User's Manual

Table Of Contents
Nonvolatile Parameter Database
AT+i Programmer‘s Manual Version 8.32 34-18
34.3.10 +iBDRF Define A Fixed Baud Rate on Host Connection
Syntax:
AT+iBDRF=<n>
Sets the baud rate on host serial connection. This
parameter is saved to nonvolatile memory and activated
only after power-up.
Parameters:
n=3..9|‗a‘|‗h‘
Command Options:
n=a
set baud rate to Auto Baud
n=3
set baud rate to 2400
n=4
set baud rate to 4800
n=5
set baud rate to 9600
n=6
set baud rate to 19200
n=7
set baud rate to 38400
n=8
set baud rate to 57600
n=9
set baud rate to 115200
n=h
set baud rate to 230400
When BDRF is set to a, iChip boots in auto baud rate
mode. In this mode, iChip synchronizes on the first a or
A character sent (normally as part of an AT or AT+i
command) and detect its baud rate. The detected baud
rate remains in effect until the iChip is power-cycled or
issued the AT+iBDRA command.
If BDRF is set to a fixed value and the MSEL signal is
pulled low for more than 5 seconds during runtime,
iChip enters Rescue mode and forces auto baud rate
detection. BDRF value will be used again upon the next
power-up.
Default:
‗a‘ (Auto Baud)
Result Code:
I/OK
If n is within limits. iChip will continue operating in the
current baud rate setting. Further power-ups will
initialize the baud rate to the new selected value, until a
different AT+iBDRF command is issued.
I/ERROR
Otherwise
AT+iBDRF?
Returns the code for the specified fixed baud rate
followed by I/OK.
AT+iBDRF=?
Returns the message ―3-9, ‗a‘ or ‗h‘‖ followed by I/OK.