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My tests for the [CH32V003](http://www.wch-ic.com/products/CH32V003.html) with gcc-riscv64. It's 10-cent part with a RV32EC core that runs at 48MHz, has 16kB of flash and 2kB of RAM. It also comes in SOP-8, QFN-20 and SOIC packages.
Still very much a wip, it's a dev environment for the ch32v003 in Linux / WSL that doesn't require any propreitary tooling or [MounRiver Studio(MRS)](http://www.wch-ic.com/products/www.mounriver.com/)
This contains:
1. EVT Folder for running demos from the ch32v003 EVT.
2. Barebones. A project that does not use the HAL or EVT.
3. A demo "minichlink" which uses the WCH CH-Link with libusb exclusively for cross-platform use. (Only tested in Windows right now)
## System Prep
On WSL or Debian based OSes `apt-get install build-essential libnewlib-dev gcc-riscv64-unknown-elf`
## Running
```
cd barebones
make
```
Use the WCH-LinkUtility to flash the built hex file, or if you don't want to use propreitary tooling you can use miniwchlink.
cnlohr
committed
## For using EVT demos, check out the EVT folder.
## WCH-Link
It enumerates as 2 interfaces.
0. the programming interface. I can't get anything except the propreitary interface to work.
1. the usb serial port built in.
If you want to mess with the programming code in Windows, you will have to install WinUSB to the interface 0. Then you can uninstall it in Device Manager under USB Devices.
## miniwchlink
I wrote some libusb copies of some of the basic functionality from WCH-Link, so you can use the little programmer dongle they give you to program the ch32v003.
Currently, it ignores all the respone codes, except when querying the chip. But it's rather surprising how featured I could get in about 5 hours.
Anyone who wants to write a good/nice utility should probably look at the code in this folder.