#include <stdio.h>
#include <string.h>
#include <ESP32WiFi.h> // Assuming ESP32 platform
#include <HTTPClient.h>
const char* WIFI_SSID = "your_wifi_ssid";
const char* WIFI_PASSWORD = "your_wifi_password";
const char* TS_API_ENDPOINT = "https://api.thingspeak.com/update";
const char* WRITE_API_KEY = "your_thingspeak_write_api_key";
int inventory_level = 100;
int temperature = 25;
void connectToWiFi() {
 Serial.println("Connecting to WiFi...");
 WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
 while (WiFi.status() != WL_CONNECTED) {
 delay(1000);
 Serial.println("Connecting to WiFi...");
 }
 Serial.println("Connected to WiFi");
}
void sendDataToThingSpeak() {
 HTTPClient http;

 String payload = "api_key=" + String(WRITE_API_KEY) + "&field1=" +
String(inventory_level) + "&field2=" + String(temperature);
 Serial.print("Sending data to ThingSpeak... ");
 http.begin(TS_API_ENDPOINT);
 http.addHeader("Content-Type", "application/x-www-form-urlencoded");
 int httpResponseCode = http.POST(payload);

 if(httpResponseCode > 0) {
 Serial.print("HTTP Response code: ");
 Serial.println(httpResponseCode);
 } else {
 Serial.print("Error code: ");
 Serial.println(httpResponseCode); }