USB Design Idea & Thoughts

[NDO News]

Hi All - would appreciate any thought or pointers on the following.

As a part of a project I am thinking to use a number of USB WLAN adapters,
these would not be used as normal, instead they would plug in to my own
little PIC processor board. the idea is a little PIC chip would communicate
with the USB WLAN device, set its parameters and enable it to go on air -
now these devices would all be visible on a main PC with a WLAN card. the
devices would be used for example with a little temperature sensor and would
send back the data to the PC or in some cases with different devices have a
two way communication.

Now I have heard and read some about the Host Controller for the USB
however, I don't see why my little USB and WAN and PIC device needs a Host
Controller as long as the PIC sets up the registers in the USB device and
initialize it to send and receive the data.

If I am on the wrong track, would appreciate some thoughts and feedback on
this.

Thanks very much.
Sean

 

[Wouter van Ooijen (www.vo]

Now I have heard and read some about the Host Controller for the USB
however, I don't see why my little USB and WAN and PIC device needs a Host
Controller as long as the PIC sets up the registers in the USB device and
initialize it to send and receive the data.

And how hould it do that, other than acting as an USB host device?


Wouter van Ooijen

-- ------------------------------------
http://www.voti.nl
Webshop for PICs and other electronics
http://www.voti.nl/hvu
Teacher electronics and informatics

 

[Mike Harrison]

On Tue, 15 Mar 2005 06:52:52 GMT, wouter@voti.nl (Wouter van Ooijen (www.voti.nl)) wrote:

Now I have heard and read some about the Host Controller for the USB
however, I don't see why my little USB and WAN and PIC device needs a Host
Controller as long as the PIC sets up the registers in the USB device and
initialize it to send and receive the data.

And how hould it do that, other than acting as an USB host device?

It would probably be do-able, but be a lot of work, and may need more resources than are available
on all but the high-end PICs.
PC/PCMCIA cards would be MUCH easier to interface to.