Application Fails after certain time

David Elliott1

My application is a modified keyfob design that connects to an iphone and vibrates on text message. I discovered that after 10-14 hours the device stops vibrating on text notification. However the device is still connected through bluetooth and seems to still be running.

This leads me to believe that my application stops running but the BLE stack continues. All my application specific tasks will not occur such as button press' or vibration on notification.

I have tested sending a massive amount of texts and it still works after a few hundred so I do not think that that is causing an overflow.

Does anyone have any ideas on what could be going wrong? Or how I can debug this issue?

over 11 years ago

0 Willis1 over 11 years ago

TI__Genius 17975 points

Do you have a sniffer capture of this issue occurring?

0 David Elliott1 over 11 years ago in reply to Willis1

Intellectual 295 points

Not yet. I will replicate the issue and use a sniffer the next time this error occurs and post the result.

0 Ralf Gütlein over 11 years ago

Prodigy 200 points

David Elliott1 said:
believe that my application stops running but the BLE stack continues

I do not think that this can be the case. The framework does not provide a real multitasking system. The application cannot "hang" while the stack continues. If you still see a healthy connection the application is still running. I would dig into my application and look for flags or counters that trigger or stop the vibration function. Could, for example, be an integer overflow that lets a counter turn negative after 128 or 32768 events.

0 David Elliott1 over 11 years ago in reply to Ralf Gütlein

Intellectual 295 points

Ralf,

This is one of my first projects with these processors so I am new to this.

If that is the case and there is no multitasking then maybe something else is the issue. I am looking into other causes such as overflow like you mentioned and problems with how the phone talks to the device. But it takes many hours to test so it is hard to quickly test a theory.

I will be sure to post the cause of my error when i find it. Thanks for your thoughts.

0 YiKai Chen over 11 years ago in reply to David Elliott1

Guru 735685 points

Hi David,

Check if you allocate memory but not free it.

Bluetooth®︎

Bluetooth forum

Application Fails after certain time