#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <WiFi.h>
#include <time.h>

#define CREEN_WIDTH 128    
#define CREEN_HEIGHT 64   

Adafruit_SSD1306 display(CREEN_WIDTH, CREEN_HEIGHT, &Wire, -1);   

const char* ssid = "iPhone的P要大寫";       
const char* password ="11223344";         

const char* ntpServer = "pool.ntp.org";       
const long gmtOffset_sec =28800;       
const int daylightOffset_sec= 0;         
bool OLEDStatus = true;



void setup() {
  Serial.begin(9600);
  if(!display.begin(SSD1306_SWITCHCAPVCC,0x3c)) {       
    Serial.println(F("SSD1306 allocation falled"));         
    OLEDStatus = false;                   
  }
  
     Serial.printf("嘗試連接 %s ", ssid);     
   WiFi.begin(ssid, password);                    
while (WiFi.status() != WL_CONNECTED) {
      delay(5000);       
      Serial.print("連到了\n");                             
 }
 Serial.println("已連接");        
    configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);     
}  
void loop() {
  struct tm timeinfo;                    
  if(!getLocalTime(&timeinfo)){       
    Serial.println("時間取回失敗");   
    return;
  }
    Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S");  

  if(OLEDStatus==true) {
    display.clearDisplay();     
    display.setTextSize(2);            
    display.setTextColor(WHITE);  
    display.setCursor(4,0); 
    display.setTextColor(WHITE,BLACK);

    display.println(&timeinfo, "%F");
    display.setCursor(24,16);       
    display.println(&timeinfo, "%A");  
    
   

    display.setCursor(16,48);        
    display.println(&timeinfo, "%T");   
    display.display();          
  }
    delay(1000);
  }