Hello Dario, On 19 December 2016 at 17:41, Dario Teixeira <dario.teixeira@xxxxxxxxxxx> wrote: > Hi, > > I'm new to Bluetooth programming, and I have some basic questions > about the best approach to implement a fairly simple scenario. > I have a small embedded device running Linux, and which supports > Bluetooth 4.0. I'm also developing a mobile app that needs to > exchange some data with the embedded device. The data consists > of only a few JSON-encoded objects and is small in volume. The > communication must happen bidirectionally, though. > > Those are pretty much the requirements. Now the questions: > > a) On the embedded side, do I need to program a small daemon using > the DBUS-based Bluez API, or can I set up a special device and > read/write to it as if it were a character device? > > b) The old interface [1] has been deprecated, right? (It's my > understanding that only the new DBUS-based API should be used.) > > c) Is Bluetooth Classic or Bluetooth Low Energy better for this > scenario? (I've read that BLE can dispense with pairing.) > > Thanks in advance for your time! > Best regards, > Dario Teixeira > > [1] https://people.csail.mit.edu/albert/bluez-intro/ > I'll take a go at trying to answer this... To answer your last question first, if you are only exchanging small amounts of data then I would suggest going with BLE rather than Classic. There are a couple of resources online that might be helpful to give you some background. 1) Martin from Bluetooth SIG giving an overview: https://youtu.be/auApsoMHxtA (There is an issue with the audio for the first couple of minutes but stick with it) 2) Adafruit introduction to installing BlueZ https://learn.adafruit.com/install-bluez-on-the-raspberry-pi/overview Using BlueZ as a peripheral is still behind the --experimental flag so you will need to read up on that. There are some BLE examples using DBus API in the BlueZ repository at: http://git.kernel.org/cgit/bluetooth/bluez.git/tree/test/example-gatt-server http://git.kernel.org/cgit/bluetooth/bluez.git/tree/test/example-advertisement If you are more familiar with Javascript/Node then you might want to take a look at: https://github.com/sandeepmistry/bleno Good luck! Regards, Barry > -- > To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" > in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
