A device flashing tool for the hc32l110 series MCUs

basic usage: This tool will flash elf / raw binaires to a HC32L110 series MCU via their built-in serial protocol. In order to do this you'll need a usb/ttl virtual com port module. I've successfully used both a CH340 and Raspberry Pi pico. The chip / serial module should be wired together as such:

Serial.DTR/RTS => MCU.P00/RESET
Serial.V+ =>  MCU.V+ 
Serial.GND => MCU.GND
Serial.RXD => MCU.P35
Serial.TXD => MCU.P36

once thats done the tool can be invoked as such hc32tool download my_app.elf COM7 While I've not tested the application under linux the underlying serial port library System.IO.Ports is supposed to accept standard tty device paths.

about baud rate: The HC32l110 series UART modules are very limited and coupled to the system clock. My experience is that the default 4mhz clock is only stable up to about 115200 baud which is the default. This produces about a 3s load time for a 16k test rom.

This project targets dotnet core 6. Once you have the sdk installed you should be able to build by running dotnet build from within the folder containing hc32tool.csproj. This should restore all required nuget packages, and produce an executable in the bin\Debug\net6.0 folder

I havent gotten around to putting together a build pipeline. Once I do, there should be binaries available for windows and linux.