CCS/CC2640R2F: Сonnection interval update

Heinrich Hertz

Part Number: CC2640R2F

Tool/software: Code Composer Studio

Hi, I'm using the multi_role project, SDK ver. 3.10.0.15. I have no sniffer. I connect the phone to the board and request to update the connection interval. Under the debugger, I never go to GAP_UPDATE_LINK_PARAM_REQ_EVENT and, accordingly, to multi_role_paramUpdateDecisionCB. But at the same time, the interval is updated (getting to GAP_LINK_PARAM_UPDATE_EVENT and reading pEvent-> linkUpdate.status = SUCCESS).

Why the event GAP_UPDATE_LINK_PARAM_REQ_EVENT is not occurring ?

What you need to change in the code to get into the callback multi_role_paramUpdateDecisionCB ?

over 5 years ago

0 J Lindh over 5 years ago

TI__Guru 57865 points

Hi Heinrich,

Assigning an expert to help you.

0 Marie H over 5 years ago

TI__Guru* 81261 points

Hi Heinrich,

Are you sure the peer device is sending a param update request, not just a connection update command? (Do you have a sniffer log?)

Can you try setting a break point in the GAPRole task (multi.c), for the GAP_UPDATE_LINK_PARAM_REQ_EVENT ?

0 Heinrich Hertz over 5 years ago in reply to Marie H

Intellectual 760 points

Hi Marie H,

Have you read my post? (second and fourth sentence).

In GAP_LINK_PARAM_UPDATE_EVENT, I read pEvent-> linkUpdate.connInterval and the parameters are updated.

But once again I repeat, I never get into the GAUP _UPDATE_LINK_PARAM_REQ_EVENT under the debugger.

0 Marie H over 5 years ago in reply to Heinrich Hertz

TI__Guru* 81261 points

Hi Heinrich,

You can try lowering the optimization, please see

Can you post a sniffer log of this happening?

0 Heinrich Hertz over 5 years ago in reply to Marie H

Intellectual 760 points

Hi Marie!

I at the time of the description of the problem already used optimization.

And I don’t have a sniffer.

0 Marie H over 5 years ago in reply to Heinrich Hertz

TI__Guru* 81261 points

Hi Heinrich,

If you have a CC13x2 or CC26x2 LaunchPad you can use it as a packet sniffer:

I am not able to reproduce the bahavior you're describing. I suspect the master device sends a connection update packet instead of going through the connection parameter update request procedure.

0 Marie H over 5 years ago in reply to Heinrich Hertz

TI__Guru* 81261 points

Hi Heinrich,

Did you figure it out?

I will close this thread due to inactivity.

0 Heinrich Hertz over 5 years ago in reply to Marie H

Intellectual 760 points

Hi Marie,

I unfortunately do not have CC13x2 or CC26x2 LaunchPad. I tried using two LaunchPads (сс2640r2f). Both had a multi-role project. One, I tried to change the connection interval with the function mr_doConnUpdate. And I still couldn’t get into GAP_UPDATE_LINK_PARAM_REQ_EVENT.

0 Marie H over 5 years ago in reply to Heinrich Hertz

TI__Guru* 81261 points

Hi Heinrich,

Did you define USE_LL_CONN_PARAM_UPDATE in your project?

0 Heinrich Hertz over 5 years ago in reply to Marie H

Intellectual 760 points

Hi Marie,

Can you tell me more about this define? If you ask about new connection parameters, they are indicated the new structure.

gapRole_updateConnParams_t updateNewParams =
{
  .connHandle = INVALID_CONNHANDLE,
  .minConnInterval = 100,
  .maxConnInterval = 100,
  .slaveLatency = 0,
  .timeoutMultiplier = 200
};

0 Marie H over 5 years ago in reply to Heinrich Hertz

TI__Guru* 81261 points

Hi Heinrich,

If you search for USE_LL_CONN_PARAM_UPDATE in multi_role.c you can see that if this is not defined, LL_FEATURE_CONN_PARAMS_REQ is removed from the LL supported feature set. This means that any param update request will go through the L2CAP process, not the LL process.

If USE_LL_CONN_PARAM_UPDATE is defined the device will support LL_FEATURE_CONN_PARAMS_REQ and it can be used for connection param updates.

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CCS/CC2640R2F: Сonnection interval update