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Embedded Bluetooth Host Solutions in 2019??...........

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janoc:

--- Quote from: Smokey on May 25, 2019, 11:53:02 am ---Baaa.... NRF52 series was looking really cool.. but...

https://devzone.nordicsemi.com/f/nordic-q-a/44043/can-i-use-hsp-hfp-profile-together-with-hid-profile-within-one-ic-nrf52-bluetooth5-0-ic

--- Quote ---HSP/HFP are Bluetooth classic profiles. Nordic devices only supports the Bluetooth Low Energy part of Bluetooth 5.0 so this won't be feasible
--- End quote ---

--- End quote ---

Yep, those chips don't work with Bluetooth Classic. Get BLE headphones?

If you can't, then you are stuck with the chipsets like those made by CSR, Bluegiga and similar. And expect complexity and a lot of $$$ to be spent on development kits and modules.

I have been looking into this in the past because I wanted to use cheap Bluetooth controllers (HID) and the most feasible way unless one wants to pay big money for the proprietary development tools is to implement a HCI interface for an USB Bluetooth dongle.

There are some projects online doing this using STM32s and PIC32s, AFAIK. However, this is a very complex approach (complex Bluetooth stack on top of the USB host stack, not to mention that each dongle is different and you need to write a driver for them!), by then it is probably simpler and cheaper to stick a Raspberry Pi Zero with an USB dongle in there and be done with it ...

There are some Bluetooth modules that implement the HCI interface over UART, so that saves you the whole USB host stack mess, but those are not commonly available (or rather you need the expensive dev tools and reprogram a regular module with the proper firmware).

Smokey:

--- Quote from: janoc on May 25, 2019, 07:19:18 pm ---...Get BLE headphones?

--- End quote ---

Does that even exist? 

It doesn't look like there is any sort of audio profile in BLE now.
https://en.wikipedia.org/wiki/Bluetooth_Low_Energy#Applications

Article from 2016 talking about future plans for BLE audio:
https://www.businessinsider.com/bluetooth-audio-future-update-low-energy-2016-10

janoc:

--- Quote from: Smokey on May 25, 2019, 11:18:37 pm ---
--- Quote from: janoc on May 25, 2019, 07:19:18 pm ---...Get BLE headphones?

--- End quote ---

Does that even exist? 

It doesn't look like there is any sort of audio profile in BLE now.
https://en.wikipedia.org/wiki/Bluetooth_Low_Energy#Applications


--- End quote ---

I haven't looked into BLE audio support but e.g. HID (which I needed) exists and is quite well supported.


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