#include <WiFi.h>
#include <HTTPClient.h>

char ssid[] = "SSID"; //請修改為您連線的網路名稱
char password[] = "SSIDpassword"; //請修改為您連線的網路密碼
char url[] = "http://opendata2.epa.gov.tw/AQI.json"; //PM2.5的網址

void setup() {
Serial.begin(115200);
delay(1000);
Serial.print("開始連線到無線網路SSID:");
Serial.println(ssid);
//1.設定WiFi模式
WiFi.mode(WIFI_STA);
//2.啟動WiFi連線
WiFi.begin(ssid, password);
//3.檢查連線狀態
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(1000);
}
Serial.println("連線完成");
}

void loop() {
//4.啟動網頁連線
Serial.println("啟動網頁連線");
HTTPClient http;
http.begin(url);
int httpCode = http.GET();
Serial.print("httpCode=");
Serial.println(httpCode);
//5.檢查網頁連線是否正常
if (httpCode == HTTP_CODE_OK) {
//6.取得網頁內容
String payload = http.getString();
Serial.print("payload=");
//7.將資料顯示在螢幕上
Serial.println(payload);
}
//8.關閉網頁連線
http.end();
delay(10000);
}