> There is a closed source BLE library that exposes GATT and GAP functions. Can you expand on the definition on "exposes" here? >From where to whom? On Thu, Mar 29, 2018 at 5:38 PM, David Frey <dpfrey@xxxxxxxxx> wrote: > Hi, > > I'm sorry if I was unclear. What I would like it to be able to write > application code for Linux that uses bluez to talk to BLE devices > connected to a bluetooth adapter. The thing that I think might be > problematic is fitting the adapter into the Linux kernel framework for > bluetooth adapters. The SoC that I want to use as an adapter does not > present an HCI interface. There is a closed source BLE library that > exposes GATT and GAP functions. So my question is really whether it > is possible to support an adapter in the linux kernel that doesn't > support HCI and if it is, are there any examples of drivers like that? > > If this is *not* possible, then I will probably have to define a > non-standard interface (outside of bluez) for controlling the > bluetooth feature of the chip. That's really not ideal since any code > that users write won't be portable to other adapters. I guess I could > try to implement the same DBus interfaces that are provided by Bluez, > but this is definitely not my first choice. > > Thanks, > David > > On Thu, Mar 29, 2018 at 1:10 AM, Alan Martinovic > <alan.martinovic@xxxxxxxxx> wrote: >> Hi, >> I didn't get through you question what are the actual commands >> that are being passed via SPI to the controller once HCI has been removed? >> >> You want to use the API provided by the library on the controller and invoke it >> directly from the host via SPI? >> >> I saw something kind of similar from Nordic: >> https://github.com/NordicSemiconductor/pc-ble-driver >> >> Would be willing to bet that they just invented something >> that replaces HCI, but it's still a intermediate protocol that glues >> together the host and controller, can't see how that can be avoided. >> >> Be Well, >> Alan >> >> >> >> >> >> On Wed, Mar 28, 2018 at 8:02 PM, David Frey <dpfrey@xxxxxxxxx> wrote: >>> Is it possible to support a bluetooth adapter in the Linux kernel in >>> the case where the adapter doesn't present a HCI interface? The >>> adapter in question was originally envisioned as a standalone host, >>> but I am interested in using it as an adapter (over SPI) controlled by >>> another CPU running Linux. The BLE implementation on the target is a >>> closed source binary that provides GAP and GATT APIs. Details of the >>> APIs are here: http://labs.mediatek.com/api/mt7697/group___bluetooth.html >>> >>> If it *is* possible to support adapters which don't offer an HCI >>> interface, then I'm hoping that someone can point me at an example or >>> an interface definition so I can get an idea of what is required. >>> >>> Thanks, >>> David >>> -- >>> 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
