BTM410/411
Bluetooth
®
AT Data Module
53
www.lairdtech.com
Laird Technologies
APPENDIX
Register
Deflt.
Range
Description
S531
0
0..4
Specifies the mode on connection establishment.
0 = Normal, that data is exchanged between UART and RF
1 = LOCAL_COMMAND. UART input is parsed by the AT
interpreter and RF data is discarded
2 = REMOTE_COMMAND. RF input is parsed by the AT
interpreter and UART data is discarded. If S Register 536 is not
1 then this register cannot be set to 2 and an ERROR will be
returned
3 = LOCAL_COMMAND. UART input is parsed by the AT
interpreter and incoming RF data is sent to the host using the
RX<string> asynchronous response.
4 = LOCAL_COMMAND and on the rf side, the GPIO is
automatically sent when there is a change in input. (digital I/O
cable replacement mode)
S532
0
0..7
If non zero then on every connection, a SCO channel (audio)
will be initiated. Bit 0 for HV1, Bit1 for HV2 and Bit2 for HV3.
When the connection is lost, the SCO channel disappears along
with it.
S535
20
0..41
Link Supervision Timeout. If units go out of range, then a NO
CARRIER message will be sent to the host after the time
specified here
S536
0
0..1
When set to 1, a remote device can ‘capture’ the AT parser of
this unit by it sending this module an escape “!!!” sequence.
The inter character timing is set via S Register 12.
If S Register 507 is >= 2, then reading this register will always
return 0 and writing 1 will result in ERROR 33.
S539
0
0..1
When set to 1, in idle mode (S512=1), UART Rx characters are
discarded if DSR is de-asserted.
S541
20
-43..20
This sets the power level in dBm when inquiring or paging.
Reading this register returns the value stored in non-volatile
memory.
S542
4
-43..20
As per S541, however reading this register returns the current
power level as set in the base band. The read can be different
from S541because the actual power is set using a lookup table
and the base band rounds down to the nearest value in the
table.
Summary of Contents for BTM410
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