Reverse-Engineering SWIO: Why Existing CH32V003 Programmers Fail and How I Built One That Works

I wanted to see if an ESP32-S3 could be used as a programmer for the WCH CH32V003 instead of using a dedicated WCH-Link. The final setup is: PC → ESP32-S3 → SWIO → CH32V003 The ESP32-S3 handles the ti...