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;
}
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);
}
}
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;
}