Android USB Virtual COM port on an Archos?

is there any option to have Virtual COM port Host on Android that would communicate with a connected device(via cable and physical USB unterface) in a virtual COM port way (fileopen/fileread/filewrite/fileclose)? I believe that kernel recon开发者_开发知识库figuring/recompiling is not possible

There is no option for doing that. We gave up and change software on a device from classical RS232 to HID and now it works.