hi, I read your description.
as I know you have a device that sends ble data and you want to get this data and send it back to your data.
I can do your project.
as you said you have simple code.
you should send me your simple code. I see it and fix the bugs and if have some, and implement ble in your code.
Please contact me over chat to talk more about the details.
have a nice day.