Technical information

Chapter 2: AT+i Commands Reference
May 31, 2008 AT+i Commands Reference Manual 2-115
+iBDRM - Define a Fixed Baud Rate on W24<->Modem Connection
+iBDRD - Baud Rate Divider
Syntax: AT+iBDRM=<n>
Sets the baud rate on modem connection. This parameter is saved
to nonvolatile memory and activated after every 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=h Set baud rate to 230400.
Default: 'a' (Auto Baud)
The W24<->modem connection will be set to the same baud rate
as that detected on the host<->W24 connection.
Result Code:
I/OK If n is within limits. The W24 will continue operating in the
current baud rate setting. Further power-up will initialize the baud
rate to the new selected value, until a different AT+iBDRM
command is issued.
I/ERROR Otherwise.
AT+iBDRM? Returns the code for the specified fixed modem baud rate
followed by I/OK.
AT+iBDRM=? Returns the message "3-9, 'a' or 'h'" followed by I/OK.
Syntax: AT+iBDRD=<n>
When set to '0', W24 sets its host USART baud rate according to
the value of the BDRF parameter. When set to any value in the
range 1-255, it divides the maximum supported baud rate -
3Mbps - by that value. The quotient of this division is set as the
host baud rate, and the value of BDRF is ignored.
Parameters:
n=0 Host baud rate is determined by the BDRF parameter.