Huawei LiteOS - WeAct BluePill Plus

This is a build of Huawei LiteOS 5.1.0 for GD32F303 on WeAct BluePill Plus . The demo does the following:

• led blinks
• usb cdc serial port echoes back all characters
• usb hid device moves the mouse in small circles
• Huawei LiteOS console on serial0 (PA9/PA10)

********Hello Huawei LiteOS********

LiteOS Kernel Version : 5.1.0
build data : Aug 17 2021 10:35:22

**********************************
OsAppInit
cpu 0 entering scheduler
app init!
Hello, welcome to liteos demo!

Huawei LiteOS # 

Installation

Download pre-built binaries from releases, boot in DFU mode, connect a usb-serial adapter to pin PA9/PA10 and install using

stm32flash -w Huawei_LiteOS.hex /dev/ttyUSB0

Developer notes

Patches are relative to Huawei Liteos

Do a make menuconfig, set target family to GD, target to GD32F303RGT6_BearPi.

(Top) → Targets
                          Huawei LiteOS Configuration
    Family (GD)  --->
    Target (GD32F303RGT6_BearPi)  --->
[ ] Qspi peripherals
[*] Enable Floating Pointer Unit
[*] Enable Access Permission Control
[ ] Enable Flash Patch

Makefile

Create binaries in intel hex format.

Makefile.patch

link script

The linker script is incomplete. This patch is needed to link.

GD32F303RGT6_BearPi.patch

WeAct BluePill-Plus

GD32F303RGT6_BearPi has a LED on pin PB0, WeAct BluePill Plus has a LED on pin PB2. This patch puts the led on pin PB2. Apply this patch if compiling for WeAct BluePill Plus. Skip this patch if compiling for GD32F303RGT6_BearPi.

WeActBluePillPlus.patch

usb device

The GD32F303 usb hardware seems register-compatible with STM32F103. The usb stack used is libusb_stm32, configuration is same as for STM32F103.

libusb_stm32 is a device-only usb stack for stm32 arm, optimized for speed and size. Compare with Ha thach tinyusb.

Compiling

Huawei LiteOS 5.1.0 was compiled using gcc-9.4.0 and gcc-arm-none-eabi-9-2020-q2-update:

export PATH=/opt/xpack-arm-none-eabi-gcc-9.3.1-1.1/bin/:/opt/gcc-9.4.0/bin/:$PATH
make GCCLIB_PATH_32=/opt/xpack-arm-none-eabi-gcc-9.3.1-1.1/lib/gcc/arm-none-eabi/9.3.1/ CXXLIB_PATH_32=/opt/xpack-arm-none-eabi-gcc-9.3.1-1.1/arm-none-eabi/lib/

Firmware

Download firmware with a debugger or using a usb-serial converter.

To download via the serial port, connect a usb serial to the WeAct BluePill Plus:

• RXD to pin A9
• TXD to pin A10

Do not provide power via the USB connector and the +5V pin at the same time, or you risk short-circuit.

Boot in DFU mode:

• press BOOT0 button
• press RESET
• release RESET
• release BOOT0

Download the intel hex file via DFU. On linux:

stm32flash -w out/GD32F303RGT6_BearPi/Huawei_LiteOS.hex /dev/ttyUSB0

Reboot and you should have the LiteOS prompt on the serial port.

not truncated