This is release version 0.3.2 of Nuclei SDK.

• Build

  • Important changes about build system:

    • The SoC and RTOS related makefiles are moving to its own folder, and controlled By build.mk inside in in the SoC/<SOC> or OS/<RTOS> folders.
    • Middlware component build system is also available now, you can add you own middleware or library into Components folder, such as Components/tjpgd or Components/fatfs, and you can include this component using make variable MIDDLEWARE in application Makefile, such as MIDDLEWARE := fatfs, or MIDDLEWARE := tjpgd fatfs.
    • Each middleware component folder should create a build.mk, which is used to control the component build settings and source code management.
    • An extra DOWNLOAD_MODE_STRING macro is passed to represent the DOWNLOAD mode string.
    • In startup_<Device>.S now, we don't use DOWNLOAD_MODE to handle the vector table location, instead we defined a new macro called VECTOR_TABLE_REMAPPED to stand for whether the vector table's vma != lma. If VECTOR_TABLE_REMAPPED is defined, the vector table is placed in .vtable_ilm, which means the vector table is placed in flash and copy to ilm when startup.

  • Change openocd --pipe option to -c "gdb_port pipe; log_output openocd.log"

  • Remove -ex "monitor flash protect 0 0 last off" when upload or debug program to avoid error when openocd configuration file didn't configure a flash

  • Add cleanall target in <NUCLEI_SDK_ROOT>/Makefile, you can clean all the applications defined by EXTRA_APP_ROOTDIRS variable

  • Fix size target of build system

• Tools

  • Add nsdk_cli tools in Nuclei SDK which support run applications

    • tools/scripts/nsdk_cli/requirements.txt: python module requirement file
    • tools/scripts/nsdk_cli/configs: sample configurations used by scripts below
    • tools/scripts/nsdk_cli/nsdk_bench.py: nsdk bench runner script
    • tools/scripts/nsdk_cli/nsdk_execute.py: nsdk execute runner script

• SoC

  • Add general bit operations and memory access APIs in <Device>.h, eg. _REG32(p, i), FLIP_BIT(regval, bitofs)
  • DOWNLOAD_MODE_xxx macros are now placed in <Device>.h, which is removed from riscv_encoding.h, user can define different DOWNLOAD_MODE_xxx according to its device/board settings.
  • DOWNLOAD_MODE_STRING are now used to show the download mode string, which should be passed eg. -DOWNLOAD_MODE_STRING=\"flash\", it is used in system_<Device>.c
  • DOWNLOAD_MODE_xxx now is used in startup_<Device>.S to control the vector table location, instead a new macro called VECTOR_TABLE_REMAPPED is used, and it should be defined in SoC/<SOC>/build.mk if the vector table's LMA and VMA are different.

• NMSIS

  • Bump NMSIS to version 1.0.2

• OS

  • Fix OS task switch bug in RT-Thread

For detailed changes, please check commit histories since 0.3.1 release.