topic Re: FreeRTOS LPSPI in S32K

FreeRTOS LPSPI

fancycang — Tue, 14 Nov 2023 06:33:23 GMT

hi everyone

After I added the FreeRTOS module, there were issues with my LPSPI transmission,What is the reason for this?

I perform SPI transmission on external Flash, and the code can run normally without FreeRTOS. When FreeRTOS is added, the code will make an error at the command being transmitted.Why?

Re: FreeRTOS LPSPI

PetrS — Tue, 14 Nov 2023 13:41:55 GMT

Hi,

did you try to initialize LPSPI driver within some init task after scheduler is started?

BR, Petr

Re: FreeRTOS LPSPI

fancycang — Wed, 15 Nov 2023 01:09:55 GMT

Hi Petr

I did not initialize LPSPI in task scheduling, just like SDK v4.0 freertos_s32k144 demo use prvSetupHardware() function Initialize LPSPI .Start SPI communication after initialization, using LPSPI_ DRV_ The MasterTransferBlocking function will report an error.

My phenomenon is that after adding the freertos module, my SPI transfer function will directly report an error.

Best Reagrds

Re: FreeRTOS LPSPI

PetrS — Wed, 15 Nov 2023 11:28:50 GMT

Hi,

you should call init and send functions from task after scheduler is started.

BR, Petr

Re: FreeRTOS LPSPI

fancycang — Thu, 16 Nov 2023 06:47:13 GMT

Hi Petr

Thank you for your reply. I seem to have found the cause of the problem, The SemaWait() function was called in the LPSPI_DRV_MasterTransferBlocking() function.When the freertos module was not added, this function exists in osif_baremetal. c. However, after adding freertos, it will jump to osif_ Freertos. c, this may be the reason why the function cannot run, but I haven't found a solution yet. Do you have any ideas?

Best Regards

Re: FreeRTOS LPSPI

PetrS — Tue, 21 Nov 2023 14:42:22 GMT

Hi,

what about to increase heap size in FreeRTOS component?
Or share simplified project showing an issue.

BR, Petr

Re: FreeRTOS LPSPI

fancycang — Wed, 22 Nov 2023 00:58:47 GMT

Hi petr

Thank you for your answer. I have solved this problem and can only achieve SPI transmission in task scheduling.

Beat Regards