User's Manual

After bonded connection is lost due to any reason, reconnection does to provide
secured link automatically. To secure the connection, another “B” command should
be issued. However, this command is only for securing link other than saving
connection information.
Default: Not bonded
Example: B // bond with connected peer device
3.3.2.4 D
Command “D” is used to display critical information of current device over UART.
Following information will be shown after issuing command “D”.
 Device MAC Address
 Device Name
 Device Connection Role – Central or Peripheral
 Connected Device: Show MAC address and address type (Public or Random) if
connected, or “no” if no active connection.
 Bonded Device: Show MAC address and address type (Public or Random) if
connected, or “no” if no bonding device
 Server Services: Bitmap of services that are supported as server role
Command “D” has no parameter
Example: D // Dump information
3.3.2.5 E,<0,1>,<mac address>
Command “E” is only available to device as central role. It starts the process to
establish connection with a peer peripheral device.
If the central device is already bonded with a peripheral, issuing command “E” will
automatically start the process of connecting with the bonded peripheral. Usually,
bonded central device needs to issue command “E” first and then bonded peripheral
start directed advertisement.
If the central device is not bonded with the peripheral, two input parameters are
required to establish connection with a peripheral device. The first parameter is
MAC address type and second parameter is MAC address of the peripheral device.
MAC address type is either 0 for public address or 1 for random address. The
address type should be available in the result of inquiry with command “F”. The
second parameter is 6 byte MAC address, which is also available from result of
command “F”.