The Audio_Device_IsSampleReceived() and Audio_Device_IsReadyForNextSample() functions...

[pub/USBasp.git] / Demos / Host / LowLevel / MassStorageHost / ConfigDescriptor.c

diff --git a/Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.c b/Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.c
index 9f80b42..d402d36 100644 (file)
--- a/Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.c
+++ b/Demos/Host/LowLevel/MassStorageHost/ConfigDescriptor.c
@@ -1,21 +1,21 @@
 /*\r
              LUFA Library\r
-     Copyright (C) Dean Camera, 2009.\r
+     Copyright (C) Dean Camera, 2010.\r
               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r
-  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
 \r
-  Permission to use, copy, modify, and distribute this software\r
-  and its documentation for any purpose and without fee is hereby\r
-  granted, provided that the above copyright notice appear in all\r
-  copies and that both that the copyright notice and this\r
-  permission notice and warranty disclaimer appear in supporting\r
-  documentation, and that the name of the author not be used in\r
-  advertising or publicity pertaining to distribution of the\r
+  Permission to use, copy, modify, distribute, and sell this \r
+  software and its documentation for any purpose is hereby granted\r
+  without fee, provided that the above copyright notice appear in \r
+  all copies and that both that the copyright notice and this\r
+  permission notice and warranty disclaimer appear in supporting \r
+  documentation, and that the name of the author not be used in \r
+  advertising or publicity pertaining to distribution of the \r
   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r
@@ -43,35 +43,31 @@
  *\r
  *  This routine searches for a MSD interface descriptor containing bulk IN and OUT data endpoints.\r
  *\r
- *  \return An error code from the MassStorageHost_GetConfigDescriptorDataCodes_t enum.\r
+ *  \return An error code from the \ref MassStorageHost_GetConfigDescriptorDataCodes_t enum.\r
  */\r
 uint8_t ProcessConfigurationDescriptor(void)\r
 {\r
-       uint8_t* ConfigDescriptorData;\r
-       uint16_t ConfigDescriptorSize;\r
-       uint8_t  FoundEndpoints = 0;\r
-       \r
-       /* Get Configuration Descriptor size from the device */\r
-       if (USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful)\r
-         return ControlError;\r
-       \r
-       /* Ensure that the Configuration Descriptor isn't too large */\r
-       if (ConfigDescriptorSize > MAX_CONFIG_DESCRIPTOR_SIZE)\r
-         return DescriptorTooLarge;\r
-         \r
-       /* Allocate enough memory for the entire config descriptor */\r
-       ConfigDescriptorData = alloca(ConfigDescriptorSize);\r
+       uint8_t  ConfigDescriptorData[512];\r
+       void*    CurrConfigLocation = ConfigDescriptorData;\r
+       uint16_t CurrConfigBytesRem;\r
+       uint8_t  FoundEndpoints     = 0;\r
 \r
        /* Retrieve the entire configuration descriptor into the allocated buffer */\r
-       USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData);\r
-       \r
-       /* Validate returned data - ensure first entry is a configuration header descriptor */\r
-       if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)\r
-         return InvalidConfigDataReturned;\r
+       switch (USB_Host_GetDeviceConfigDescriptor(1, &CurrConfigBytesRem, ConfigDescriptorData, sizeof(ConfigDescriptorData)))\r
+       {\r
+               case HOST_GETCONFIG_Successful:\r
+                       break;\r
+               case HOST_GETCONFIG_InvalidData:\r
+                       return InvalidConfigDataReturned;\r
+               case HOST_GETCONFIG_BuffOverflow:\r
+                       return DescriptorTooLarge;\r
+               default:\r
+                       return ControlError;\r
+       }\r
        \r
        /* Get the mass storage interface from the configuration descriptor */\r
-       if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,\r
-                                     DComp_NextMassStorageInterface) != DESCRIPTOR_SEARCH_COMP_Found)\r
+       if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,\r
+                                     DComp_NextMSInterface) != DESCRIPTOR_SEARCH_COMP_Found)\r
        {\r
                /* Descriptor not found, error out */\r
                return NoInterfaceFound;\r
@@ -81,14 +77,14 @@ uint8_t ProcessConfigurationDescriptor(void)
        while (FoundEndpoints != ((1 << MASS_STORE_DATA_IN_PIPE) | (1 << MASS_STORE_DATA_OUT_PIPE)))\r
        {\r
                /* Fetch the next bulk endpoint from the current mass storage interface */\r
-               if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,\r
-                                             DComp_NextInterfaceBulkDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)\r
+               if (USB_GetNextDescriptorComp(&CurrConfigBytesRem, &CurrConfigLocation,\r
+                                             DComp_NextMSInterfaceBulkDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)\r
                {\r
                        /* Descriptor not found, error out */\r
                        return NoEndpointFound;\r
                }\r
                \r
-               USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);\r
+               USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(CurrConfigLocation, USB_Descriptor_Endpoint_t);\r
 \r
                /* Check if the endpoint is a bulk IN or bulk OUT endpoint, set appropriate globals */\r
                if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)\r
@@ -125,7 +121,7 @@ uint8_t ProcessConfigurationDescriptor(void)
  *\r
  *  \return A value from the DSEARCH_Return_ErrorCodes_t enum\r
  */\r
-uint8_t DComp_NextMassStorageInterface(void* CurrentDescriptor)\r
+uint8_t DComp_NextMSInterface(void* CurrentDescriptor)\r
 {\r
        if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)\r
        {\r
@@ -150,7 +146,7 @@ uint8_t DComp_NextMassStorageInterface(void* CurrentDescriptor)
  *\r
  *  \return A value from the DSEARCH_Return_ErrorCodes_t enum\r
  */\r
-uint8_t DComp_NextInterfaceBulkDataEndpoint(void* CurrentDescriptor)\r
+uint8_t DComp_NextMSInterfaceBulkDataEndpoint(void* CurrentDescriptor)\r
 {\r
        if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)\r
        {\r