Sipeed Longan Nano¶

Hardware¶

Platform Nuclei: Find professional RISC-V Processor IP in Nuclei, first professional RISC-V IP company in Mainland China, match all your requirements in AIoT Era.

Configuration¶

Please use gd32vf103c_longan_nano ID for board option in “platformio.ini” (Project Configuration File):

[env:gd32vf103c_longan_nano]
platform = nuclei
board = gd32vf103c_longan_nano

You can override default Sipeed Longan Nano settings per build environment using board_*** option, where *** is a JSON object path from board manifest gd32vf103c_longan_nano.json. For example, board_build.mcu, board_build.f_cpu, etc.

[env:gd32vf103c_longan_nano]
platform = nuclei
board = gd32vf103c_longan_nano

; change microcontroller
board_build.mcu = gd32vf103cbt6

; change MCU frequency
board_build.f_cpu = 108000000L

Uploading¶

Sipeed Longan Nano supports the next uploading protocols:

• altera-usb-blaster

• gd-link

• jlink

• rv-link

Default protocol is rv-link

You can change upload protocol using upload_protocol option:

[env:gd32vf103c_longan_nano]
platform = nuclei
board = gd32vf103c_longan_nano

upload_protocol = rv-link

Debugging¶

Debugging - “1-click” solution for debugging with a zero configuration.

You can switch between debugging Tools & Debug Probes using debug_tool option in “platformio.ini” (Project Configuration File).

Sipeed Longan Nano does not have on-board debug probe and IS NOT READY for debugging. You will need to use/buy one of external probe listed below.

Frameworks¶