Gecko3 - CCC Event Weblog

E.1. Firmware
i f (SETUPDAT[ 2 ] == 0)
{
321 ∗(BYTE xdata ∗) epcs (SETUPDAT[ 4 ] ) &= ˜bmEPSTALL;
EZUSB RESET DATA TOGGLE( SETUPDAT[ 4 ] ) ;
}
else
EZUSB STALL EP0 ( ) ; // S t a l l End Point 0
326 break ;
}
break ;
case SC SET FEATURE : // ∗∗∗ Set Feature
i f ( DR SetFeature ( ) )
331 switch (SETUPDAT[ 0 ] )
{
case FT DEVICE : // Device
i f (SETUPDAT[ 2 ] == 1)
Rwuen = TRUE; // Enable Remote Wakeup
336 else i f (SETUPDAT[ 2 ] == 2)
// Set Feature Test Mode . The core h andles t h i s r e q u e s t .
However , i t i s
// n e c e s s a r y f o r t h e firmware to complete t h e handshake phase o f
t h e
// c o n t r o l t r a n s f e r b e f o r e t h e c hip w i l l e n t e r t e s t mode . I t i s
a l s o
// n e c e s s a r y f o r FX2 to be p h y s i c a l l y d i s c o n n e c t e d (D+ and D−)
341 // from t h e h o s t b e f o r e i t w i l l e n t e r t e s t mode .
break ;
else
EZUSB STALL EP0 ( ) ; // S t a l l End Point 0
break ;
346 case FT ENDPOINT: // End Point
∗(BYTE xdata ∗) epcs (SETUPDAT[ 4 ] ) |= bmEPSTALL;
break ;
}
break ;
351 default : // ∗∗∗ I n v a l i d Command
i f (DR VendorCmnd ( ) )
EZUSB STALL EP0 ( ) ; // S t a l l End Point 0
}
356 // Acknowledge handshake phase o f d e v i c e r e q u e s t
EP0CS |= bmHSNAK;
}
// Wake−up i n t e r r u p t handler
361 void r e s u m e i s r ( void ) i n t e r r u p t WKUP VECT
{
EZUSB CLEAR RSMIRQ( ) ;
}
E.1.2. Firmware
1 #pragma NOIV // Do not g e n e r a t e i n t e r r u p t v e c t o r s
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∗ Gecko3 SoC HW/SW Development Board
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∗ | ( ) ) | ( | | | | Berne U n i v e r s i t y o f Applied S c i e n c e s
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11 ∗
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Project Report 63