Maxim-integrated 73S12xxF Software Manual do Utilizador descarregar pdf (Página 28)

73S12xxF Software User Guide UG_12xxF_016

28 Rev. 1.50

RTCCnt: Input parameter

32-bit RTC counter value.

RTCAcc[3]: Input parameter

24-bit accumulator value. Normally these values are to be initialized only once

during the manufacturing phase.

RTCTrim[3]: Input parameter

24-bit signed trimmer value. This is the offset value used to correct the quartz crystal

drift. It is the number of ticks between each correction of the Real Time Clock. Use

a negative numbers to decrease the tic-count by one and a positive number to

increase the tick-count by 1.

Return Codes None.

The RTC can be enabled and disabled via the PowerON() and PowerOFF() or RTCClk_Control ()

functions. The new values will not be loaded until the RTCLoad bit (bit 5) of the RTCCtl register

is set (HI).

RTClk_Read ()

Purpose Extract the current Real Time Clock control, counter, accumulator, and trimmer values.

Synopsis Void RTClk_Read ( IN struct RTC_t *pRTC );

struct RTC_t

{

Unsigned char RTCCtl;

Unsigned long RTCCnt;

Unsigned char RTCAcc[3];

Signed char RTCTrim[3];

}

Parameters RTCCtl: Output parameter

Current Real Time Clock Control register value (setting).

RTCCnt: Output parameter

Current Real Time Clock Counter value.

RTCAcc[3]: Output parameter

Current Real Time Clock accumulator value.

RTCTrim[3]: Output parameter

Current Real Time Clock Trimmer value.

Return Codes None.

RTCClk_GetTIME ()

Purpose Extract current calendar Time. Time conversion is done by the Gregorian/Julian conversion

method as defined on website: http://webexhibits.org/calendars/calendar-christian.html.

Synopsis Void RTCClk_GetTIME ( struct C_RTC_t xdata *pRTC_Time )

struct C_RTC_t

{

Unsigned char Sec;

Unsigned char Min;

Unsigned char Hour;

Unsigned char Date;

enum MONTH Month;

Unsigned integer Year;

enum RTC_INTERVAL TicInterval; //Tic interval - 1, 1/2 or 2 sec

enum RTC_INTERVAL IntInterval; //int interval. NO_INT=disable int.

};

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