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#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "mon.h"
/*
Monitor commands :
(empty cmd) Send input & update output
q Quit
a Set automatic mode (send input all the time)
m Set manual mode (send input when user sends empty command)
f <freq> Set frequency mode (every second, do 'freq' steps)
i <id> <v> Set input #id to value v (v is a string, transmitted as-is to simulator)
tf Tick fast (send 1 every cycle)
ts Tick for every second
tz Tick zero all the time
t <id> Set ticker input to #id
t Set no ticker input
s <i1> <i2> <i3> Set parameters for serial I/O
i1 : input for serial input
i2 : output for serial input busy signal
i3 : output for serial output
s Set no serial input
:<text> Send text to serial
d7 x x ... Set outputs to be interpreted as 7-bar digit displayer (up to 8 outputs, use - for no output)
*/
int mon_read_prologue(t_mon *mon) {
int i;
if (fscanf(mon->from_sim, " %d", &mon->n_inputs) == EOF) return -1;
if (fscanf(mon->from_sim, " %d", &mon->n_outputs) == EOF) return -1;
mon->inputs = malloc(mon->n_inputs * sizeof(t_input));
mon->outputs = malloc(mon->n_outputs * sizeof(t_output));
// Read input description
for (i = 0; i < mon->n_inputs; i++) {
mon->inputs[i].value[0] = '0';
mon->inputs[i].value[1] = 0;
if (fscanf(mon->from_sim, " %d", &mon->inputs[i].size) == EOF) return -1;
if (fscanf(mon->from_sim, " %s", mon->inputs[i].name) == EOF) return -1;
}
// Zeroify output description
for (i = 0; i < mon->n_outputs; i++) {
mon->outputs[i].name[0] = 0;
mon->outputs[i].v_bin[0] = 0;
mon->outputs[i].v_int = 0;
}
mon->step = 0;
mon->freq = 1;
mon->max_freq = 1000;
mon->status = MS_RUN;
mon->clk = time(NULL);
mon->ticker_input = -1;
mon->ticker_mode = TM_SECOND;
mon->ser_in_in = -1;
mon->ser_in_busy_out = -1;
mon->ser_out = -1;
mon->ser_buf[0] = 0;
mon->ser_out_buf = 0;
for (i = 0; i < 8; i++) mon->d7[i] = -1;
return 0;
}
void mon_loop(t_mon *mon) {
disp_display(mon);
time_t prev_time = time(NULL);
int steps = 0;
while (mon->status != MS_FINISH) {
handle_kbd(mon);
if (mon->status == MS_AUTO) {
mon_step(mon);
steps++;
if (time(NULL) != prev_time) {
mon->max_freq = steps;
steps = 0;
prev_time = time(NULL);
}
} else if (mon->status == MS_FREQ) {
if (steps < mon->freq) {
mon_step(mon);
steps++;
usleep(1000000 / mon->freq - 1000000 / mon->max_freq);
} else {
if (prev_time != time(NULL)) {
steps = 0;
prev_time = time(NULL);
} else {
usleep(10000);
}
}
} else {
usleep(10000);
}
}
}
void mon_handle_command(t_mon *mon, const char *c) {
if (c[0] == 0) { // empty command : run step
mon_step(mon);
} else if (!strcmp(c, "q")) {
mon->status = MS_FINISH;
} else if (!strcmp(c, "a")) {
mon->status = MS_AUTO;
} else if (!strcmp(c, "m")) {
mon->status = MS_RUN;
} else if (c[0] == 'f') {
const char *p = c + 1;
mon->freq = 0;
while (isspace(*p)) p++;
while (isdigit(*p)) mon->freq = 10 * mon->freq + (*(p++) - '0');
mon->status = MS_FREQ;
