STM32F0 Standard Peripheral bibliotheek  1.0
ST Microelectronics standard peripheral bibliotheek documentatie voor de STM32F0 familie
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Interrupts and flags management functions

Interrupts and flags management functions. More...

Functions

void RCC_ITConfig (uint8_t RCC_IT, FunctionalState NewState)
 Enables or disables the specified RCC interrupts. More...
 
FlagStatus RCC_GetFlagStatus (uint8_t RCC_FLAG)
 Checks whether the specified RCC flag is set or not. More...
 
void RCC_ClearFlag (void)
 Clears the RCC reset flags. The reset flags are: RCC_FLAG_OBLRST, RCC_FLAG_PINRST, RCC_FLAG_V18PWRRSTF, RCC_FLAG_PORRST, RCC_FLAG_SFTRST, RCC_FLAG_IWDGRST, RCC_FLAG_WWDGRST, RCC_FLAG_LPWRRST. More...
 
ITStatus RCC_GetITStatus (uint8_t RCC_IT)
 Checks whether the specified RCC interrupt has occurred or not. More...
 
void RCC_ClearITPendingBit (uint8_t RCC_IT)
 Clears the RCC's interrupt pending bits. More...
 

Detailed Description

Interrupts and flags management functions.

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             ##### Interrupts and flags management functions #####
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Function Documentation

void RCC_ClearFlag ( void  )

Clears the RCC reset flags. The reset flags are: RCC_FLAG_OBLRST, RCC_FLAG_PINRST, RCC_FLAG_V18PWRRSTF, RCC_FLAG_PORRST, RCC_FLAG_SFTRST, RCC_FLAG_IWDGRST, RCC_FLAG_WWDGRST, RCC_FLAG_LPWRRST.

Parameters
None
Return values
None
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_HSI14RDY: HSI14 ready interrupt
  • RCC_IT_CSS: Clock Security System interrupt
Return values
None
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_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_V18PWRRSTF: V1.8 power domain 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
  • RCC_FLAG_HSI14RDY: HSI14 oscillator clock ready
Return values
Thenew state of RCC_FLAG (SET or RESET).
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_HSI14RDY: HSI14 ready interrupt
  • RCC_IT_CSS: Clock Security System interrupt
Return values
Thenew state of RCC_IT (SET or RESET).
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
  • RCC_IT_HSI14RDY: HSI14 ready interrupt
NewState,:new state of the specified RCC interrupts. This parameter can be: ENABLE or DISABLE.
Return values
None