// /0978/NTPClock_LOLIN32_TM1637/NTPClock_LOLIN32_TM1637.ino     ; update: 2024/01/22  20:40
//Board: ESP32 Dev Module
//
#include <WiFi.h>
#include "time.h"
#include <TM1637Display.h>

#define CLK 22  //Wire SCL
#define DIO 21  //Wire SDA

const char* ssid       = "ax50anotherZ";
const char* password   = "rock#tang@50Gpgw";

const char* ntpServer = "ntp.nict.jp";
const long  gmtOffset_sec = 3600*9; // JST
const int   daylightOffset_sec = 0;
static char buf[30];//20

TM1637Display display(CLK, DIO);

uint8_t data[]= { 0xff, 0xff, 0xff, 0xff }; // all '1'
struct tm timeinfo;
static bool cFLG=true;
unsigned int ntime;

///byte Hour = 0;
///byte Min = 0;
//byte Sec = 0;

void printLocalTime(){
  if(!getLocalTime(&timeinfo)){
    Serial.println("Failed to obtain time");
    return;
  }
//  time_t epTime = time(NULL); ///timeClient.getEpochTime();
//  timeinfo = *localtime(&epTime);

//  Serial.println(&timeinfo, "%H:%M:%S");
//  sprintf(buf, "32: %02d:%02d", timeinfo.tm_hour, timeinfo.tm_min);
//  Serial.println(buf);
}

void setup(){
  Serial.begin(115200);
  while (!Serial);
  display.setBrightness(0x0f);
  
  //connect to WiFi
  Serial.printf("39: Connecting to %s ", ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
  }
  Serial.println(" CONNECTED");
  
  //init and get the time
  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
  printLocalTime();

  //disconnect WiFi as it's no longer needed
  WiFi.disconnect(true);
  WiFi.mode(WIFI_OFF);
}

void loop(){
  delay(1000);
//  time_t epTime = time(NULL); ///timeClient.getEpochTime();
//  timeinfo = *localtime(&epTime);
  getLocalTime(&timeinfo);
  ntime = timeinfo.tm_hour * 100 + timeinfo.tm_min;
///    Hour = timeinfo.tm_hour;
///    Min  = timeinfo.tm_min;
///    Sec  = timeinfo.tm_sec;
//  sprintf(buf, "%02d:%02d:%02d", timeinfo.tm_hour, timeinfo.tm_min, timeinfo.tm_sec);
//  Serial.println(buf);

///  Serial.print(Hour);Serial.print(":");Serial.print(Min);Serial.print(":");Serial.println(Sec);
 
///  data[0] = display.encodeDigit(Hour / 10);
///  data[1] = display.encodeDigit(Hour % 10) | 0b10000000;
///  data[2] = display.encodeDigit(Min / 10);
///  data[3] = display.encodeDigit(Min % 10);
///  display.setSegments(data);
  if ( cFLG == true ) display.showNumberDecEx(ntime, 0x40, true);
  else if ( cFLG == false ) display.showNumberDecEx(ntime, 0x0, true);
  cFLG = !cFLG;
}