6713 HWI not working

aziz shammas

hi everyone

i have a TMS320C6713 DSK in the LAB, and used CCS3.3 to work with it, now that the computers were upgraded to win7, i had to upgrade to CCS5.5, but i have a problem regarding the HWI.

i copied a project code that was working fine on CCS3.3 (audio app, provided by TI, it simply gets sound in by EDMA to buffer, when EDMA is complete it tigers a HWI, that posts a SWI, then data copied to another buffer, and get out via another EDMA), and then created a TCF file to add all necessary setting for HWI and SWI.

the project is running (indicated by a periodic LED flash), and the 1st EDMA is filling the buffer, but it is not triggering the HWI. I'm not finding the source of the problem, knowing that the code was just copied and pasted, and the TCF file was made the same as the old CDB file in CCS3.3.

note that I'm using BIOS 5.42.1.09 which was provided with CCS 5.5 on download.

i searched for some workshops (found one on 6748) but they never introduced a full example like the one i need, they only introduce the concept.

also i checked the EDMA registers and seems fine:

PQRS 0x00000007

CIPR 0x00000003

CIER 0x00000003

CCER 0x0000C000

ER 0x000010FE

EER 0x0000C000

ECR 0x0000C000

ESR 0x00000000

my question here is why the EDMA is not triggering the HWI? is it in the code or in the TCF file or somewhere else

best regards

over 10 years ago

0 RandyP over 10 years ago

TI__Guru* 84110 points

Aziz,

Which CIPR bit(s) should be set for this EDMA channel?

What are the values in the DSP's IFR and IER registers?

Have you correctly set the MUXL/MUXH registers for mapping the EDMA interrupt to the DSP's interrupt inputs? Which DSP interrupt/HWI are you using for the EDMA interrupt?

The most likely problem is that you are missing something in your TCF file that you had setup correctly in CCSv3.3's DSP/BIOS CDB.

Regards,
RandyP

0 aziz shammas over 10 years ago in reply to RandyP

Intellectual 805 points

thank you for your help, the TCF file was fine, i discovered the error somewhere else (a missing instruction in the main code, that apparently was not necessary in CCS v3.3) but thank you anyways

best regards

0 RandyP over 10 years ago in reply to aziz shammas

TI__Guru* 84110 points

Aziz,

Good job finding the problem. Always a tough job, but well done by you.

If you have a chance, please post here what the particular instruction was that you added, and maybe the initialization code around it. This could be of great help to the next engineer trying to find a similar problem.

Regards,
RandyP

0 aziz shammas over 10 years ago in reply to RandyP

Intellectual 805 points

the missing instructions were:
ICR = (1<<8);
IER = (1<<8);
note that I'm using HWI 8 (so i had to clear and enable HWI in these 2 registers manually, while CCS3.3 was doing it for me)

0 Sivaraj Kuppuraj over 10 years ago in reply to aziz shammas

TI__Mastermind 35645 points

Hi,

Glad that you have fixed the issue.

Thanks for your update.

Thanks & regards,
Sivaraj K

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6713 HWI not working