Controller Area Network (CAN)
6. Call this function with ui32ObjID set to one of the 32 object buffers.
Example: To receive a specific data frame, take the following steps:
1. Set eMsgObjType to MSG_OBJ_TYPE_RX.
2. Set pMsgObject->ui32MsgID to the full message ID, or a partial mask to use partial ID
matching.
3. Set pMsgObject->ui32MsgIDMask bits that should be used for masking during compari-
son.
4. Set pMsgObject->ui32Flags as follows:
Set MSG_OBJ_RX_INT_ENABLE flag to be interrupted when the data frame is re-
ceived.
Set MSG_OBJ_USE_ID_FILTER flag to enable identifier based filtering.
5. Set pMsgObject->ui32MsgLen to the number of bytes in the expected data frame.
6. The buffer pointed to by pMsgObject->pucMsgData is not used by this call as no data is
present at the time of the call.
7. Call this function with ui32ObjID set to one of the 32 object buffers.
If you specify a message object buffer that already contains a message definition, it is overwrit-
ten.
Returns:
None.
6.2.1.15 ROM_CANRetryGet
Returns the current setting for automatic retransmission.
Prototype:
bool
ROM_CANRetryGet(uint32_t ui32Base)
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_CANTABLE is an array of pointers located at ROM_APITABLE[18].
ROM_CANRetryGet is a function pointer located at ROM_CANTABLE[13].
Parameters:
ui32Base is the base address of the CAN controller.
Description:
Reads the current setting for the automatic retransmission in the CAN controller and returns it
to the caller.
Returns:
Returns true if automatic retransmission is enabled, false otherwise.
6.2.1.16 ROM_CANRetrySet
Sets the CAN controller automatic retransmission behavior.
April 8, 2013 65
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