Interrupts and flags management functions.
More...
|
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...
|
|
Interrupts and flags management functions.
===============================================================================
##### Interrupts and flags management functions #####
===============================================================================
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
-
- Return values
-
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
-
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
-
The | new 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
-
The | new 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
-