EDMA3_DRV_create() updating EDMACC0DSP

barry mohan

Intellectual 580 points

Other Parts Discussed in Thread: OMAPL138

Hi All

Am I missing something simple here ? We have integrated the PSP EDMA3 driver on our OMAPL138 using CCS4.

Our main routine first calls edmaInit() (which is taken from •bios_edma3_drv_sample_init_multi_edma.c).

This initialises the globalConfig{} structure as follows

globalConfig = &sampleEdma3GblCfgParams[edma3Id]; (This is taken from bios_edma3_drv_sample_omapl138_cfg.c)

The driver is then created with

edma3Result = EDMA3_DRV_create (edma3Id, globalConfig ,
(void *)&miscParam);

I presume this should configure the EDMACC0DSP registers.

With emulator attached in CCS (view->Registers) I examine EDMACC0DSP however none of the registers are configured with the globalConfig{} structure (same looking directly at the memory).

Any sugestions appreciated.

Barry

over 14 years ago

0 Mukul Bhatnagar over 14 years ago

TI__Guru* 86125 points

I moved your query to BIOS forum, assuming this is an EDMA3LLD query. Please also make sure you are enabling the clocks to the CC/TCs via software or GEL file etc.

Regards

Mukul

0 Prasad Konnur over 14 years ago in reply to Mukul Bhatnagar

TI__Expert 6065 points

Barry,

Please make sure you are checking the registers corresponding to EDMA instance passed to driver in edma3Id.

To find the global region registers modified in the EDMA3_DRV_create() refer to the function edma3GlobalRegionInit() in rm/src/edma3resmgr.c

also which register value are you checking and which register do you mean by EDMACC0DSP?

Regards,
Prasad

0 barry mohan over 14 years ago in reply to Prasad Konnur

Intellectual 580 points

Hi Prasad

Thanks for getting back on this. It was related to an error in the documentation and resolved here

http://e2e.ti.com/support/dsp/omap_applications_processors/f/42/t/152315.aspx#552097

Barry

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EDMA3_DRV_create() updating EDMACC0DSP