Hbird E203 + RT-Thread on Lichee Tang (EG4S20)
\ | /
- RT - Thread Operating System
/ | \ 3.1.3 build Nov 25 2020
2006 - 2019 Copyright by rt-thread team
Hello RT-Thread!
msh >
This repo aims to run RT-Thread (RTOS) on HBird E203 (蜂鸟 E203) soft core (荔枝糖 EG4S20 FPGA).
HBird E203 is an open source RISC-V CPU core, and RT-Thread is a burgeoning Real-Time Operating System (RTOS) in China that is small, stable and fast.
Step 0 - Clone and initialize git submodules
This repo consists of two sub-repos. One is the FPGA soft core (HBird E203), and the other is the firmware (RT-Thread).
$ git clone https://github.com/wuhanstudio/hbird_e203_tang
$ cd hbird_e203_tang
$ git submodule init
$ git submodule update
Step 1 - Upload FPGA bitstream
The IDE can be downloaded here, and instructions on how to install it can be found here.
Click on Generate Bitstream, then choose download to flash the bitstream to your board.
Now FPGA is now a RISC-V development board.
Step 2 - Build and compile rt-thread firmware
Connect your board with JTAG. here's the pin map.
Let's build the firmware. Instructions on how to set up the toolchain can be found here
$ cd hbird-sdk/application/rtthread/msh/
$ export NUCLEI_TOOL_ROOT=/opt/nuclei/ # replace with your path
$ export PATH=$NUCLEI_TOOL_ROOT/gcc/bin:$NUCLEI_TOOL_ROOT/openocd/bin:$PATH
$ make SOC=hbird BOARD=hbird_eval CORE=e203 upload
That's it ! Congratulations !