Send the data to api server using esp 8266 and Arduino 2560 I am trying but data not going to server please update this code

[veeru1187]

#include <SoftwareSerial.h>
SoftwareSerial espSerial(51, 52); // RX, TX for ESP8266

const char* wifiSSID = "green";
const char* wifiPassword = "green@123";
const char* serverURL = "https://www.example.com/webapi/aqmsp_datapush.php.php?locationkey=505&stationkey=1200";

void setup() {
Serial.begin(115200);
espSerial.begin(115200);
connectToWiFi();
}

void loop() {
// Read sensor data or gather information you want to send
int ch1Value = 30;
int ch2Value = 40;
String jsonData = "{"ch1": " + String(ch1Value) + ", "ch2": " + String(ch2Value) + "}";+

// Send data to the API server
bool success = sendDataToServer(jsonData);

if (!success) {
Serial.println("Sending data failed. Retrying...");
resetAndRetry();
}

delay(5000); // Wait for 5 seconds before sending data again
}

void connectToWiFi() {
// Connect to your Wi-Fi network
Serial.println("Connecting to Wi-Fi...");
espSerial.println("AT+CWJAP="" + String(wifiSSID) + "","" + String(wifiPassword) + """);
delay(5000); // Wait for ESP8266 to connect to Wi-Fi

// Check if the Wi-Fi connection was successful
if (espSerial.find("OK")) {
Serial.println("Connected to Wi-Fi!");
} else {
Serial.println("Wi-Fi connection failed. Retrying...");
resetAndRetry();
}
}

bool sendDataToServer(String data) {
// Establish connection to your API server using the domain name
Serial.println("Connecting to server...");
espSerial.println("AT+CIPSTART="TCP","www.example.com",80");
delay(2000); // Wait for connection to be established

// Check if the server connection was successful
if (espSerial.find("OK")) {
Serial.println("Connected to server!");
} else {
Serial.println("Server connection failed. Retrying...");
resetAndRetry();
return false;
}

// Send HTTP POST request to your API server
String request = "POST " + String(serverURL) + " HTTP/1.1\r\n";
request += "Host: www.example.com\r\n";
request += "Content-Type: application/json\r\n";
request += "Content-Length: " + String(data.length()) + "\r\n\r\n";
request += data;

espSerial.print("AT+CIPSEND=");
espSerial.println(request.length());
delay(500); // Wait for module to prepare for data transmission

espSerial.println(request);
delay(2000); // Wait for data to be sent

// Check if the data was sent successfully
if (espSerial.find("SEND OK")) {
Serial.println("Data sent successfully!");
return true;
} else {
Serial.println("Data sending failed. Retrying...");
resetAndRetry();
return false;
}
}

void resetAndRetry() {
// Reset ESP8266 and retry the connection
espSerial.println("AT+RST");
delay(5000); // Wait for ESP8266 to restart

connectToWiFi(); // Attempt to connect to Wi-Fi and server again
}

[Juraj]

I recommend you my WiFiEspAT library if you can update the esp8266 AT firmware to 1.7.5 (SDK 3.0.5). then you can use the standard Arduino WiFi API and not struggle with handling the AT commands

btw: why do you use SoftwareSerial on Mega where you have 3 additional hardware Serial?

[veeru1187]

Thanks sir for your reply
I will try sir
Softwareserial already use other configurations please help me continue
Thanks for your support

[veeru1187]

dear sir if i will add WiFiEspAT library. any requirements for changing the previous code. if requirements changing the code than what will be change

[Juraj]

https://github.com/JAndrassy/WiFiEspAT#getting-started