bms/Application/app/event_record.c

#include <stdbool.h>
#include <string.h>
#include "event_record.h"
#include "libs/shark_task.h"

#define MAX_EVENT_SIZE 120
static event_record_t _event[MAX_EVENT_SIZE];
static int event_w_idx = 0;
static bool _event_full = false;

void push_event(event_id_t id, s32 data) {
	event_record_t *pevent = &_event[event_w_idx];
	event_w_idx = (event_w_idx + 1) % MAX_EVENT_SIZE;
	if (event_w_idx == 0) {
		_event_full = true;
	}
	pevent->id = id;
	pevent->timestamp = shark_get_seconds();
	pevent->data = data;
}

static int _event_size(void) {
	if (_event_full) {
		return MAX_EVENT_SIZE;
	}
	return event_w_idx;
}

int get_event(int num, int offset, u8 *recoder) {
	if (offset >= _event_size()) {
		return 0;
	}
	num = MIN(num, _event_size()-offset);
	int rtn = 0;

	if (_event_full) {
		offset += event_w_idx;
	}

	while(num > 0) {
		memcpy(recoder, _event + offset % MAX_EVENT_SIZE, sizeof(event_record_t));
		num --;
		offset ++;
		recoder += sizeof(event_record_t);
		rtn ++;
	}
	return rtn;
}