1.10.3.16 CANx_CallbackRegister Function
C
The prototype of CANx_CallbackRegister() varies based on device family. Refer to the generated header file for the actual prototype to be used.
void CANx_CallbackRegister(CAN_CALLBACK callback, uintptr_t contextHandle, uint8_t fifoNum) // x - Instance of the CAN peripheral void CANx_CallbackRegister(CANFD_CALLBACK callback, uintptr_t contextHandle, uint8_t fifoQueueNum) // x - Instance of the CAN peripheral
Summary
Sets the pointer to the function (and it's context) to be called when the given CAN's transfer events occur.
Description
This routine sets the pointer to the function (and it's context) to be called when the given CAN's transfer events occur.
Precondition
CANx_Initialize must have been called for the associated CAN instance.
Parameters
| Param | Description |
|---|---|
| callback | A pointer to a function with a calling signature definedby the callback data type. |
| contextHandle | A value (usually a pointer) passed (unused) into the functionidentified by the callback parameter. |
| fifoNum | Tx/Rx FIFO number |
| fifoQueueNum | Tx Queue or Tx/Rx FIFO number |
Returns
None.
Example
void APP_CAN_Callback (uintptr_t context)
{
}
CAN1_CallbackRegister( APP_CAN_Callback, (uintptr_t)APP_STATE_CAN_TRANSMIT, 0 );
CAN1_MessageTransmit(messageID, messageLength, message, 0, CAN_MSG_TX_DATA_FRAME);
CAN1_CallbackRegister( APP_CAN_Callback, (uintptr_t)APP_STATE_CAN_RECEIVE, 1 );
CAN1_MessageReceive(&rx_messageID, &rx_messageLength, rx_message, ×tamp, 1);
void APP_CAN_Callback (uintptr_t context)
{
}
CAN1_CallbackRegister( APP_CAN_Callback, (uintptr_t)APP_STATE_CAN_TRANSMIT, 1 );
CAN1_MessageTransmit(messageID, messageLength, message, 1, CANFD_MODE_FD_WITH_BRS, CANFD_MSG_TX_DATA_FRAME);
CAN1_CallbackRegister( APP_CAN_Callback, (uintptr_t)APP_STATE_CAN_RECEIVE, 2 );
CAN1_MessageReceive(&rx_messageID, &rx_messageLength, rx_message, ×tamp, 2, &msgAttr);
Remarks
None.