Problem with DSPLINK (readwrite sample) and EDMA

Jone Joniee

I am working with EVMOMAPL137. I want to customize the readwrite sample that use DSPLINK. I write a program on DSP side that use EDMA. If I configure and use the EDMA before DSPLINK initialization all things are OK. However, when I want to set source, destination, and indexes for EDMA after DSPLINK init the driver functions are returned with error and EDMA is not work. What is the problem? I think DSPLINK initialization has effect on EDMA configuration. What I should do?????

over 9 years ago

0 Sivaraj Kuppuraj over 9 years ago

TI__Mastermind 35645 points

Hi,

Thanks for your post.

In my opinion, DSPLink doesn't include EDMA3 driver and it doesn't use EDMA3 hardware too. So there should be no clash between these two.

Moreover, would it be possible for you to use the latest EDMA3 driver 01.11.00.03 which can be downloaded from the below:

http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/edma3_lld/edma3-lld-bios5/01_11_00_03/index_FDS.html

Does edma3init() dynamically plug any interrupts? Incase, is it trashing an interrupt already setup in your tcf file or by dsplink.

Some useful TI wikis on DSPLINK

http://processors.wiki.ti.com/index.php/Troubleshooting_DSPLink_configuration_issues

http://processors.wiki.ti.com/index.php/DSPLink_POOL_FAQs

http://processors.wiki.ti.com/index.php/DSPLink_FAQs

You can also refer to http://processors.wiki.ti.com/index.php/EDMA_sample_test_application for help.

Thanks & regards,

Sivaraj K

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Problem with DSPLINK (readwrite sample) and EDMA