/*
* One time call to enable autovectoring for both USB and FIFO/GPIF.
*
* This disables all USB and FIFO/GPIF interrupts and clears
* any pending interrupts too. It leaves the master USB and FIFO/GPIF
* interrupts enabled.
*/
void
setup_autovectors (void)
{
// disable master usb and fifo/gpif interrupt enables
EIUSB = 0;
EIEX4 = 0;
hook_sv (SV_INT_2, (unsigned short) _usb_autovector);
hook_sv (SV_INT_4, (unsigned short) _fifo_gpif_autovector);
// disable all fifo interrupt enables
SYNCDELAY;
EP2FIFOIE = 0; SYNCDELAY;
EP4FIFOIE = 0; SYNCDELAY;
EP6FIFOIE = 0; SYNCDELAY;
EP8FIFOIE = 0; SYNCDELAY;
// clear all pending fifo irqs
EP2FIFOIRQ = 0xff; SYNCDELAY;
EP4FIFOIRQ = 0xff; SYNCDELAY;
EP6FIFOIRQ = 0xff; SYNCDELAY;
EP8FIFOIRQ = 0xff; SYNCDELAY;
IBNIE = 0;
IBNIRQ = 0xff;
NAKIE = 0;
NAKIRQ = 0xff;
USBIE = 0;
USBIRQ = 0xff;
EPIE = 0;
EPIRQ = 0xff;
SYNCDELAY; GPIFIE = 0;
SYNCDELAY; GPIFIRQ = 0xff;
USBERRIE = 0;
USBERRIRQ = 0xff;
CLRERRCNT = 0;
INTSETUP = bmAV2EN | bmAV4EN | bmINT4IN;
// clear master irq's for usb and fifo/gpif
EXIF &= ~bmEXIF_USBINT;
EXIF &= ~bmEXIF_IE4;
// enable master usb and fifo/gpif interrrupts
EIUSB = 1;
EIEX4 = 1;
}
void
hook_timer_tick (unsigned short isr_tick_handler)
{
ET2 = 0; // disable timer 2 interrupts
hook_sv (SV_TIMER_2, isr_tick_handler);
RCAP2H = RELOAD_VALUE >> 8; // setup the auto reload value
RCAP2L = RELOAD_VALUE & 0xFF;
T2CON = 0x04; // interrupt on overflow; reload; run
ET2 = 1; // enable timer 2 interrupts
}