https://android.googlesource.com/device/google/accessory/adk2012_demo/+/abdfe990f1743e8e918220c7449ff6c806d6f0b2/library/ADK2/usbh.h
library/ADK2/usbh.h - device/google/accessory/adk2012_demo - Git at Google
libraryhdevice
https://weston-embedded.com/cesium-cs-usbh
Cesium Cs/USBH - Weston Embedded Solutions
Real-time USB host software stack for embedded systems equipped with a USB host or OTG controller.
cesiumcswestonembeddedsolutions