MQX for KSDK: lwevent makes errror no_one_to_run

[menkooldewurtel]

Hello,

with KDS2.0.0 and KSDK1.1.0. MQX for KSDK configured with PE for FRDMK64F.

In a init-function I create a  event, witch is defined in a global header-file:

...

     result = _lwevent_create(&sampleStateEvent, 1); //Event auto clear

...

There is one ISR (every 4096µs) for DMA Complete:

PE_IST(DMA0_IRQHandler)

{

     _mqx_uint result=MQX_OK;

     DMA_CINT = (uint8_t)0x00; //Clear DONE and INT flags

     result = _lwevent_set(&sampleStateEvent, (uint32_t) 2);

     DMA_ERQ =(uint32_t) 0x3; //start DMA Channel 0 and 1 again

}

In an Task I want to wait for the Event with:

....                                                    

     result = _lwevent_wait_ticks(&sampleStateEvent, (uint32_t) 2, TRUE,0);

....

For the first pass of the wait command the Task waits till the event is set by the ISR.

Next pass MQX crashs:  ASM_LABEL(no_one_to_run)

Any idea whats my Mistake?

Thanks!

Menko

[RadekS]

From my point of view it looks like some problem where lwevent didn’t exist in case of second loop.

Could you please check whether you call _lwevent_destroy somewhere between first and second _lwevent_wait_ticks?

It is possible that you somehow rewrite lwevent structure or kernel data by DMA transfer?

I hope it helps you.

Have a great day,
RadekS

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