// ESP32 WiFi Jokes Client
//
// https://wokwi.com/arduino/projects/336743172331799123
//
// Copyright (C) 2022, Uri Shaked
#include <WiFi.h>
#include <LiquidCrystal_I2C.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 20, 4);
String getJoke() {
HTTPClient http;
http.useHTTP10(true);
http.begin("https://v2.jokeapi.dev/joke/Programming");
http.GET();
String result = http.getString();
Serial.println(result);
DynamicJsonDocument doc(2048);
DeserializationError error = deserializeJson(doc, result);
// Test if parsing succeeds.
if (error) {
Serial.print("deserializeJson() failed: ");
Serial.println(error.c_str());
return "<error>";
}
String type = doc["type"].as<String>();
String joke = doc["joke"].as<String>();
String setup = doc["setup"].as<String>();
String delivery = doc["delivery"].as<String>();
http.end();
return type.equals("single") ? joke : setup + " " + delivery;
}
void spinner() {
static int8_t counter = 0;
const char* glyphs = "\xa1\xa5\xdb";
LCD.setCursor(15, 1);
LCD.print(glyphs[counter++]);
if (counter == strlen(glyphs)) {
counter = 0;
}
}
void setup() {
Serial.begin(115200);
delay(10);
LCD.init();
LCD.backlight();
LCD.setCursor(0, 0);
LCD.print("Connecting to ");
LCD.setCursor(0, 1);
LCD.print("WiFi ");
WiFi.begin("Wokwi-GUEST", "");
while (WiFi.status() != WL_CONNECTED) {
delay(250);
spinner();
}
Serial.println("");
Serial.println("WiFi connected");
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
LCD.clear();
LCD.setCursor(0, 0);
LCD.println("Online");
LCD.setCursor(0, 2);
LCD.println("Getting jokes...");
}
void loop() {
String joke = getJoke();
LCD.clear();
for (int line = 0; line < 4; line++) {
LCD.setCursor(0, line);
LCD.print(joke.substring(line * 20, (line + 1) * 20));
}
delay(4000);
}