UM0097 datasheet(86/229 Pages) STMICROELECTRONICS

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Peripheral firmware overview

UM0097

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Table 40 describes the states of RTC flags.

RTC interrupts

The following enumeration defines the real time clock interrupts. The RTC_IT enumeration

is declared in the file 71x_rtc.h:

typedef enum

{

RTC_GIT

= 0x0008,

RTC_OWIT = 0x0004,

RTC_AIT

= 0x0002,

RTC_SIT

= 0x0001,

} RTC_IT;

Table 41 describes the RTC interrupts.

3.7.2

Firmware library functions

Table 42 enumerates the different functions of the RTC library.

Table 40.

RTC flags

RTC Flags

Description

RTC_GIR

RTC Global Interrupt Request flag

RTC_OWIR

RTC overflow interrupt request

RTC_AIR

RTC Alarm interrupt request

RTC_SIR

RTC Second interrupt request

Table 41.

RTC interrupts

Constant Name

Description

RTC_GIT

The RTC Global Interrupt

RTC_OWIT

The RTC overflow interrupt

RTC_AIT

The RTC Alarm interrupt

RTC_SIT

The RTC Second interrupt

Table 42.

RTC library functions

Function Name

Description

RTC_PrescalerValue

Reads and returns the prescaler value

RTC_PrescalerConfig

Configures the prescaler

RTC_CounterValue

Reads and returns the counter value

RTC_CounterConfig

Update the RTC counter value

RTC_AlarmValue

Reads and returns the Alarm time value

RTC_AlarmConfig

Configures the alarm time value

RTC_FlagStatus

Reads and returns the status of the specified RTC flag

RTC_FlagClear

Clears the specified RTC flag passed in parameter

RTC_ITConfig

Enables / Disables the specified RTC interrupt

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