Ezurio BISM2 Guide de l'utilisateur télécharger pdf (Page 6)

escape sequence guard time is specified by S Register 12 and is the same as per the ^^^

escape sequence. By default the guard time is set to 100 milliseconds. The remote device

issues ATO as normal to return to data mode. (Refer to 2.2.12)

For this command to be effective S Register 536 must be set to 1.

Response: <cr,lf>OK<cr,lf>

2.2.3 AT

Used to check the module is available.

Response: <cr,lf>OK<cr,lf>

2.2.4 ATA {Answer Call}

Accept an incoming connection, which is indicated by the unsolicited string

<cr,lf>RING 123456789012<cr,lf> every second. 123456789012 is the Bluetooth

address of the connecting device.

Response: <cr,lf>CONNECT 123456789012<cr,lf>

2.2.5 ATD<U><Y><bd_addr>,<uuid> {Make Outgoing Connection}

Make a connection to device with Bluetooth address <bd_addr> and profile <uuid>. The

<uuid> is an optional parameter which specifies the UUID of the profile server to attach

to, and if not supplied then the default UUID from S Register 101 is used. As this is a

EZURiO device which utilises the RFCOMM layer as described in the Bluetooth specification,

it necessarily implies that only profiles based on RFCOMM can be accessed.

If <U> is not specified, then authentication is as per register 500, otherwise the

connection will be authenticated.

If <Y> is not specified, then encryption is as per register 501, otherwise the connection

will have encryption enabled.

The timeout is specified by S register 505.

Response: <cr,lf>CONNECT 123456789012<cr,lf>

Or <cr,lf>NO CARRIER<cr,lf>

Due to a known issue in the Bluetooth RFCOMM stack, it is not possible to make more than

65525 outgoing connections. Therefore if that number is exceeded, then the connection

attempt will fail with the following response:-

Response: <cr,lf>CALL LIMIT

Or <cr,lf>NO CARRIER<cr,lf>

In that case, issuing an ATZ to reset the device will reset the count to 0 and more

connections are possible.

The following RFCOMM based UUIDs are defined in the Bluetooth Specification:-

Profile Name UUID

Serial Port 1101

LAN Access Using PPP 1102

Dialup Networking 1103

IrMC Sync 1104

OBEX Object Push 1105

OBEX File Transfer 1106

IrMC Sync Command 1107

Headset 1108

Cordless Telephony 1109

Intercom 1110

DSH_50003_v1v3 AT Command Reference 6 of 33

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Ezurio BISM2 Guide de l'utilisateur Page 6

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