Is it possible to transfer data between two BLE devices?

Question

I want to use a BLE dongle on my Mac/PC and use the serial port to send numeric data to an app that I developed on my Nexus 7.

Is this possible?

I assume they are both central so it wont work? Do I need a third BLE device?

Answer 1

Yes, it is possible for sending and receiving short pieces of data known as "attributes" over a BLE link. All current Low Energy application profiles are based on GATT.

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Answer 2

Your Mac and your Nexus are both dual mode devices, meaning they can act as both central and peripheral. You can set your Nexus 7 as a peripheral, advertise from it, and then connect to it through your Mac which is acting as a central. Once the connection is established your Nexus 7 can host a GATT server and your Mac can perform GATT client operations to read/write data.

There is a relevant question here:- Is it possible to connect iOS and android device using Bluetooth?

I hope this helps.