Apache NimBLE is an open-source Bluetooth 5.1 stack (both Host & Controller)
that completely replaces the proprietary SoftDevice on Nordic chipsets. It is
part of Apache Mynewt project.
Feature highlight:
- Support for 251 byte packet size.
- Support for all 4 roles concurrently - Broadcaster, Observer, Peripheral and Central
- Support for up to 32 simultaneous connections.
- Legacy and SC (secure connections) SMP support (pairing and bonding).
- Advertising Extensions.
- Periodic Advertising.
- Coded (a.k.a. Long Range) and 2M PHYs.
- Bluetooth Mesh.
Controller supports Nordic nRF51 and nRF52 chipsets. Host runs on any board
and architecture supported
by Apache Mynewt OS.
If you are browsing around the source tree, and want to see some of the
major functional chunks, here are a few pointers:
nimble/controller: Contains code for controller including Link Layer and HCI implementation
(controller)
nimble/drivers: Contains drivers for supported radio transceivers (Nordic nRF51 and nRF52)
(drivers)
nimble/host: Contains code for host subsystem. This includes protocols like
L2CAP and ATT, support for HCI commands and events, Generic Access Profile (GAP),
Generic Attribute Profile (GATT) and Security Manager (SM).
(host)
nimble/host/mesh: Contains code for Bluetooth Mesh subsystem.
(mesh)
nimble/transport: Contains code for supported transport protocols between host
and controller. This includes UART, emSPI and RAM (used in combined build when
host and controller run on same CPU)
(transport)
porting: Contains implementation of NimBLE Porting Layer (NPL) for supported
operating systems
(porting)
ext: Contains external libraries used by NimBLE. Those are used if not
provided by OS
(ext)
kernel: Contains the core of the RTOS (kernel/os)
There are also some sample applications that show how to Apache Mynewt NimBLE
stack. These sample applications are located in the apps/ directory of
Apache Mynewt repo. Some examples:
If you are having trouble using or contributing to Apache Mynewt NimBLE, or just
want to talk to a human about what you're working on, you can contact us via the
developers mailing list.
Although not a formal channel, you can also find a number of core developers
on the #mynewt channel on Freenode IRC or #general channel on Mynewt Slack
Also, be sure to checkout the Frequently Asked Questions
for some help troubleshooting first.
Anybody who works with Apache Mynewt can be a contributing member of the
community that develops and deploys it. The process of releasing an operating
system for microcontrollers is never done: and we welcome your contributions
to that effort.
More information can be found at the Community section of the Apache Mynewt
website, located here.
Apache Mynewt welcomes pull request via Github. Discussions are done on Github,
but depending on the topic, can also be relayed to the official Apache Mynewt
developer mailing list dev@mynewt.apache.org.
If you are suggesting a new feature, please email the developer list directly,
with a description of the feature you are planning to work on.
Bugs can be filed on the
Apache Mynewt NimBLE Issues.
Please label the issue as a "Bug".
Where possible, please include a self-contained reproduction case!
Feature requests should also be filed on the
Apache Mynewt NimBLE Bug Tracker.
Please label the issue as a "Feature" or "Enhancement" depending on the scope.
We love getting newt tests! Apache Mynewt is a huge undertaking, and improving
code coverage is a win for every Apache Mynewt user.
The code in this repository is all under either the Apache 2 license, or a
license compatible with the Apache 2 license. See the LICENSE file for more
information.
