NimBLE port for ESP32

jaracil
Posts: 10
Joined: Sat Apr 02, 2016 4:24 pm

NimBLE port for ESP32

Postby jaracil » Tue Feb 19, 2019 12:45 pm

Hi.

I'm working on NimBLE por for ESP32.
https://github.com/jaracil/nimble-esp32

NimBLE is a complete BLE (Bluetooth Low Energy) lightweight and cleaner library.
https://github.com/apache/mynewt-nimble
It uses ~170K less program memory than bluedroid.

There is still a lot of work, but for now, the example compiles and works.

Any help is welcome :)

captain_morgan
Posts: 28
Joined: Wed Dec 09, 2015 6:39 pm

Re: NimBLE port for ESP32

Postby captain_morgan » Tue Feb 19, 2019 6:23 pm

Looks awesome! I'm just gearing up for a new project and will give this a spin for the BLE needs.

ESP_Hrishi
Posts: 7
Joined: Fri Sep 28, 2018 3:06 am

Re: NimBLE port for ESP32

Postby ESP_Hrishi » Wed Feb 20, 2019 5:16 am

Hi there,

Great to hear that you are working on NimBLE. As of now, we have an almost ready implementation of NimBLE stack ported onto ESP-IDF, along with a few sample examples. The features that are already tested are: Peripheral role (GATT Database Population, Advertisement, Handling Characteristic and Descriptor read/write, Notifications/Indications), Central role (Scanning, Discovery, Characteristic and Descriptor read/write, Subscription to Indications/Notifications) and BLE SMP. In this effort, we have also tried to make it cleaner and simpler by maintaining all the existing APIs of NimBLE along with a single ESP-NimBLE API for initialization.

Currently it is in the process of QA. It should be out on the Github soon.

Thanks,
Hrishikesh

jaracil
Posts: 10
Joined: Sat Apr 02, 2016 4:24 pm

Re: NimBLE port for ESP32

Postby jaracil » Wed Feb 20, 2019 7:40 am

Cool! I stop my nimble port waiting for your news.

ESP_Hrishi
Posts: 7
Joined: Fri Sep 28, 2018 3:06 am

Re: NimBLE port for ESP32

Postby ESP_Hrishi » Wed Mar 13, 2019 6:14 am

Hello All,

The NimBLE preview release is out on Github: https://github.com/espressif/esp-idf/tr ... le-preview

The sample examples can be found here: https://github.com/espressif/esp-idf/tr ... oth/nimble

captain_morgan
Posts: 28
Joined: Wed Dec 09, 2015 6:39 pm

Re: NimBLE port for ESP32

Postby captain_morgan » Thu Mar 14, 2019 5:43 pm

Super cool! nice work all around. I spend some time yesterday evening digging into this branch and the results are good!

First off, it's quite a bit easier to use than Bluedroid, I reduced my overall code by about half.

I was able to follow the heart rate example easily and within about 30 minutes had setup functional Battery Service.

Image

Nice work, I look forward to this making it into mainline.

ESP_Hrishi
Posts: 7
Joined: Fri Sep 28, 2018 3:06 am

Re: NimBLE port for ESP32

Postby ESP_Hrishi » Fri Mar 15, 2019 5:03 am

Thanks for the report. Feel free to play around with the stack/examples and submit any feedback/issues.

Just FYI, if you didn't use this, NimBLE stack has the support for a few profiles (https://github.com/espressif/esp-nimble ... t/services) and battery service is one of them.

You can directly call the API ble_svc_bas_init() from the example and you are done.

captain_morgan
Posts: 28
Joined: Wed Dec 09, 2015 6:39 pm

Re: NimBLE port for ESP32

Postby captain_morgan » Tue Mar 19, 2019 12:20 am

Yup, did see that and mostly what I used as my basis. Working on adding a couple more services and will report on any issues I have.

locustcox
Posts: 5
Joined: Tue Sep 04, 2018 9:36 pm

Re: NimBLE port for ESP32

Postby locustcox » Sat Mar 23, 2019 2:54 pm

Any idea if/when this will make it into mainline? The code size reductions would be fantastic.

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