Fix low level host mode demos not correctly fetching the next endpoint when an invali...

[pub/USBasp.git] / LUFA / Drivers / USB / Class / Host / MIDI.c

diff --git a/LUFA/Drivers/USB/Class/Host/MIDI.c b/LUFA/Drivers/USB/Class/Host/MIDI.c
index fd7f13c..6f34933 100644 (file)
--- a/LUFA/Drivers/USB/Class/Host/MIDI.c
+++ b/LUFA/Drivers/USB/Class/Host/MIDI.c
@@ -40,50 +40,72 @@ uint8_t MIDI_Host_ConfigurePipes(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceI
                                  uint16_t ConfigDescriptorSize,
                                  void* ConfigDescriptorData)
 {
-       uint8_t FoundEndpoints = 0;
+       USB_Descriptor_Endpoint_t* DataINEndpoint  = NULL;
+       USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
 
        memset(&MIDIInterfaceInfo->State, 0x00, sizeof(MIDIInterfaceInfo->State));
 
        if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
          return MIDI_ENUMERROR_InvalidConfigDescriptor;
-       
+
        if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
                                      DCOMP_MIDI_Host_NextMIDIStreamingInterface) != DESCRIPTOR_SEARCH_COMP_Found)
        {
-               return MIDI_ENUMERROR_NoStreamingInterfaceFound;
+               return MIDI_ENUMERROR_NoCompatibleInterfaceFound;
        }
        
-       while (FoundEndpoints != (MIDI_FOUND_DATAPIPE_IN | MIDI_FOUND_DATAPIPE_OUT))
+       MIDIInterfaceInfo->State.InterfaceNumber = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t)->InterfaceNumber;
+
+       while (!(DataINEndpoint) || !(DataOUTEndpoint))
        {
                if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
                                              DCOMP_MIDI_Host_NextMIDIStreamingDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
                {
-                       return MIDI_ENUMERROR_EndpointsNotFound;
+                       DataINEndpoint  = NULL;
+                       DataOUTEndpoint = NULL;
+
+                       if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+                                                                                 DCOMP_MIDI_Host_NextMIDIStreamingInterface) != DESCRIPTOR_SEARCH_COMP_Found)
+                       {
+                               return MIDI_ENUMERROR_NoCompatibleInterfaceFound;
+                       }
+
+                       MIDIInterfaceInfo->State.InterfaceNumber = DESCRIPTOR_PCAST(ConfigDescriptorData,
+                                                                                   USB_Descriptor_Interface_t)->InterfaceNumber;
+
+                       continue;
                }
                
                USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
 
                if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
+                 DataINEndpoint = EndpointData;
+               else
+                 DataOUTEndpoint = EndpointData;
+       }
+       
+       for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
+       {
+               if (PipeNum == MIDIInterfaceInfo->Config.DataINPipeNumber)
                {
-                       Pipe_ConfigurePipe(MIDIInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
-                                                          EndpointData->EndpointAddress, EndpointData->EndpointSize,
+                       Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_IN,
+                                                          DataINEndpoint->EndpointAddress, DataINEndpoint->EndpointSize,
                                                           MIDIInterfaceInfo->Config.DataINPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
-                       MIDIInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;
                        
-                       FoundEndpoints |= MIDI_FOUND_DATAPIPE_IN;
+                       MIDIInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;                 
                }
-               else
+               else if (PipeNum == MIDIInterfaceInfo->Config.DataOUTPipeNumber)
                {
-                       Pipe_ConfigurePipe(MIDIInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
-                                                          EndpointData->EndpointAddress, EndpointData->EndpointSize,
+                       Pipe_ConfigurePipe(PipeNum, EP_TYPE_BULK, PIPE_TOKEN_OUT,
+                                                          DataOUTEndpoint->EndpointAddress, DataOUTEndpoint->EndpointSize,
                                                           MIDIInterfaceInfo->Config.DataOUTPipeDoubleBank ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE);
-                       MIDIInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;
-
-                       FoundEndpoints |= MIDI_FOUND_DATAPIPE_OUT;
+                       
+                       MIDIInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;                       
                }
        }
-       
+
        MIDIInterfaceInfo->State.IsActive = true;
+
        return MIDI_ENUMERROR_NoError;
 }