/*
*******************************************************************************
* Copyright (c) 2021 by M5Stack
* Equipped with M5Core2 sample source code
* 配套 M5Core2 示例源代码
* Visit for more information: https://docs.m5stack.com/en/core/core2
* 获取更多资料请访问: https://docs.m5stack.com/zh_CN/core/core2
*
* Describe: NTP TIME.
* Date: 2021/8/3
*******************************************************************************/
#include <M5Core2.h>
#include <WiFi.h>
#include "time.h"
// Set the name and password of the wifi to be connected. 配置所连接wifi的名称和密码
const char* ssid = "sensor-net";
const char* password = "sensor-net0101";
const char* ntpServer =
"ntp.nict.jp"; //Set the connect NTP server. 设置连接的NTP服务器
const long gmtOffset_sec = 32400;//3600*9h
const int daylightOffset_sec = 0;
void printLocalTime() { //Output current time. 输出当前时间
struct tm timeinfo;
if (!getLocalTime(
&timeinfo)) { //Return 1 when the time is successfully obtained. 成功获取到时间返回1
M5.Lcd.println("Failed to obtain time");
return;
}
M5.Lcd.println(
&timeinfo,
"%A, %B %d \n%Y %H:%M:%S"); //Screen prints date and time. 屏幕打印日期和时间
}
void setup() {
M5.begin(); //Init M5Core2. 初始化 M5Core2
M5.Lcd.setTextSize(2); //Set the font size to 2. 设置字号大小为2
M5.Lcd.printf("\nConnecting to %s", ssid);
WiFi.begin(
ssid,
password); //Connect wifi and return connection status. 连接wifi并返回连接状态
while (WiFi.status() !=
WL_CONNECTED) { //If the wifi connection fails. 若wifi未连接成功
delay(500); //delay 0.5s. 延迟0.5s
M5.Lcd.print(".");
}
M5.Lcd.println("\nCONNECTED!");
configTime(gmtOffset_sec, daylightOffset_sec,
ntpServer); //init and get the time. 初始化并设置NTP
printLocalTime();
WiFi.disconnect(true); //Disconnect wifi. 断开wifi连接
WiFi.mode(WIFI_OFF); //Set the wifi mode to off. 设置wifi模式为关闭
delay(20);
}
void loop() {
delay(1000);
M5.Lcd.setCursor(0, 47); //Set the cursor at (0,0). 设置光标位于(0,0)处
printLocalTime();
}