BlueMod+B20/BT2.1
User Guide
Release r03 www.stollmann.de Page 7 of 38
2.1.5 Initiate Bluetooth Link
To set up a connection from the BlueMod+B20 to a remote HID host, the ATD
command is used with the profile identifier HID as described in the example below:
Connect to Bluetooth device 0080371443AB using the remote service
profile HID
Note: The firmware does not initiate an automatic reconnect, so reconnects have
to be done manually by sending an “ATD” command triggered by the controller, or
by the HID host application.
2.1.6 Incoming HID Connection
If a HID host initiates a connection to the BlueMod+B20 a RING event is generated
in the AT interface. If extended result codes are enabled (ATW1), the event gives
information about Bluetooth address of the initiating device, UUID and profile.
RING·000461851832·1124·HID¶
2.1.7 HID Data Flow Control
During a HID connection the BlueMod+B20 supports the serial hardware flow
control (RTS/CTS). Please note to control the serial status line “UART_RTS“
(pin 24) of the BlueMod+B20 module in case of an active flow control situation.
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