Add support for Nuclei RISC-V Processor development platform

Feature Request

Hi, we have developed several RISC-V processors called Nuclei, covering from low-end to high-end use cases.

We have supported three boards:

• HummingBird FPGA evaluation board which will run Nuclei N/NX processor FPGA bitstream file
• Nuclei RV-Star Evaluation Board
• GD32VF103V Evaluation Board which this MCU on board is based on our Nuclei RISC-V Processor Core

Our support for Nuclei Platform currently is using our Nuclei Embedded Software Development Kit, and you can find our support repo here: https://github.com/Nuclei-Software/platform-nuclei.

Currently, our software development tools are kept in github release here: https://github.com/Nuclei-Software/platform-nuclei/releases/tag/nuclei_tools_v0.1.0-alpha.

I think we still missing the following tasks need to be done:

• Add information about nuclei platform and boards to main documentation
• Add information about nuclei platform and boards to PlatformIO Web Site

Questions

And during the support, I also found that debugging in VSCode is slower than debugging in GNU MCU Eclipse with RISC-V support, even we are using the same openocd and riscv-gdb tool, and also open all the windows like registers, call stacks, peripherals, variables, etc, VSCode is much slower than Eclipse, do you have any experiences in these?

I also found that in these line of code: https://github.com/platformio/platformio-core/blob/develop/platformio/commands/debug/server.py#L73-L75

            args.extend(
                ["-c", "gdb_port pipe; tcl_port disabled; telnet_port disabled"]
            )

In openocd manual, it suggest to write the openocd file into log file in order to ensure that the pipe is not saturated when using higher debug level outputs, I tried to modify it like this:

            args.extend(
                ["-c", "gdb_port pipe; log_output openocd.log; tcl_port disabled; telnet_port disabled"]
            )

Then the debug server connection speed and download speed will be faster than before, if you use load command, with previous version, the download speed will be 1 KB/s, but after my modification, it will be 7KB/s.

• Download Speed Before

• Download Speed Now

• Debug is really slow in VSCode, when all debug windows are clicked and opened

Thanks Huaqi

[fanghuaqi]

Done with our website, now we also have english version website.

Thanks Huaqi

[fanghuaqi]

BTW, here is our company’s logo, could you also add it into https://platformio.org/ when you accept this feature?