//GPSモジュール：VK2828U7G5
//
//接続（色に注意）
//赤 1:PPS Time standard pulse output
//黒 2:VCC Power supply input 3.3V-5V
//黄 3:TX UART/TTL Interface
//緑 4:RX UART/TTL Interface
//青 5:GND Ground
//白 6:EN 有効・無効
//
#include <TinyGPSPlus.h>

const int rxPin = 20;
const int txPin = 21;

TinyGPSPlus gps;

void setup(void) {
	Serial.begin(115200);
	while(!Serial) delay(200);

	Serial.print(" rxPin: ");
	Serial.print(rxPin);
	Serial.print(" txPin: ");
	Serial.print(txPin);
	Serial.println();

	Serial1.begin(9600, SERIAL_8N1, rxPin, txPin);
	while(!Serial1) delay(200);
}

void loop(void) {
	if(Serial1.available() > 0) {		//If anything comes in Serial1 (pins 0 & 1)
		if(gps.encode(Serial1.read())) {
			GpsTimeRead();				//時刻
		}
	}
}


uint16_t year;
uint8_t month;
uint8_t day;
uint8_t hour;
uint8_t minutes;
uint8_t second;
uint8_t week;

void GpsTimeRead(void) {
	tm t;
	time_t tim;
	tm* ltim;

	if(gps.time.isUpdated()) {
		t.tm_year = gps.date.year() - 1900;
		t.tm_mon = gps.date.month() - 1;	//0からカウントするので-1
		t.tm_mday = gps.date.day();
		t.tm_hour = gps.time.hour() + 9; 	//日本：世界標準時から9時間ずれ
		t.tm_min = gps.time.minute();
		t.tm_sec = gps.time.second();

		tim = mktime(&t);					//UNIX時間からの経過
		ltim = localtime(&tim);				//ローカル時間に置き換え（経過時間をtm構造体に置き換え）

		year = ltim->tm_year + 1900;
		month = ltim->tm_mon + 1;
		day = ltim->tm_mday;
		hour = ltim->tm_hour;
		minutes = ltim->tm_min;
		second = ltim->tm_sec;
		week = ltim->tm_wday;

		Serial.print(year);
		Serial.print("/");

		if(month > 9) {
			Serial.print(month);
		} else {
			Serial.print("0");
			Serial.print(month);
		}
		Serial.print("/");

		if(day > 9) {
			Serial.print(day);
		} else {
			Serial.print("0"); Serial.print(day);
		}
		Serial.print("/");

		if(hour > 9) {
			Serial.print(hour);
		} else {
			Serial.print("0"); Serial.print(hour);
		}
		Serial.print(":");

		if(minutes > 9) {
			Serial.print(minutes);
		} else {
			Serial.print("0"); Serial.print(minutes);
		}
		Serial.print(":");

		if(second > 9){
			Serial.print(second);
		} else {
			Serial.print("0");
			Serial.print(second);
		}
		Serial.print("-");

		switch(week){
		case 0:
			Serial.println("SUN");
			break;
		case 1:
			Serial.println("MON");
			break;
		case 2:
			Serial.println("TUE");
			break;
		case 3:
			Serial.println("WED");
			break;
		case 4:
			Serial.println("THU");
			break;
		case 5:
			Serial.println("FRI");
			break;
		case 6:
			Serial.println("SAT");
			break;
		}
	}
}