On Wed, 06 Aug 2003 13:26:55 +0200, Andy Greensted wrote:

We use a ST7F652 from STM what is full speed USB (12 Mbit). This seems to
require less HW resource than TCP/IP and Ethernet. To avoid writing own
windows drivers we use the buildt - in OS drivers for HID what works well
with interupt transfers. For bulk transfers you can use the mass storage
drivers of the OS and you are also ready with Linux and Apple. To study
the USB standards and write own firmware from the scratch (I did not use
the STM libraries) took me about 6 weeks. I dont like the FTDI chips
becouse it is additional HW chip and not well documented. I first thought
about emulating a FTDI chip and use the FTDI drivers but there is no
information on how the chip is working (just to use as a black box) to
avoid the people from taking the FTDI driver and not buying a FTDI chip.