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CC2640R2F: Voice over BLE 4.2: compatibility and use case?

AnBer
Mastermind 30210 points
Part Number: CC2640R2F

Team,

Regarding our Voice over BLE example:
http://dev.ti.com/tirex/content/simplelink_cc2640r2_sdk_1_40_00_45/docs/blestack/ble_user_guide/html/voice/ble_voice.html

Two mode of operation are possible (VoGP ou VoHoGP). However only VoHoGP seem to be compatible with Bluez.
-Are there some Bluez side example existing to interpret the different frame on a Linux host?

-On this specific case an Intel wifi/BLE board is used as Linux host. Can CC2640R2F LP be used to communicate with any HW for Voice Over BLE? Or it can only work between two CC2640R2F HW board?

-Can more than 2 devices connect together for Voice over BLE? or is it limited to two devices?
Can you please gives some details for the limitation?

-Can you confirm if the 2 devices that transfer Voice over BLE need to switch role (transmitter/receiver) for every transfer?

Thanks in advance,

A.

  • 0
    TI__Guru* 82341 points
    Hi,

    1) Both the TI Voice Profile (VoGP) and the Voice over HID over GATT Profile (VoHoGP) are essentially Bluetooth Low Energy profiles developed by TI. I am not familiar with Bluez, but if you can implement custom profiles and services then you should be able to port our profiles to Bluez.

    There is no Bluez example application for TI Voice over BLE profiles as far as I'm aware.

    2) CC2640R2F can communicate over BLE with any BLE hardware.

    3) To get a decent quality on the voice samples transmitted over BLE, you want to have as high throughput as possible. This is why we have limited this this example to connect to one device.

    4) In the Bluetooth Core Spec, every device needs to switch role (transmitter/receiver) for every packet. (First packet sent by master, next packet sent by slave etc).

    BTW, I don't know if you saw but we have examples for the TI audio profiles on github: github.com/.../simplelink_cc2640r2_sdk-2.20