Bluetooth stack in freeRTOS

Hello, I am working on a project which is :
create an audio communication between a chip (PIC32 of Microchip) and a headset with the bluetooth protocol. I have to use only HSP profile.
For the project, we have to use a bluetooth module without stack, the stack has to be on the chip. During my reshearch for a opensource bluetooth stack, I see on wikipedia there are existing a bluettoth stack “dotstack” on FreeRTOS :
http://en.wikipedia.org/wiki/Bluetooth_stack Have you opensource bluetooth stack on FreeRTOS ? Do you know where I can find opensource bluetooth stack on freeRTOS for PIC32 ? Thank a lot for you help

Bluetooth stack in freeRTOS

DotStack is already available for Microchip: http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2909 but it is not open source.  I think TI have it running integrated with FreeRTOS on an MSP430. I’m not aware of any open source alternative, but I haven’t looked. Regards.

Bluetooth stack in freeRTOS

Thank for you help.
I already found DotStack, but I search a open source bluetooth stack for access the source code and learn about it. Like student, I prefere learn about the bluetooth stack.