User's Manual

Promi-ESD User Manual – Appendix A AT Commands

A-10

Reference AT+BTINQ?, AT+BTSCAN

Example ATD000B530011FF

17 ATH

Response OK

DISCONNECT

Purpose Release the current connection

Description The current Bluetooth connection is released normally. It

takes about 30 seconds to detect an abnormal

disconnection such as power off and moving out of service

range.

Reference ATD, AT+BTSCAN

18 AT+BTKEY=$string

Response OK

Purpose Change pin code

Parameters

$string

= New pin code (Default=”1234”)

Description Pin code is a string, which allows 16 alpha-numeric

characters maximum. Based on this pin code, Promi-SD

generates a link key which is used in actual authentication

process.

Reference AT+BTCSD, AT+BTFP, AT+BTSD?, AT+BTSEC, ATZ,

AT&F

Example AT+BTKEY=”apple”

19 AT+BTSD? 

Response 112233445566

OK

Purpose Display the list of Bluetooth devices sharing the pin code

Description Once a connection is made with pin code, Promi-SD saves

the Bluetooth device with its link key generated by pin

code. The connection to a device listed in Promi-SD can

be made automatically without authentication process.

The maximum number of the list is 5.

Reference AT+BTCSD, AT+BTFP, AT+BTKEY, AT+BTSEC, ATZ,