Chengdu Ebyte Electronic Technology Co., Ltd.
E104-BT20 User Manual
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Copyright ©2012–2020, Chengdu Ebyte Electronic Technology Co., Ltd.
7
5.3 MAC address binding
The AT + ROLE = 1 command sets the module to the master working role. AT + CMODE = 0 sets the connection mode
to the specified Bluetooth address connection. AT + BIND = [MAC] binds the MAC address. When the module is
powered on again, it will try to connect to this address until it succeeds. After disconnecting, it will not initiate a
connection. Do not set the bound Bluetooth address to zero which is invalid.
5.4 Status Printing
When Bluetooth is connected or disconnected, the module status information is printed through the serial port, as shown
in the following table.
Status
Printed Information
Connection On
+CONNECTED:SUCCESS OK
Connection off
+DISC:SUCCESS OK- Disconnection
5.5 IO Pins
In order to facilitate users to expand the IO port pin functions of the module and diversify the module functions, this
module has a total of 8 IOs. Users can configure IO as universal input or output. The output pin can be configured as an
output low level or an output high level, and the input pin can be configured as a pull-up or pull-down; please refer to
Chapter 6 AT command “AT + PIO”, “AT + MPIO”, “AT + PII "," AT + MPII ", etc.
5.6 Data Transceiving
At
baud rate of 115200bps/s or 460800bps/s, the module supports serial port to send 200K files continuously without
packet loss.
6. AT Command
6.1 Default Parameters:
Default Parameters
Equipment name
E104-BT20
version number
Ebyte.com V1.0
Check Digit
NONE
Stop bit
1
Baud rate
9600
MAC binding address
00:00:00:00:00:00
Pairing code
1234
Bluetooth role
Slave