} else if (c[0] == 'i') {
const char *p = c + 1;
int a = 0;
while (isspace(*p)) p++;
while (isdigit(*p)) a = a * 10 + (*(p++) - '0');
if (a >= 0 && a < mon->n_inputs) {
strcpy(mon->inputs[a].value, p);
}
} else if (!strcmp(c, "tf")) {
mon->ticker_mode = TM_FAST;
} else if (!strcmp(c, "ts")) {
mon->ticker_mode = TM_SECOND;
} else if (!strcmp(c, "tz")) {
mon->ticker_mode = TM_NO_TICK;
} else if (c[0] == 't') {
if (c[1] == 0) {
mon->ticker_input = -1;
} else {
const char *p = c + 1;
int a = 0;
while (isspace(*p)) p++;
while (isdigit(*p)) a = a * 10 + (*(p++) - '0');
if (a >= 0 && a < mon->n_inputs) {
mon->ticker_input = a;
}
}
} else if (c[0] == 's') {
if (c[1] == 0) {
mon->ser_in_in = mon->ser_in_busy_out = mon->ser_out = -1;
} else {
int u = 0, v = 0, w = 0;
const char *p = c + 1;
while (isspace(*p)) p++;
while (isdigit(*p)) u = u * 10 + (*(p++) - '0');
while (isspace(*p)) p++;
while (isdigit(*p)) v = v * 10 + (*(p++) - '0');
while (isspace(*p)) p++;
while (isdigit(*p)) w = w * 10 + (*(p++) - '0');
if (u >= 0 && u < mon->n_inputs &&
v >= 0 && v < mon->n_outputs &&
w >= 0 && w < mon->n_outputs) {
mon->ser_in_in = u;
mon->ser_in_busy_out = v;
mon->ser_out = w;
}
}
} else if (c[0] == ':') {
strcat(mon->ser_buf, c + 1);
strcat(mon->ser_buf, "\n");
} else if (c[0] == 'd' && c[1] == '7') {
const char *p = c + 2;
int i = 0;
for (i = 0; i < 8; i++) {
while (isspace(*p)) p++;
if (*p == 0) {
mon->d7[i] = -1;
} else if (*p == '-') {
mon->d7[i] = -1;
p++;
} else {
mon->d7[i] = 0;
while (isdigit(*p)) mon->d7[i] = 10 * mon->d7[i] + (*(p++) - '0');
if (mon->d7[i] >= mon->n_outputs) mon->d7[i] = -1;
}
}
}
disp_display(mon);
}
void mon_step(t_mon *mon) {
int i = 0;
// Get ticker
int ticker = 0;
if (mon->ticker_mode == TM_SECOND) {
time_t new_clk = time(NULL);
ticker = new_clk - mon->clk;
mon->clk = new_clk;
} else if (mon->ticker_mode == TM_FAST) {
ticker = 1;
}
if (mon->ticker_input != -1) {
if (mon->inputs[mon->ticker_input].size == 1)
ticker = (ticker != 0 ? 1 : 0);
sprintf(mon->inputs[mon->ticker_input].value, "/%d", ticker);
}
// Update serial input
if (mon->ser_in_in != -1 && mon->ser_in_busy_out != -1
&& mon->outputs[mon->ser_in_busy_out].v_int == 0) {
if (mon->ser_buf[0] != 0) {
sprintf(mon->inputs[mon->ser_in_in].value, "/%d", (int)mon->ser_buf[0]);
char *p = mon->ser_buf;
while (*p) {
p[0] = p[1];
p++;
}
} else {
sprintf(mon->inputs[mon->ser_in_in].value, "0");
}
}
// Send inputs to simulator
for (i = 0; i < mon->n_inputs; i++) {
fprintf(mon->to_sim, "%s\n", mon->inputs[i].value);
}
fflush(mon->to_sim);
// Read outputs from simulator
for (i = 0; i < mon->n_outputs; i++) {
fscanf(mon->from_sim, " %s %s %d",
mon->outputs[i].name,
mon->outputs[i].v_bin,
&mon->outputs[i].v_int);
}
// Update serial output
if (mon->ser_out != -1) {
mon->ser_out_buf = mon->outputs[mon->ser_out].v_int;
}
// Display
mon->step++;
disp_display(mon);
}
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