OMAP-L137/C6747EVM audio driver does not work with NDK

http://e2e.ti.com/support/dsp/tms320c6000_high_performance_dsps/f/115/p/12467/48821.aspx#48821

I use an evm6747 and I am trying to use both audio and ethernet (helloworld from ndk) at the same time. As seen in http://processors.wiki.ti.com/index.php/Network_Developers_Kit_FAQ#Q:_It_seems_that_the_NSP_for_OMAPL137_EVM_is_incompatible_with_the_EDMA3_LLD._How_can_I_fix_it.3F I modified the void Interrupt_init(void) function so there is no conflict with audio HW interrupts. (I used 5 and 6 for HwRxInt and HwTxInt)

I then added the files evmInit.c, udphello.c, ethdriver.c, and helloworld.c from ndk_2_0_0 and modified the tcf file accordingly (added the hook, the PRD ndk with Ill_TimerTick, etc)

The helloworld example seems to work fine, I can send and receive data from my PC to the board via udp...

but I can't hear any sound from the HP out connector. (supposed to play a sine wave)

Does anyone know how to solve this, I don't see why there should be a conflict between the Audio_echo_task() and the StackTest() and why both can't run simultaneously?

Thank you for your answer,

Best Regards

over 15 years ago

0 clam over 15 years ago

TI__Expert 8785 points

Does the Audio_echo_task() work correctly by itself? Can you check your PINMUX registers to verify that the audio signals are selected?

- Christina

0 JL over 15 years ago in reply to clam

Prodigy 170 points

Hi,

sorry about the delay,

Yes, the Audio_echo_task works correctly by itself, and I was actually able to make both task work simutaneously by using a semaphore, because both tasks use a same variable. However, sometimes only the NdkStackTest works, and I have to do a Debug->Restart once or several times to have both tasks works properly.

I also have another question: the ndk is an evaluation version, what does one have to do to obtain the full version?

Thanks,

Best Regards,

0 JL over 15 years ago in reply to JL

Prodigy 170 points

I also changed the priority of the ndkStackTest to 1 and of the Audio_echo_task to 15

0 tlee over 15 years ago in reply to JL

TI__Guru 62975 points

JL,

The NDK licensing is explained here: http://processors.wiki.ti.com/index.php?title=Network_Developers_Kit_Licensing_and_Availability

The NDK package can be found here: http://focus.ti.com/docs/toolsw/folders/print/ndktcpip.html

The C6748 architecture is very similar to C6747 so you can grab the C6748 NDK here: http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/omap_l138/1_00/latest/index_FDS.html

-Tommy

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OMAP-L137/C6747EVM audio driver does not work with NDK