1) ? ?功能

1、運用DS1302時鐘模塊和OLED顯示屏顯示當前時間

2、設定鬧鐘

2） 硬件

DS1302時鐘模塊、OLED顯示屏，Arduino uno/nano，杜邦線

3) ? 連線

DS1302時鐘模塊data——Arduino A1引腳

DS1302時鐘模塊clk——Arduino A2引腳

DS1302時鐘模塊rst——Arduino A0引腳

DS1302時鐘模塊VCC——Arduino 5V

DS1302時鐘模塊GND——Arduino GND

OLED顯示屏 SCL——Arduino A5引腳

OLED顯示屏SDA——Arduino A4引腳

OLED顯示屏VCC——Arduino 5V

OLED顯示屏GND——Arduino GND

4) ? 代碼

顯示當前時間

#include <U8g2lib.h> #include <Wire.h> #include <ThreeWire.h> #include <RtcDS1302.h> U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE); ThreeWire myWire(A1, A2, A0); //set data.clk,rst Pin RtcDS1302<ThreeWire> Rtc(myWire); #define countof(a) (sizeof(a) / sizeof(a[0])) int yue , ri, nian, shi , fen , miao , zhou ; void setup() {Serial.begin(9600);Rtc.Begin();u8g2.begin();RtcDateTime compiled = RtcDateTime(__DATE__, __TIME__); //Set Time for Rtc ObjectRtcDateTime now = Rtc.GetDateTime();} void loop() {RtcDateTime now = Rtc.GetDateTime();printDateTime(now);串口打印當前時間show_time(now);//屏幕上顯示當前時間 } void printDateTime(const RtcDateTime& dt) {char datestring[22];snprintf_P(datestring,countof(datestring),PSTR("%02u/%02u/%04u %02u:%02u:%02u %01u"),//輸出日期到串口 輸出的結果總共占兩位,十進制的形式輸出dt.Month(),dt.Day(),dt.Year(),dt.Hour(),dt.Minute(),dt.Second(),dt.DayOfWeek());//Serial.println(datestring); } //show time void show_time(const RtcDateTime & dt) { //時間顯示頁面String z_str = "";yue = dt.Month();ri = dt.Day();nian = dt.Year();shi = dt.Hour();fen = dt.Minute();miao = dt.Second();zhou = dt.DayOfWeek();switch ( zhou){ //將星期從數字轉換為名稱case 7: z_str = "Sunday"; break;case 1: z_str = "Monday"; break;case 2: z_str = "Tuesday"; break;case 3: z_str = "Wednesday"; break;case 4: z_str = "Thursday"; break;case 5: z_str = "Friday"; break;case 6: z_str = "Saturday"; break;}u8g2.firstPage();do {u8g2.setFont(u8g2_font_ncenB10_tr);//設置字體u8g2.setCursor(12, 18); //設置光標處u8g2.print(String(nian) + "-" + String(yue) + "-" + String(ri));//輸出內容u8g2.setCursor(24, 41); //設置光標處u8g2.print(String(shi) + ":" + String(fen) + ":" + String(miao));//輸出內容u8g2.setCursor(12, 60);//設置光標處u8g2.print(z_str);//輸出內容} while ( u8g2.nextPage() );// delay(50); }

設定鬧鐘——例如中午十二點

#include <U8g2lib.h> #include <Wire.h> #include <ThreeWire.h> #include <RtcDS1302.h> U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE); ThreeWire myWire(A1, A2, A0); //set data.clk,rst Pin RtcDS1302<ThreeWire> Rtc(myWire); #define countof(a) (sizeof(a) / sizeof(a[0])) int yue , ri, nian, shi , fen , miao , zhou ; void setup() {Serial.begin(9600);Rtc.Begin();u8g2.begin();RtcDateTime compiled = RtcDateTime(__DATE__, __TIME__); //Set Time for Rtc ObjectRtcDateTime now = Rtc.GetDateTime();} void loop() {RtcDateTime now = Rtc.GetDateTime();printDateTime(now); 串口打印當前時間show_time(now);//屏幕上顯示當前時間if (RtcDateTime (shi) == 12 && RtcDateTime (fen) == 00 && RtcDateTime (miao) == 00) {//鬧鐘設置Serial.print("十二點的鬧鐘");} } void printDateTime(const RtcDateTime& dt) {char datestring[22];snprintf_P(datestring,countof(datestring),PSTR("%02u/%02u/%04u %02u:%02u:%02u %01u"),//輸出日期到串口 輸出的結果總共占兩位,十進制的形式輸出dt.Month(),dt.Day(),dt.Year(),dt.Hour(),dt.Minute(),dt.Second(),dt.DayOfWeek());//Serial.println(datestring); } //show time void show_time(const RtcDateTime & dt) { //時間顯示頁面String z_str = "";yue = dt.Month();ri = dt.Day();nian = dt.Year();shi = dt.Hour();fen = dt.Minute();miao = dt.Second();zhou = dt.DayOfWeek();switch ( zhou){ //將星期從數字轉換為名稱case 7: z_str = "Sunday"; break;case 1: z_str = "Monday"; break;case 2: z_str = "Tuesday"; break;case 3: z_str = "Wednesday"; break;case 4: z_str = "Thursday"; break;case 5: z_str = "Friday"; break;case 6: z_str = "Saturday"; break;}u8g2.firstPage();do {u8g2.setFont(u8g2_font_ncenB10_tr);//設置字體u8g2.setCursor(12, 18); //設置光標處u8g2.print(String(nian) + "-" + String(yue) + "-" + String(ri));//輸出內容u8g2.setCursor(24, 41); //設置光標處u8g2.print(String(shi) + ":" + String(fen) + ":" + String(miao));//輸出內容u8g2.setCursor(12, 60);//設置光標處u8g2.print(z_str);//輸出內容} while ( u8g2.nextPage() );// delay(50); }

后續可以結合旋轉編碼器設定時間鬧鐘

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