I have Quectel M66 modem which is bluetooth enabled. I need some hints about how can I provide internet to my embedded device (which has M66 as a peripheral) using Android or iOS, or other device which supports bluetooth tethering.
I believe Android has that feature by default. Take a look at this link:
https://www.androidpit.com/share-wifi-over-bluetooth
I believe you can just approach the tethering device as a wifi acces point following the above guide.
This link sheds some light on choosing what tethering approach is appropriate:
http://m.pocketnow.com/2014/03/21/tethering-methods
My initial thought was "why would you want to tether through Bluetooth?" but looking at the power consumption, it might be a good choice for an embedded system, or if Wi-Fi is not available on the board.
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I'm exploring a possibility to emulate Bluetooth TV remote control. And I faced a problem that I can't find any information about the type of Bluetooth, which TV manufacturers use in their devices. If they use Bluetooth Classic (BR/EDR), then I have to implement either AVRCP or HID profiles to fulfil TV remote control functionality. If they use Bluetooth LE, then I have to implement HOGP profile. So, could you suggest to me which Bluetooth profile is mostly implemented in modern TVs with Bluetooth support? If someone has experience with a particular TV model, which supports Bluetooth, then I will be also appreciated for any information about Bluetooth, which is installed there.
As far as I read about the dev boards, every SoC is capable to use Bluetooth.
I didn't tested it yet, but can I use Android Things with a Bluetooth connection? My question is, how can I enable Bluetooth without an input device? If I want to enable Bluetooth on my phone (with code), I had to confirm it, but this can't be possible on Android Things.
Update: Since the release of Android Things developer preview 3, Bluetooth and BLE are now available.
Old Answer
No. You can not use Bluetooth with the current version of AndroidThings (developer preview 1).
It is said in the known issues part of the release notes that Bluetooth is currently disabled (and so is USB).
It is supposed to be included at some point, but at the moment if you try to get a BluetoothAdapter it does return null.
Android Things will use the latest version of Bluetooth called Bluetooth Low Energy and the only similarity between the two is that they have Bluetooth in the name!
Can I use Android Things with a Bluetooth connection?
Yes, well a Bluetooth Low Energy connection
https://www.link-labs.com/bluetooth-vs-bluetooth-low-energy/
In summary, Bluetooth and Bluetooth Low Energy (BLE) are used for very different purposes. Bluetooth can handle a lot of data, but consumes battery life quickly and costs a lot more. BLE is used for applications that do not need to exchange large amounts of data, and can therefore run on battery power for years at a cheaper cost. It all depends on what you’re trying to accomplish.
Everything you need to know about BLE is written here:
https://developer.android.com/guide/topics/connectivity/bluetooth-le.html
how can I enable Bluetooth without an input device?
You do not pair BLE devices like you used to with the older Bluetooth (but you can use Bonding). Check this out:
Android Bluetooth Low Energy Pairing
https://stackoverflow.com/a/20093695/413127
But as stated by #shalafi Android Things doesn't currently support Bluetooth
I have a USB audio device (Scarlett Focusrite 18i6) which does not require a driver, so I assume it uses the USB HID Audio Class standard.
It works on everything from Windows and Mac to Linux and iOS.
But on Mac and Windows, it has a control application which can for instance enable and disable direct monitoring.
How would I go about reverse-engineering how this is done, so that I can reproduce it on platforms where the control application does not exist?
I'm thinking of booting up Windows in a VMWare session and then logging the USB communication (somehow?) while using the control application, but it does sound tedious considering the amount of data and my very limited understanding of USB.
Any other suggestions?
You could try running the control application using Wine instead of reverse engineering it. However, if it's accessing USB devices then there is a good chance it might be using an API not supported by Wine.
To reverse engineer it, you should find a way to look at the USB traffic between the computer and the device. Total Phase has some hardware USB protocol analyzers, but you might be able to find a good software solution for free.
I wonder whether it is possible to emulate a specific bluetooth device like a Remote Controller for a TV or another device with my PC. I'd be okay with installing an additional hardware device for my computer (e. g. a BlueTooth PCIe card).
I imagined something like "recording" all single commands of my original remote controller using my Bluetooth card and afterwards use these recorded commands to turn on my TV for example.
Is something like this possible (with additional hardware maybe)?
Of course this is possible. Bluetooth is just a protocol and you can impliment it in your custom software to emulate all kinds of devices. If you need to emulate simple devices like keyboard or mouse, there are many ready solutions like this.
But if you have non standard device, there won't be any ready solutions and you will have to implement it yourself. What can help you:
If you have some kind of controller for PC and you want to emulate device with unknown protocol, you can use WireShark or other sniffer to understand what's going on.
There is an emulator called BT-Sim, but it is so poorly documented that I can't even guess what it does.
You can can take as example different android software like described in answers to this question.
You can check different program samples for PC like this.
For hardware you need only simple Bluetooth dongle. However, if you want to spy on some BLE (Bluetooth Low Energy) devices, you can buy hardware sniffer like this.
(At least in Windows 10) Microsoft Store has an application called "Bluetooth LE Explorer" which is able to simulate different kind of Bluetooth GATT profiles as a peripheral.
For my project I have an Android phone and an Arduino device that communicate via Bluetooth. I was wondering if anyone knows any software tools I could use to monitor a bluetooth communications between two devices. Something like a packet eavesdropping. Preferably for Linux.
Take a look at ubertooth one. In the linked webpage there are instructions on how to build the dongle, as well as links to shops selling assembled dongles may be bought. Ubertooth one should work well with Kismet, and thus in Linux, by using a BT plugin (disclaimer: I have no personal experience on this).
Sounds like you are after a Bluetooth sniffer.
Bad news: They are almost exclusively Windows OS based and cost mega-$.
http://www.fte.com/products/bluetooth.aspx
If you were using BlueZ for one side of the communication you could use the BlueZ HCIDUMP app and Wireshark.
I don't think anyone has made a Linuz/Bluez Sniffer - could be wrong.