SOFT Problem

Hello I'm a student in intership and my project is to make a usb connection with the DE2 card !

LOOK:

PC (host) -----(usb in serial)---->(DE2, usb device(isp1362))

for Make this systeme I use

Labwindow/cvi fort send the data .

Quartus II Nios II and DE2 CARD with (a cyclone II)

IN the cd I use Cdrom of DE2 card

I use the demo Software for understand the functionning of the Universal serial bus !

this is a link with my project

http://files.filefront.com/pjt+usbzip/;13633905;/fileinfo.html

Look the altera software Send 2 messages add and clear ADD !

http://nsa06.casimages.com/img/2009/04/21/090421042057745026.jpg (http://www.casimages.com)

ADD correspond to : ??????? that is the question :D

Clear correspond to : 0x55 or 0b 1010101

What is the variable of the data is stock ?

what is in the programme ISR.C ("in the link of the project"):

bD13flags.bits.DCP_state

bUSBCheck_Device_State.State_bits.RESET_BITS = 1;

bUSBCheck_Device_State.State_bits.FOUR_RESERVED_BITS=0xcc;

Is possible to explain to me the programme ISR.C please !!

In the globality my project is the to simulate the communication between the computer and one capteur Of ATLAS detector !