help needed to debug nrf51822 application?

RE: help needed to debug nrf51822 application?

sushil — Mon, 09 Jun 2014 13:14:51 GMT

Thanks John. I will check assert handler and will update about it. Meanwhile i was searching about connection parameters and saw my logs. I also suspect that error occurred when packet was not able to receive on connection parameter update call. And then hci event [BTLE_EVENT_DISCONNECTION_COMPLETE] occurs. Do you have any Idea about what is the issue?

RE: help needed to debug nrf51822 application?

John — Mon, 09 Jun 2014 13:01:20 GMT

I think those are OK. I suspect your application is tripping a ASSERT and resetting. I'd change the assert handler so that it doesn't reset and use the debugger to see the file name and line number that is triggering the assert.

RE: help needed to debug nrf51822 application?

sushil — Mon, 09 Jun 2014 12:54:07 GMT

PeerAddressType: 1; PeerAddress (MSB): ED2893AA0670; Connection Interval: 20.0ms; Connection Latency: 0; Supervision Timeout: 3000ms; Clock Accuracy: (1);

In my application: Min connection interval: 0.5 sec; Max connection interval: 1 sec; Slave latency: 0; connection supervisory timeout: 4 sec

RE: help needed to debug nrf51822 application?

John — Mon, 09 Jun 2014 12:32:49 GMT

I hate to answer a question with a question, but what are you min and max connection intervals, slave latency and connection supervisory timeout settings?

RE: help needed to debug nrf51822 application?

sushil — Mon, 09 Jun 2014 12:15:20 GMT

Thanks John. My connection terminates in 2 to 3 seconds after service discovery. Can you suggest me what is happening? These are the logs after completion of service discovery: =>Serial port read: 04-05-04-00-00-00-08 =>HCI event: BTLE_EVENT_DISCONNECTION_COMPLETE ConnectionHandle: 0x0000, Reason: BTLE_CONNECTION_TIMEOUT =>Received LL Connection Termination Event, reason 08 =>Lost connection to device. Reason: BTLE_CONNECTION_TIMEOUT =>Received packet <HciEvent: eventCode=0x0A> - <HciEvent: eventCode=0x0A> =>Received Link Loss

Is there any document for debugging BLE applications?

RE: help needed to debug nrf51822 application?

John — Mon, 09 Jun 2014 11:59:05 GMT

If you are using the debugger and stop on a break point, the soft device stack will fail and the connection will go down. You can single step your code up until it needs to interact with the soft device and then the debug session will lock up. It is a bit limiting, but I find you get better at dealing with it over time.