Interrupts and flags management functions

Interrupts and flags management functions. More...

Collaboration diagram for Interrupts and flags management functions:

Functions
void	LTDC_ITConfig (uint32_t LTDC_IT, FunctionalState NewState)
	Enables or disables the specified LTDC's interrupts. More...
FlagStatus	LTDC_GetFlagStatus (uint32_t LTDC_FLAG)
	Checks whether the specified LTDC's flag is set or not. More...
void	LTDC_ClearFlag (uint32_t LTDC_FLAG)
	Clears the LTDC's pending flags. More...
ITStatus	LTDC_GetITStatus (uint32_t LTDC_IT)
	Checks whether the specified LTDC's interrupt has occurred or not. More...
void	LTDC_ClearITPendingBit (uint32_t LTDC_IT)
	Clears the LTDC's interrupt pending bits. More...

Detailed Description

Interrupts and flags management functions.

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

    [..] This section provides functions allowing to configure the LTDC Interrupts 
         and to get the status and clear flags and Interrupts pending bits.
  
    [..] The LTDC provides 4 Interrupts sources and 4 Flags
    
    *** Flags ***
    =============
    [..]
      (+) LTDC_FLAG_LI:   Line Interrupt flag.
      (+) LTDC_FLAG_FU:   FIFO Underrun Interrupt flag.
      (+) LTDC_FLAG_TERR: Transfer Error Interrupt flag.
      (+) LTDC_FLAG_RR:   Register Reload interrupt flag.
      
    *** Interrupts ***
    ==================
    [..]
      (+) LTDC_IT_LI: Line Interrupt is generated when a programmed line 
                      is reached. The line interrupt position is programmed in 
                      the LTDC_LIPR register.
      (+) LTDC_IT_FU: FIFO Underrun interrupt is generated when a pixel is requested 
                      from an empty layer FIFO
      (+) LTDC_IT_TERR: Transfer Error interrupt is generated when an AHB bus 
                        error occurs during data transfer.
      (+) LTDC_IT_RR: Register Reload interrupt is generated when the shadow 
                      registers reload was performed during the vertical blanking 
                      period.

Function Documentation

void LTDC_ClearFlag

(

uint32_t

LTDC_FLAG

)

Clears the LTDC's pending flags.

Parameters

LTDC_FLAG

specifies the flag to clear. This parameter can be any combination of the following values: LTDC_FLAG_LI: Line Interrupt flag. LTDC_FLAG_FU: FIFO Underrun Interrupt flag. LTDC_FLAG_TERR: Transfer Error Interrupt flag. LTDC_FLAG_RR: Register Reload interrupt flag.

Return values

None

void LTDC_ClearITPendingBit

(

uint32_t

LTDC_IT

)

Clears the LTDC's interrupt pending bits.

Parameters

LTDC_IT

specifies the interrupt pending bit to clear. This parameter can be any combination of the following values: LTDC_IT_LIE: Line Interrupt. LTDC_IT_FUIE: FIFO Underrun Interrupt. LTDC_IT_TERRIE: Transfer Error Interrupt. LTDC_IT_RRIE: Register Reload interrupt.

Return values

None

FlagStatus LTDC_GetFlagStatus

(

uint32_t

LTDC_FLAG

)

Checks whether the specified LTDC's flag is set or not.

Parameters

LTDC_FLAG

specifies the flag to check. This parameter can be one of the following values: LTDC_FLAG_LI: Line Interrupt flag. LTDC_FLAG_FU: FIFO Underrun Interrupt flag. LTDC_FLAG_TERR: Transfer Error Interrupt flag. LTDC_FLAG_RR: Register Reload interrupt flag.

Return values

The	new state of LTDC_FLAG (SET or RESET).

ITStatus LTDC_GetITStatus

(

uint32_t

LTDC_IT

)

Checks whether the specified LTDC's interrupt has occurred or not.

Parameters

LTDC_IT

specifies the LTDC interrupts sources to check. This parameter can be one of the following values: LTDC_IT_LI: Line Interrupt Enable. LTDC_IT_FU: FIFO Underrun Interrupt Enable. LTDC_IT_TERR: Transfer Error Interrupt Enable. LTDC_IT_RR: Register Reload interrupt Enable.

Return values

The	new state of the LTDC_IT (SET or RESET).

void LTDC_ITConfig	(	uint32_t	LTDC_IT,
		FunctionalState	NewState
	)

Enables or disables the specified LTDC's interrupts.

Parameters

LTDC_IT	specifies the LTDC interrupts sources to be enabled or disabled. This parameter can be any combination of the following values: LTDC_IT_LI: Line Interrupt Enable. LTDC_IT_FU: FIFO Underrun Interrupt Enable. LTDC_IT_TERR: Transfer Error Interrupt Enable. LTDC_IT_RR: Register Reload interrupt enable.
NewState	new state of the specified LTDC interrupts. This parameter can be: ENABLE or DISABLE.

Return values

None