Chengdu Ebyte Electronic Technology Co., Ltd
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co., Ltd
8
disconnected
falling edge
7
LINK
Output
Link status
Ble link
：
low level
No ble link
：
high level
8
DATA
Output
Data indicator
-
9
GND
-
Ground
-
10
P0.02
-
NC
-
11
P0.03
-
NC
-
12
P0.04
-
NC
-
13
P0.05
-
NC
-
14
P0.06
-
NC
-
15
P0.07
-
NC
-
16
GND
-
Ground
Ground
17
VCC
-
Power
Power
18
RXD
Input
UART RX pin
-
19
TXD
Output
UART TX pin
-
20
RTS
Output
Flow control
Internal pull up
21
CTS
Input
Flow control
Internal pull up
22
P0.21/RST
-
Power reset
Valid in low level
23
SWDCLK
-
-
-
24
SWDIO
-
-
-
4. Function
4.1 Roles
There are three roles: master, slave, and observer.
The master module connects to other Ebyte Bluetooth models. Up to 4 slaves can be connected to it. Transparent advertising and
format transmission are available. Both manual and automatic connection are allowed.
The slave module connects to other Ebyte Bluetooth models, only one connection is allowed. Only transparent transmission is
available for slave.
The observer is only used to print information about the ble device around the module and cannot be connected.
4.1.1 Master
1.
AT+ROLE=1 choose role as master;
2.
AT+SCAN=1 master scanning started;
3.
AT+AUTOCONN
configure if it is automatically connected after power on
；
4.
Once in manual connection
，
AT+CONN
configure to connect specific device
；
5.
One master and multiple slave connection is available. Maximum connected slave quantity is 4;
3
引脚内部电平自锁存。为电平时，内部上拉，为低电平，内部下拉。
4
Same to 3.
