Hi Mike, Actually NuttX doesn't use Zephyr BLE Stack, it uses an ancient BLE stack that Intel released as BSD license.
That stack was used on Zephyr and evolved a lot with help from Nordic Semi. It was only a guy from Nordic that started porting that stack to nRF51/nRF52 and Nordic end-up adding more people to the project after some customers started using it. I think there is nobody inside Nordic using NuttX or at least nobody there that care about contributing code to NuttX mainline! :-) BT4 AFAIK was the first Bluetooth with support to BLE. Both BT4 and BT5 have support to Bluetooth Classic and BLE. Currently NuttX doesn't have support to BT Classic, so there is no option to use it with ESP32 on NuttX. Espressif ported BlueDroid from Android to get Bluetooth Classic support on ESP32 (new Espressif chips are not coming with internal IP to support Bluetooth Classic anymore). Another option is using BlueKitchen stack, but in both case a port to NuttX will be needed. BR, Alan On 9/1/23, Mike Moretti <nu...@mordent.com.invalid> wrote: > Unfortunately, from what I remember, nimble only supports ble5? I > didn't think it supported bt4 (classic). The app I'm writing has to > support being a beacon using both. > > So, the ble implementation in NuttX is all on someone's head and not > documented anywhere? Who wrote it? How do you even know if it works > aside from whatever simple stuff exists in btsak? How is nimble even > able to use this implementation (did someone write that layer for nimble)? > > -m > > On 9/1/2023 1:12 PM, Tiago Medicci Serrano wrote: >> Hi! >> >> There is no documentation available for that, but I can add some >> information about BLE and Wi-Fi and, hopefully, you can try and submit an >> example application for the NuttX community. >> >> Well, the `esp32-devkitc:blewifi` already does the radio sharing with >> Wi-Fi. As you've said, it builds only the `btsak` app to provide simple >> usage of the BLE stack on ESP32. You can build the nimBLE port available >> on >> `nuttx-apps` and try it with ESP32. >> >> If I'm not mistaken, there were some users using nimBLE on NuttX (maybe >> you >> can ask specifically about it). >> >> Please share your findings and help us to improve documentation on NuttX >> ;) >> >> Best regards, >> >> Em sex., 1 de set. de 2023 às 12:00, Mike Moretti >> <nu...@mordent.com.invalid> >> escreveu: >> >>> Hi, >>> >>> I still have not heard back about this. Is there any documentation for >>> developing with BLE on NuttX (with esp32)? I can't find anything. I >>> found a presentation that says it's based on Zephyr but the NuttX code >>> doesn't seem to have anything at all in it like what's in the Zephyr api >>> docs. It almost looks like NuttX implemented the lower level bluez >>> driver ioctls? >>> >>> Are there any examples apps for ble? Especially ones that include both >>> bt4 and ble5? >>> >>> Thanks, >>> -m >>> >>> >>> On 8/29/2023 8:14 AM, nu...@mordent.com.INVALID wrote: >>>> Hi, >>>> >>>> I'm developing a device using an ESP32 with NuttX that needs to >>>> broadcast a beacon/advertise on both bt4 and ble5 (and also do radio >>>> sharing with wifi). I've done some work with ble 5 with ESP-IDF and >>>> understand a little about bluetooth. Unfortunately, I can't seem to >>>> find any documentation or examples of bluetooth for NuttX except for >>>> the very limited btsak shell command code that looks like it only >>>> supports ble 5. I was hoping I wouldn't have to try to reverse >>>> engineer the various bluetooth layers in the guts of NuttX to figure >>>> this out. Does anyone have any examples or info on how to >>>> configure/implement something like this? It's required to support >>>> both bt4 and ble5 at the same time, unfortunately (but luckily it's >>>> only a beacon). >>>> >>>> Thanks, >>>> -m >>> > >
