Need help on my subscriber view code

meansmydog · March 7, 2025, 4:26am

// Library Imports
#include <WiFiClientSecure.h>
#include <ArduinoJson.h> 
#include <Wire.h>  
#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#include <HTTPClient.h>
#include <string>
// File imports
#include "secrets.h"
#include "FontSubs.h"

// Uncomment according to your hardware type
#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
//#define HARDWARE_TYPE MD_MAX72XX::GENERIC_HW

#define MAX_DEVICES 4
#define CS_PIN 5

MD_Parola Display = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);


WiFiClientSecure client;

unsigned long api_mtbs = 10000; // Change length of time before the next API call (Default: 10,000 -> 10 sec)
unsigned long api_lasttime;
long subs = 0;
long views = 0;

String apiUrl = "";
StaticJsonDocument<1000> doc;

bool showSubs = false;

void setup() {
  // Start Console
  Serial.begin(9600);

  // Setup screen,
  Display.begin();
  Display.setIntensity(0);
  Display.setFont(fontSubs);
  Display.setTextAlignment(PA_CENTER);

  // Connect to wifi
  Serial.print("Connecting to Wifi...");
  WiFi.begin(SECRET_SSID, SECRET_PASS);
  Display.print(" WiFi...");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print("."); 
    delay(500);
  }
  Serial.println("");
  Serial.println(WiFi.localIP());
  Display.print("Connected");
  delay(2000);

  // Start process of getting data
  Display.displayClear();
  Display.print("fetching");
  delay(250);

  client.setInsecure();
}

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    if (millis() - api_lasttime > api_mtbs)  {
      // Instantiate http client
      // We use http client instead of YoutubeApi.h library to allow us to fetch data from any site in future
      HTTPClient http;

      // Convert the C-style strings to std::string objects
      std::string channelID(SECRET_CHANNELID);
      std::string apiKey(SECRET_APIKEY);

      // Create Api URL
      apiUrl = ("https://www.googleapis.com/youtube/v3/channels?part=statistics&id=" + channelID + "&key=" + apiKey).c_str();

      // Run API call and get status code
      http.begin(apiUrl);
      int httpCode = http.GET();

      if (httpCode > 0) {
        String payload = http.getString();

        // Deserialize the JSON document
        DeserializationError error = deserializeJson(doc, payload);

        // Test if parsing succeeds.
        if (error) {
          Serial.print(F("deserializeJson() failed: "));
          Serial.println(error.f_str());
          return;
        }

        // Display Sub or View count
        Serial.print(payload);
        if(showSubs) {
          subs = doc["items"][0]["statistics"]["subscriberCount"];
          String subsCount = num_format(subs);
          Serial.println(subsCount);
          Display.print("*" + subsCount); 
        }else{
          views = doc["items"][0]["statistics"]["viewCount"];
          String viewsCount = num_format(views);
          Serial.println(viewsCount);
          Display.print("*" + viewsCount); 
        }

        // Change from subs to views
        showSubs = !showSubs;
      }
      api_lasttime = millis();
    }
  }
}

// Code from The Swedish Maker
// https://www.youtube.com/@TheSwedishMaker
String num_format(long num){
     String num_s;
     long num_original = num;
     if (num>99999 && num<=999999){
        num = num / 1000;
        long fraction = num_original%1000;
        String num_fraction = String(fraction);
        String decimal = num_fraction.substring(0,1);
        num_s = String(num) + "." + decimal + "K";          
    }
    else if(num>999999){
        num = num / 1000000;
        long fraction = num_original%1000000;
        String num_fraction = String(fraction);
        String decimal = num_fraction.substring(0,1);
        if (num_original<100000000){
          num_s = " " + String(num) + "." + decimal + "M";      
        }
        else{
        num_s = String(num) + "." + decimal + "M";
        }
    }
    else{
        int num_l = String(num).length();
        char num_f[15];
        int blankDigits = 6 - num_l;
        for(int i = 0; i < blankDigits; i++){
          num_f[i] = ' '; 
        }
        num_f[blankDigits] = '\0';
        num_s = num_f + String(num);
    }
    return num_s;
}

the error said no wifi detected in scope

jremington · March 7, 2025, 5:10am

Please post the complete error message.

docdoc · March 7, 2025, 9:19am

...I would also ask him to add a connection diagram, since I see several libraries included, and there might be hardware or library conflicts.

meansmydog · March 7, 2025, 12:52pm

I watched a video and the guy didn’t connect anything and just programed the esp32 dev board

meansmydog · March 7, 2025, 12:53pm

here is the error message

/Users/timurkarpikov/Downloads/SubscriberCounter_sketch/SubscriberCounter_sketch.ino: In function 'void setup()':
/Users/timurkarpikov/Downloads/SubscriberCounter_sketch/SubscriberCounter_sketch.ino:48:3: error: 'WiFi' was not declared in this scope
48 | WiFi.begin(SECRET_SSID, SECRET_PASS);
| ^~~~
/Users/timurkarpikov/Downloads/SubscriberCounter_sketch/SubscriberCounter_sketch.ino:50:27: error: 'WL_CONNECTED' was not declared in this scope
50 | while (WiFi.status() != WL_CONNECTED) {
| ^~~~~~~~~~~~
/Users/timurkarpikov/Downloads/SubscriberCounter_sketch/SubscriberCounter_sketch.ino: In function 'void loop()':
/Users/timurkarpikov/Downloads/SubscriberCounter_sketch/SubscriberCounter_sketch.ino:68:7: error: 'WiFi' was not declared in this scope
68 | if (WiFi.status() == WL_CONNECTED) {
| ^~~~
/Users/timurkarpikov/Downloads/SubscriberCounter_sketch/SubscriberCounter_sketch.ino:68:24: error: 'WL_CONNECTED' was not declared in this scope
68 | if (WiFi.status() == WL_CONNECTED) {
| ^~~~~~~~~~~~

exit status 1

Compilation error: 'WiFi' was not declared in this scope

docdoc · March 7, 2025, 3:13pm

The message looks pretty clear to me, the "WiFi" object hasn't been declared.
Where does the WiFi library have been referenced at?
I mean a line like this (to be added before the "WiFiClientSecure.h" line):

