UM1547 datasheet(32/51 Pages) STMICROELECTRONICS

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Other responses

UM1547

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DocID023232 Rev 5

Other responses

The following subsections describe types of responses that occur under specific

circumstances, not necessarily as a result of a specific command. They are:

•

Reset

•

Escape sequence

5.1

Reset

Upon either a hardware reset or software reset (such as the Reset command), ATn FW will

respond as follows after the reset is complete:

AT-AB -CommandMode-

AT-AB BDAddress [BD addr]

Because the BD address of the local device is reported during this response, the response

is different than a response to the Escape Sequence.

5.2

Escape sequence

If the escape sequence, "^#^$^%", is received and no connection is active, ATn FW will

immediately respond with:

AT-AB -CommandMode-

When the escape sequence is received while a connection is still active and there is no data

for 2 seconds, ATn FW will respond (after those 2 seconds of no data) with the same string.

ATn FW will now be in command mode.

5.3

Remote escape sequence

The remote escape sequence, supported by AT2 FW, allows a remote device to enter in a

mode where it can be controlled and configured by a BT link using a local host and

Bluetooth device.

To enable Remote Control the configuration variable RmtEscapeSequence must be set to

true.

The Remote escape sequence is "@#@$@%" and it must be sent by the local host in a

single complete packet over the BT link with no CR or LF in the sequence.

When received, the remote device will respond locally with:

AT-AB RemoteMode.

Note:

If sent digit by digit it will not be recognized by the system.

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