Exemplos de mfp_get_rsr em C++ (Cpp)

Exemplo n.º 1

int
mfp_receive_usart(void)
{
	while (!(mfp_get_rsr() & MFP_RSR_BF))
		__asm("nop");
	return mfp_get_udr();
}

Exemplo n.º 2

int
kbdcngetc(void)
{
	int s;
	u_char ints, c;

	s = splhigh();
	ints = mfp_get_iera();

	mfp_bit_clear_iera(MFP_INTR_RCV_FULL);
	mfp_set_rsr(mfp_get_rsr() | MFP_RSR_RE);
	c = mfp_receive_usart();

	mfp_set_iera(ints);
	splx(s);

	return c;
}

Exemplo n.º 3

int
kbdintr(void *arg)
{
	u_char c, st;
	struct kbd_softc *sc = arg;
	struct firm_event *fe;
	int put;

	/* clear receiver error if any */
	st = mfp_get_rsr();

	c = mfp_get_udr();

	if ((st & MFP_RSR_BF) == 0)
		return 0;	/* intr caused by an err -- no char received */

	/* if not in event mode, deliver straight to ite to process key stroke */
	if (!sc->sc_event_mode) {
		kbdbuf[kbdputoff++ & KBDBUFMASK] = c;
		softint_schedule(sc->sc_softintr_cookie);
		return 0;
	}

	/* Keyboard is generating events.  Turn this keystroke into an
	   event and put it in the queue.  If the queue is full, the
	   keystroke is lost (sorry!). */

	put = sc->sc_events.ev_put;
	fe = &sc->sc_events.ev_q[put];
	put = (put + 1) % EV_QSIZE;
	if (put == sc->sc_events.ev_get) {
		log(LOG_WARNING, "keyboard event queue overflow\n"); /* ??? */
		return 0;
	}
	fe->id = KEY_CODE(c);
	fe->value = KEY_UP(c) ? VKEY_UP : VKEY_DOWN;
	firm_gettime(fe);
	sc->sc_events.ev_put = put;
	softint_schedule(sc->sc_softintr_cookie);

	return 0;
}