Ejemplo n.º 1
0
s8 get_temperature_3wire(){
	u8 buf[2];

    if(OW_Send(OW_SEND_RESET, (u8 *)"\xcc\x44", 2, 0, 0, OW_NO_READ) == OW_NO_DEVICE)
    	{return 0;}

#if DS18B20_RESOLUTION == DS18B20_9BIT
    delay_for(100);
#endif
#if DS18B20_RESOLUTION == DS18B20_10BIT
    delay_for(200);
#endif
#if DS18B20_RESOLUTION == DS18B20_11BIT
    delay_for(400);
#endif
#if DS18B20_RESOLUTION == DS18B20_12BIT
    delay_for(750);
#endif

    OW_Send(OW_SEND_RESET, (u8 *)"\xcc\xbe\xff\xff", 4, (u8 *)buf, 2, 2);

	buf[0] >>= 4; // убираем дробную часть
	buf[1] <<= 4; // убираем лишние знаки

	return(buf[1] | buf[0]); // объединяем 2 байта -> возврат
}
Ejemplo n.º 2
0
//не отлажено на железе!!!
void get_temperature_2wire(int *hb, int *lb){
	//команда всем сенсорам - измерять
    if(OW_Send(OW_SEND_RESET, (u8 *)"\xcc\x44", 2, 0, 0, OW_NO_READ)==OW_NO_DEVICE)
    	{return;}

	//PIN_ON(LED_GREEN);
    // назначаем функцию двухтактного выхода - подаем "питание" на шину
    OW_out_set_as_Power_pin();

    // выдерживаем время измерения (например 750 мс для 12-битного измерения)
#if DS18B20_RESOLUTION == DS18B20_9BIT
    delay_for(100);
#endif
#if DS18B20_RESOLUTION == DS18B20_10BIT
    delay_for(200);
#endif
#if DS18B20_RESOLUTION == DS18B20_11BIT
    delay_for(400);
#endif
#if DS18B20_RESOLUTION == DS18B20_12BIT
    delay_for(750);
#endif

    // восстанавливаем функцию передатчика UART
    OW_out_set_as_TX_pin();

	u8 buf[2];
    OW_Send(OW_SEND_RESET, (u8 *)"\xcc\xbe\xff\xff", 4, (u8 *)buf, 2, 2);

#if 0
	buf[0] >>= 4; // убираем дробную часть
	buf[1] <<= 4; // убираем лишние знаки

	return(buf[1] | buf[0]); // объединяем 2 байта -> возврат
#endif

	get_temperature_value(buf, *hb, *lb);
}
Ejemplo n.º 3
0
int
main(int argc, char *argv[])
{
	FILE *tfile, *sfile;
	const char *sname = NULL, *tname = NULL;
	double divi = 1, maxdelay = 0;
	int c, diviopt = FALSE, maxdelayopt = FALSE, idx;
	unsigned long line;
	int ch;

	static const struct option longopts[] = {
		{ "timing",	required_argument,	0, 't' },
		{ "typescript",	required_argument,	0, 's' },
		{ "divisor",	required_argument,	0, 'd' },
		{ "maxdelay",	required_argument,	0, 'm' },
		{ "version",	no_argument,		0, 'V' },
		{ "help",	no_argument,		0, 'h' },
		{ NULL,		0, 0, 0 }
	};

	/* Because we use space as a separator, we can't afford to use any
	 * locale which tolerates a space in a number.  In any case, script.c
	 * sets the LC_NUMERIC locale to C, anyway.
	 */
	setlocale(LC_ALL, "");
	setlocale(LC_NUMERIC, "C");

	bindtextdomain(PACKAGE, LOCALEDIR);
	textdomain(PACKAGE);
	atexit(close_stdout);

