[ADUC812] ADUC812 설명 8

 

SOURCE 공개

 

1. I2C용 RTC S3530A 루틴

//-------- S3530A STATUS REG ----------- #define    S3530_REG_INT2FE_BIT    0x01        //INT2 level interrupt set #define    S3530_REG_INT1FE_BIT    0x02        //INT1 level interrupt set #define    S3530_REG_INT2ME_BIT    0x04        //INT2 edge interrupt #define    S3530_REG_INT1ME_BIT    0x08        //INT2 edge interrupt #define    S3530_REG_INT2AE_BIT    0x10 //INT2 interrupt output enable(1), disabled(0). #define    S3530_REG_INT1AE_BIT    0x20 //INT1 interrupt output enable(1), disabled(0). #define    S3530_REG_1224_BIT    0x40 //12(0), 24(1) time mode set #define    S3530_REG_POWER_BIT    0x80 //Power Status, Normal(1), Fail(0)   typedef    struct{             _uchar    your;         _uchar    mon;         _uchar    day;         _uchar    day_week;         _uchar    time;         _uchar    min;         _uchar    sec;         _uchar    reg;          }_rtc;     xdata _rtc rtc_temp;    //data를 읽은 원본,data를 저장할때 쓰는 버퍼 xdata _rtc rtc;   void rtc_time_read() {     i2c_start();     i2c_write(0x65);      //access 1 mode     rtc_temp.your = i2c_read(YES);     rtc_temp.mon = i2c_read(YES);     rtc_temp.day = i2c_read(YES);     rtc_temp.day_week = i2c_read(YES);     rtc_temp.time = i2c_read(YES);     rtc_temp.min = i2c_read(YES);     rtc_temp.sec = i2c_read(NO);     i2c_stop();       //data 가공     rtc_temp.your = by_byte(rtc_temp.your);     rtc_temp.mon = by_byte(rtc_temp.mon);     rtc_temp.day = by_byte(rtc_temp.day);     rtc_temp.day_week = by_byte(rtc_temp.day_week);     rtc_temp.time = by_byte(rtc_temp.time);     if(rtc_temp.time & 0x80) //상위 bit 1이면 12시간 제의 오후     {         rtc_temp.time = rtc_temp.time & 0x7F;         //rtc_temp.time = rtc_temp.time + 11; //24시간 형태로 변경              }       rtc_temp.min = by_byte(rtc_temp.min); //Control register     rtc_temp.sec = by_byte(rtc_temp.sec) & 0x7F; //Control register       //data 버퍼에 복사     rtc.your= rtc_temp.your;     rtc.mon= rtc_temp.mon;     rtc.day= rtc_temp.day;     // //p_sts.rtc_time[3] = rtc.day_week = rtc_temp.day_week;     rtc.time = rtc_temp.time;     rtc.min = rtc_temp.min; //Control register     rtc.sec = rtc_temp.sec; //Control register     }   /* * 레지스터 내용 * bit 7 : 1(전원 들어옴) ,read only * bit 6 : 0(12시간제) , 1(24시간제) * bit 5 : /INT1 동작, 0(동작안함), 1(동작함) * bit 4 : /INT2 동작, 0(동작안함), 1(동작함) * bit 3 : 인터럽트 동작 설정 찾아서 해보길 * bit 2 : * bit 1 : * bit 0 : */   void rtc_reg_read() {     i2c_start();     i2c_write(0x65);      //access 1 mode      _nop_ ();     rtc_temp.reg = i2c_read(NO);     _nop_ ();     i2c_stop();     rtc.reg = by_byte(rtc_temp.reg); //Control register   }   //RTC 데이터 쓰기..... void rtc_time_write() {       rtc_temp.your = by_byte(rtc_temp.your);     rtc_temp.mon = by_byte(rtc_temp.mon);     rtc_temp.day = by_byte(rtc_temp.day);     //rtc_temp.day_week = by_byte(rtc_temp.day_week);     rtc_temp.time = by_byte(rtc_temp.time);     rtc_temp.min = by_byte(rtc_temp.min);     rtc_temp.sec = by_byte(rtc_temp.sec);         i2c_start();     i2c_write(0x64);      //access 1 mode      _nop_ ();      _nop_ ();     i2c_write(rtc_temp.your);      _nop_ ();      _nop_ ();     i2c_write(rtc_temp.mon);      _nop_ ();      _nop_ ();     i2c_write(rtc_temp.day);      _nop_ ();      _nop_ ();     i2c_write(rtc_temp.day_week);     //주의 어떻게 될지 모름      _nop_ ();      _nop_ ();     i2c_write(rtc_temp.time);      _nop_ ();      _nop_ ();     i2c_write(rtc_temp.min);      _nop_ ();      _nop_ ();     i2c_write(rtc_temp.sec);      _nop_ ();      _nop_ ();     i2c_stop();   }   // RTC초기화 부분.. 상태register 에 쓰는부분.... void rtc_reg_write() {     rtc_temp.reg = by_byte(rtc_temp.reg);       i2c_start();     i2c_write(0x62);      //access 1 mode      _nop_ ();      _nop_ ();     i2c_write(rtc_temp.reg);      _nop_ ();      _nop_ ();     i2c_stop(); }   void rtc_init() {     rtc_temp.reg = S3530_REG_1224_BIT;    //rtc초기화     rtc_reg_write(); }   //상위비트와 하위 비트를 바꾸어 준다. unsigned char by_byte(unsigned char in_data) {     unsigned char i,temp_data, out_data = 0;     bit k;       for(i=0 ; i<8 ;i++)     {           k = ((in_data & 0x80) ? 1 : 0); //msb data         in_data <<= 1;     // Shift the byte by one bit         temp_data = 0;         temp_data |= k;        //lsb data         temp_data <<= i;         out_data |= temp_data;     }       return out_data; }