Appendix A: AT Commands
A.1. Terminology
A.1.1. AT Command
AT command set is the
HT
in fact standard
TH
HT
language
TH
for controlling
HT
modems
TH
. The AT command set was
developed by
HT
Hayes
TH
and is recognized by virtually all
HT
personal computer
TH
modems. Parani-SD
provides the extended AT command set to control and configure the serial parameters and Bluetooth
connection.
A.1.2. AT Response
Parani-SD replies to AT commands with 4 kinds of message, ‘OK’, ‘ERROR’, ‘CONNECT’ and
‘DISCONNECT’.
A.1.3. Operation Mode
Mode
Description
Mode0
Waiting for AT commands
Mode1
Attempting to connect the last connected Bluetooth device
Mode2
Waiting for the connection from the last connected Bluetooth device
Mode3
Waiting for the connection from any other Bluetooth device
A.1.4. Operation Status
Status
Description
Standby
Waiting for AT commands
Pending
Executing tasks
Connect
Transmitting data
A.1.5. Security
Security
Description
Authentication
Pin Code (or Pass key)
Encryption
Data encryption
A.1.6. Symbols
The symbols are used for the description of command syntax as follows:
