TCAN4550-Q1: TCAN4550 Send Complete Interrupt

zhao wenlong

Prodigy 60 points

Part Number: TCAN4550-Q1
Other Parts Discussed in Thread: TCAN4550

Hello, how can I generate the TCAN4550 SendComplete Interrupt? Is there any demo code to reference.

over 4 years ago

0 Eric Schott1 over 4 years ago

TI__Guru 53575 points

Hi Zhao,

The MCAN interrupt register contains a bit that describes when a transmission is completed (h0824 [9]): TC. This flag may be polled through SPI or tied to an interrupt line that maps to a GPO to indicate when the controller has completed a transmission.

While the demo code from the device's store page does not contain dedicated functions for line interrupt configuration, all relevant registers are included in the TCAN4x5x_Reg,h header file and may be used by other read/write access functions.

Let me know if you have any more questions.

Regards,
Eric Schott

0 zhao wenlong over 4 years ago in reply to Eric Schott1

Prodigy 60 points

Hi Eric:

my board don't have GPO1/2 to external MCU,. whether could I get the TC state through nINT port or not? (nINT is a global Interrupt port as the datasheet descriped below)

and how to recognize which message transmit complete? is there a mark? how to use the TX Event FIFO? is there any reference code for the Transmit Complete operation.

0 Eric Schott1 over 4 years ago in reply to zhao wenlong

TI__Guru 53575 points

Hi Zhao,

I'm looking into this and will get back to you with more info tomorrow.

Regards,
Eric Schott

0 Eric Schott1 over 4 years ago in reply to Eric Schott1

TI__Guru 53575 points

Hi Zhao,

Our Systems team is running some tests on this for me. Thanks for your patience. I'll give you a update tomorrow.

Regards,
Eric Schott

0 zhao wenlong over 4 years ago in reply to Eric Schott1

Prodigy 60 points

Thanks for your feedback.

0 Eric Hackett over 4 years ago in reply to zhao wenlong

TI__Guru 74322 points

Zhao,

Thanks for your patience, we are still looking into this.

Regards,

Eric Hackett

+1 Eric Schott1 over 4 years ago in reply to Eric Hackett

TI__Guru 53575 points

Hi Zhao,

Thanks for your patience here.

To get an indication when a TX message is successfully sent, the Transmission Complete (TC) flag in the MCAN interrupt register (h1050) may be used. This interrupt must be enabled in the MCAN Interrupt Enable register (h1054) and the TX Buffer Transmission Interrupt Enable register (h10E0) must be configured to indicate the completion. With these registers configured, a successful buffer transmission will be indicated on the nINT pin to reflect the state of the TC interrupt flag in the MCAN interrupt register.

Let me know if this is sufficient information for your needs or if I can elaborate any further on the requirements.

Regards,
Eric Schott

0 zhao wenlong over 4 years ago in reply to Eric Schott1

Prodigy 60 points

thank you, the h1050 register is more important. now it can work well.

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TCAN4550-Q1: TCAN4550 Send Complete Interrupt