DCAN Peripheral MsgLst bit clearing logic

Pashan

Hello Support,

I am trying to understand how to clear the MsgLst bit in the Message Object for DCAN.

I am assuming that IFx register contains MsgLst bit field. And I should target a particular Message Object with IFx register WRITE Access.

Question is should I set MsgLst bit as 1 or 0 in order to CLEAR/RESET the MsgLst bit of a particular Message Object.

Thank you.

Regards

Pashan

over 14 years ago

0 Pratip Kumar over 14 years ago

TI__Intellectual 2285 points

Pahan,

Yes the IFx Register contains a MsgLst field. Are you trying to configure the Message Object to transmit or to receive ?

Regards,

Pratip

0 Pratip Kumar over 14 years ago in reply to Pratip Kumar

TI__Intellectual 2285 points

Pashan,

If you are trying to configure the message object as transmit you need not bother about MsgLst.

If the message object is configured to receive, the MSGLst is a read only flag .

Regards,

Pratip

0 Pashan over 14 years ago in reply to Pratip Kumar

Intellectual 715 points

Hello Pratip,

Yes, I am configuring the Message Object as Receive Message Object.

If MsgLst bit is read-only for Received Messages, then how does it get cleared?

I mean, under what conditions it will be cleared once set due to lost messages?

Please explain.

Also, it will be helpful if you please refer to the section number of spnu489b.pdf [TRM] for the relevant information related to clearing of MsgLst bit once set due to lost received messages.

Thank you.

Regards

Pashan

0 Pratip Kumar over 14 years ago in reply to Pashan

TI__Intellectual 2285 points

Pashan,

The MsgLst Bit may not automatically reset. You may try writing a 1 to clear it in privilege mode.

Regards,

Pratip

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DCAN Peripheral MsgLst bit clearing logic