int main(int argc, char **argv) {
if (argc > 1)
pcsensor_debug(1);
int passes = 0;
float tempc = 0.0000;
do {
usb_dev_handle* lvr_winusb = pcsensor_open();
if (!lvr_winusb) {
/* Open fails sometime, sleep and try again */
sleep(3);
}
else {
tempc = pcsensor_get_temperature(lvr_winusb);
pcsensor_close(lvr_winusb);
}
++passes;
/* Read fails silently with a 0.0 return, so repeat until not zero
or until we have read the same zero value 3 times (just in case
temp is really dead on zero */
} while ((tempc > -0.0001 && tempc < 0.0001) || passes >= 4);
if (!((tempc > -0.0001 && tempc < 0.0001) || passes >= 4)) {
/* Apply calibrations */
tempc = (tempc * scale) + offset;
struct tm *utc;
time_t t;
t = time(NULL);
utc = gmtime(&t);
char dt[80];
strftime(dt, 80, "%Y-%m-%d %H:%M:%S", utc); // YYYY-mm-dd HH:MM:SS
//strftime(dt, 80, "%d-%b-%Y %H:%M", utc); // dd-mmm-YYYY HH:MM
printf("%s,%f\n", dt, tempc);
fflush(stdout);
return 0;
}
else {
return 1;
}
}
/**
* Read the temperature in Celcius from the provided device number 0 indexed
* @param int device_id
* @return float
*/
float read_temperature_c(int device_id) {
pcsensor_devices *available_devices = setup_libusb_access();
float tempc = 0;
if (available_devices->sensor_count == 0) {
return FLT_MIN;
}
if ((device_id - 1) > available_devices->sensor_count) {
return FLT_MIN;
}
if (available_devices->sensors[device_id] == NULL)
{
return FLT_MIN;
}
usb_dev_handle *device_handle = pcsensor_open(available_devices->sensors[device_id]);
pcsensor_get_temperature(device_handle, &tempc);
pcsensor_close(device_handle);
return tempc;
}
int main(){
float tempc = 0.0000;
char c;
usb_dev_handle* lvr_winusb = pcsensor_open();
if (!lvr_winusb) {
/* Open fails sometime */
printf("open failed\n");
fflush(stdout);
return 1;
}
while (1) {
/*printf("press enter to get temp\n");*/
fflush(stdout);
while((c = getchar()) != '\n' && c != EOF){}
tempc = pcsensor_get_temperature(lvr_winusb);
if (!(tempc > -0.0001 && tempc < 0.0001)) {
/* Apply calibrations */
tempc = (tempc * scale) + offset;
printf("%f\n", tempc);
fflush(stdout);
}
else {
printf("Temperature is zero, probably error\n");
fflush(stdout);
}
}
pcsensor_close(lvr_winusb);
return 0;
}
int main(){
// check for presence of env vars
if (!getenv(ENV_URL)) {
printf("Necessary environment vars not found, please set %s !\n", ENV_URL);
return -1;
}
char* url;
url = getenv(ENV_URL);
int passes = 0;
float tempc = 0.0000;
do {
usb_dev_handle* lvr_winusb = pcsensor_open();
if (!lvr_winusb) {
/* Open fails sometime, sleep and try again */
sleep(3);
} else {
tempc = pcsensor_get_temperature(lvr_winusb);
pcsensor_close(lvr_winusb);
}
++passes;
}
/* Read fails silently with a 0.0 return, so repeat until not zero
or until we have read the same zero value 3 times (just in case
temp is really dead on zero */
while ((tempc > -0.0001 && tempc < 0.0001) || passes >= 4);
if (!((tempc > -0.0001 && tempc < 0.0001) || passes >= 4)) {
/* Apply calibrations */
tempc = (tempc * scale) + offset;
struct tm *utc;
time_t t;
t = time(NULL);
utc = localtime(&t);
char dt[80];
strftime(dt, 80, "%Y-%m-%dT%H:%M:%S%z", utc);
char json[200];
sprintf(json, "{\"collection\":\"%s\",\"timestamp\":\"%s\",\"data\":{\"temp\":%.1f}}", COLLECTION, dt, tempc);
printf("%s ", json);
// init curl
CURL *curl;
CURLcode res;
curl_global_init(CURL_GLOBAL_DEFAULT);
curl = curl_easy_init();
if(curl) {
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, "Accept: application/json");
headers = curl_slist_append(headers, "Content-Type: application/json");
headers = curl_slist_append(headers, "charsets: utf-8");
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, json);
res = curl_easy_perform(curl);
/* Check for errors */
if (res != CURLE_OK) {
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(res));
}
/* always cleanup */
curl_easy_cleanup(curl);
}
curl_global_cleanup();
printf("\n");
return 0;
} else {
return 1;
}
}
