Martin Johnson / STM32F3-Discovery

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Interrupts and flags management functions
Functions

Interrupts and flags management functions
[RCC_Private_Functions]

Interrupts and flags management functions. More...

Functions

void RCC_ITConfig (uint8_t RCC_IT, FunctionalState NewState)
 Enables or disables the specified RCC interrupts.
FlagStatus RCC_GetFlagStatus (uint8_t RCC_FLAG)
 Checks whether the specified RCC flag is set or not.
void RCC_ClearFlag (void)
 Clears the RCC reset flags.
ITStatus RCC_GetITStatus (uint8_t RCC_IT)
 Checks whether the specified RCC interrupt has occurred or not.
void RCC_ClearITPendingBit (uint8_t RCC_IT)
 Clears the RCC's interrupt pending bits.

Detailed Description

Interrupts and flags management functions. 

 ===============================================================================
            ##### Interrupts and flags management functions #####
 ===============================================================================

Function Documentation

void RCC_ClearFlag ( void   )

Clears the RCC reset flags.

The reset flags are: RCC_FLAG_OBLRST, RCC_FLAG_PINRST, RCC_FLAG_PORRST, RCC_FLAG_SFTRST, RCC_FLAG_IWDGRST, RCC_FLAG_WWDGRST, RCC_FLAG_LPWRRST.

Parameters:
None
Return values:
None

Definition at line 1941 of file stm32f30x_rcc.c.

void RCC_ClearITPendingBit ( uint8_t  RCC_IT )

Clears the RCC's interrupt pending bits.

Parameters:
RCC_IT,:specifies the interrupt pending bit to clear. This parameter can be any combination of the following values:

  • RCC_IT_LSIRDY: LSI ready interrupt
  • RCC_IT_LSERDY: LSE ready interrupt
  • RCC_IT_HSIRDY: HSI ready interrupt
  • RCC_IT_HSERDY: HSE ready interrupt
  • RCC_IT_PLLRDY: PLL ready interrupt
  • RCC_IT_CSS: Clock Security System interrupt
Return values:
None

Definition at line 1991 of file stm32f30x_rcc.c.

FlagStatus RCC_GetFlagStatus ( uint8_t  RCC_FLAG )

Checks whether the specified RCC flag is set or not.

Parameters:
RCC_FLAG,:specifies the flag to check. This parameter can be one of the following values:

  • RCC_FLAG_HSIRDY: HSI oscillator clock ready
  • RCC_FLAG_HSERDY: HSE oscillator clock ready
  • RCC_FLAG_PLLRDY: PLL clock ready
  • RCC_FLAG_MCOF: MCO Flag
  • RCC_FLAG_LSERDY: LSE oscillator clock ready
  • RCC_FLAG_LSIRDY: LSI oscillator clock ready
  • RCC_FLAG_OBLRST: Option Byte Loader (OBL) reset
  • RCC_FLAG_PINRST: Pin reset
  • RCC_FLAG_PORRST: POR/PDR reset
  • RCC_FLAG_SFTRST: Software reset
  • RCC_FLAG_IWDGRST: Independent Watchdog reset
  • RCC_FLAG_WWDGRST: Window Watchdog reset
  • RCC_FLAG_LPWRRST: Low Power reset
Return values:
Thenew state of RCC_FLAG (SET or RESET).

Definition at line 1890 of file stm32f30x_rcc.c.

ITStatus RCC_GetITStatus ( uint8_t  RCC_IT )

Checks whether the specified RCC interrupt has occurred or not.

Parameters:
RCC_IT,:specifies the RCC interrupt source to check. This parameter can be one of the following values:

  • RCC_IT_LSIRDY: LSI ready interrupt
  • RCC_IT_LSERDY: LSE ready interrupt
  • RCC_IT_HSIRDY: HSI ready interrupt
  • RCC_IT_HSERDY: HSE ready interrupt
  • RCC_IT_PLLRDY: PLL ready interrupt
  • RCC_IT_CSS: Clock Security System interrupt
Return values:
Thenew state of RCC_IT (SET or RESET).

Definition at line 1959 of file stm32f30x_rcc.c.

void RCC_ITConfig ( uint8_t  RCC_IT,
FunctionalState  NewState 
)

Enables or disables the specified RCC interrupts.

Note:
The CSS interrupt doesn't have an enable bit; once the CSS is enabled and if the HSE clock fails, the CSS interrupt occurs and an NMI is automatically generated. The NMI will be executed indefinitely, and since NMI has higher priority than any other IRQ (and main program) the application will be stacked in the NMI ISR unless the CSS interrupt pending bit is cleared.
Parameters:
RCC_IT,:specifies the RCC interrupt sources to be enabled or disabled. This parameter can be any combination of the following values:

  • RCC_IT_LSIRDY: LSI ready interrupt
  • RCC_IT_LSERDY: LSE ready interrupt
  • RCC_IT_HSIRDY: HSI ready interrupt
  • RCC_IT_HSERDY: HSE ready interrupt
  • RCC_IT_PLLRDY: PLL ready interrupt
NewState,:new state of the specified RCC interrupts. This parameter can be: ENABLE or DISABLE.
Return values:
None

Definition at line 1853 of file stm32f30x_rcc.c.

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