Exemplo n.º 1
0
int
main(void)
{
	Temper *t;
	char buf[256];
	int i, ret;

	usb_set_debug(0);
	usb_init();
	usb_find_busses();
	usb_find_devices();

	t = TemperCreateFromDeviceNumber(0, USB_TIMEOUT, 0);
	if(!t) {
		perror("TemperCreate");
		exit(-1);
	}

	bzero(buf, 256);
	ret = TemperGetOtherStuff(t, buf, 256);
	if(t->debug) {
	  printf("Other Stuff (%d bytes):\n", ret);
	  for(i = 0; i < ret; i++) {
	    printf(" %02x", buf[i]);
	    if(i % 16 == 15) {
	      printf("\n");
	    }
	  }
	  printf("\n");
	}

	double tempc;
	double rh;

	if(TemperGetTempAndRelHum(t, &tempc, &rh) < 0) {
	  perror("TemperGetTemperatureAndRelHum");
	  exit(1);
	}
	/* printf("Temperature: %.2f°F, %.2f°C\tRelative humidity: %.2f%%\n", (9.0 / 5.0 * tempc + 32.0), tempc, rh); */
	double dew, tn, m;
	if (tempc > 0)
	{
		tn = 243.12;
		m = 17.62;
	}
	else
	{
		tn = 272.62;
		m = 22.46;
	}
	dew = tn * (log(rh/100)+(m*tempc/(tn+tempc))) / (m - log(rh/100) - (m*tempc/(tn+tempc)));

	printf("%.2f %.2f %.2f\n", tempc, rh, dew);

	return 0;
}
Exemplo n.º 2
0
void initialize(void){
	int i, ret;

	usb_set_debug(0);
	usb_init();
	usb_find_busses();
	usb_find_devices();

	t = TemperCreateFromDeviceNumber(0, USB_TIMEOUT, 0);
	if(!t) {
		perror("TemperCreate");
		exit(-1);
	}



}
Exemplo n.º 3
0
int
main(void)
{
	Temper *t;
	char buf[256];
	int i, ret;

	usb_set_debug(0);
	usb_init();
	usb_find_busses();
	usb_find_devices();

	t = TemperCreateFromDeviceNumber(0, USB_TIMEOUT, 0);
	if(!t) {
		perror("TemperCreate");
		exit(-1);
	}

/*
	TemperSendCommand(t, 10, 11, 12, 13, 0, 0, 2, 0);
	TemperSendCommand(t, 0x43, 0, 0, 0, 0, 0, 0, 0);
	TemperSendCommand(t, 0, 0, 0, 0, 0, 0, 0, 0);
	TemperSendCommand(t, 0, 0, 0, 0, 0, 0, 0, 0);
	TemperSendCommand(t, 0, 0, 0, 0, 0, 0, 0, 0);
	TemperSendCommand(t, 0, 0, 0, 0, 0, 0, 0, 0);
	TemperSendCommand(t, 0, 0, 0, 0, 0, 0, 0, 0);
	TemperSendCommand(t, 0, 0, 0, 0, 0, 0, 0, 0);
*/


		float tempc;

		if(TemperGetTemperatureInC(t, &tempc) < 0) {
			perror("TemperGetTemperatureInC");
			exit(1);
		}
		printf("temperature %.2fF %.2fC\n", (9.0 / 5.0 * tempc + 32.0),
		       tempc);
	return 0;
}