manta/test/virtual_uart/tb_manta.cpp

79 lines
1.6 KiB
C++

#include <stdlib.h>
#include <iostream>
#include <string>
#include <verilated.h>
#include <verilated_vcd_c.h>
#include "Vmanta.h"
vluint64_t sim_time = 0;
int main(int argc, char** argv, char** env) {
Vmanta *dut = new Vmanta;
Verilated::traceEverOn(true);
VerilatedVcdC *m_trace = new VerilatedVcdC;
dut->trace(m_trace, 5);
m_trace->open("waveform.vcd");
while(true) {
// get line from stdin
std::string line;
std::getline(std::cin, line);
for (int i=0; i < line.length(); i++) {
// advance simulation
dut->clk ^= 1;
dut->mem_clk ^= 1;
dut->eval();
m_trace->dump(sim_time);
sim_time++;
// feed it to the serial port
dut->urx_brx_axiv = 1;
dut->urx_brx_axid = line[i];
if (line[i] == 'C')
dut->urx_brx_axid = '\r';
if (line[i] == 'L')
dut->urx_brx_axid = '\n';
// advance simulation
dut->clk ^= 1;
dut->mem_clk ^= 1;
dut->eval();
m_trace->dump(sim_time);
sim_time++;
}
for (int i=0; i < 30; i++) {
// advance simulation
dut->clk ^= 1;
dut->mem_clk ^= 1;
dut->eval();
m_trace->dump(sim_time);
sim_time++;
// print whatever's on the port
if(dut->btx_utx_start)
std::cout << dut->btx_utx_data;
// advance simulation
dut->clk ^= 1;
dut->mem_clk ^= 1;
dut->eval();
m_trace->dump(sim_time);
sim_time++;
}
}
m_trace->close();
delete dut;
exit(EXIT_SUCCESS);
}