	while ((ch = getopt_long(argc, argv, "t:s:d:m:Vh", longopts, NULL)) != -1)
		switch(ch) {
		case 't':
			tname = optarg;
			break;
		case 's':
			sname = optarg;
			break;
		case 'd':
			diviopt = TRUE;
			divi = getnum(optarg);
			break;
		case 'm':
			maxdelayopt = TRUE;
			maxdelay = getnum(optarg);
			break;
		case 'V':
			printf(UTIL_LINUX_VERSION);
			exit(EXIT_SUCCESS);
		case 'h':
			usage(stdout);
		default:
			usage(stderr);
			}
	argc -= optind;
	argv += optind;
	idx = 0;

	if ((argc < 1 && !tname) || argc > 3) {
		warnx(_("wrong number of arguments"));
		usage(stderr);
	}
	if (!tname)
		tname = argv[idx++];
	if (!sname)
		sname = idx < argc ? argv[idx++] : "typescript";
	if (!diviopt)
		divi = idx < argc ? getnum(argv[idx]) : 1;
	if (maxdelay < 0)
		maxdelay = 0;
	tfile = fopen(tname, "r");
	if (!tfile)
		err(EXIT_FAILURE, _("cannot open %s"), tname);
	sfile = fopen(sname, "r");
	if (!sfile)
		err(EXIT_FAILURE, _("cannot open %s"), sname);

	/* ignore the first typescript line */
	while((c = fgetc(sfile)) != EOF && c != '\n');

	for(line = 0; ; line++) {
		double delay;
		size_t blk;
		char nl;
		if (fscanf(tfile, "%lf %zu%c\n", &delay, &blk, &nl) != 3 ||
				                                 nl != '\n') {
			if (feof(tfile))
				break;
			if (ferror(tfile))
				err(EXIT_FAILURE,
					_("failed to read timing file %s"), tname);
			errx(EXIT_FAILURE,
				_("timings file %s: %lu: unexpected format"),
				tname, line);
		}
		delay /= divi;

		if (maxdelayopt && delay > maxdelay)
			delay = maxdelay;

		if (delay > SCRIPT_MIN_DELAY)
			delay_for(delay);

		emit(sfile, sname, blk);
	}

	fclose(sfile);
	fclose(tfile);
	printf("\n");
	exit(EXIT_SUCCESS);
}
Ejemplo n.º 4
0
int
main(int argc, char *argv[])
{
	FILE *tfile, *sfile;
	const char *sname, *tname;
	double divi;
	int c;
	unsigned long line;
	size_t oldblk = 0;

	/* Because we use space as a separator, we can't afford to use any
	 * locale which tolerates a space in a number.  In any case, script.c
	 * sets the LC_NUMERIC locale to C, anyway.
	 */
	setlocale(LC_ALL, "");
	setlocale(LC_NUMERIC, "C");

	bindtextdomain(PACKAGE, LOCALEDIR);
	textdomain(PACKAGE);

	if (argc < 2 && argc > 4)
		usage(EXIT_FAILURE);

	tname = argv[1];
	sname = argc > 2 ? argv[2] : "typescript";
	divi = argc == 4 ? getnum(argv[3]) : 1;

	tfile = fopen(tname, "r");
	if (!tfile)
		err(EXIT_FAILURE, _("cannot open timing file %s"), tname);
	sfile = fopen(sname, "r");
	if (!sfile)
		err(EXIT_FAILURE, _("cannot open typescript file %s"), sname);

	/* ignore the first typescript line */
	while((c = fgetc(sfile)) != EOF && c != '\n');

	for(line = 0; ; line++) {
		double delay;
		size_t blk;
		char nl;

		if ((fscanf(tfile, "%lf %zd%[\n]\n", &delay, &blk, &nl) != 3) ||
							(nl != '\n')) {
			if (feof(tfile))
				break;
			if (ferror(tfile))
				err(EXIT_FAILURE,
					_("failed to read timing file %s"), tname);
			errx(EXIT_FAILURE,
				_("timings file %s: %lu: unexpected format"),
				tname, line);
		}
		delay /= divi;

		if (delay > SCRIPT_MIN_DELAY)
			delay_for(delay);

		if (oldblk)
			emit(sfile, sname, oldblk);
		oldblk = blk;
	}

	fclose(sfile);
	fclose(tfile);
	exit(EXIT_SUCCESS);
}