Memory leak every disconnection/connection for BLE

I'm investigating some crashes of a data field that connects to a sensor using BLE due to an out of memory condition.

I have been able to replicate the crash when the sensor is disconnected and connected again multiple times. Every time connection is recovered a leak of aprox 0.6 kB happens, so that after some repetitions the data field finally crashes.

There's nothing I can identify in the code that causes this leak, so not sure if it happens at the BLE API layer.

Has anyone observed this behavior?

jim_m_58 I think it could be easy to you to simulate and check this using BLEscan. Could you do a test to know whether this happens or not?

0 jim_m_58 3 days ago

I put an extra like in the store version of blescan to display the free memory. That can bounce around as the app is finding new devices, but once stable, the free I see before I connect is the same as I see after I disconnect, so I don't lose any. I'm using a fr570.

This may be a bit hard to see with blescan.

0 InigoTolosa 3 days ago in reply to jim_m_58

Thanks, I will do some tests with blescan.

0 jim_m_58 3 days ago in reply to InigoTolosa

The version with free memory (M:) will be available shortly if it's not there already.. Remember, free memory drops each time a new device is seen

0 InigoTolosa 3 days ago in reply to jim_m_58

I will take this into account and will try to test when seen devices remain the same.