访问Linux / dev / USB作为标准文件以与USB设备通信

I'm researching ways to communicate with a USB device in Linux and would prefer to not write a Linux Kernel driver. I understand that libusb exists and is a user-land library that would work, but our embedded device doesn't support usbfs ( and would be really a pain to change kernels to add the support ).I'm researching ways to communicate with a USB