ThingSpeak not showing any data from my ESP32!
9 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
It seems like the site isn't receiving any data. The graphics are empty!
Could you please help me? Here's the source code!
Thanks so much!
#ifdef __cplusplus
extern "C" {
#endif
uint8_t temprature_sens_read();
#ifdef __cplusplus
}
#endif
uint8_t temprature_sens_read();
#include <WiFi.h>
String apiKey = "BE7U15RJYY57AV91"; // Enter your Write API key from ThingSpeak
const char *ssid = "Ashish"; // replace with your wifi ssid and wpa2 key
const char *pass = "12345678";
const char* server = "api.thingspeak.com";
WiFiClient client;
void setup()
{
Serial.begin(115200);
delay(10);
Serial.println("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
}
void loop()
{
int h = 0;
float t =0;
h = hallRead();
t = ((temprature_sens_read()-32)/1.8); //changing temperature parameter to celsius
if (client.connect(server,80)) // "184.106.153.149" or api.thingspeak.com
{
String postStr = apiKey;
postStr +="&field1=";
postStr += String(h);
postStr += "&field2=";
postStr += String(t);
postStr += "\r\n\r\n";
client.print("POST /update HTTP/1.1\n");
client.print("Host: api.thingspeak.com\n");
client.print("Connection: close\n");
client.print("X-THINGSPEAKAPIKEY: "+apiKey+"\n");
client.print("Content-Type: application/x-www-form-urlencoded\n");
client.print("Content-Length: ");
client.print(postStr.length());
client.print("\n\n");
client.print(postStr);
Serial.print("Hall: ");
Serial.println(h);
Serial.print("Temperature:");
Serial.print(t);
Serial.println(" C");
Serial.println("%. Send to Thingspeak.");
}
client.stop();
Serial.println("Waiting...");
delay(10000);
}
0 Commenti
Risposte (1)
Community
Più risposte nel ThingSpeak Community
Vedere anche
Categorie
Scopri di più su REST API in Help Center e File Exchange
Prodotti
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!