Hi , We designed a USB host dongle board using STM32F401 MCU. And want to read the data from a APC power device through USB port. We are able to detect Keybaord device through that but look like to read the data from APC power device we need to add the USB power device sub class. Do you have any application or off the shelf driver or code for the USB power device. Which can be ported to STM32 to make it work with APC power device?
