void write_log(const char* data, ...) {
  static FILE* f = NULL;
  if(f == NULL) {
     f = fopen(...

FILE *g_log_fp;
int g_log_file_size;

void LOG_LogMessage(char *file, char *message, int value, int close)
{
	int file_size = 0;
	
	char buff[256] = { '\0' };
	char sval[10];
	
	ItoA(value, sval);
	strcat(buff, message);
	strcat(buff, sval);

	if (g_log_fp == NULL)
	{
		g_log_fp = fopen(file, "a+");
		
		if (g_log_fp != NULL)
			fputs(buff, g_log_fp);
	}
	else
		fputs(buff, g_log_fp);
	
	fseek(g_log_fp, 0, SEEK_SET);
	fseek(g_log_fp, 0, SEEK_END);
	file_size = ftell(g_log_fp); 
			
	if (close)
		fclose(g_log_fp);
	else
		fflush(g_log_fp); 
	
	if (file_size >= MAX_LOG_FILE_SIZE)
	{
		//LOG_Clear() ???
		//go to the next file ???
	}	
}

FILE *g_log_fp;
int g_log_file_size;
char *glob_file_name;

void LOG_LogMessage(char *message, int value, int close)
{
	int file_size = 0;
	
	char buff[256] = { '\0' };
	char sval[10];
	
	ItoA(value, sval);
	strcat(buff, message);
	strcat(buff, sval);

	if (g_log_fp == NULL)
	{
		g_log_fp = fopen(glob_file_name, "a+");
		
		if (g_log_fp != NULL)
			fputs(buff, g_log_fp);
	}
	else
		fputs(buff, g_log_fp);
	
	//fseek(g_log_fp, 0, SEEK_SET);
	fseek(g_log_fp, 0, SEEK_END);
	file_size = ftell(g_log_fp); 
	g_log_file_size += file_size;
			
	if (close)
		fclose(g_log_fp);
	else
		fflush(g_log_fp); 
	
	if (g_log_file_size >= MAX_LOG_FILE_SIZE)
	{
		//LOG_Clear() ???
		//go to the next file ???
	}	
}

void LOG_LogString(char *message, int close)
{
	if (g_log_fp == NULL)
	{
		g_log_fp = fopen(glob_file_name, "a+");
			
		if (g_log_fp != NULL)
		    fputs(message, g_log_fp);
	}
	else
	    fputs(message, g_log_fp);
}

void LOG(char *message, int *value, int close, int log_option)
{
	switch (log_option)
	{
	    case LOG_ON_TERMINAL:
	    	if (value != NULL)
	    		printf(message, *value);
	    	else
	    		printf(message);
	    break;
	    case LOG_ON_FILE:
	    	if (value != NULL)
	    		LOG_LogMessage(message, *value,  close);
	    	else
	    		LOG_LogString(message, close);
	    break;
	    case LOG_ON_ALL:
	    	if (value != NULL)
	    	{
	    		printf(message, *value);
	    		LOG_LogMessage(message, *value,  close);
	    	}
	    	else
	    	{
	    		printf(message);
	    		LOG_LogString(message, close);
	    	}
	    break;
	}

uint32_t LOG_InitTimeStamp(uint32_t day, uint32_t hours, uint32_t minutes, uint32_t seconds)
{
    uint32_t milliseconds = (day*3600*24) + (hours*3600) + (minutes*60) + seconds;
    
    return milliseconds; 
}

void LOG_GetTimeStamp(uint32_t timestamp, LOG_PARAMS *log_par)
{
	log_par->days = timestamp / (3600*24);
	log_par->hours = (timestamp - log_par->days) / 3600;
	log_par->minutes = (timestamp - log_par->days - log_par->hours) / 60;
	log_par->seconds  = timestamp - log_par->days - log_par->hours -  log_par->minutes;
}

void LOG_SetTimeStamp(char *time_str)
{
	char sval[10];
	
	uint32_t ts = get_Current_FPGA_Timer();
	glob_millisec += ts;
	
	LOG_GetTimeStamp(glob_millisec, &log_params);
	
	ItoA(log_params.days, sval);
	strcat(time_str, sval);
	strcat(time_str, ":");
	ItoA(log_params.hours, sval);
	strcat(time_str, sval);
	strcat(time_str, ":");
	ItoA(log_params.minutes, sval);
	strcat(time_str, sval);
	strcat(time_str, ":");
	ItoA(log_params.seconds, sval);
	strcat(time_str, sval);
	strcat(time_str, ":");
}