PINE64 StarPro64

PINE64 StarPro64 is a RISC-V Single-Board Computer based on the ESWIN EIC7700X RISC-V SoC with Quad-Core 64-bit RISC-V CPU, 32 GB LPDDR5 RAM and 100 Mbps Ethernet.

Features

• System on Chip: ESWIN EIC7700X
• Processors: 4 x RV64GC 1.4 GHz 64-bit RISC-V Cores
• NPU: 19.95 TOPS INT8
• Memory: 32 GB 64-bit LPDDR5
• Storage: 1 x microSD Connector, 1 x eMMC Pad
• Network: 2 x GMAC, RGMII supported
• PCI Express: 4-lane PCIe 3.0 (RC + EP)
• Wireless: WiFi, Bluetooth
• USB: USB 2.0 and 3.0
• GPIO: Full GPIO Header

Serial Console

A USB Serial Adapter (CH340 or CP2102) is required to run NuttX on StarPro64.

Connect the USB Serial Adapter to StarPro64 Serial Console at:

USB Serial StarPro64 Pin

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GND Pin 6 (GND) RX Pin 8 (UART0 TX) TX Pin 10 (UART0 RX)

On the USB Serial Adapter, set the Voltage Level to 3V3.

Connect StarPro64 to our computer with the USB Serial Adapter. On our computer, start a Serial Terminal and connect to the USB Serial Port at 115.2 kbps:

 screen /dev/ttyUSB0 115200

NuttX will appear in the Serial Console when it boots on StarPro64.

RISC-V Toolchain

Before building NuttX for StarPro64, download the toolchain for xPack GNU RISC-V Embedded GCC (riscv-none-elf).

Add the downloaded toolchain xpack-riscv-none-elf-gcc-.../bin to the PATH Environment Variable.

Check the RISC-V Toolchain:

 riscv-none-elf-gcc -v

Building

To build NuttX for StarPro64, [[in](`in.md)stall the prerequisites </quickstart/install>]{.title-ref} and [[clone the git repo](`clone the git repo.md)sitories </quickstart/install>]{.title-ref} for nuttx and apps.

Configure the NuttX project and build the project:

 cd nuttx
 tools/configure.sh starpro64:nsh
 make

This produces the NuttX Kernel nuttx.bin. Next, build the NuttX Apps Filesystem:

 make export
 pushd ../apps
 tools/mkimport.sh -z -x ../nuttx/nuttx-export-*.tar.gz
 make import
 popd
 genromfs -f initrd -d ../apps/bin -V "NuttXBootVol"

This generates the Initial RAM Disk initrd.

Package the NuttX Kernel and Initial RAM Disk into a NuttX Image:

 head -c 65536 /dev/zero >/tmp/nuttx.pad
 cat nuttx.bin /tmp/nuttx.pad initrd >Image-starpro64

The NuttX Image Image-starpro64 will be copied to the TFTP Server in the next step.

Booting

To boot NuttX on StarPro64, install a TFTP Server on our computer.

Copy the file Image-starpro64 from the previous section to the TFTP Server, together with the Device Tree:

 wget https://github.com/lupyuen/nuttx-starpro64/raw/refs/heads/main/eic7700-evb.dtb
 scp Image-starpro64 \
   tftpserver:/tftpfolder/Image-starpro64
 scp eic7700-evb.dtb \
   tftpserver:/tftpfolder/eic7700-evb.dtb

Check that StarPro64 is connected to our computer via a USB Serial Adapter at 115.2 kbps:

 screen /dev/ttyUSB0 115200

When StarPro64 boots, press Ctrl-C until U-Boot stops. At the U-Boot Prompt, run these commands to boot NuttX over TFTP:

# Change to your TFTP Server
 setenv tftp_server 192.168.x.x
 saveenv
 dhcp {kernel_addr_r} {tftp_server}:Image-starpro64
 tftpboot {fdt_addr_r} {tftp_server}:eic7700-evb.dtb
 fdt addr {fdt_addr_r}
 booti {kernel_addr_r} - {fdt_addr_r}

Or configure U-Boot to boot NuttX automatically.

NuttX boots on StarPro64 and NuttShell (nsh) appears in the Serial Console. To see the available commands in NuttShell:

 help

Configurations

nsh

Basic configuration that runs NuttShell (nsh). This configuration is focused on low level, command-line driver testing. Built-in applications are supported, but none are enabled. Serial Console is enabled on UART0 at 115.2 kbps.

Peripheral Support

NuttX for StarPro64 supports these peripherals:

Peripheral Support NOTES

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UART Yes