Gecko3 - CCC Event Weblog

E.3. Hostsoftware
#include
31
QGecko : : QGecko ( QObject ∗ parent )
: QObject ( parent )
{
u s b i n i t ( ) ; // i n i t i a l i s i z e t h e l i b u s b
36 geckoAdm = 0 ;
geckoCom = 0 ;
}
41 QGecko : : ˜ QGecko ( )
{
}
//−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
46 // f u n c t i o n s f o r normal communication with t h e gecko board
bool QGecko : : open ( ) {
struct usb bus ∗ b u s s e s ;
u s b f i n d b u s s e s ( ) ;
51 u s b f i n d d e v i c e s ( ) ; // rescan a l l usb t h i n g s
b u s s e s = u s b g e t b u s s e s ( ) ; // r e t u r n s t h e l i s t o f a l l usb b u s s e s
56
struct usb bus ∗ bus ;
for ( bus = b u s s e s ; bus ; bus = bus−>next ) {
struct u s b d e v i c e ∗ dev ;
for ( dev = bus−>d e v i c e s ; dev ; dev = dev−>next ) { // go through a l l b u s s e s and
a l l d e v i c e s and check i f i t i s a gecko
61 i f ( dev−>d e s c r i p t o r . idVendor == ID VENDOR GECKO3) {
i f ( dev−>d e s c r i p t o r . idProduct == ID PRODUCT GECKO3) {
geckoCom = usb open ( dev ) ; //we found a gecko , now we open t h e d e v i c e
char dr name [ 1 0 0 ] ;
int np = u s b g e t d r i v e r n p ( geckoCom , 0 , dr name , 100) ; // checks i f t h e r e
i s a k e r n e l d r i v e r loaded f o r t h i s d e v i c e
66 i f ( np==0) {
u s b d e t a c h k e r n e l d r i v e r n p ( geckoCom , 0) ; // unloads t h e k e r n e l d r i v e r
i f t h e r e i s one . e l s e t h e d e v i c e i s not a v i a b l e f o r us
}
int t = u s b c l a i m i n t e r f a c e ( geckoCom , GECKO COM INTERFACE) ; // bound t h e
i n t e r f a c e from t h e os . now we can use t h i s i n t e r f a c e
i f ( t == 0) {
71 return true ; //end o f s e a r c h i n g f o r d e v i c e s . t h e f i r s t found
d e v i c e i s used
}
else {
return f a l s e ;
}
76 }
}
}
}
return f a l s e ;
81 }
bool QGecko : : c l o s e ( )
{
i f ( geckoCom != 0) {
86 u s b r e l e a s e i n t e r f a c e ( geckoCom , GECKO COM INTERFACE) ; // u n r e g i s t e r t h e i n t e r f a c e
from t h e os
u s b c l o s e ( geckoCom ) ; // c l o s e t h e usb connection
geckoCom = 0 ; // r e s e t s t h e d e v i c e handler so we can d e t e c t t h a t i t i s c l o s e d
Project Report 105