UM0097 datasheet(85/229 Pages) STMICROELECTRONICS

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UM0097

Peripheral firmware overview

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The RTC peripheral is declared in the same file:

...

#define RTC_BASE

0xE000D000

...

#ifndef DEBUG

...

#ifdef _RTC

#define RTC

((RTC_TypeDef *)RTC_BASE)

#endif /*RTC*/

...

#else

/* DEBUG */

...

#ifdef _RTC

EXT RTC_TypeDef

*RTC;

#endif /*RTC*/

...

#endif

When debug mode is used, RTC pointer is initialized in the file 71x_lib.c:

#ifdef _RTC

RTC = (RTC_TypeDef *)RTC_BASE;

#endif

In debug mode, _RTC must be defined, in the file 71x_conf.h, to access the peripheral

registers as follows:

#define _RTC

RTC flags

The following enumeration defines the different RTC flags. The RTC_FLAGS enumeration is

defined in the file 71x_rtc.h:

typedef enum

{

RTC_GIR

= 0x0008,

RTC_OWIR

= 0x0004,

RTC_AIR

= 0x0002,

RTC_SIR

= 0x0001

} RTC_FLAGS;

DIVH

Prescaler Divider Value High register

DIVL

Prescaler Divider Value Low register

CNTH

Counter High register

CNTL

Counter Low register

ALRH

Alarm High register

ALRL

Alarm Low register

Table 39.

RTC structure fields (continued)

Description

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