Hello everyone.
I started new project - Korsar - hardware interface tool, that is like BusPirate, but with no need for special hardware - its just a firmware for generic esp32, that is cheap and available everywhere (and you already have it at home, right?).
Here is the link to github repo
https://github.com/gcme-bw/korsar .
In this repository you can find code, docs and pre-built binary.
For now it supports I2C and SPI in master mode, and later I plan to add more interfaces and features.
I hope you like it