BTM410/411
Bluetooth
®
AT Data Module
17
www.lairdtech.com
Laird Technologies
AT COMMAND SET
REFERENCE
3.
ATSn=?
{Read S Register – Valid Range}
This will return the valid range of values for register n.
For recognized values of n
Response:
<cr,lf>Sn:(nnnn..mmmm)<cr,lf>OK<cr,lf>
For unrecognized values of n
Response:
<cr,lf>ERROR nn<cr,lf>
4.
AT&Fn
{Set S Register Defaults}
This command will only work when the device is in local command and unconnected mode.
Depending on the value of ‘n’ it installs S Register values appropriate for various power modes,
ranging from minimum power consumption to maximum.
Legal values of ‘n’ are as per the following table. All other values of n will generate a syntax error
response. If ‘n’ is not specified then a default value of 0 is assumed where the baud rate is NOT
changed.
&F0 (Default)
Medium power consumption, UART baud rate unchanged
&F1
Minimum power consumption, UART baud rate set to 9600
&F2
Minimum power consumption, UART baud rate set to 38400
&F3
Minimum power consumption, UART baud rate set to 115200
&F4
Medium power consumption, UART baud rate set to 115200
&F5
Maximum power consumption, UART baud rate set to 115200
The new values are NOT updated in non-volatile memory until the AT&W command is sent to the
device.
Response:
<cr,lf>OK<cr,lf>
Or
Response:
<cr,lf>ERROR nn<cr,lf>
5.
AT&F*
{Clear Non-volatile Memory}
The AT&F* variant of the command installs values in S registers as per command AT&F4 and then all
other user parameters in non-volatile memory are erased. This means that the trusted device
database is cleared, and so are parameters related to the following commands: AT+BTR, AT+BTN,
AT+BTS.
Response:
<cr,lf>OK<cr,lf>
Or
Response:
<cr,lf>ERROR nn<cr,lf>
6.
AT&F+
{Clear Non-volatile Memory}
This command erases all user parameters in non-volatile memory except S Registers 520 to 525.
This means that the trusted device database is cleared, and so are parameters related to the
following commands: AT+BTR, AT+BTN, AT+BTS.
Response:
<cr,lf>OK<cr,lf>
Or
Response:
<cr,lf>ERROR nn<cr,lf>
Summary of Contents for BTM410
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