4
3.
Detailed description
3.1
Pinout
Grove connector has four wires: GND, VCC, RX, and TX.
3.2
Features of Design
We have used TD6810 chip as the voltage regulator, so the range of the supply power can be 3.3v to 5v.
Also, there's a level shift circuit which make sure the accuracy of data transmission.
3.3
AT Commands
1
）
Query module address
Send
：
AT+ADDR?
Receive
：
OK+LADD: address
2
）
Query baud rate
Send
：
AT+BAUD?
Receive
：
OK+Get:[para1]
Range
：
0~8 ; 0--9600
，
1--19200
，
2--38400
，
3--57600
，
4--115200
，
5--4800
，
6--2400
，
7--1200
，
8--
230400
。
Default: 0--9600.
Set baud rate
Send
：
AT+BAUD[para1]
Receive
：
OK+Set:[para1]
e.g.
：
Send
：
AT+BAUD1
，
Receive
：
OK+Set:1. The Baud rate has been set to 19200
。
Note: If setup to Value 7, After next power on, module will not support any AT Commands, until PIO0 is
pressed, Module will change Baud to 9600.
3
）
Try connect an address
Send
：
AT+CON[para1]
Receive
：
OK+CONN[para2]
Range
：
A,E,F
e.g.
：
Try to connect an device which MAC address is 00:17:EA:09:09:09
Send: AT+CON0017EA090909
May receive a reply: OK+CONNA --> Accept request, connecting ; OK+CONNE --> Connect error ; OK+CONN
--> Connected , if AT+NOTI1 is setup ; OK+CONNF --> Connect Failed , After 10 seconds
