Hi,

I am trying to set-up a USB Interupt on a 18F4550. I want a programm interruption on USB bus activity. My problem it seems that i don't haveset the right register.

Ofr example : how do you access to UIE register in PBP ?


here is my
Code:
DEFINE OSC 48                    ' oscillateur ‡ 48 Mhz
 

LEDalim VAR PORTA.4                ' LED alim
USBbuffer var byte
USBcount var byte
 
USBINIT ' initialise USB...

INTCON = %10000000 ' Enable RB0 interrupt 

PIR2=0 

ASM
 bsf UIE,2  ' Is it right ?
endASM

ON INTERRUPT GOTO myint

loop
USBservice          ' a simple loop /keep alive USB
goto loop

disable
myint:
DoUSBIn:
   USBCount=1   ; 1 byte
   USBSERVICE                                    ' keep connection alive
   USBIN 3, USBBuffer,USBCount,DoUSBIn   ' read data, if available
   
   
DoUSBOut:
   USBCount=1   ; 
   USBSERVICE                                    ' keep connection alive
   USBout 3, USBBuffer,1,DoUSBOut   ' send data, if available 
   
PIR2=0  
 
   resume
enable

Is there something wrong ?

For information : i used CDC comminication ( virtual COMport) and usually the USB communication work fine.