RTOS/CC2640R2F: Connection timeout duration

GOHM ELECTRONICS

Expert 2085 points

Part Number: CC2640R2F

Tool/software: TI-RTOS

Hello,

I am working on Serial Socket Client on TI BLE Examples on github. When i connect to Serial socket server, both of them working properly as expected. The notifications are received by client. But, when i broke the connection of server, client waits too much to terminate connection.

I guess connection termination is related to DEFAULT_UPDATE_CONN_TIMEOUT (which is supervision timeout). And my DEFAULT_UPDATE_CONN_TIMEOUT = 600 which is 6 seconds. Why does my client wait so much to terminate connection ? Is there another parameter which i should update to shorten connection timeout?

Best regards.

over 7 years ago

0 Christin Lee over 7 years ago

TI__Guru 56405 points

Hi,

You need to request a connection parameter update for that supervision timeout value to be used.

0 GOHM ELECTRONICS over 7 years ago in reply to Christin Lee

Expert 2085 points

In default, connection terminated event is received by app in 20 or more seconds. Is it normal ?

So, i am clarifying myself. I should update the connection parameters (connection timeout) using GAPCentralRole_UpdateLink function. Then supervision timeout will be valid.

Regards.

0 Christin Lee over 7 years ago in reply to GOHM ELECTRONICS

TI__Guru 56405 points

Hi,

By default, the supervision timeout is 20s.

And yes, you can change it by sending connection parameter update.

          GAPCentralRole_UpdateLink(connHandle,
                                    DEFAULT_UPDATE_MIN_CONN_INTERVAL,
                                    DEFAULT_UPDATE_MAX_CONN_INTERVAL,
                                    DEFAULT_UPDATE_SLAVE_LATENCY,
                                    DEFAULT_UPDATE_CONN_TIMEOUT);

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RTOS/CC2640R2F: Connection timeout duration