NDK : sendto has ENOBUFS error

ZRuler ZR

Other Parts Discussed in Thread: TMS320C6748

with NDK on TMS320C6748, I can transmit video stream raw data with UDP to host PC. it can work for about 30 minutes, then the NDK method sendto() reported an error, which err id is 55, the nubmer of ENOBUFS. I reviewed the past posts on e2e, and find it was reported repeatedly. I tune the priority of tasks, add delay between send and recv, all made no progress. so I gave a 1s delay, then have the task turned to next frame, about 40 up to 70 packets of following frame are tranmitted for following every frames. the error persist, but it proved the NDK was still working.

I don't know the reason, and don't know how to debug it.

over 4 years ago

0 ZRuler ZR over 4 years ago

Prodigy 110 points

I use CCS5.5, xdc 3.25.3.72 and ndk_2_20_06_35, nsp_1_10_00_03;

0 Aravind Batni over 4 years ago in reply to ZRuler ZR

TI__Expert 8885 points

Hi ZRuler,

It appears like you are using starterware product, not using the Processor SDK releases for C6748. Can you please confirm?

Please note that the starterware products on C6748 have no support from TI.

Can you rebuild NDK with debug capabilities and possibly have some debug code to identify the issue on why it builds up gradually.

I found below thread on K2G, that customer resolved with correct task priorities.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/814909/rtos-processor-sdk-k2g-enobufs-error-at-ndk_sendto

Thanks

0 ZRuler ZR over 4 years ago in reply to Aravind Batni

Prodigy 110 points

Startware is not used in my application, because ndk needs SYS/BIOS support. I use package bios_c6sdk_02_00_00_00_setupwin32.so that I can make sure the tool is correct. I think the issue comes from NDK

I have read the thread that you mentioned, I said in the last post that I tuned the task priority. but the issue persists. furthermore, in that post, only 128 packets are able to be sent. I can't transmit raw data of pictures in format of 1280x960 for about half an hour.I ever set the priority of tasks in low level, while ndk scheduler task in NC_priority_HIGH. but the sento always brings about ENOBUFS error.

I use CCS5.5, bios_5_42_01_09, xdc 3.25.3.72 and ndk_2_20_06_35, nsp_1_10_00_03;

0 Aravind Batni over 4 years ago in reply to ZRuler ZR

TI__Expert 8885 points

Hi ZRuler,

Here is the latest Processor SDK release for C6748 device. Please note the updated SYS BIOS, XDC and NDK packages in the release.

https://software-dl.ti.com/processor-sdk-rtos/esd/OMAPL138/latest/index_FDS.html

Also,

You can refer to below for rebuilding the NDK with debug mode and identify issues in your application.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/822409/faq-how-do-i-rebuild-ndk-libraries

Hope it helps to debug your issue further.

Thanks

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NDK : sendto has ENOBUFS error