TMS320F280048C-Q1: DCAN: How is IntPnd cleared, when DIR = write?

Mina Habibi

Prodigy 50 points

Part Number: TMS320F280048C-Q1

Hello experts,

I am using IntPnd to make sure my message has been sent.

When I enable TxIE, IntPnd gets set but how can I clear it for the next message that I am sending?

over 3 years ago

0 Joseph Casuga over 3 years ago

TI__Mastermind 34335 points

Hi Mina,

With successful frame transmission, IntPnd will be set. It will be automatically be cleared when next message is sent and if transmission is a success, then IntPnd will be set again, otherwise it will stay cleared.

Regards,

Joseph

0 Mina Habibi over 3 years ago in reply to Joseph Casuga

Prodigy 50 points

Hi Joseph,

Thank you for the reply.

I have another question: Does IntPnd do the ACK job or does it only say that the message is put on the CAN line successfully? If the latter, how can I find out my message is received by the correct ID?

+1 Joseph Casuga over 3 years ago in reply to Mina Habibi

TI__Mastermind 34335 points

Hi Mina,

ACK is sent by the receiving node when the ID and mask criteria are met. IntPnd will just indicate that the message transmitted successfully with no errors. Refer to this app note (http://www.ti.com/lit/sprace5) for how ACK is sent by the receiving node (page 6). There are also other examples in the application note that may be helpful for you.

Regards,

Joseph

0 Mina Habibi over 3 years ago in reply to Joseph Casuga

Prodigy 50 points

Thank you, Joseph. This helped a lot!

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TMS320F280048C-Q1: DCAN: How is IntPnd cleared, when DIR = write?