Check if the L2CAP channel is ready to receive an SDU. This function checks if the specified L2CAP channel is ready to receive an SDU (Service Data Unit). It can be used to determine if the channel is in a state where it can accept incoming data.
Send an SDU (Service Data Unit) over an L2CAP channel. This function sends an SDU over the specified L2CAP channel. The SDU is encapsulated in L2CAP frames and transmitted to the remote device.
Get information about an L2CAP channel. This function retrieves information about the specified L2CAP channel and populates the provided `ble_l2cap_chan_info` structure with the channel's details.