■ INTRODUCTION
BT-1011 Bluetooth UART Module is a serial port Bluetooth module which with 2.54mm connector, the module have onboard 3.3V LDO and link indication LED, user will be very easy to use it in the application.
■ FEATURES
l Operation voltage from 3.3V to 5.5V
l Bluetooth 2.1+EDR compliant
l Support up to 3Mbps high speed UART interface
l Support AT Command
■ Pin out
Description
| |||
1
|
CFG
|
I
|
Mode config pin:
0 = AT CMD Mode
1 = NORMAL Mode(Default)
|
2
|
RXD
|
I
|
UART RX , TTL-3.3V
|
3
|
TXD
|
O
|
UART TX , TTL-3.3V
|
4
|
GND
|
P
|
Ground
|
5
|
VCC
|
P
|
Power supply (3.3~5.5V)
|
6
|
---
|
---
|
N.U
|
7
|
---
|
---
|
N.U
|
8
|
---
|
---
|
N.U
|
9
|
---
|
---
|
N.U
|
10
|
---
|
---
|
N.U
|
Please notice:
1， Default baud rate: 9600bps
2， Pin code: 1234
■ AT Command
AT Command use fixed setting “9600,n,8,1”
All AT command with end character “\r\n”
No.
|
Function
|
Command
|
Parameter
|
Return
|
1
|
Test
|
AT
|
OK
|
None
|
2
|
Inquire BT Address
|
AT+LADDR
|
+LADDR = <PARA1>
|
<PARA1>: Local BT Add
|
3
|
Inquire Baud rate
|
AT+BAUD
|
+BAUD = <PARA1>
|
<PARA1>: Baud rate
|
4
|
Set Baud rate
|
AT+BAUD<PARA1>
|
1, +BAUD = <PARA1>
OK = Set Baud rate succeed
2, <ERROR_CODE> = Failed
|
0=2400 , 1=4800 , 2=9600 ,3=19200 , 4=38400 , 5=57600 , 6=115200 , 7=230400 ,8=460800 , 9=921600
|
■ ERROR CODE:
SAVE FAIL: failed to save setting PARA INVALID: invalided parameter
READ FAIL: failed to reading UNKNOW: unknow error
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