Getting Started with NUC980 Development Based on RT-Thread

Introduction

New Tang Technology provides an industrial IoT development platform using the NUC980DK61Y microprocessor. This is a complete industrial IoT development platform that includes comprehensive hardware design and software reference design. The core is a NUC’s ARM9 MPU with a speed of 300 MHz, built-in 64 MB DDR memory, a single 10/100 Ethernet port, 2 high-speed USB hosts, a 1 Gb SPI NAND Flash storage device, microphone input, stereo headphone output, and Arduino compatible interfaces.

The appearance of the development board is shown in the figure below:

The commonly used on-board resources of this development board are as follows:

• MPU:

  NUC980DK61Y, clock speed 300MHz, embedded 64MB DDR SDRAM

• External devices:

  1Gbit SPI-NAND Flash, NAU8822 Audio Codec

• Common peripherals

• LED:

  3 pieces

• Buttons:

  3 pieces

• Common interfaces:

  Arduino, USB to serial, RJ-45 interface, 1xUSB host 2.0, 1xUSB Dual-role 2.0, Micro SD.

• Debugging interface:

  External J-link debugging or using NuWriter burning software, SDRAM download.

Software and Hardware Requirements

Software Requirements

• Windows 10 operating system.

• Env RT-Thread development auxiliary tools.

• Arm MDK v5 (or v4) – project compilation software.

  (Optional)

• RT-Thread Studio (Optional)

• Terminal connection tools, such as Tera Term.

• RT-Thread source code.

Hardware Requirements

• NK-980IoT development board.

• 2 USB Micro data transfer cables.

(Video explanation version)

Preparation Work

The NK-980IoT board support package provides MDK5 and GCC development environments, introducing how to run the sample program. Before running the sample program, the following preparations are needed:

• Source code acquisition

  Run git clone in the env window to copy the program to the local end. Source code directory description

   git clone https://github.com/RT-Thread/rt-thread

• Development environment

  Supports GCC, MDK5, RT-Thread Studio development environments.

• IDE/Compiler	Tested version
  MDK5	5.26.2
  GCC	GCC 5.4.1 20160919 (release)
  RT-Thread Studio

• PC connection

  Use two USB cables to connect the development board’s VCOM and USB0 Device/HOST port to the PC.

Run On-board Function Demonstration

• Download the corresponding project suite

  Execute the following command to download the project-related files.

    # cd rt-thread
    # cd bsp/nuvoton/nk-980iot
    # menuconfig --generate
    # pkgs --update
    Cloning into 'C:\rt-thread\bsp\nuvoton\nk-980iot\packages\netutils-latest'...
    remote: Enumerating objects: 442, done.
    remote: Total 442 (delta 0), reused 0 (delta 0), pack-reused 442R
    Receiving objects: 100% (442/442), 8.15 MiB | 36.00 KiB/s, done.
    Resolving deltas: 100% (237/237), done.
    ==============================>  FAL v0.4.0 is downloaded successfully.
    ==============================>  netutils update done
    Operation completed successfully.

• GCC compile project

  Execute the following commands to compile the project with gcc, the generated file will be rtthread.bin.

    # cd rt-thread
    # cd bsp/nuvoton/nk-980iot
    # scons
    …
    …
    LINK rtthread.elf
    arm-none-eabi-objcopy -O binary rtthread.elf rtthread.bin
    arm-none-eabi-size rtthread.elf
       text    data     bss     dec     hex filename     245020    4556   10260  259836   3f6fc rtthread.elf
    scons: done building targets.

    <Path-to-rt-thread>\bsp\nuvoton\nk-980iot\rtthread.bin

• MDK5 compile project

  Generate MDK5 project files by selecting the following commands. The MDK project files will be generated in this directory, with the filename project.uvprojx.

    # cd rt-thread
    # cd bsp/nuvoton/nk-980iot
    # scons --target=mdk5 –s

    <Path-to-rt-thread>\bsp\nuvoton\nk-980iot\project.uvprojx

Using NuWriter Tool

Before performing the following operations, set the Power-on setting to USB booting. Download NuWriter

Download firmware to SDRAM address

Step 1: Choose download type Choose type: DDR/SRAM.

Step 2: Press Re-Connect.

Step 3: Choose Choose file: Specify path of your rtthread.bin file..

Step 4: Input Execute Address: 0x0.

Step 5: Press Option: Download and run.

Step 6: Press Download.

Step 7: Check if RT-Thread is running.

Burn firmware to SPI NAND Flash

Step 1: Choose download type Choose type: SPINAND.

Step 2: Press Re-Connect.

Step 3: Press Erase

Step 4: Choose Erase All

Step 5: Press OK

Step 6: Choose Choose file: Specify path of uboot-spl.bin file..

Step 7: Select Image Type: Loader

Step 8: Input Execute Address: 0x200.

Step 9: Press Program and wait for completion.

Step 10: Choose Choose file: Specify path of uboot.bin file..

Step 11: Select Image Type: Data

Step 12: Input Image start address: 0x100000.

Step 13: Press Program and wait for completion.

Step 14: Choose Choose file: Specify path of rtthread.bin file..

Step 15: Select Image Type: Data

Step 16: Input Image start address: 0x200000.

Step 17: Press Program and wait for completion.

Step 18: Choose Choose file: Specify path of env.txt file..

Step 19: Select Image Type: Environment

Step 20: Input Image start address: 0x80000.

Step 21: Press Program and wait for completion.

Step 22: Set Power-on setting to SPI NAND booting

Step 23: Press Reset button.

Step 24: Check if rtthread is running.

U-boot settings for SPI NAND booting

.....
setspi=sf probe 0 75000000
loadkernel=nand read 0x80000000 0x200000 0x200000
bootcmd=run loadkernel;go 0
watchdog=off
.....

Burn firmware to SPI NOR Flash (the board needs to replace NOR flash and solder)

Step 1: Choose download type Choose type: SPI.

Step 2: Press Re-Connect.

Step 3: Choose Choose file: Specify path of your rtthread.bin file..

Step 4: Select Image Type: Loader

Step 5: Input Execute Address: 0x0.

Step 6: Press Program and wait for completion.

Step 7: Set Power-on setting to SPI NOR booting.

Step 8: Press Reset button.

Step 9: Check if RT-Thread is running.

Run

Use Tera Term terminal software to operate the rt-thread finsh/msh command line function. The configuration of the serial port is shown in the figure. (Note: The corresponding serial port number of the Nuvoton Virtual Com Port can be found in the device manager. For example: Serial port number is COM30, 115200N81.)

In the console, use the ifconfig command to print the obtained IP address, and use the ping command to test the gateway connection.

You can add the WeChat ID of the junior brother, indicating nuc980, to join the Nuvoton @RT-Thread group chat