Re: Raspberry Pi ACT LED

[Sujit K M <sjt.kar%gmail.com@localhost>]

> bcm_dmac_transfer(sc->sc_dmac);
> LED_ON();
>    while (sc->sc_state == EMMC_DMA_STATE_BUSY) {
>    error = cv_timedwait(&sc->sc_cv, &sc->sc_lock, hz * 10);
>    if (error == EWOULDBLOCK) {
>    device_printf(sc->sc.sc_dev, "transfer timeout!\n");
>    bcm_dmac_halt(sc->sc_dmac);
>    sc->sc_state = EMMC_DMA_STATE_IDLE;
>    error = ETIMEDOUT;
>    break;
>    }
> }
> LED_OFF();
> mutex_exit(&sc->sc_lock);

I hope you know C Language. Here an LED_ON() and LED_OFF() is being
called during the datatransfer.