Hi.
What course and what project are you following?

Learn ESP32 on Arduino IDE

What is the project?

ESP32 HTTP GET (OpenWeatherMap and ThingSpeak)
It says that I can customize it to my need to any API so I did some digging and I found out there is no API key.  So I just customized my code with the endpoint (https://en.wikipedia.org/w/api.php?action=query&exlimit=1&explaintext=1&exsentences=10&formatversion=2&prop=extracts&titles=Pet_door&format=json).  I would like to share my code but I have no idea how to.
 

Hi.
To share your code use github gist or pastebin.
Regards,
Sara

1. #include <WiFi.h>
2. #include <HTTPClient.h>
3. #include <Arduino_JSON.h>
4.  
5. const char* ssid = “Thunderbird”;
6. const char* password = “7327628990”;
7.  
8. // Your Domain name with URL path or IP address with path
9.  
10. // Example:
11.  
12.  
13. // Replace with your country code and city
14.  
15.  
16. // THE DEFAULT TIMER IS SET TO 10 SECONDS FOR TESTING PURPOSES
17. // For a final application, check the API call limits per hour/minute to avoid getting blocked/banned
18. unsigned long lastTime = 0;
19. // Timer set to 10 minutes (600000)
20. //unsigned long timerDelay = 600000;
21. // Set timer to 10 seconds (10000)
22. unsigned long timerDelay = 10000;
23.  
24. String jsonBuffer;
25.  
26. void setup() {
27. Serial.begin(115200);
28.  
29. WiFi.begin(ssid, password);
30. Serial.println(“Connecting”);
31. while(WiFi.status() != WL_CONNECTED) {
32. delay(500);
33. Serial.print(“.”);
34. }
35. Serial.println(“”);
36. Serial.print(“Connected to WiFi network with IP Address: “);
37. Serial.println(WiFi.localIP());
38.  
39. Serial.println(“Timer set to 10 seconds (timerDelay variable), it will take 10 seconds before publishing the first reading.”);
40. }
41.  
42. void loop() {
43. // Send an HTTP GET request
44. if ((millis() – lastTime) > timerDelay) {
45. // Check WiFi connection status
46. if(WiFi.status()== WL_CONNECTED){
47. String serverPath = “en.wikipedia.org/w/api.php?action=query&exlimit=1&explaintext=1&exsentences=10&formatversion=2&prop=extracts&titles=Pet_door&format=json”;
48.  
49. jsonBuffer = httpGETRequest(serverPath.c_str());
50. Serial.println(jsonBuffer);
51. JSONVar myObject = JSON.parse(jsonBuffer);
52.  
53. // JSON.typeof(jsonVar) can be used to get the type of the var
54. if (JSON.typeof(myObject) == “undefined”) {
55. Serial.println(“Parsing input failed!”);
56. return;
57. }
58.  
59. Serial.print(“JSON object = “);
60. Serial.println(myObject);
61.  
62. }
63. else {
64. Serial.println(“WiFi Disconnected”);
65. }
66. lastTime = millis();
67. }
68. }
69.  
70. String httpGETRequest(const char* serverName) {
71. WiFiClient client;
72. HTTPClient http;
73. Serial.println(serverName);
74. // Your Domain name with URL path or IP address with path
75. http.begin(client, serverName);
76.  
77. // Send HTTP POST request
78. int httpResponseCode = http.GET();
79.  
80. String payload = “{}”;
81.  
82. if (httpResponseCode>0) {
83. Serial.print(“HTTP Response code: “);
84. Serial.println(httpResponseCode);
85. payload = http.getString();
86. }
87. else {
88. Serial.print(“Error code: “);
89. Serial.println(httpResponseCode);
90. }
91. // Free resources
92. http.end();
93.  
94. return payload;
95. }

1. Is this right?

Hi.
Please share your code using pastebin or Github Gist.
The code gets messed up with the formatting and I can’t test it.
Thanks for your patience.
Regards,
Sara

Hi.
Try this code.
https://gist.github.com/sarasantos/e4673cefc088ae664422dabe19f83258
It’s simpler. Don’t forget to add your SSID and password.
The response is saved on the payload variable. Then, modify the variable or convert it to a JSON object if that’s more convenient for your project.
Regards,
Sara