Ezurio BISM2 Guide de l'utilisateur télécharger pdf (Page 25)

If the device is not in idle mode then

Response: <cr,lf>4

<cr,lf>OK<cr,lf>

and in this case, the command AT+BTX may put the device into the correct idle mode.

2.2.58 AT+BTW<bd_addr> {Initiate Pairing}

This initiates pairing with a device whose Bluetooth address is <bd_addr>. An OK response

is sent and when the PIN is required, asynchronous indications will be sent to the host in

the form PIN? <bd_addr> where the address confirms the device with which the pairing

is to be performed. To supply a PIN, use the AT+BTK command.

For a successful pairing, the link key is stored in a volatile cache which is overwritten every

time a new pairing is initiated using this command. The link key can be stored in a non-

volatile database within the device. The list of trusted devices is managed using commands

AT+BTT?, AT+BTT and AT+BTD. The AT+BTT? command produces a list of trusted

Bluetooth addresses (link key is NEVER displayed) and AT+BTT is used to store the cached

link key. The command AT+BTD123456789012 is used to remove the specified device

from the database.

The “OK” response is sent immediately on receipt of the AT+BTW command. On pairing

completion, an unsolicited message will be sent to the host which will be in the form PAIR

n <bd_addr>. See section 3.7 for more details.

If AT+BTI or AT+BTP or AT+BTG or AT+BTQ or ATD is issued between the AT+BTW

command and the subsequence PAIR asynchronous response, then an ERROR response will

be sent to those commands as the device is not in a mode from where such commands

can be actioned.

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

2.2.59 AT+BTW? {List Cached Trusted Device}

This command is used to list the cached trusted device.

Response: <cr,lf>12346789012

<cr,lf>OK<cr,lf>

If the cache is empty the response is as follows.

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

2.2.60 AT+BTX {Disable Page/Inquiry Scanning}

Disable page/inquiry scanning. This means it will not accept incoming connections or

inquiry requests. In fact this negates the effect of AT+BTQ, AT+BTG and AT+BTP

commands.

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

DSH_50003_v1v3 AT Command Reference 25 of 33

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Ezurio BISM2 Guide de l'utilisateur Page 25