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CC3200: have 'iStatus=SL_EAGAIN' issue

user5195153
Intellectual 450 points
Part Number: CC3200

Dears,

we use CC3200 to make WIFI,need continuous long time transfer data,0.5Mbyte/s.

but have high error probability,more the time get 'iStatus=SL_EAGAIN' when send data failed.

Pls help to give some suggestion.

  • 0
    Guru 79905 points
    Hi,

    In case of non-blcoking sockets are used, return code SL_EAGAIN is normal. In case of this error code is returned, you need to wait moment and repeat send command.

    Jan
  • 0
    TI__Mastermind 22935 points
    Hello,

    Perhaps adding a delay between sends prevents try again errors?

    Jesu
  • 0 in reply to Jesu
    Intellectual 450 points

    Dear all,

    When appear 'iStatus=SL_EAGAIN', delay to resend,It will be sent successfully in the end.

    But the there are more and more time to appear this mistake,High probability!

    this make the the data transmission rate is slow.

  • 0 in reply to user5195153
    Guru 79905 points
    Hi,

    According my experiences is probability of returning SL_EAGAIN from socket send API increased in case of poor RF environment. That means:
    - far distance from AP
    - interferences from other 2.4GHz RF devices

    You should to measure RSSI from both sides (CC3200 device and AP side). According RSSI and possible outages of RSSI you can do assumption of link quality. In case own hardware with CC3200 is used, you can have a issue with RF design as well.

    Jan