topic Re: S32K344 SENT communication through interrupt in S32K

S32K344 SENT communication through interrupt

Rmpr — Tue, 10 Dec 2024 16:36:28 GMT

Hello,

I am trying to communicate with a sensor through SENT protocol via interrupt mode. I'm using RTD's with the following configuration:

The interrupt is defined and when debugging it enters inside the interrupt handler. But I can't seem to figure out how to actually get the message data. I'm using the following function

Flexio_Sent_Ip_IrqHandler

But it's not working. What am I doing wrong?

Thank you

Re: S32K344 SENT communication through interrupt

nxp52415 — Thu, 12 Dec 2024 12:24:12 GMT

Hello Mrs. Rodrigues,

I am writing you because the ticket you created to us.

Could you please check if following function is being called? That should be the one processing the message buffer.

void Flexio_Sent_Ip_IRQMsgDataHandler(const uint8 Instance, const uint8 HwChannel, uint32 TimerVal)

The buffer pointed by this pointer should contain the received messages:

Flexio_Sent_Ip_axFastData

Re: S32K344 SENT communication through interrupt

nxp52415 — Thu, 12 Dec 2024 12:24:35 GMT

Hello Hector,

Yes that function is being called. Our problem seems to be in the Flexio_Sent_Ip_StartTransfer function, it enters the STATUS_SEBT_FAST_IDLE case and always fails the PulseWidthTick.

Re: S32K344 SENT communication through interrupt

nxp52415 — Thu, 12 Dec 2024 12:25:06 GMT

Hello Rita,

Thank for your feedback.

May you try to enable Expanding range mode?

#define FLEXIO_SENT_IP_EXPANDING_RANGE_MODE (STD_ON)