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3. S
C
ERIAL
OMMANDS
The Radio Bridge modules utilize the UART serial port for communicating payload data between
modules and for configuration of the modules themselves.
The serial port runs with these default settings.
Name
Baud Rate
Stop Bits
Parity
The baud rate can be changed using the BD AT command as defined in the AT Commands section.
All values through the serial command interface are coded as ASCII characters. In other words,
the hex value 0x12 would be coded as the ASCII string "12" which allows for convenient control
through a terminal emulator. Host processors communicating to the module through a UART
must convert values to ASCII-coded values.
3.1. Commands to the Module
Every command to the module starts with the ASCII characters "AT" which stand for
"attention" as shown in the following command structure.
"AT" Prefix
2 bytes
These "AT" commands are defined in
3.2. Messages from the Module
The messages from the device do not have an "AT" prefix but have the following structure.
Message Type
3 bytes
The message types are one of the following ASCII-coded values:
C
© 2017, R
OPYRIGHT
ADIO
Table 5 Port Default Settings
Table 6 Command Structure
ASCII Command Parameters (if necessary)
2 bytes
Table 7 Message Structure
Space 0x20
1 byte
B
I
.
RIDGE
NC
R
ADIO
Default Setting
9600
1
None
0-n bytes
AT Command Reference
Message
Carriage Return 0x0D
2-n bytes
1 byte
R
B
RBM101
ADIO
RIDGE
B
RBM101
U
RIDGE
I
SER
Carriage Return 0x0D
1 byte
section.
U
G
P
6
I
SER
UIDE
AGE
G
UIDE
19
OF
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