DAT_copy problem

Mahdi SAKKA

Other Parts Discussed in Thread: TMS320C6416, CCSTUDIO

Hi there,

I'm new member in this forum and I'm also a new user of DSPs, Im using a TMS320C6416 DSK for an image processing application, I wanted to use the DAT_copy to transfert a linear bloc of memory from a place to another, but I didn't obtain any changes, I did like following :

DAT_open(DAT_CHAANY,DAT_PRI_High,0);

DAT_copy(in,out,100);

DAT_close();

where in and out are two pointers.

When debugging my source code, I didn't mention any changes or pherhaps there's changes but I got random numbers in memory pointed by out pointer.

I really need help, I no longer have enough time to achieve my project.

Sincerely,

over 16 years ago

0 rodiovanni over 16 years ago

Prodigy 130 points

Hi Mahdi,

well when you use DAT methods you have to use the DAT_wait, like that

Uint32 transferId;

DAT_open(DAT_CHAANY, DAT_PRI_LOW, 0);

transferId = DAT_copy(src,dst,len);

/* user DAT configuration */
DAT_wait(transferId);

You can close DAT only after the DAT_wait finish.

Furthermore, if you have to perform lot of DAT_copy open the DAT module only once and close it only at the end of the program since open and close involve some overhead.

Hope this helps,

Giovanni

0 Mahdi SAKKA over 16 years ago in reply to rodiovanni

Prodigy 120 points

Hi,

Thank you for responding. I used DAT_wait(transfertId) but nothing changes the problem still persists. Could you give me a complete tutorial showing the use of this module. Thank you.

0 Mariana over 16 years ago in reply to Mahdi SAKKA

TI__Mastermind 24340 points

The function DAT_copy is described in this document:

http://focus.ti.com/dsp/docs/dspsupporttechdocsc.tsp?sectionId=3&tabId=409&familyId=132&abstractName=spru401j

I found an examples using DAT_copy, but no for C6416... so you would need to adapt the project.

You can find it at:

C:\CCStudio_v3.3\examples\dsk6211\csl\dat\dat1_useBios

Or you can attach a simple test case that runs in the DSK...

0 Mahdi SAKKA over 16 years ago in reply to Mariana

Prodigy 120 points

Thank you so much I will try to adapt it to my DSK and I'll let you know the result to help other users [:)]

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DAT_copy problem