X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/5f709e281eec223c5de9766a99bdd54339e149cb..5cae54154506176d64a581c5b3d9550c901b570c:/Projects/SerialToLCD/Descriptors.c

diff --git a/Projects/SerialToLCD/Descriptors.c b/Projects/SerialToLCD/Descriptors.c
index f9a1c7a06..a2f11ab5a 100644
--- a/Projects/SerialToLCD/Descriptors.c
+++ b/Projects/SerialToLCD/Descriptors.c
@@ -1,13 +1,13 @@
 /*
              LUFA Library
-     Copyright (C) Dean Camera, 2012.
+     Copyright (C) Dean Camera, 2013.
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
-  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2013  Dean Camera (dean [at] fourwalledcubicle [dot] com)
   Copyright 2012  Simon Foster (simon.foster [at] inbox [dot] com)
 
   Permission to use, copy, modify, distribute, and sell this
@@ -19,7 +19,7 @@
   advertising or publicity pertaining to distribution of the
   software without specific, written prior permission.
 
-  The author disclaim all warranties with regard to this
+  The author disclaims all warranties with regard to this
   software, including all implied warranties of merchantability
   and fitness.  In no event shall the author be liable for any
   special, indirect or consequential damages or any damages
@@ -38,6 +38,17 @@
 
 #include "Descriptors.h"
 
+/* On some devices, there is a factory set internal serial number which can be automatically sent to the host as
+ * the device's serial number when the Device Descriptor's .SerialNumStrIndex entry is set to USE_INTERNAL_SERIAL.
+ * This allows the host to track a device across insertions on different ports, allowing them to retain allocated
+ * resources like COM port numbers and drivers. On demos using this feature, give a warning on unsupported devices
+ * so that the user can supply their own serial number descriptor instead or remove the USE_INTERNAL_SERIAL value
+ * from the Device Descriptor (forcing the host to generate a serial number for each device from the VID, PID and
+ * port location).
+ */
+#if (USE_INTERNAL_SERIAL == NO_DESCRIPTOR)
+	#warning USE_INTERNAL_SERIAL is not available on this AVR - please manually construct a device serial descriptor.
+#endif
 
 /** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
  *  device characteristics, including the supported USB version, control endpoint size and the
@@ -59,8 +70,8 @@ const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
 	.ProductID              = 0x204B,
 	.ReleaseNumber          = VERSION_BCD(00.01),
 
-	.ManufacturerStrIndex   = 0x01,
-	.ProductStrIndex        = 0x02,
+	.ManufacturerStrIndex   = STRING_ID_Manufacturer,
+	.ProductStrIndex        = STRING_ID_Product,
 	.SerialNumStrIndex      = USE_INTERNAL_SERIAL,
 
 	.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
@@ -92,7 +103,7 @@ const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		{
 			.Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
 
-			.InterfaceNumber        = 0,
+			.InterfaceNumber        = INTERFACE_ID_CDC_CCI,
 			.AlternateSetting       = 0,
 
 			.TotalEndpoints         = 1,
@@ -125,8 +136,8 @@ const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 			.Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t), .Type = DTYPE_CSInterface},
 			.Subtype                = CDC_DSUBTYPE_CSInterface_Union,
 
-			.MasterInterfaceNumber  = 0,
-			.SlaveInterfaceNumber   = 1,
+			.MasterInterfaceNumber  = INTERFACE_ID_CDC_CCI,
+			.SlaveInterfaceNumber   = INTERFACE_ID_CDC_DCI,
 		},
 
 	.CDC_NotificationEndpoint =
@@ -143,7 +154,7 @@ const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 		{
 			.Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
 
-			.InterfaceNumber        = 1,
+			.InterfaceNumber        = INTERFACE_ID_CDC_DCI,
 			.AlternateSetting       = 0,
 
 			.TotalEndpoints         = 2,
@@ -238,15 +249,15 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 		case DTYPE_String:
 			switch (DescriptorNumber)
 			{
-				case 0x00:
+				case STRING_ID_Language:
 					Address = &LanguageString;
 					Size    = pgm_read_byte(&LanguageString.Header.Size);
 					break;
-				case 0x01:
+				case STRING_ID_Manufacturer:
 					Address = &ManufacturerString;
 					Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 					break;
-				case 0x02:
+				case STRING_ID_Product:
 					Address = &ProductString;
 					Size    = pgm_read_byte(&ProductString.Header.Size);
 					break;