User's Manual

Command set A T + V E R ? CR
Ascii set
0x41 0x54 0x2B 0x56 0x45 0x52 0x3F 0x0D
E.g.) NOTIFY - when the preparation is completed after the application of the power:
+READY
Command +READY
Command set + R E A D Y CR
ASCII set 0x2B 0x52 0x45 0x41 0x44 0x59 0x0D
E.g.) RESPONSE – Requested operation failed: +ERROR
Command +ERROR
Command set + E R R O R CR
ASCII set 0x2B 0x45 0x52 0x52 0x4F 0x52 0x0D
1.2. Default Protocol Operation
• The BT transmits a corresponding RESPONSE after receiving a REQUEST
from the HOST. The HOST may basically expect RESPONSE to +OK or
+ERROR and receive a specific RESPONSE corresponding to REQUEST.
1.3. Description of UART operation modes
• With respect to the DATA of the HOST transmitted to UART, the BT supports
two modes of the AT-COMMAND mode, when connection is not made with
remote device, and the BYPASS mode, when connection is made with the
remote device.
1.3.1 AT-COMMAND mode
There is a situation where an order can be given to change the device
settings of the BT or make the BT perform a specific operation in the HOST,
which is called the AT- COMMAND mode.
The BT always maintains the AT-COMMAND mode if connection is not
made with Remote device.
Most of this document is to describe commands available in the AT-COMMAND mode.