USB Mass Storage Device with HPS Stack

Xiaofan Chen xiaofanc at gmail.com
Wed Apr 30 00:02:02 UTC 2008


On Wed, Apr 30, 2008 at 3:59 AM, Hans Petter Selasky <hselasky at c2i.net> wrote:
>  Maybe you can get my USB stack working on your PIC board? It now supports the
>  Device Side aswell as the host side! See "usbd_handle_request" in:
>
>  http://www.selasky.org/hans_petter/isdn4bsd/sources/src/sys/dev/usb/usb_transfer.c
>
>  Mass storage driver:
>
>  http://www.selasky.org/hans_petter/isdn4bsd/sources/src/sys/dev/usb/ustorage_fs.c
>

The PIC18F4550 is a lowly 8-bit MCU (12MIPS, 32KB Flash, 2KB SRAM including
USB RAM). So maybe it is too low to run your USB stack's device side.
What is the minimum requirement to run your USB stack's device side?


XIaofan


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