CH32V307 floss tools project template

This project provide a functional cmake/ninja project for ch32v307 MCU using standard risc-v gcc toolchain and (for now) WCH openOCD (with wlink and ch32xxx flash support)

Software provides

• RT-Thread 4.1.1 port for risc-v rv32imafc using QingKeV4 (a.k.a. RISC-V4F in WCH literature)
• FPU support (F) and compressed mode support (C)
• Support RISC-V4F fast stack saving/restore on interrupt without the WCH propietary gcc extensions
• UART1 serial over WCHLink
• USB Device support (implementing USB CDC example) via CherryUSB
• Implemented RT-Thread drivers: ADC, DAC, GPIO, SoftI2C, UART
• FinSH shell over UART1

Requeriments

• CMake 3.16 or great
• ninja build tool 1.10.0 or great
• riscv none embed 8.2.0 or great (from WCH or xpack provider)

Build steps

• Create build directory with mkdir build and move to this (cd build)
• Generate cmake project using ninja (or your preferred tool): cmake ../ -G Ninja
• If you preffer gnu make try cmake ../ -G 'Unix Makefile' or replace to your preferred tool)
• Launch ninja to build all of code: ninja
• If all pass ok, the files firmware.elf, firmware.elf.bin and firmware.elf.hex appears in build directory
• Additionally, you found the files firmware.elf.map and firmware.elf.lst containing memmory mapping and disassembler of the ELF file