Hi everyone, I'm using the nRF5340 on a custom PCB board without an external 32 kHz oscillator. On the network core I flashed the hci_ipc sample. For some reason I occasionally get BLE disconnect reason 8, either shortly after sending data over BLE or after some time while the connection is active. My question is: Why is this happening? Could it be caused by something blocking BLE processing? Is it possible that BLE communication is being affected because the nRF5340 uses two cores? What are the other common reasons for disconnect reason 8 on the nRF5340, especially when using the internal RC oscillator? How can I debug or solve this issue? I'm currently using the internal LF RC oscillator configuration. Thanks in advance!

BLE disconnect reasone 8

Petar02 1 hour ago

Hi everyone,

I'm using the nRF5340 on a custom PCB board without an external 32 kHz oscillator. On the network core I flashed the hci_ipc sample.

For some reason I occasionally get BLE disconnect reason 8, either shortly after sending data over BLE or after some time while the connection is active.

My question is:

Why is this happening?
Could it be caused by something blocking BLE processing?
Is it possible that BLE communication is being affected because the nRF5340 uses two cores?
What are the other common reasons for disconnect reason 8 on the nRF5340, especially when using the internal RC oscillator?
How can I debug or solve this issue?

I'm currently using the internal LF RC oscillator configuration.

Thanks in advance!