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CHANGING RATE SENDING PACKETS CC3200

LUCA ROSSINI
Expert 1990 points
Other Parts Discussed in Thread: CC3200

Hi to everybody ,

I am working with the cc3200 launch board xl.. I am sending udp packets using wifi- direct from a board to a smartphone and then the smartphone forward again to a pc ( using wifi traditional)
Normally when I want to send UDP packets with different rate I add a delay after each packet..

1) Is there a function to set the transmitting rate ??

2) I am evaluating the performances.. In case that the performances are bad , I would like to modify the transmitting rate ( for example I would like to increase the distance between packets , so I would like to reduce the transmitting rate ).
It is possible to do this when the board is working ??
I thought to send some message from the smartphone or from the pc to change this parameters ( for example sending rate).
It is possible to do this when the board is working ? maybe with this message I can reload the information for the sending function..

I hope that somebody can help me..

Best Regards

Luca Rossini

  • 0
    TI__Guru* 85400 points
    Hi,

    Please see: sl_SetSockOpt()/ SL_SO_PHY_RATE in the Simplelink API documentation

    Regards,
    Gigi Joseph.
  • 0 in reply to Joseph Gigi
    TI__Mastermind 18455 points
    Hi Luca,

    Regarding your 2nd question.
    You can't change the transmit rate while being connected to an AP. please note that you really don't need to touch this area at al.
    The CC3200 MAC later is implementing a rate adaptation algorithm internally which is already tweaked for best performance.

    If you have a specific problem or use case you are trying to solve, please let us know and we can try to help you out with it.

    Thanks,
    Alon
  • 0 in reply to Alon Srednizki
    Expert 1990 points

    Hi Alon ,

    1)I am using Wifi-Direct.. I want to evaluate the link performance using the loss packet information or the jitter.. In case the performances are bad , I would like to increment the distance between each packets ( decrease the transmitting rate).
    You are saying that the board does this in automatic ?
    Have I understood well ?

    On the previous answer Joseph said that there is SL_SO_PHY_RATE to change the rate.. If what you say it is correct I don't need to change this.

    2) is it a mistake if I use a delay instead using the function to change the rate ??

    Thanks a lot

    Best Regards

    Luca

  • 0 in reply to LUCA ROSSINI
    Expert 1990 points

    Hi Alon ,

    What do you think about my questions ??

     Best Regards

            Luca 

  • 0 in reply to Alon Srednizki
    Expert 1990 points

    How does the rate adaptation algorithm function ?
    What are the reasons to change the transmitting rate ? Distance ? losses ? channel overloading ?

    best Regards

    Luca