Отправлено Сергей Борщ 02 августа 2004 г. 22:16 В ответ на: Помогите m48t02 отправлено Ал 02 августа 2004 г. 18:43

extern unsigned char I2CReadBlock_1B(I2CDeviceType Slave, unsigned char Addres, void *Buffer, unsigned char Len);
extern unsigned char I2CWriteBlock_1B(I2CDeviceType Slave, unsigned char Addres, void *Buffer, unsigned char Len);
#define	_RTCStop	(1<<7)
#define	RTC_SecondsParts	0x00
#define	RTC_Seconds		0x01
#define	RTC_Minutes		0x02
#define	RTC_Hours		0x03
#define	RTC_Day			0x04
#define	RTC_Date		0x05
#define	RTC_Month		0x06
#define	RTC_Year		0x07
#define	RTC_Control		0x08
#define	RTC_Watchdog		0x09
#define	RTC_AlMonth		0x0A
#define	RTC_AlDate		0x0B
#define	RTC_AlHour		0x0C
#define	RTC_AlMinute		0x0D
#define	RTC_AlSecond		0x0E
#define	RTC_Flags		0x0F
#define	RTC_SQW			0x13
extern	cx_lock RTCLock;
typedef unsigned long ClockType;
typedef struct {
 unsigned char Min;
 unsigned char Hour;
}TimeType;
typedef struct {
 unsigned char Day;
 unsigned char Month;
 unsigned char Year;
}DateType;
typedef struct {
 TimeType Time;
 DateType Date;
}RTCType;
void RTCReadClock(RTCType *Destination) {
 unsigned char Tmp;
 cx_lock_w(&RTCLock);
 I2CReadBlock_1B(M41Txx, RTC_Minutes, (unsigned char*)&Destination->Time,sizeof(TimeType));
 I2CReadBlock_1B(M41Txx, RTC_Date, (unsigned char*)&Destination->Date,sizeof(DateType));
 I2CReadBlock_1B(M41Txx, RTC_Control, &Tmp, 1);	//dummy read to release data transfer 
 cx_unlock(&RTCLock);
 Destination->Time.Hour &= 0x3F;		/* mask CE, CEB */
}
void RTCSetClock(RTCType *Source) {
 cx_lock_w(&RTCLock);
 I2CWriteBlock_1B(M41Txx, RTC_Minutes, (unsigned char*)&Source->Time, sizeof(TimeType));
 I2CWriteBlock_1B(M41Txx, RTC_Date, (unsigned char*)&Source->Date, sizeof(DateType));
 cx_unlock(&RTCLock);
}
void RTCInit(void) {
 unsigned char Tmp;
 cx_lock_w(&RTCLock);
 I2CReadBlock_1B(M41Txx, RTC_Seconds, &Tmp, 1);
 if(Tmp & _RTCStop) {
  Tmp &= ~_RTCStop;
  I2CWriteBlock_1B(M41Txx, RTC_Seconds, &Tmp, 1);
 }
 Tmp = 0;
 I2CWriteBlock_1B(M41Txx,RTC_AlHour, &Tmp, 1);	//reset HT bit
 cx_unlock(&RTCLock);
}