USB_INT -- USB 16C745/765 only
Uses PIR1,USBIF, PIE1,USBIE Registers and Control Bits.
DT's Interrupts MUST be used with PicBasic Pro and MPASM.
The following block of instructions will establish the interrupt used and the PBP label (your ISR) to jump to once interrupt occurs. Remember; all PBP labels or variables used inside ASM code blocks must be preceded by the underscore,( _ServiceUSB). All instruction to the interrupt processor should be in ASM and preceded by the @ symbol and to the far left column of the editor if not included in other ASM code blocks.
Example:
@ INT_DISABLE USB_INT
ASM
INT_LIST macro ;IntSource Label, Type, ResetFlag? INT_Handler USB_INT _ServiceUSB PBP Yes endm INT_CREAT ;Creates the interrupt processor INT_ENABLE USB_INT ;enables USB interrupts
ENDASM
Command functions:
INT_CREATE ;Creates the interrupt processor
INT_ENABLE USB_INT – enable USB interrupt.
INT_DISABLE USB_INT– disable USB interrupt.
INT_CLEAR USB_INT – clear flags
INT_RETURN ---------- To restore and return to the program where interrupt was made.
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