You are reading a single comment by @FyberChris and its replies.
Click here to read the full conversation.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@FyberChris
Well the F401C isn't talking. Are the ST sources you have for F4 from an old version of the STM32Cube? All of the new source looks quite different and the USB host and device files are not very similar at all.