ST STM32F31xx - Page 125

UM1581
Controller area network (bxCAN)
DocID023800 Rev 1
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4.2.13.4 CAN_GetITStatus
Function Name
ITStatus CAN_GetITStatus ( CAN_TypeDef * CANx, uint32_t
CAN_IT)
Function Description
Checks whether the specified CANx interrupt has occurred or not.
Parameters
 CANx : where x can be 1 or 2 to to select the CAN
peripheral.
 CAN_IT : specifies the CAN interrupt source to check. This
parameter can be one of the following values:
 CAN_IT_TME : Transmit mailbox empty Interrupt
 CAN_IT_FMP0 : FIFO 0 message pending Interrupt
 CAN_IT_FF0 : FIFO 0 full Interrupt
 CAN_IT_FOV0 : FIFO 0 overrun Interrupt
 CAN_IT_FMP1 : FIFO 1 message pending Interrupt
 CAN_IT_FF1 : FIFO 1 full Interrupt
 CAN_IT_FOV1 : FIFO 1 overrun Interrupt
 CAN_IT_WKU : Wake-up Interrupt
 CAN_IT_SLK : Sleep acknowledge Interrupt
 CAN_IT_EWG : Error warning Interrupt
 CAN_IT_EPV : Error passive Interrupt
 CAN_IT_BOF : Bus-off Interrupt
 CAN_IT_LEC : Last error code Interrupt
 CAN_IT_ERR : Error Interrupt
Return values
 The current state of CAN_IT (SET or RESET).
Notes
 None.
4.2.13.5 CAN_ClearITPendingBit
Function Name
void CAN_ClearITPendingBit ( CAN_TypeDef * CANx, uint32_t
CAN_IT)
Function Description
Clears the CANx's interrupt pending bits.
Parameters
 CANx : where x can be 1 or 2 to to select the CAN
peripheral.
 CAN_IT : specifies the interrupt pending bit to clear. This
parameter can be one of the following values:
 CAN_IT_TME : Transmit mailbox empty Interrupt
 CAN_IT_FF0 : FIFO 0 full Interrupt
 CAN_IT_FOV0 : FIFO 0 overrun Interrupt
 CAN_IT_FF1 : FIFO 1 full Interrupt
 CAN_IT_FOV1 : FIFO 1 overrun Interrupt
 CAN_IT_WKU : Wake-up Interrupt