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tdc state machine

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This commit is contained in:
Nam Tran
2020-10-26 16:06:00 -05:00
parent 74dd3fb1d8
commit 4886fad4b2
3 changed files with 163 additions and 42 deletions
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83
tdc/sim/top.cc
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@@ -5,43 +5,66 @@
#include "Vtop.h"
void tick(int tickcount, Vtop *tb, VerilatedVcdC* tfp) {
tb->eval();
if (tfp)
tfp->dump(tickcount * 10 - 2);
tb->i_clk = 1;
tb->eval();
if (tfp)
tfp->dump(tickcount * 10);
tb->i_clk = 0;
tb->eval();
if (tfp) {
tfp->dump(tickcount * 10 + 5);
tfp->flush();
}
tb->eval();
if (tfp)
tfp->dump(tickcount * 10 - 2);
tb->i_clk = 1;
tb->eval();
if (tfp)
tfp->dump(tickcount * 10);
tb->i_clk = 0;
tb->eval();
if (tfp) {
tfp->dump(tickcount * 10 + 5);
tfp->flush();
}
}
int main(int argc, char **argv) {
// Call commandArgs first!
Verilated::commandArgs(argc, argv);
// Call commandArgs first!
Verilated::commandArgs(argc, argv);
// Instantiate our design
Vtop *tb = new Vtop;
Verilated::traceEverOn(true);
VerilatedVcdC* tfp = new VerilatedVcdC;
// Instantiate our design
Vtop *tb = new Vtop;
Verilated::traceEverOn(true);
VerilatedVcdC* tfp = new VerilatedVcdC;
tb->trace(tfp, 00);
tfp->open("build/waveform.vcd");
tb->trace(tfp, 00);
tfp->open("build/waveform.vcd");
unsigned tickcount = 0;
int last_led = tb->o_led;
tb->i_resetN = 1;
tb->i_start = 0;
tb->i_stop = 0;
unsigned tickcount = 0;
int last_led = tb->o_led;
for (int k = 0; k < 2; k++)
tick(++tickcount, tb, tfp);
for(int k=0; k<(1 << 12); k++) {
tick(++tickcount, tb, tfp);
tb->i_resetN = 0;
tick(++tickcount, tb, tfp);
tb->i_resetN = 1;
if (last_led != tb->o_led) {
printf("k = %7d, led = %d\n", k, tb->o_led);
}
for (int k = 0; k < 3; k++)
tick(++tickcount, tb, tfp);
last_led = tb->o_led;
}
tb->i_start = 1;
tick(++tickcount, tb, tfp);
tb->i_start = 0;
for (int k = 0; k < 15; k++)
tick(++tickcount, tb, tfp);
tb->i_stop = 1;
tick(++tickcount, tb, tfp);
tb->i_stop = 0;
for (int k = 0; k < 3; k++)
tick(++tickcount, tb, tfp);
tb->i_resetN = 0;
tick(++tickcount, tb, tfp);
tb->i_resetN = 1;
for (int k = 0; k < 3; k++)
tick(++tickcount, tb, tfp);
}