#include <WiFi.h>

Btw IMO the whole code looks like to be a kinda "mix" of source: have you really written that code on your own, or it's kinda "mixed" code or, even worse, it's an AI-generated/ChatGPT "blob"?

meansmydog · March 7, 2025, 7:50pm

no its from YouTube

meansmydog · March 7, 2025, 9:46pm


```cpp
// Library Imports
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <ArduinoJson.h> 
#include <Wire.h>  
#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#include <HTTPClient.h>
#include <string>
// File imports
#include "secrets.h"
#include "FontSubs.h"

// Uncomment according to your hardware type
#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
//#define HARDWARE_TYPE MD_MAX72XX::GENERIC_HW

#define MAX_DEVICES 4
#define CS_PIN 5

MD_Parola Display = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);


WiFiClientSecure client;

unsigned long api_mtbs = 10000; // Change length of time before the next API call (Default: 10,000 -> 10 sec)
unsigned long api_lasttime;
long subs = 0;
long views = 0;

String apiUrl = "";
StaticJsonDocument<1000> doc;

bool showSubs = false;

void setup() {
  // Start Console
  Serial.begin(9600);

  // Setup screen,
  Display.begin();
  Display.setIntensity(0);
  Display.setFont(fontSubs);
  Display.setTextAlignment(PA_CENTER);

  // Connect to wifi
  Serial.print("Connecting to Wifi...");
  WiFi.begin(SECRET_SSID, SECRET_PASS);
  Display.print(" WiFi...");
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print("."); 
    delay(500);
  }
  Serial.println("");
  Serial.println(WiFi.localIP());
  Display.print("Connected");
  delay(2000);

  // Start process of getting data
  Display.displayClear();
  Display.print("fetching");
  delay(250);

  client.setInsecure();
}

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    if (millis() - api_lasttime > api_mtbs)  {
      // Instantiate http client
      // We use http client instead of YoutubeApi.h library to allow us to fetch data from any site in future
      HTTPClient http;

      // Convert the C-style strings to std::string objects
      std::string channelID(SECRET_CHANNELID);
      std::string apiKey(SECRET_APIKEY);

      // Create Api URL
      apiUrl = ("https://www.googleapis.com/youtube/v3/channels?part=statistics&id=" + channelID + "&key=" + apiKey).c_str();

      // Run API call and get status code
      http.begin(apiUrl);
      int httpCode = http.GET();

      if (httpCode > 0) {
        String payload = http.getString();

        // Deserialize the JSON document
        DeserializationError error = deserializeJson(doc, payload);

        // Test if parsing succeeds.
        if (error) {
          Serial.print(F("deserializeJson() failed: "));
          Serial.println(error.f_str());
          return;
        }

        // Display Sub or View count
        Serial.print(payload);
        if(showSubs) {
          subs = doc["items"][0]["statistics"]["subscriberCount"];
          String subsCount = num_format(subs);
          Serial.println(subsCount);
          Display.print("*" + subsCount); 
        }else{
          views = doc["items"][0]["statistics"]["viewCount"];
          String viewsCount = num_format(views);
          Serial.println(viewsCount);
          Display.print("*" + viewsCount); 
        }

        // Change from subs to views
        showSubs = !showSubs;
      }
      api_lasttime = millis();
    }
  }
}

// Code from The Swedish Maker
// https://www.youtube.com/@TheSwedishMaker
String num_format(long num){
     String num_s;
     long num_original = num;
     if (num>99999 && num<=999999){
        num = num / 1000;
        long fraction = num_original%1000;
        String num_fraction = String(fraction);
        String decimal = num_fraction.substring(0,1);
        num_s = String(num) + "." + decimal + "K";          
    }
    else if(num>999999){
        num = num / 1000000;
        long fraction = num_original%1000000;
        String num_fraction = String(fraction);
        String decimal = num_fraction.substring(0,1);
        if (num_original<100000000){
          num_s = " " + String(num) + "." + decimal + "M";      
        }
        else{
        num_s = String(num) + "." + decimal + "M";
        }
    }
    else{
        int num_l = String(num).length();
        char num_f[15];
        int blankDigits = 6 - num_l;
        for(int i = 0; i < blankDigits; i++){
          num_f[i] = ' '; 
        }
        num_f[blankDigits] = '\0';
        num_s = num_f + String(num);
    }
    return num_s;
}

meansmydog · March 7, 2025, 9:47pm

it works now thanks

docdoc · March 10, 2025, 9:47am

Ok, but never, ever, trust 100% what you find googling around, especially from unknow sites, forums, Youtube, and ChatGPT! You can't (shouldn't) get a code and project thinking you can use it kinda plug-and-play, because it often needs either a customization (e.g. different addresses, pins, etc) or a double check: in both case it means you must know what you're doing, to be able to identify any errors made by the author. And in this specific case the error message you reported here clearly tells you what's going on and, implicitly, what you need to do to correct this issue.

I'm telling you this because I hope it should help you to better understand that you need to make more practice and study, and avoid taking code found around as a Bible. Read the code, try to understand what it does and how, then you can start using it.

Good. It seems you just added the top #include line, right?

meansmydog · March 17, 2025, 2:58am

yes

system · September 13, 2025, 2:59am

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Need help on my subscriber view code

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