Arduino连接时钟模块在LCD1602上显示时间

#include <Wire.h> #include <LiquidCrystal_I2C.h> #include <RTClib.h> DateTime now; RTC_DS3231 rtc; LiquidCrystal_I2C lcd(0x27,16,2); void displayDate(void); void displayTime(void); void setup () { Serial.begin(9600); lcd.begin(); lcd.backlight(); if (! rtc.begin()) { Serial.println("DS1307 RTC Module not Present"); while (1); } if (rtc.lostPower()) { Serial.println("RTC power failure, resetting the time!"); rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); } } void loop () { now = rtc.now(); displayDate(); displayTime(); } void displayTime() { lcd.setCursor(0,0); lcd.print("Time:"); lcd.print(now.hour()); lcd.print(':'); lcd.print(now.minute()); lcd.print(':'); lcd.print(now.second()); lcd.print(" "); } void displayDate() { lcd.setCursor(0,1); lcd.print("Date:"); lcd.print(now.day()); lcd.print('/'); lcd.print(now.month()); lcd.print('/'); lcd.print(now.year()); }