93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
/*
|
|
* data_recorder.c
|
|
*
|
|
* Record simulator data to a file in real-time.
|
|
*
|
|
*/
|
|
|
|
#include "simulator.h"
|
|
#include "data_recorder.h"
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
|
|
static FILE *file;
|
|
|
|
#define MAX_PINS 100
|
|
static int32_t values[MAX_PINS]; ///< Pin and value states
|
|
static int pin_count; ///< Number of pins we emit
|
|
static void emit_log_data(void);
|
|
|
|
static void recorder_close(int code, void*x ) {
|
|
if (!file) return;
|
|
// force last line to emit
|
|
emit_log_data();
|
|
fflush(file);
|
|
fclose(file);
|
|
file = NULL;
|
|
}
|
|
|
|
void recorder_init(const char* filename) {
|
|
sim_assert( ! file, "Recorder already initialized");
|
|
|
|
file = fopen(filename, "w");
|
|
sim_assert(file, "record_init: failed to create file");
|
|
|
|
time_t t = time(NULL);
|
|
fprintf(file, "# Teacup_Firmware simulator v1.0\n");
|
|
fprintf(file, "# Recorded %s\n", asctime(localtime(&t)));
|
|
fprintf(file, "#\n# Tips:\n");
|
|
fprintf(file, "# * Plot the actual points traveled with gnuplot\n");
|
|
fprintf(file, "# gnuplot --persist -e \"set pointsize 0.01; plot '%s' u 2:3:1 with points\"\n", filename);
|
|
fprintf(file, "#\n");
|
|
|
|
fflush(file);
|
|
on_exit(recorder_close, NULL);
|
|
}
|
|
|
|
void add_trace_var(const char* name, int pin) {
|
|
sim_assert(pin < MAX_PINS, "pin number invalid");
|
|
|
|
if (file) {
|
|
fprintf(file, "# %d - %s\n", pin+1, name);
|
|
fflush(file);
|
|
}
|
|
|
|
if (pin >= pin_count)
|
|
pin_count = pin + 1;
|
|
}
|
|
|
|
static uint64_t prev_t;
|
|
static void emit_log_data(void) {
|
|
if (!file) return;
|
|
// Naive format: each line contains all values, beginning with the time
|
|
fprintf(file, "%lu", prev_t/1000); // microseconds
|
|
for (int i = 0; i < pin_count; i++)
|
|
fprintf(file, " %u", values[i]);
|
|
fprintf(file, "\n");
|
|
fflush(file);
|
|
}
|
|
|
|
// Record a value signal change
|
|
void record_pin(int pin, int32_t state, uint64_t t) {
|
|
if (state == values[pin] && t == prev_t ) return;
|
|
|
|
sim_assert(pin < MAX_PINS, "pin number invalid");
|
|
|
|
emit_log_data();
|
|
prev_t = t;
|
|
values[pin] = state;
|
|
}
|
|
|
|
void record_comment(const char * msg) {
|
|
if (!file) return;
|
|
fprintf(file, "# %s\n", msg);
|
|
fflush(file);
|
|
}
|
|
|
|
void record_raw(const char * msg) {
|
|
if (!file) return;
|
|
fprintf(file, "%s", msg);
|
|
fflush(file);
|
|
}
|