Hi All,
I'd like to drive keyboard/mouse devices and add the
WaitForInput of EFI_SIMPLE_POINTER_PROTOCOL into gBS->WaitForEvent(). So I
wrote a sample code below.
I found if I keep the "*Print(L"\n");*" in my code, both RelativeMovementX
and RelativeMovementY could be printed.
But once removing "*Print(L"\n");*", the Status of "Not Ready" would be
returned by MouseInterface->GetState.
I have no idea why the "Print \n" can cause the difference.
**I ran the code in my server with EFI shell.
Can anyone help me on this? Thanks.
**
--
*Timer[0] = MouseInterface->WaitForInput;
Timer[1] = gST->ConIn->WaitForKey;
while (1) {
UINTN index;
gBS->WaitForEvent(2, Timer, &index);
Print(L"\n");*
* if (index == 0) {
Status = MouseInterface->GetState(MouseInterface, &MouseState);*
* if (!EFI_ERROR (Status)) {
Print(L"(%d,%d)\n", MouseState.RelativeMovementX,
MouseState.RelativeMovementY);
} else {*
* Print(L"%r\n", Status);*
* }
} else if (index == 1) {
Status = gST->ConIn->ReadKeyStroke(gST->ConIn, &Key);
if (!EFI_ERROR (Status)) {
Print(L"[%X,%X]\n", Key.ScanCode, Key.UnicodeChar);
if (Key.ScanCode == SCAN_ESC) {
break;
}
}
} else {}*
* }*
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