Bluetooth Low latency sample code issue

[Sanju Vikasini]

Hello, 

I tried to run the llpm (low latency packet mode) code by establishing a connection between nrf5340dk and nrf52840 devices. 

I receive a transmission latemcy between 2-3 ms instead of ~ 1ms. 

Could you please tell me what could be the issue in this case? 

Thanks! 

[Hung Bui]

Hi Sanju, 

Unfortunately the condition discussed here still applied. You can also see that in the CONFIG_BT_CTLR_SDC_LLPM description

It's only fully supported (1ms) on nRF52 series for now. 

[Sanju Vikasini]

Okay, but can I reduce the latency a bit by implementing a circular or ring buffer to transmit the data? (will it help the latency to be around 1.5ms rather than 1ms)

[Hung Bui]

Hi Sanju, 
I don't think so . It's more about the communication between the host and the controller is the bottle neck. 

[Sanju Vikasini]

Understandable. Thanks a lot. I will try with two nrf52 devices!