CC2640R2F:One peripheral device connects to multiple central devices

규영 배

Part Number: CC2640R2F

Hello, I have a question about multi-peripheral.


1.Can multiple central devices be connected to one peripheral device?


SDK: simplelink_cc2640r2_sdk_5_30_00_03 , multirole

over 1 year ago

0 규영 배 over 1 year ago

Prodigy 180 points

8 connections must be possible

This is for reference only.

#define MAX_NUM_BLE_CONNS 3 → #define MAX_NUM_BLE_CONNS 8 ( ll_config.h )

I wonder if it is right to change this part.

0 Jan over 1 year ago in reply to 규영 배

TI__Mastermind 42100 points

Hi,

Yes, it is possible for a peripheral to be connected to multiple centrals. You will need to increase the max number of connections and keep the device advertising.

Best Regards,

Jan

0 규영 배 over 1 year ago in reply to Jan

Prodigy 180 points

Thanks for your reply
As you said, do you have any references for maintaining device advertising?

An additional problem is that when a peripheral device is connected to two central devices, advertising stops and scanning is not possible.

0 Jan over 1 year ago in reply to 규영 배

TI__Mastermind 42100 points

Hi,

The multirole example should continue to advertise if the numbmer of connections formed is less than the value specified in the maxNumBleConns vairable. By default, this is equal to MAX_NUM_BLE_CONNS (which resolves to 3). Has this been modified?

Best Regards,

Jan

0 규영 배 over 1 year ago in reply to Jan

Prodigy 180 points

Tested after modifying MAX_NUM_BLE_CONNS 8 in ll.config.h.

When 2 or more objects are connected, 1 object is disconnected.

+1 Jan over 1 year ago in reply to 규영 배

TI__Mastermind 42100 points

Hi,

The unmodified multirole project should allow multiple connections. Have you made any modifications to the project? Can you test on the latest SDK as well?

Best Regards,

Jan

0 규영 배 over 1 year ago in reply to Jan

Prodigy 180 points

hi
Can you tell me the part that allows multiple connections?

+1 Jan over 1 year ago in reply to 규영 배

TI__Mastermind 42100 points

Hi,

After a connection is established, the following code snippet is what determines if the advertisements should remain on or turn off.

As you can see, this depends on the value of maxNumBleConns and the current number of active connections.

Best Regards,

Jan

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CC2640R2F:One peripheral device connects to multiple central devices