FiPY can't attach/connect to LTE (T-mobile, Europe)



  • Hi, I'm having trouble making the LTE connection work.

    It starts with:

        +--------------------------+--------------------+
        |            FSM           |        STATE       |
        +--------------------------+--------------------+
        | RRC TOP FSM              |INITIAL             |
        | RRC SEARCH FSM           |INITIAL             |
        | RRC ACTIVE FSM           |NULL                |
        | PMM PLMN FSM             |PARKING             |
        | EMM MAIN FSM             |NULL                |
        | EMM AUTH FSM             |KASME_DEFINED       |
        | EMM CONN FSM             |NULL                |
        | EMM TAU FSM              |NULL                |
        | EMM TEST FSM             |NULL                |
        | ESM BEARER FSM           |BEARER_NULL         |
        | SMS MT FSM               |IDLE                |
        | SMS MO FSM               |IDLE                |
        | HP MAIN FSM              |IDLE                |
        | HP USIM FSM              |READY               |
        | HP SMS MO FSM            |IDLE                |
        | HP SMS MT FSM            |IDLE                |
        | HP CAT FSM               |IDLE                |
        +--------------------------+--------------------+```
    
    Goes to
    
    
    +--------------------------+--------------------+
    |            FSM           |        STATE       |
    +--------------------------+--------------------+
    | RRC TOP FSM              |SCANNING            |
    | RRC SEARCH FSM           |WAIT_RSSI           |
    | RRC ACTIVE FSM           |NULL                |
    | PMM PLMN FSM             |NORM_WAITCELL       |
    | EMM MAIN FSM             |NULL                |
    | EMM AUTH FSM             |KASME_DEFINED       |
    | EMM CONN FSM             |NULL                |
    | EMM TAU FSM              |NULL                |
    | EMM TEST FSM             |NULL                |
    | ESM BEARER FSM           |BEARER_NULL         |
    | SMS MT FSM               |IDLE                |
    | SMS MO FSM               |IDLE                |
    | HP MAIN FSM              |IDLE                |
    | HP USIM FSM              |READY               |
    | HP SMS MO FSM            |IDLE                |
    | HP SMS MT FSM            |IDLE                |
    | HP CAT FSM               |IDLE                |
    +--------------------------+--------------------+```
    

    Then to

        +--------------------------+--------------------+
        |            FSM           |        STATE       |
        +--------------------------+--------------------+
        | RRC TOP FSM              |SCANNING            |
        | RRC SEARCH FSM           |WAIT_CELL_ID        |
        | RRC ACTIVE FSM           |NULL                |
        | PMM PLMN FSM             |NORM_WAITCELL       |
        | EMM MAIN FSM             |NULL                |
        | EMM AUTH FSM             |KASME_DEFINED       |
        | EMM CONN FSM             |NULL                |
        | EMM TAU FSM              |NULL                |
        | EMM TEST FSM             |NULL                |
        | ESM BEARER FSM           |BEARER_NULL         |
        | SMS MT FSM               |IDLE                |
        | SMS MO FSM               |IDLE                |
        | HP MAIN FSM              |IDLE                |
        | HP USIM FSM              |READY               |
        | HP SMS MO FSM            |IDLE                |
        | HP SMS MT FSM            |IDLE                |
        | HP CAT FSM               |IDLE                |
        +--------------------------+--------------------+
    

    And afterwards it loops back to the beggining and does everything again.

    These are my band and apn settings

    lte.attach(band=20, apn="internet.ht.hr")
    

    Does anyone have any idea what is happening?


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