I want to create somthing like usb to lpt (or serial) converter to print with different old printers
So via Cube i create Custom HID project, redefine descriptors like in http://www.usb.org/developers/docs/devclass_docs/usbprint11a021811.pdf
vid\pid from: https://www.xmos.com/download/private/AN00126%3A-USB-Printer-Device-Class%282.0.2rc1%29.pdf
then my board with STM32f103ve mcu defined as printing support device in device manager and intalled driver from microsoft.
But i don't understand how realize bulk transfer (i.e. recive print data from PC) what function form ST USB device library needed to use to recive data via Bulk OUT Endpoint
Maybe you can help?