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B.3.25. AT+BTKEY=$string
OK
Response
Purpose
Change pin code
Parameters
$string= New pin code (Default="1234")
Description
Pin code is a string, which allows up to 16 alpha-numeric characters. Based on this pin
code, Parani-ESD generates a link key which is used in actual authentication process
Example
AT+BTKEY="apple"
B.3.26. AT+BTSD?
112233445566
Response
OK
Purpose
Display a list of Bluetooth devices sharing the same pin code
Description
Once a connection is made with a pin code, Parani-ESD saves the Bluetooth device with
its link key, generated by the pin code. The connection to a device listed in Parani-ESD can
be made automatically without the authentication process. The maximum number kept on
the list is 7.
B.3.27. AT+BTCSD
OK
Response
Purpose
Clear the list of Bluetooth devices sharing the same pin code
Description
This clears the list of Bluetooth devices linked with the same key in flash memory. To take
effect the ATZ command must be used or Powercycle the unit.
B.3.28. AT+BTFP,n
OK
Response
Purpose
Set generation of link key every time of connection
Parameters
n=0: Inactivate (Default)
n=1: Activate
Description
If n is set to 1, Parani-ESD asks for the pin code every time a connection is made. This can
be used to increase security.
B.3.29. AT+BTSEC,Authentication,Encryption
OK
Response
Purpose
Set authentication and data encryption
Parameters
Authentication=0: Inactivate (Default)
Authentication=1: Activate
Encryption=0: Inactivate (Default)
Encryption=1: Activate
Description
If the authentication is activated, the pin code must be set by AT+BTKEY command. Data
encryption cannot be used when authentication is not enabled, i.e. Authentication=0 and
Encryption=1 will not work properly.
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