• State
  • Locked Locked
  • Replies 4 replies
  • Subscribers 17 subscribers
  • Views 116 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CC2662R-Q1: CC2662 Retry

Haejeong Im
Prodigy 90 points
Part Number: CC2662R-Q1

Tool/software: 

Hello, I have a question about the ABSD protocol. 
When CC2662 WM communicates with WD, does it send RETRY data repeatedly?
What this means is that when WM and WD communicate with each other, the RETRY data is duplicated and the data is passed to the MAIN MCU.
The Nodeid is duplicated and the TXCNF_CB command is sent. 
I wonder if such a case exists. 
And does TXCNF_CB accurately transmit and transmit data wirelessly? 
Or is it sent when there is a good response to the data sent?
  • 0
    TI__Intellectual 2100 points

    Hi Haejeong,

    The max retry number is set in command APP_DIAG_SETMAINCONFIG. Network will retry such number of times from mac layer. And TXCNF_CB is the indication for if command is successfully sent(success status) or failure after maximum retry number hit(fail status). The next command should only sent after receiving the TXCNF_CB for the pervious command.

    Best Regards,

    Barbara

  • 0 in reply to Barbara Wu
    Prodigy 90 points

    Thank you for answer. I have more questions.

    • Is the reason for CC2662 performing a RETRY due to not receiving a normal response, or is it because no response is received at all?
    • When CC2662 performs multiple RETRYs, does it send me all the duplicate RESPONSES it received during those RETRYs? 
    • Is there a possibility that TXCNF might not be received?
  • 0 in reply to Haejeong Im
    TI__Intellectual 2100 points

    Hi Haejeong,

    If the response pass the checksum check, then it will be considered as received.

    If multiple retry happens, all responses will be sent to the host even there are duplicate responses.

    TXCNF must be sent from WM to Host, the lost should relates to the Serial Port communication.