SENA Promi-ESD02 - Manual (Page 45)

Promi-ESD User Manual – Appendix A AT Commands
A- 7
Copyright © 2006 Sena Technologies, Inc. All rights reserved.
other side Bluetooth device, and any AT command is not
accepted but this command, which is not echoed on the
screen.
When Promi-ESD encounters a character ‘+’ from host, it
stops the data
transmission and waits for next 2
characters. If the next 2 characters aren’t both ‘+’, it
restart to transmit data including the first ‘+’ as well. If
not, it converts the operation status to ‘Standby’.
If the data from host includes ‘+++’, it will convert the
operation status to ‘Standby’ unexpectedly. Notice that
Promi-ESD holds data transmission when it encounters
‘+’, until receiving next character.
‘+’ is an escape sequence character by default, which is
changeable by AT+SETESC.
Reference AT+SETESC, ATO, AT+BTCANCEL
10 AT+SETESC,nn 
Response OK
Purpose Change the escape sequence character
Parameters nn =Decimal number of ASCII code (Default=43)
Description Escape sequence character set to ‘+’ by default is
changeable.
The parameter nn must be a printable character.
Reference +++, ATO
Example AT+SETESC,42
11 ATO

Response None
Purpose Convert the operation status of ‘Standby’ to ‘Connect’
Description You can convert the operation status of ‘Standby’ to
‘Connect’ ready to transmit data.
Reference +++, AT+SETESC
12 AT+BTCANCEL

Response OK