nRFConnect for desktop - how to set offset in WRITE_REQ ?

[eyalasko]

Hello,

In order to exchange long messages with the device, I would like to use 'offset' field in nRF COnnect for desktop (mobile)

• Is there a way to send WRITE_REQ with a specific offset?
• Is there a way to ask for specific offset in READ_REQ?

Thanks

[Hung Bui]

Hi, 
Could you clarify you are using nRConnect for Android or for iOS  ? 
Most likely the offset is not supported on the app, but if you develop your own app you should be able to do that as far as I know. 

[eyalasko]

Hi,

I mostly use the PC version (Windows) and Android occasionally.

Is this achievable on any of these ?

Thanks

[Hung Bui]

Hi Eyalasko, 

The app currently doesn't support write with offset. It does support long write when you try to write longer than ATT-MTU but doesn't give  you the control to do offset on your own. 

I would suggest to have a look at the pc-ble-driver which the nRF Connect application based on top. 

Please have a look here: https://github.com/NordicSemiconductor/pc-ble-driver

Or here is the python wrapper: https://github.com/NordicSemiconductor/pc-ble-driver-py

There are some examples in the repos you can have a look.