EDMA3 Problem

Moses Muhoro Mbugua

Other Parts Discussed in Thread: TMS320C6678

Been trying to transfer some data from FPGA to internal memory with no success.

I can see that the DSP accesess the fpga through emif but no data is transfered. Direct access works though. What am I doing wrong.

I have attached my program.

EdmaFPGA.zip

over 9 years ago

0 Raja over 9 years ago

TI__Guru* 81335 points

Hi Moses,

Welcome to the TI E2E forum. I hope you will find many good answers here and in the TI.com documents and in the TI Wiki Pages (for processor issues). Be sure to search those for helpful information and to browse for the questions others may have asked on similar topics (e2e.ti.com).

Please provide below information to support.

1. DSP Part number.

2. EVM or Custom Board.

3. Packages used and its version(CCS, MCSDK etc)

Thank you.

0 Moses Muhoro Mbugua over 9 years ago in reply to Raja

Prodigy 40 points

Thank you for your quick reply.

I am using TMS320C6678 Evaluation Module with

CSS Version: 5.5.0.00077

MCSDK PDK Version 1.1.2.5

SYS/BIOS Version 6.33.6.50

XDCTools Version 3.25.3.72

0 Pubesh over 9 years ago in reply to Moses Muhoro Mbugua

TI__Mastermind 20790 points

Hi,

Take a look the section "Setting Up a Transfer" in the keystone EDMA3 controller user guide. I will check your zip file. Please mention your error when transfer using EDMA.

0 Moses Muhoro Mbugua over 9 years ago in reply to Pubesh

Prodigy 40 points

Once again thank you for your comments/reply.

The problem is that when I trigger the EDMA, I can confirm that the EMIF is actually accessed, but when I check the data transfered nothing is there. But when I access the EMIF directly, the data is read successfully. So I am just wondering if its my EDMA setup or there is another problem.

0 Pubesh over 9 years ago in reply to Moses Muhoro Mbugua

TI__Mastermind 20790 points

Hi,

I have checked your code for EDMA setup, It seems ok. But can you double check with edma_test.c file, which is available in the CSL folder under the PDK package.

0 Pubesh over 9 years ago in reply to Pubesh

TI__Mastermind 20790 points

Hi,

Why you have set CSL_EDMA3_TCINT_DIS instead of CSL_EDMA3_TCINT_EN ?

0 Moses Muhoro Mbugua over 9 years ago in reply to Pubesh

Prodigy 40 points

Hi,

Since I don't really need the Transfer completion interrupt, I disable it. I am doing some other calculation and I am sure that the transfer should complete when I need to use the data.

0 Pubesh over 9 years ago in reply to Moses Muhoro Mbugua

TI__Mastermind 20790 points

Hi,

Did you validate or compared with edma_test.c file other that transfer completion interrupt part of code?

Is there any error return message when get failed?

0 FENG SUN57683 over 9 years ago in reply to Moses Muhoro Mbugua

Intellectual 895 points

how did you check whether the data was transfered, had you considered cache issues?

0 Raja over 9 years ago in reply to FENG SUN57683

TI__Guru* 81335 points

Hi Feng,

Thank you for your contribution to e2e.

0 RandyP over 9 years ago in reply to Raja

TI__Guru* 84110 points

Moses,

Are you done and got your problem figured out? Please post your solution, if you solved it.

Feng hopefully pointed you to that solution, but it would be nice to confirm it, please.

If you need to debug you program:

1. Change TCINT to EN so you can see something to confirm the transfer happened. Otherwise, change STATIC to DIS.
2. Set breakpoints at the calls to EdmaRead and EdmaWrite.
3. Run to the first one and look at your EDMA3 PARAM in a memory browser window.
4. What are the hex values of the Src and Dst register values?
5. Run to the next breakpoint and look at your IPR bit or PARAM, depending on what you did in step 1.

What can you confirm that ran?

Regards,
RandyP

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EDMA3 Problem