Extract Data via http

Projects Programming
1

Dear users,

I am new in this board and also new on coding using arduino.

I have a problem with reading out some data via http.

#include <WiFi.h>
#include <Arduino.h>
#include <WiFiClient.h>
#include <ESPmDNS.h>
#include <stdio.h>
#include <string.h>
#include <HTTPClient.h>

#define USE_SERIAL Serial

const char* ssid     = "SSID";
const char* password = "WLAN-PW";

const char* ip_readout = "data.sparkfun.com";


void setup()
{
    Serial.begin(115200);
    delay(10);
    //my_sensor.begin();  
    // We start by connecting to a WiFi network

    Serial.println();
    Serial.println();
    Serial.print("Connecting to ");
    Serial.println(ssid);

    WiFi.begin(ssid, password);

    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }

    Serial.println("");
    Serial.println("WiFi connected");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());
       

    
    

}
int value = 0;

void loop()
{

    char* pos;
    char* httpcode[1024];

    char delimiter[] = "/n";
    char *ptr;

    char array[32];
   
    
    if (WiFi.status() != WL_CONNECTED) ESP.restart();


    HTTPClient http;
    USE_SERIAL.print("[HTTP] begin...\n");
    http.begin("http://192.168.10.85/files/esp32_readout.html");
    USE_SERIAL.print("[HTTP] GET...\n");

    int httpCode = http.GET();

        if(httpCode > 0) {
            // HTTP header has been send and Server response header has been handled
            USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

            // file found at server
            if(httpCode == HTTP_CODE_OK) {
                String payload = http.getString();

                payload.toCharArray(array, sizeof(array));
                USE_SERIAL.print("Begin:");
                //USE_SERIAL.println(array);  

                       
                USE_SERIAL.print("Testausgabe\n");
                USE_SERIAL.print(payload);
                USE_SERIAL.print("Testausgabe\n");
            }



        http.end();
            }

  delay(2000);  //allow the cpu to switch to other tasks

}

The output of the serial monitor gives:

17:23:52.267 -> [HTTP] begin...
17:23:52.267 -> [HTTP] GET...
17:23:52.267 -> [HTTP] GET... code: 200
17:23:52.267 -> Begin:Testausgabe
17:23:52.267 -> <!doctype html>
17:23:52.267 -> <html>
17:23:52.267 -> <body>
17:23:52.267 -> <p>HKV EG 01 0</p>
17:23:52.267 -> <p>HKV EG 02 0</p>
17:23:52.267 -> <p>HKV EG 03 0</p>
17:23:52.267 -> <p>HKV EG 04 0</p>
17:23:52.267 -> <p>HKV EG 05 0</p>
17:23:52.267 -> <p>HKV EG 06 0</p>
17:23:52.267 -> <p>HKV OG 01 0</p>
17:23:52.267 -> <p>HKV OG 02 0</p>
17:23:52.267 -> <p>HKV OG 03 0</p>
17:23:52.267 -> <p>HKV OG 04 0</p>
17:23:52.267 -> <p>HKV OG 05 0</p>
17:23:52.267 -> <p>HKV OG 06 0</p>
17:23:52.313 -> <p>HKV OG 07 0</p>
17:23:52.313 -> <p>HKV OG 08 0</p>
17:23:52.313 -> <p>HKV UG 01 0</p>
17:23:52.313 -> <p>HKV UG 02 0</p>
17:23:52.313 -> <p>HKV UG 03 0</p>
17:23:52.313 -> <p>HKV UG 04 0</p>
17:23:52.313 -> <p>HKV UG 05 0</p>
17:23:52.313 -> </body>
17:23:52.313 -> </html>
17:23:52.313 -> Testausgabe

Now i would like to cut oout the state of the different lines. The last 0 says if the relay is closed or opened. Can anyone give me an example how to cut this out?

Thank you very much for your help!

Greetings

Peter

2

@peter_1999 Installation and Troubleshooting is for Problems with the Arduino IDE itself NOT your project. It says so in the description of the section.

Therefore I have moved your post here. Please be more careful where you post in future.

You may want to read this before you proceed:-
how to get the best out of this forum

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