Gpy Lte RCC TOP FSM -> CONNETTED but never reach ...attached!



  • Hello guys,
    I have a strange behavior on my Gpy lte.attach() function. After a while the gpy result with this FSM table (...that seem nice :) ):

    +--------------------------+--------------------+
    |            FSM           |        STATE       |
    +--------------------------+--------------------+
    | RRC TOP FSM              |CONNECTED           |
    | RRC SEARCH FSM           |CAMPED              |
    | RRC ACTIVE FSM           |CONNECTED           |
    | PMM PLMN FSM             |NORM_CAMPED         |
    | EMM MAIN FSM             |NULL                |
    | EMM AUTH FSM             |NULL                |
    | EMM CONN FSM             |EMM_DETACHED        |
    | EMM TAU FSM              |NULL                |
    | EMM TEST FSM             |NULL                |
    | ESM BEARER FSM           |BEARER_NULL         |
    | SMS MT FSM               |IDLE                |
    | SMS MO FSM               |IDLE                |
    | LPP FSM                  |IDLE                |
    | HP MAIN FSM              |IDLE                |
    | HP USIM FSM              |READY               |
    | HP SMS MO FSM            |IDLE                |
    | HP SMS MT FSM            |IDLE                |
    | HP CAT FSM               |IDLE                |
    +--------------------------+--------------------+
    

    but the next FSM table shows | RRC TOP FSM DISCONNECTING| and it never reaches the "...attached!" state.
    What I notice is that the EMM MAIN FSM and EMM AUTH FSM are both NULL.
    Any idea on what could it be??

    Thank you very much in advance!!
    Ciao!



  • Dear Mattia,

    I hope you are doing alright.

    Have you checked out HERE?

    Have a nice one,

    KR,

    Yusuf BAYLAV

    Solutions Architect Evangelist [at] pycom


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