mirror of
https://github.com/h2zero/esp-nimble-cpp.git
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58 lines
2.9 KiB
Markdown
58 lines
2.9 KiB
Markdown
# Overview
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This is a C++ BLE library for the ESP32 that uses the NimBLE host stack instead of bluedroid.
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The aim is to maintain, as much as reasonable, the original bluedroid C++ & Arduino BLE API by while adding new features
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and making improvements in performance, resource use, and stability.
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**Testing shows a nearly 50% reduction in flash use and approx. 100kB less ram consumed vs the original!**
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*Your results may vary*
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<br/>
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# What is NimBLE?
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NimBLE is a completely open source Bluetooth Low Energy stack produced by [Apache](https://github.com/apache/mynewt-nimble).
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It is more suited to resource constrained devices than bluedroid and has now been ported to the ESP32 by Espressif.
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<br/>
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# ESP-IDF Installation
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### v4.0+
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Download as .zip and extract or clone into the components folder in your esp-idf project.
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Run menuconfig, go to `Component config->Bluetooth` enable Bluetooth and in `Bluetooth host` NimBLE.
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Configure settings in `NimBLE Options`.
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`#include "NimBLEDevice.h"` in main.cpp.
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Call `NimBLEDevice::init` in `app_main`.
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<br/>
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### v3.2 & v3.3
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The NimBLE component does not come with these versions of IDF (now included in 3.3.2 and above).
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A backport that works in these versions has been created and is [available here](https://github.com/h2zero/esp-nimble-component).
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Download or clone that repo into your project/components folder and run menuconfig.
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Configure settings in `main menu -> NimBLE Options`.
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`#include "NimBLEDevice.h"` in main.cpp.
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Call `NimBLEDevice::init` in `app_main`.
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<br/>
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# Using
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This library is intended to be compatible with the original ESP32 BLE functions and types with minor changes.
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If you have not used the original Bluedroid library please refer to the [New user guide](New_user_guide.md).
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If you are familiar with the original library, see: [The migration guide](Migration_guide.md) for details.
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Also see [Improvements and updates](Improvements_and_updates.md) for information about non-breaking changes.
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For more advanced usage see [Usage tips](Usage_tips.md) for more performance and optimization.
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<br/>
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# Need help? Have a question or suggestion?
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Come chat on [gitter](https://gitter.im/NimBLE-Arduino/community?utm_source=share-link&utm_medium=link&utm_campaign=share-link) or open an issue at [NimBLE-Arduino](https://github.com/h2zero/NimBLE-Arduino/issues) or [esp-nimble-cpp](https://github.com/h2zero/esp-nimble-cpp/issues)
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<br/>
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# Acknowledgments
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* [nkolban](https://github.com/nkolban) and [chegewara](https://github.com/chegewara) for the [original esp32 BLE library](https://github.com/nkolban/esp32-snippets/tree/master/cpp_utils) this project was derived from.
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* [beegee-tokyo](https://github.com/beegee-tokyo) for contributing your time to test/debug and contributing the beacon examples.
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* [Jeroen88](https://github.com/Jeroen88) for the amazing help debugging and improving the client code.
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<br/>
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