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How to measure ping time in a P2P network?

ilangesrao
Prodigy 20 points
Other Parts Discussed in Thread: MSP430F2274

Hie,

I'm working on a lab project where I need a mobile node to ping 3 different anchor nodes at given time intervals. I'm not sure on how to measure the ping time using the protocol.Any ideas?

 

  • 0
    TI__Guru 64510 points

    Wouldn't you create a variable that is a ping time, get the current time value just before you send your ping packet and then read the new current time when the response is received?
    I realize that is a very generic statement, but I'm not sure what additional information you need.

  • 0 in reply to BrandonAzbell
    Prodigy 20 points

    Hie, thanks for the reply. Basically, I need a mobile node to ping a stationary node and obtain its ping time(the round trip time).The method is similar when we ping a computer on the network and obtain the time for the data packets to return back to the source. Any sugesstions on how i can do this wiith the Ez430-rf2500.

  • 0 in reply to ilangesrao
    TI__Guru 64510 points

    I would suggest using one of the Timers in the MSP430F2274 to use as a relative timebase for your ping time assessment.  In addition to enabling the timer, you would want to create some additional code to take the timer interrupts and keep a running time in your application.  At that point, your application can call into this "time function" to get a snapshot of time when you send the ping packet.  When you get the response back, call into the "time function" again and perform a comparison.