Versaloon is a full-opensource platform for multiple applications, including a programmer, debugger, logic tester, logic analyzer and simple oscilloscope. It’s based on generic USB_TO_XXX protocol, which can support more than 10 kinds of interfaces including JTAG, SWD, SPI, IIC and so on.
USB_TO_XXX is not only used to control these interfaces, but also it can play in one command a complex timing on multiple interfaces with some high-level functions(accurate time control, polling, nesting, compare/verify and so on).