Dropped Connections with SP 2.10 from Bluetopia

Morten Braathen

Mastermind 19535 points

Other Parts Discussed in Thread: CC2541, CC2564

I have three modules with the CC2541 radio in server mode. I have one board with the CC2564 radio in client mode. The servers advertise, the client scans, finds and connects to the three servers. The client then commands each server to enable notifications of its measurements. The measurements are 8 byte values sent about every 250ms. This condition, with each server sending its notification on its own schedule, lasts for no more than two minutes before one of the connections drops. The other two will stay connected. The client indicates the reason for the disconnect as HCI_ERROR_CODE_LMP_RESPONSE_TIMEOUT. The connection which drops is always the second one established. If I only connect two servers, there is no problem. If I use an iPhone app to connect to the three servers, there is no problem

This happens with the latest SP 2.10 from the Bluetopia stack

http://processors.wiki.ti.com/index.php/CC256x_Downloads

Please help explain the reason for this behaviour, and how I can resolve it?

LPRF Rocks the World

over 12 years ago

0 Zahid Haq over 12 years ago

TI__Mastermind 25035 points

Hi,

We are looking into this issue. This looks like it can be fixed in the service pack.

0 shawn peng over 11 years ago

Prodigy 80 points

Hi,

I have the same problem, can you find any solutions or some suggestions?

Thank you!

0 Juha O over 11 years ago in reply to shawn peng

Intellectual 610 points

Hi,

I have also the same problem. Is there any fix coming in the future?

-Juha-

0 Sundeep Javvaji over 11 years ago in reply to Juha O

TI__Mastermind 32615 points

Hi All,

This issue should be fixed in the next service pack, which is just around the corner.

0 Sundeep Javvaji over 11 years ago in reply to Sundeep Javvaji

TI__Mastermind 32615 points

Hi All,

The new service pack 2.12, is now available.

Could you please try with the SP 2.12, and let us know if you are still seeing the issue.

0 Juha O over 11 years ago in reply to Sundeep Javvaji

Intellectual 610 points

"Could you please try with the SP 2.12, and let us know if you are still seeing the issue. "

Thanks for new SP. It seems that specially this issue is gone. Anyway we are still having following issues:

- This http://e2e.ti.com/support/low_power_rf/f/660/t/247080.aspx happens still pretty often (about 5 % of connection establishments):

- Sometimes chip can not establish connection at all until it is reseted again. Connection establishments fail to reason 0x3e or 0x08. Reason for this is unknown. This have happened just with one peripheral connection. This is pretty rare issue and we don't know yet how to reproduce this problem.

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Dropped Connections with SP 2.10 from Bluetopia