AT commands
UART interface commands
Digi XBee® 3 802.15.4 RF Module User Guide
147
FP (Force Poll)
The
FP
command is deferred until changes are applied. This prevents indirect messages from arriving
at the end device while it is operating in Command mode.
Parameter range
N/A
Default
N/A
UART interface commands
The following commands affect the UART serial interface.
BD (Interface Data Rate)
This command configures the serial interface baud rate for communication between the UART port of
the device and the host. Standard baud rates can be set using a parameter value of 0 - 8.
Non-standard interface data rates
The firmware interprets any value from 0x4B0 through 0x3D090 as an actual baud rate. When the
firmware cannot configure the exact rate specified, it configures the closest approximation to that
rate. For example, to set a rate of 57600 b/s send the following command line:
ATBDE100
. Then, to
find out the closest approximation, send
ATBD
to the console window. It sends back a response of
0xE0D1, which is the closest approximation to 57600 b/s attainable by the hardware.
Note
When using XCTU, you can only set and read non-standard interface data rates using the XCTU
Terminal
tab. You cannot access non-standard rates through the
Modem Configuration
tab.
The following table provides some example
BD
parameters sent versus the parameters stored.
BD parameter sent (HEX)
Interface data rate (b/s)
BD parameter stored (HEX)
0
1200 (standard)
0
4
19,200 (standard)
4
7
115,200 (standard)
7
E100
57,600
E139
1C200
115,200
1C273
Parameter range
Standard baud rates: 0x0 - 0x0A
Non-standard baud rates: 0x12C - 0x0EC400
