Connecting to a particular to a particular mac_address in BLE Central

Sid Saxena

I was trying to compare the scan ble_address of peripheral to the particular address I wanted to connect. but it didn't work . Is there any other way to accomplish it ?

over 10 years ago

0 YiKai Chen over 10 years ago

Guru 735685 points

If you use SimpleBLECentral example, you can do this in simpleBLECentralEventCB.

0 JXS over 10 years ago

TI__Guru** 105180 points

Hello,

You can also connect directly to a specific BD ADDR or load the BD ADDR into the white list (WL), then initiate a connection to the WL.

Best wishes

0 Sid Saxena over 10 years ago in reply to JXS

Expert 1530 points

Hi tried adding the BL_ADDR to the white list using the following function but it doesn't seem to work. It gives the error #10234-D:unresolved symbols remian

I am using the following function to add the device add to the WL.

bStatus_t GAP_AddWhiteList() {

return LE_Add_Device_To_White_List(0x00, 0x20CD39856D0D);

}

will this work or else can you direct me in a particular direction.

0 Gustavo Litovsky over 10 years ago

Intellectual 495 points

Sid,

It's important you take into account the fact that the MAC address in BLE can be of several types, either IEEE or a "random" fixed or dynamic.
Therefore, using the MAC address solely can fail since the peripheral can change the address if privacy features are enabled.

During pairing the right keys are exchanged that allow you to resolve uniquely the device (even when address changes). This is what should be used.

0 Sid Saxena over 10 years ago in reply to Gustavo Litovsky

Expert 1530 points

Gustavo,

I am working with the MAC Address of the peripheral because its fixed in my case and won't change.

0 Gustavo Litovsky over 10 years ago in reply to Sid Saxena

Intellectual 495 points

Great.

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Connecting to a particular to a particular mac_address in BLE Central