CAN CANMessageSet problem

Hi 

I have some problems with configuring the can mailboxes properly. I am able to successfully receive CAN messages in general. Some configurations, however, do not seem to work properly.

E.g. if I want to allow all messages of standard ID type (11 bit identifier) - without considering the value of the identifier field.

Simplified example of how i try to configure mailbox 1 to receive ALL messages with a 11 bit identifier:

*********************************************************************************************
/* Init CAN */
ROM_CANInit( CAN0_BASE );

/* Set the bit rate */
ROM_CANBitRateSet( CAN0_BASE, ROM_SysCtlClockGet(), 250000 );

/* Enable CAN */
ROM_CANEnable( CAN0_BASE );

/* Configure a CAN mailbox */
tCANMsgObject canMsgObj;

/* Clear all flags */
canMsgObj.ui32Flags = MSG_OBJ_NO_FLAGS;

/* Enable RX interrupt */
canMsgObj.ui32Flags |= MSG_OBJ_RX_INT_ENABLE;

/* Configure mailbox */
ROM_CANMessageSet( CAN0_BASE, 1, &canMsgObj, MSG_OBJ_TYPE_RX );

*********************************************************************************************

With the above code no messages get through to mailbox 1. However, If I enable filtering:

canMsgObj.ui32Flags |= MSG_OBJ_USE_ID_FILTER;
canMsgObj.ui32MsgID = 0x1;
canMsgObj.ui32MsgIDMask = 0x1;

then it works perfectly fine, and I receive only 11bit messages with ID = 1;

Is it not allowed to configure a mailbox without filtering (without setting MSG_OBJ_USE_ID_FILTER)?

I have also tried to enabled filtering and setting the mask to mask out all bits, like this:

canMsgObj.ui32Flags |= MSG_OBJ_USE_ID_FILTER;
canMsgObj.ui32MsgID = 0x00;
canMsgObj.ui32MsgIDMask = 0x00;

this, however, enables ALL messages of both standard and extended type - which is not what I want.

I am using a TM4C1233D5PMI on a custom board. As you see, I am using the tivaware in ROM. I have, however, also tried the non-ROM versions from tivaware v. 2.1.0.12573. Additionally I am using CCS v6 with TI C compiler v5.1.6.

I will appreciate any help you can provide.

BR
Christian