topic Re: S32K344 PIT timer callback function not working after SPI send data in S32K

S32K344 PIT timer callback function not working after SPI send data

Steven_Cho — Fri, 15 Mar 2024 01:37:27 GMT

Hi Support Team,

I set a PIT timer to enter the callback function once every 10ms. It base on SW32K3_RTD_4.4_2.0.0.

When I use Lpspi_Ip_SyncTransmit to send 2 bytes, the timer works fine.
But the timer doesn't work after I send 30 bytes using Lpspi_Ip_SyncTransmit.

Can you tell me why this happened?

Thanks

Re: S32K344 PIT timer callback function not working after SPI send data

Senlent — Fri, 15 Mar 2024 03:04:46 GMT

Hi@Steven_Cho

The synchronization operate will block the current thread until the function is executed before continuing other operations, so make sure there is enough time to complete the current transfer.
You can try extending the PIT timing time and then test again

Re: S32K344 PIT timer callback function not working after SPI send data

Steven_Cho — Fri, 15 Mar 2024 05:57:26 GMT

Hi Support Team,

I try to use Pit_Ip_StartChannel to extend 1 sec but still not work.

Should I change spi transmit method to Lpspi_Ip_AsyncTransmit?

If yes, how to use Lpspi_Ip_AsyncTransmit to send data? Could you give me a example?

Thanks

Re: S32K344 PIT timer callback function not working after SPI send data

Senlent — Fri, 15 Mar 2024 06:15:32 GMT

Hi@Steven_Cho

you can sent me your project and i will help you check it.

Re: S32K344 PIT timer callback function not working after SPI send data

Senlent — Fri, 15 Mar 2024 07:03:52 GMT

Hi@Steven_Cho

I made a very simple routine, you can refer to it and test it. I did not have the problem you mentioned.

Re: S32K344 PIT timer callback function not working after SPI send data

Steven_Cho — Fri, 15 Mar 2024 08:01:44 GMT

Hi Support Team,

Because you provide test project is based on RTD 3.0.0, I install it and test your project. It works fine.

Then I retry my project it works fine too without any modification.

Thank you