KSDK 1.0.0: Bug report in fsl_edma_driver.c - Periodic Trigger Mode

[mauricelauze]

Hello,

I have been trying to use DAC - DMA with PIT trigger mode and I've found an issue with it.

In function :

edma_status_t EDMA_DRV_ClaimChannel(uint8_t channel, dma_request_source_t source, edma_chn_state_t *chn)

it is not possible to set the periodic trigger mode using PIT.

That is, DMAMUX_CHCFGn[TRIG] is never set, whatever the source selected for DMA (kDmaRequestMux0AlwaysOn63)

I fixed it with the following workaround, which is very bad but give the PIT trigger functionality available :

if (source> kDmaRequestMux0AlwaysOn60)

    {

        DMAMUX_HAL_SetPeriodTriggerCmd(dmamuxRegBase, dmamuxChannel, true);

    }

Hope this helps,

Maurice

[jeremyzhou]

Hi Maurice,

Thanks for sharing this bug issue, I'll contact with the SDK tech supporter to focus on the issue and update you ASAP after check.
Have a great day,
Ping

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[edwinrim]

Did you ever find out if this is the actual issue? I am having the same problem with my project

[ivadorazinova]

Hi edwinrim,

please do you use the latest KSDK version? I mean KSDK 1.3 ?

Thank you.

Best Regards,

Iva

[edwinrim]

I am using v 1.2