*uart)(tb.o_uart_tx);
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clocks++;
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clocks++;
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}
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}
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TRACE_CLOSE;
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TRACE_CLOSE;
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printf("\n\nSimulation complete\n");
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printf("\n\nSimulation complete\n");
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}
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}
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