Bluetooth: L2CAP Shell - Zephyr

Bluetooth: L2CAP Shell ######################

The :code:l2cap command exposes parts of the L2CAP API. The following example shows how to register a LE PSM, connect to it from another device and send 3 packets of 14 octets each.

The example assumes that the two devices are already connected.

On device A, register the LE PSM:

.. code-block:: console

    uart:~$ l2cap register 29
    L2CAP psm 41 sec_level 1 registered

On device B, connect to the registered LE PSM and send data:

.. code-block:: console

    uart:~$ l2cap connect 29
    Chan sec: 1
    L2CAP connection pending
    Channel 0x20000210 connected
    Channel 0x20000210 status 1
    uart:~$ l2cap send 3 14
    Rem 2
    Rem 1
    Rem 0
    Outgoing data channel 0x20000210 transmitted
    Outgoing data channel 0x20000210 transmitted
    Outgoing data channel 0x20000210 transmitted

On device A, you should have received the data:

.. code-block:: console

    Incoming conn 0x20002398
    Channel 0x20000210 status 1
    Channel 0x20000210 connected
    Channel 0x20000210 requires buffer
    Incoming data channel 0x20000210 len 14
    00000000: ff ff ff ff ff ff ff ff  ff ff ff ff ff ff       |........ ......  |
    Channel 0x20000210 requires buffer
    Incoming data channel 0x20000210 len 14
    00000000: ff ff ff ff ff ff ff ff  ff ff ff ff ff ff       |........ ......  |
    Channel 0x20000210 requires buffer
    Incoming data channel 0x20000210 len 14
    00000000: ff ff ff ff ff ff ff ff  ff ff ff ff ff ff       |........ ......  |