Nut upsdev - Dec 2008 - USBHID-PDU datagram

Hello *,

I have my "24V DC modular ATX PSU" running yet and  it  collect 
already
the data form the DS1780 and MAX1036/8.  The Microcontroller is a  Maxim
Integrated Device DS89C450 and the USB-Controller a MAX3420E which works
over SPI Bit-Banging.

OK, this is now working and enumeration is done...  ;-)

Now since the PSU is a "Function" I was looking into  the  Linux 
Gadget
driver how HID is done and  if  I  plug  in  my  PSU,  I  see  Linux  is
registering my Device/Function.

Now I have to code the the USBHID-PDU stuff but I have nothing found on
the Net HOW TO CODE A "Function" but the Host-Part...

I have tried to modify the USBHID-INPUT (keyboard) code but it seems not
to work...  Also I have tried to use the "Appendix E" from  the 
"Device
Class Definition for HID" version 1.1 and modify it to my needs.  Also I
am currently rereading the "Usage Tables for HID Power Devices" v1.0.

So can anyone tell me how the USBHID-PDU data comes into the Host?

I can analyse it and maybe I get this stuff running since I like  to  go
in production before May 2009.  (I need urgently money)

And yes, the USBHID-PDU part is the last thing missing in the project.

Thanks, Greetings and nice Day/Evening
    Michelle Konzack
    Systemadministrator
    24V Electronic Engineer
    Tamay Dogan Network
    Debian GNU/Linux Consultant


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On Tue, Dec 30, 2008 at 10:12 AM, Michelle Konzack
<linux4michelle at tamay-dogan.net> wrote:
> I have tried to modify the USBHID-INPUT (keyboard) code but it seems not
> to work...
This is like calling a plumber and asking what is wrong with the
radiator in your car. They might be able to deduce what is wrong, but
they're going to need a lot more information.

Can you post some information on this USBHID-INPUT code?

Also (and this is just me talking from personal experience - I am not
speaking for the group) if you are trying to put a device into
production, and you have a timeline, it is best to contract with
someone who has worked directly with the technology you are trying to
use. Most of the NUT developers are more experienced with coding for
the host side of USB (rather than device side), and I suspect that
those who have written device-side code have not had much experience
with the Gadget API.

-- 
- Charles Lepple