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Fixed broken MIDI host driver MIDI_Host_ReceiveEventPacket() function due to not unfreezing the MIDI data IN pipe before use (thanks to Michael Brown).

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This commit is contained in:
Dean Camera 2012-05-06 11:11:33 +00:00
parent 590d9b5ff8
commit 1007317c5f
2 changed files with 18 additions and 8 deletions
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25
LUFA/Drivers/USB/Class/Host/MIDIClassHost.c
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@ -192,18 +192,27 @@ bool MIDI_Host_ReceiveEventPacket(USB_ClassInfo_MIDI_Host_t* const MIDIInterface
{
if ((USB_HostState != HOST_STATE_Configured) || !(MIDIInterfaceInfo->State.IsActive))
return HOST_SENDCONTROL_DeviceDisconnected;
bool DataReady = false;
Pipe_SelectPipe(MIDIInterfaceInfo->Config.DataINPipe.Address);
Pipe_Unfreeze();
if (!(Pipe_IsReadWriteAllowed()))
return false;
if (Pipe_IsINReceived())
{
if (Pipe_BytesInPipe())
{
Pipe_Read_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NULL);
DataReady = true;
}
Pipe_Read_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NULL);
if (!(Pipe_IsReadWriteAllowed()))
Pipe_ClearIN();
return true;
if (!(Pipe_BytesInPipe()))
Pipe_ClearIN();
}
Pipe_Freeze();
return DataReady;
}
#endif