Luckfox_LDD

Linux device driver on Luckfox pico ultra.

Prepare SDK for SoC

Current OS im using is Ubuntu 22.04

Install dependencies

   sudo apt update

   sudo apt-get install -y git ssh make gcc gcc-multilib g++-multilib module-assistant expect g++ gawk texinfo libssl-dev bison flex fakeroot cmake unzip gperf autoconf device-tree-compiler libncurses5-dev pkg-config bc python-is-python3 passwd openssl openssh-server openssh-client vim file cpio rsync

Obtain the latest SDK

   git clone https://github.com/LuckfoxTECH/luckfox-pico.git

Compile SDK My board is Luckfox Pico Ultra W

   giahuy@GiaHuy:~/workspace/Embedded_Linux/Luckfox/luckfox-pico$ ./build.sh lunch
   ls: cannot access 'BoardConfig*.mk': No such file or directory
   You're building on Linux
   Lunch menu...pick the Luckfox Pico hardware version:
   选择 Luckfox Pico 硬件版本:
               [0] RV1103_Luckfox_Pico
               [1] RV1103_Luckfox_Pico_Mini_A
               [2] RV1103_Luckfox_Pico_Mini_B
               [3] RV1103_Luckfox_Pico_Plus
               [4] RV1103_Luckfox_Pico_WebBee
               [5] RV1106_Luckfox_Pico_Pro
               [6] RV1106_Luckfox_Pico_Max
               [7] RV1106_Luckfox_Pico_Ultra
               [8] RV1106_Luckfox_Pico_Ultra_W
               [9] custom
   Which would you like? [0~9][default:0]: 8
   Lunch menu...pick the boot medium:
   选择启动媒介:
               [0] EMMC
   Which would you like? [0][default:0]: 0
   Lunch menu...pick the system version:
   选择系统版本:
               [0] Buildroot(Support Rockchip official features) 
               [1] Ubuntu(Support for the apt package management tool)
   Which would you like? [0~1][default:0]: 0
   [build.sh:info] Lunching for Default BoardConfig_IPC/BoardConfig-EMMC-Buildroot-RV1106_Luckfox_Pico_Ultra_W-IPC.mk boards...
   [build.sh:info] switching to board: /home/giahuy/workspace/Embedded_Linux/Luckfox/luckfox-pico/project/cfg/BoardConfig_IPC/BoardConfig-EMMC-Buildroot-RV1106_Luckfox_Pico_Ultra_W-IPC.mk
   [build.sh:info] Running build_select_board succeeded.

Now the Linux kernel source or headers is ready!
Prepare toolchain for SoC

The SDK already include toolchain in folder luckfox-pico/tools/linux/toolchain/arm-rockchip830-linux-uclibcgnueabihf. However we can download from site.
Download toolchain package

Version Buildroot: Download link

Unzip toolchain package

   #-C ~/ specifies the unzip path 
   tar zxvf arm-rockchip830-linux-uclibcgnueabihf.tar.gz -C ~/tools/

Include path to kernel header folder to make vscode warning silent.

in file c_cpp_properties.json i added my path "/home/giahuy/workspace/Embedded_Linux/Luckfox/luckfox-pico/sysdrv/source/kernel/include". So it looks like this:

"includePath": [
      "${workspaceFolder}/**",
      "/home/giahuy/workspace/Embedded_Linux/Luckfox/luckfox-pico/sysdrv/source/kernel/include"
]

References

https://lwn.net/Kernel/LDD3/
https://sysplay.github.io/books/LinuxDrivers/book/index.html
https://embetronicx.com/linux-device-driver-tutorials/
https://wiki.luckfox.com/luckfox-pico/luckfox-pico-quick-start/
https://www.blackbox.ai/ (so cool 😎)

Luckfox_LDD

Prepare SDK for SoC

Prepare toolchain for SoC

Include path to kernel header folder to make vscode warning silent.

References