Any USB device could auto write to PC ?

Depends how much data and how fast. Perhaps use an FTD232/245 to send the data, write a program on the PC that takes whatever you send via the selected chip, and stuff it wherever seems best at the time.

JS

That still won't solve the auto run problem.

Put an autoexec.bat (or something like that) in the mass storage device and map the device space into the USB drive. You can use separate logical devices for the above functions.

The autorun method should doable, however, my upcoming problem is need a USB host chip to work as a USB storage, right ? and I need to remove this cost.

Is there any windows embedded driver for something like the USB on-the- go, I mean the design (USB device can auto push data to PC ) can work for Windows without any additional driver.

Thanks. Boki.

write your own driver.

Bye. Jasen

autorun is unreliable, after the sony music rootkit fiasco many have it turned off.

maybe a combination of HID to send the commands to initiate the transfer and USB-storage to provide the data.

this still requires that there is a user logged in.

what you are trying to do sounds like a very bad idea.

Bye. Jasen