Nuclei embedded Software Development Kit, Release 0.2.6

This is the official release version 0.2.6 of Nuclei SDK.

• Application

  • Fix typo in rtthread demo code
  • Update helloworld application to parse vector extension

• NMSIS

  • Update NMSIS DSP and NN library built using NMSIS commit 3d9d40ff

• Documentation

  • Update quick startup nuclei tool setup section
  • Update build system documentation
  • Fix typo in application documentation

Nuclei embedded Software Development Kit, Release 0.2.5

This is the official release version 0.2.5 of Nuclei SDK.

• SoC

  • For SOC=hbird, in function _premain_init of system_hbird.c, cache will be enable in following cases:

    • If __ICACHE_PRESENT is set to 1 in hbird.h, I-CACHE will be enabled
    • If __DCACHE_PRESENT is set to 1 in hbird.h, D-CACHE will be enabled

  • All startup and system init code are adapted to match design changes of NMSIS-1.0.1

    • _init and _fini are deprecated for startup code, now please use _premain_init and _postmain_fini instead
    • Add DDR download mode for Hummingbird SoC, which downloaded program into DDR and execute in DDR

• Documentation

  • Fix several invalid cross reference links
  • Rename RVStar to RV-STAR to keep alignment in documentation

• NMSIS

  • Update and use NMSIS 1.0.1
  • Add NMSIS-DSP and NMSIS-NN library for RISC-V 32bit and 64bit
  • Both RISC-V 32bit and 64bit DSP instructions are supported

Nuclei embedded Software Development Kit, Release 0.2.5-RC1

This is release 0.2.5-RC1 of Nuclei SDK.

• Documentation

  • Fix invalid links used in this documentation
  • Rename RVStar to RV-STAR to keep alignment in documentation

• NMSIS

  • Update and use NMSIS 1.0.1-RC1
  • Add NMSIS-DSP and NMSIS-NN library for RISC-V 32bit and 64bit
  • Both RISC-V 32bit and 64bit DSP instructions are supported

• SoC

  • All startup and system init code are adapted to match design changes of NMSIS-1.0.1-RC1
    • _init and _fini are deprecated for startup code, now please use _premain_init and _postmain_fini instead
    • Add DDR download mode for Hummingbird SoC, which downloaded program into DDR and execute in DDR

Nuclei embedded Software Development Kit, Release 0.2.3

This is release 0.2.3 of Nuclei SDK.

• OS

  • Add RT-Thread 3.1.3 as a new RTOS service of Nuclei SDK, the kernel source
    code is from RT-Thread Nano project.
  • Update UCOSII source code from version V2.91 to V2.93
  • The source code of UCOSII is fetched from https://github.com/SiliconLabs/uC-OS2/
  • Warning: Now for UCOSII application development, the app_cfg.h, os_cfg.h
    and app_hooks.c are required, which can be also found in
    https://github.com/SiliconLabs/uC-OS2/tree/master/Cfg/Template

• Application

  • Add RT-Thread demo application.
  • Don't use the get_cpu_freq function in application code, which currently is only
    for internal usage, and not all SoC implementations are required to provide this function.
  • Use SystemCoreClock to get the CPU frequency instead of using get_cpu_freq() in
    whetstone application.
  • Update UCOSII applications due to UCOSII version upgrade, and application development
    for UCOSII also required little changes, please refer to :ref:design_rtos_ucosii
  • Fix time_in_secs function error in coremark, and cleanup coremark application.

• Documentation

  • Add documentation about RT-Thread and its application development.
  • Update documentation about UCOSII and its application development.
  • Update coremark application documentation.

• Build System

  • Add build system support for RT-Thread support.
  • Build system is updated due to UCOSII version upgrade, the OS/UCOSII/cfg folder
    no longer existed, so no need to include it.

• SoC

  • Update SoC startup and linkscript files to support RT-Thread

• Misc

  • Add SConscript file in Nuclei SDK root, this file is used by RT-Thread package.

Nuclei embedded Software Development Kit, Release 0.2.2

This is release 0.2.2 of Nuclei SDK.

• OS

  • Update UCOSII portable code
  • Now both FreeRTOS and UCOSII are using similar portable code,
    which both use SysTimer Interrupt and SysTimer Software Interrupt.

• Documentation

  • Update documentation about RTOS

Nuclei embedded Software Development Kit, Release 0.2.1

This is release 0.2.1 of Nuclei SDK.

• Build System

  • Add extra linker options -u _isatty -u _write -u _sbrk -u _read -u _close -u _fstat -u _lseek
    in Makefile.conf to make sure if you pass extra -flto compile option, link phase will not fail

• Documentation

  • Add documentation about how to optimize for code size in application development, using demo_eclic
    as example.

• OS

  • Update FreeRTOS to version V10.3.1
  • Update FreeRTOS portable code

• NMSIS

  • Update NMSIS to release v1.0.0-beta1

Nuclei embedded Software Development Kit, Release 0.2.0-alpha

This is release 0.2.0-alpha of Nuclei SDK.

• Documentation

  • Initial verison of Nuclei SDK documentation

  • Update Nuclei-SDK README.md

• Application

  • Add demo_eclic application

  • Add demo_dsp application

  • timer_test application renamed to demo_timer

• Build System

  • Add comments for build System

  • Small bug fixes

• NMSIS

  • Change NMSIS/Include to NMSIS/Core/Include

  • Add NMSIS/DSP and NMSIS/NN header files

  • Add NMSIS-DSP and NMSIS-NN pre-built libraries

Nuclei embedded Software Development Kit, Release 0.1.1

This is release 0.1.1 of Nuclei SDK.

Here are the main features of this release:

• Support Windows and Linux development in command line using Make
• Support development using PlatformIO, see https://github.com/Nuclei-Software/platform-nuclei
• Support Humming Bird FPGA evaluation Board and GD32VF103 boards
  • The Humming Bird FPGA evaluation Board board is used to run evaluation FPGA bitstream of Nuclei N200, N300, N600 and NX600 processor cores
  • The GD32VF103 boards are running using a real MCU from Gigadevice which is using Nuclei N200 RISC-V processor core
• Support different download modes flashxip, ilm, flash for our FPGA evaluation board