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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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1
LUFA/DoxygenPages/ChangeLog.txt
View File

@ -56,6 +56,7 @@
* - Fixed inverted LED logic in the USB2AX board LED driver
* - Fixed possible deadlock in the CDC device driver if the USB connection is dropped while the CDC_REQ_SetLineEncoding control request is being processed by
* the stack (thanks to Jonathan Hudgins)
* - Fixed broken MIDI host driver MIDI_Host_ReceiveEventPacket() function due to not unfreezing the MIDI data IN pipe before use (thanks to Michael Brown)
* - Library Applications:
* - Fixed error in the AVRISP-MKII programmer when ISP mode is used at 64KHz (thanks to Ben R. Porter)
* - Fixed AVRISP-MKII programmer project failing to compile for the U4 chips when VTARGET_ADC_CHANNEL is defined to an invalid channel and NO_VTARGET_DETECT is

19
LUFA/Drivers/USB/Class/Host/MIDIClassHost.c
View File

@ -193,17 +193,26 @@ 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;
}
if (!(Pipe_IsReadWriteAllowed()))
if (!(Pipe_BytesInPipe()))
Pipe_ClearIN();
}
return true;
Pipe_Freeze();
return DataReady;
}
#endif