rust on bare metal rv32i

setup

rustup target add riscv32i-unknown-none-elf

build and emulate

initialize for Tang Nano 9K

./configure.py 9k

or Tang Nano 20K

./configure.py 20k

then run

./run.sh

note

• see https://github.com/calint/tang-nano-9k--riscv--cache-psram for FPGA implementation of the RISC-V RV32I for Tang Nano 9K that runs the application
• see https://github.com/calint/tang-nano-20k--riscv--cache-sdram for Tang Nano 20K version
• committed code has been tested in emulator
• tagged versions have been tested in emulator and on hardware

tools

• cargo 1.89.0 (c24e10642 2025-06-23)
• rustc 1.89.0 (29483883e 2025-08-04)