Fungsi UfxDeviceNotifyHardwareReady (ufxclient.h)

Memberi tahu UFX bahwa perangkat keras sudah siap.

Sintaks

void UfxDeviceNotifyHardwareReady(
  [in] UFXDEVICE UfxDevice
);

Parameter

[in] UfxDevice

Handel ke objek perangkat UFX yang dibuat driver dengan memanggil UfxDeviceCreate.

Nilai kembali

Tidak ada

Keterangan

Driver klien biasanya memanggil UfxDeviceNotifyHardwareReady dari fungsi panggilan balik EvtDeviceD0Entry , seperti yang ditunjukkan dalam contoh berikut.

NTSTATUS
OnEvtDeviceD0Entry (
  _In_ WDFDEVICE Device,
  _In_ WDF_POWER_DEVICE_STATE PreviousState
)
/*++

Routine Description:

    Called by the framework after entering D0 state.

Arguments:

    Device - WDFDEVICE framework handle to the bus FDO.

    PreviousState - The WDF_POWER_DEVICE_STATE from which the stack is
        making this transition.

Return Value:

    Returns STATUS_SUCCESS or an appropriate NTSTATUS code otherwise.

--*/
{
    PCONTROLLER_CONTEXT ControllerContext;

    TraceEntry();

    ControllerContext = DeviceGetControllerContext(Device);

    if (PreviousState > WdfPowerDeviceD1) { 
        DevicePerformSoftReset(Device);

        WdfWaitLockAcquire(ControllerContext->InitializeDefaultEndpointLock, NULL);
        ControllerContext->InitializeDefaultEndpoint = TRUE;
        WdfWaitLockRelease(ControllerContext->InitializeDefaultEndpointLock);
    }

    if (PreviousState == WdfPowerDeviceD3Final) {
        //
        // Notify UFX that HW is now ready
        //
        UfxDeviceNotifyHardwareReady(ControllerContext->UfxDevice);
    }

    TraceExit();
    return STATUS_SUCCESS;
}

Persyaratan

Persyaratan	Nilai
Klien minimum yang didukung	Windows 10
Target Platform	Windows
Header	ufxclient.h
Pustaka	ufxstub.lib
IRQL	DISPATCH_LEVEL