ST STM32F31xx User Manual

UM1581
Controller area network (bxCAN)
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 CAN_IT_BOF: Bus-off Interrupt; If enabled, this interrupt source is pending when
CAN enters the bus-off state. The bus-off state is entered on TEC overflow,
greater than 255. This Flag is cleared only by hardware.
 CAN_IT_LEC: Last error code Interrupt; If enabled, this interrupt source is
pending when a message has been transferred (reception or transmission) with
error and the error code is hold.
 CAN_IT_ERR: Error Interrupt; If enabled, this interrupt source is pending when
an error condition is pending.
Managing the CAN controller events: The user should identify which mode will be used in
his application to manage the CAN controller events: Polling mode or Interrupt mode.
 In the Polling Mode it is advised to use the following functions:
 CAN_GetFlagStatus() : to check if flags events occur.
 CAN_ClearFlag() : to clear the flags events.
 In the Interrupt Mode it is advised to use the following functions:
 CAN_ITConfig() : to enable or disable the interrupt source.
 CAN_GetITStatus() : to check if Interrupt occurs.
 CAN_ClearITPendingBit() : to clear the Interrupt pending Bit (corresponding
Flag). This function has no impact on CAN_IT_FMP0 and CAN_IT_FMP1
Interrupts pending bits since there are cleared only by hardware.
 CAN_ITConfig()
 CAN_GetFlagStatus()
 CAN_ClearFlag()
 CAN_GetITStatus()
 CAN_ClearITPendingBit()
4.2.8 Initialization and Configuration functions
4.2.8.1 CAN_DeInit
Function Name
void CAN_DeInit ( CAN_TypeDef * CANx)
Function Description
Deinitializes the CAN peripheral registers to their default reset
values.
Parameters
 CANx : where x can be 1 to select the CAN1 peripheral.
Return values
 None.
Notes
 None.
4.2.8.2 CAN_Init
Function Name
uint8_t CAN_Init ( CAN_TypeDef * CANx, CAN_InitTypeDef *
CAN_InitStruct)
Function Description
Initializes the CAN peripheral according to the specified

ST STM32F31xx Specifications

General

Brand	ST
Model	STM32F31xx
Category	Microcontrollers
Language	English