Can I send 256KB of data via BLE using NUS

[pal_722]

Hi, 

I have been using NUS code to stream data between mobile and nrf5340 audio dk. 

is it possible to stream 256KB of data at a go?
what is the maximum MTU size that i can put in thr prj.conf file?

Thank you

[Amanda Hsieh]

Hi, 

is it possible to stream 256KB of data at a go?

What do you mean by "stream 256KB of data at a go"? Could you elaborate in more detail? What issue do you see? A sniffer log might help to know what happened in the air. 

what is the maximum MTU size that i can put in thr prj.conf file?

The max MTU size for nRF53 is 498. 

Regards,
Amanda H.

[pal_722]

HI Amanda Hsieh 

Amanda Hsieh said:

What do you mean by "stream 256KB of data at a go"? Could you elaborate in more detail?

I am trying to send multiple sensor data under a profile to a base station via BLE.
The current sensor data size is 256KB in total. I want to send this data to the system for analysis.

Can I achieve that ?
If 256KB is too much, then how much is the maximum size I can transfer?

Amanda Hsieh said:

The max MTU size for nRF53 is 498. 

OK.

[Felix Shih]

Hi pal,

You need to decompose the data for sending, and reorganize in the base station.

I have asked the similar question, for your reference.

devzone.nordicsemi.com/.../nus-example-uart-rx-can-t-receive-all-data