// Generate pulses for speedometer and odometers.
void
gen_pulse_mod::gen_pulse_proc()
{
wait();
speed_pulse = false;
dist_pulse = false;
// Wait until the car is started.
// do { wait(); } while (start == true);
do {
wait();
} while (start == false);
while (true) {
speed_pulse = true;
dist_pulse = true;
AWAIT(find_period(speed));
speed_pulse = false;
dist_pulse = false;
AWAIT(find_period(speed));
}
}
// Compute speed.
void
speed_mod::read_speed_proc()
{
wait();
double speed = 0.0;
while (true) {
// More than one pulse is needed to compute a distance and
// consequently, speed. This function collects NUM_PULSES_FOR_SPEED
// pulses for that purpose.
AWAIT(NUM_PULSES_FOR_SPEED);
speed = DIST_BETWEEN_TWO_PULSES * PERIODS_PER_HOUR / elapsed_time;
// Reset timer.
elapsed_time = 0;
cout << "Current speed displayed = "
<< speed << " km/h @ " << sc_time_stamp() << endl;
cout << "Current speedometer angle = "
<< speed * MAX_ANGLE / MAX_SPEED
<< " degrees @ " << sc_time_stamp() << endl;
}
}
int main(void)
{
mailbox_t *m;
m = AWAIT(mb1 | mb2 | mb4);
if (m == (mailbox_t *)mb3)
__CPROVER_assert(0, "E");
return 0;
}
// Get the pulses for one distance increment.
void
dist_mod::get_dist_proc()
{
wait();
while (true) {
// More than one pulse is needed for a distance increment. This
// function collects NUM_PULSES_FOR_DIST_INCR pulses for that
// purpose.
AWAIT(NUM_PULSES_FOR_DIST_INCR);
if (start)
ok_for_incr = (ok_for_incr ? false : true);
else
ok_for_incr = false;
}
}
// Compute speed.
void
speed_read_mod::read_speed_proc()
{
wait();
while (true) {
// More than one pulse is needed to compute a distance and
// consequently, speed. This function collects NUM_PULSES_FOR_SPEED
// pulses for that purpose.
AWAIT(NUM_PULSES_FOR_SPEED);
if (start)
raw_speed = DIST_BETWEEN_TWO_PULSES * PERIODS_PER_HOUR / elapsed_time;
else
raw_speed = 0.0;
// Reset timer.
elapsed_time = 0;
}
}
