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-rw-r--r--tmk_core/protocol/lufa/descriptor.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/tmk_core/protocol/lufa/descriptor.c b/tmk_core/protocol/lufa/descriptor.c
index 357954368b..e9f7f87308 100644
--- a/tmk_core/protocol/lufa/descriptor.c
+++ b/tmk_core/protocol/lufa/descriptor.c
@@ -275,7 +275,7 @@ const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
.ManufacturerStrIndex = 0x01,
.ProductStrIndex = 0x02,
- .SerialNumStrIndex = NO_DESCRIPTOR,
+ .SerialNumStrIndex = 0x03,
.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
};
@@ -860,6 +860,18 @@ const USB_Descriptor_String_t PROGMEM ProductString =
.UnicodeString = LSTR(PRODUCT)
};
+#ifndef SERIAL_NUMBER
+ #define SERIAL_NUMBER 0
+#endif
+
+const USB_Descriptor_String_t PROGMEM SerialNumberString =
+{
+ /* subtract 1 for null terminator */
+ .Header = {.Size = USB_STRING_LEN(sizeof(STR(SERIAL_NUMBER))-1), .Type = DTYPE_String},
+
+ .UnicodeString = LSTR(SERIAL_NUMBER)
+};
+
/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
* documentation) by the application code so that the address and size of a requested descriptor can be given
@@ -902,6 +914,10 @@ uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
Address = &ProductString;
Size = pgm_read_byte(&ProductString.Header.Size);
break;
+ case 0x03:
+ Address = &SerialNumberString;
+ Size = pgm_read_byte(&SerialNumberString.Header.Size);
+ break;
}
break;
case HID_DTYPE_HID: