功能模塊介紹：
1.此電路板采用DS1307作為I2C實時時鐘芯片（RTC）
2.24C32作為EEPOM存儲器
3.采用LIR2032可充電鋰電池，并帶充電電路，解決了DS1307帶備電池不能讀寫的問題。
4.可以級聯其他的I2C設備
電路圖：
- /*
- DS1307.h - library for DS1307 rtc
- */
- // ensure this library description is only included once
- #ifndef DS1307_h
- #define DS1307_h
- // include types & constants of Wiring core API
- #include <WConstants.h>
- // include types & constants of Wire ic2 lib
- #include <../Wire/Wire.h>
- #define DS1307_SEC 0
- #define DS1307_MIN 1
- #define DS1307_HR 2
- #define DS1307_DOW 3
- #define DS1307_DATE 4
- #define DS1307_MTH 5
- #define DS1307_YR 6
- #define DS1307_BASE_YR 2000
- #define DS1307_SQW1HZ 7
- #define DS1307_SQW4KHZ 8
- #define DS1307_SQW8KHZ 9
- #define DS1307_SQW32KHZ 10
- #define DS1307_CTRL_ID B1101000 //DS1307
- // Define register bit masks
- #define DS1307_CLOCKHALT B10000000
- #define DS1307_LO_BCD B00001111
- #define DS1307_HI_BCD B11110000
- #define DS1307_HI_SEC B01110000
- #define DS1307_HI_MIN B01110000
- #define DS1307_HI_HR B00110000
- #define DS1307_LO_DOW B00000111
- #define DS1307_HI_DATE B00110000
- #define DS1307_HI_MTH B00110000
- #define DS1307_HI_YR B11110000
- // Prescaler
- #define DS1307_LOW_BIT B00000000
- #define DS1307_HIGH_BIT B10000000
- #define DS1307_SQW1HZ_BIT B00010000
- #define DS1307_SQW4KHZ_BIT B00010001
- #define DS1307_SQW8KHZ_BIT B00010010
- #define DS1307_SQW32KHZ_BIT B00010011
- // library interface description
- class DS1307
- {
- // user-accessible "public" interface
- public:
- DS1307();
- void get(int *, boolean);
- int get(int, boolean);
- void set(int, int);
- void start(void);
- void stop(void);
- void SetOutput(int c);
- int GetOutput(void);
-
- // library-accessible "private" interface
- private:
- byte rtc_bcd[7]; // used prior to read/set ds1307 registers;
- void read(void);
- void save(void);
- };
- extern DS1307 RTC;
- #endif
全部資料（壓縮包）下載：
I2CRTC模塊.rar
(742.75 KB, 下載次數: 74)
2016-6-6 21:36 上傳
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