TMS320C6655: C6655 with NDK package too big send interval

Hank Wang

Part Number: TMS320C6655

Dears

We is used in application TMS320C6655 network interface, when use TI provides the NDK package, encounter problems, needs in interval between two send package more than 3-4 ms to normal to send, interval with sleep function implementation, if the interval is lower than 3 ms software program will run to fly, freezes, operation is not normal, but the interval for application is too big, need around 100-200 us, please help to analysis what is the cause of this?Or does the NDK software routine need to be applied in this way?Thank you very much!

over 7 years ago

0 Yordan Kovachev over 7 years ago

TI__Guru**** 161600 points

Which Processor SDK RTOS version is this?

Best Regards,
Yordan

0 lding over 7 years ago in reply to Yordan Kovachev

TI__Guru* 95265 points

Hi,

Please provide the info Yordan asked above. Also, if you used any our NIMU/NDK example as the reference to develop your application? http://software-dl.ti.com/processor-sdk-rtos/esd/docs/latest/rtos/index_Foundational_Components.html#ndk

Those examples you can do some simple ping or TCP, UDP test. And you can see the response time by packet capture. I don't understand the issue you have. What is your requirement for packet send interval and what you experience? Below is a test with C6657 EVM using pdk_c665x_2_0_13\packages\MyExampleProjects\NIMU_emacExampleClient_EVMC6657C66BiosExampleProject. The Windows PC runs the ti\ndk_3_40_01_01\packages\ti\ndk\winapps>send 158.218.116.244.

You can see the IPG is about 20-40 us.

Regards, Eric

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TMS320C6655: C6655 with NDK package too big send interval