The Nuclei Software Development Kit (SDK) is an open-source software platform to speed up the software development of SoCs based on Nuclei Processor Cores.
This Nuclei SDK is built based on the NMSIS, user can access all the APIs provided by NMSIS and also the APIs that provided by Nuclei SDK which mainly for on-board peripherals access such as GPIO, UART, SPI and I2C, etc.
Nuclei SDK provides a good start base for embedded developers which will help them simplify software development and improve time-to-market through well-designed software framework.
Design and Architecture¶
The Nuclei SDK general design and architecture are shown in the block diagram as below.
As Nuclei SDK Design and Architecture Diagram shown, The Nuclei SDK provides the following features:
Nuclei Core API service is built on top of NMSIS, so silicon vendors of Nuclei processors can easily port their SoCs to Nuclei SDK, and quickly evaluate software on their SoC.
NMSIS-NN and NMSIS-DSP library can be also used in Nuclei SDK, and the prebuilt libraries are included in NMSIS/Library folder of Nuclei SDK.
Provided bare-metal service for embedded system software beginners and resource-limited use-cases.
Currently Nuclei SDK didn’t define any common device APIs to access GPIO/I2C/SPI/UART devices, it still relied on the device/peripheral APIs from firmware libraries from various silicon vendors, such as current supported GD32VF103 SoC.
Applications are logically seperated into three parts:
General applications for all Nuclei Processors: In the Nuclei SDK software code, the applications provided are all general applications which can run on all Nuclei Processors, with basic UART service to provide
HummingBird SoC applications: These applications are not included in the Nuclei SDK software code, it is maintained seperately, it will use resource from HummingBird SoC and its evaluation boards to develop applications, which will not be compatiable with different boards.
GD32VF103 SoC applications: These applications are not included in the Nuclei SDK software code, it is maintained seperately, it will use resource from GD32VF103 SoC and its evaluation boards to develop applications, which will not be compatiable with different boards.
Contributing to Nuclei SDK is welcomed, if you have any issue or pull request want to open, you can take a look at Contributing section.
Copyright (c) 2019 - Present, Nuclei System Technology. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the Nuclei System Technology., nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. NY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.