Add experimental support for the AVR32 UC3A4 microcontrollers.

[pub/USBasp.git] / LUFA / Drivers / USB / Core / UC3 / Device_UC3.h

diff --git a/LUFA/Drivers/USB/Core/UC3/Device_UC3.h b/LUFA/Drivers/USB/Core/UC3/Device_UC3.h
index 653044f..59897a7 100644 (file)
--- a/LUFA/Drivers/USB/Core/UC3/Device_UC3.h
+++ b/LUFA/Drivers/USB/Core/UC3/Device_UC3.h
@@ -77,16 +77,22 @@
                        #define USB_DEVICE_OPT_FULLSPEED               (0 << 0)\r
                        //@}\r
                        \r
-                       /** String descriptor index for the device's unique serial number string descriptor within the device.\r
-                        *  This unique serial number is used by the host to associate resources to the device (such as drivers or COM port\r
-                        *  number allocations) to a device regardless of the port it is plugged in to on the host. Some microcontrollers contain\r
-                        *  a unique serial number internally, and setting the device descriptors serial number string index to this value\r
-                        *  will cause it to use the internal serial number.\r
-                        *\r
-                        *  On unsupported devices, this will evaluate to \ref NO_DESCRIPTOR and so will force the host to create a pseudo-serial\r
-                        *  number for the device.\r
-                        */\r
-                       #define USE_INTERNAL_SERIAL                    NO_DESCRIPTOR\r
+                       #if (!defined(NO_INTERNAL_SERIAL) && \\r
+                            (defined(USB_SERIES_UC3A3_AVR) || defined(USB_SERIES_UC3A4_AVR) || \\r
+                                 defined(__DOXYGEN__)))\r
+                               /** String descriptor index for the device's unique serial number string descriptor within the device.\r
+                                *  This unique serial number is used by the host to associate resources to the device (such as drivers or COM port\r
+                                *  number allocations) to a device regardless of the port it is plugged in to on the host. Some microcontrollers contain\r
+                                *  a unique serial number internally, and setting the device descriptors serial number string index to this value\r
+                                *  will cause it to use the internal serial number.\r
+                                *\r
+                                *  On unsupported devices, this will evaluate to \ref NO_DESCRIPTOR and so will force the host to create a pseudo-serial\r
+                                *  number for the device.\r
+                                */\r
+                               #define USE_INTERNAL_SERIAL           0xDC\r
+                       #else\r
+                               #define USE_INTERNAL_SERIAL           NO_DESCRIPTOR\r
+                       #endif  \r
                        \r
                /* Function Prototypes: */\r
                        /** Sends a Remote Wakeup request to the host. This signals to the host that the device should\r
@@ -171,6 +177,37 @@
                        {\r
                                return AVR32_USBB.UDCON.adden;\r
                        }\r
+\r
+                       static inline uint8_t USB_Device_GetSerialString(uint16_t* UnicodeString, const uint8_t MaxLen)\r
+                       {\r
+                               uint8_t SerialCharNum = 0;\r
+\r
+                               ATOMIC_BLOCK(ATOMIC_RESTORESTATE)\r
+                               {\r
+                                       uint32_t* SigReadAddress = 0x80800204;\r
+\r
+                                       for (SerialCharNum = 0; SerialCharNum < MIN(MaxLen, 30); SerialCharNum++)\r
+                                       {\r
+                                               if (SerialCharNum == MaxLen)\r
+                                                 break;\r
+\r
+                                               uint8_t SerialByte = *SigReadAddress;\r
+\r
+                                               if (SerialCharNum & 0x01)\r
+                                               {\r
+                                                       SerialByte >>= 4;\r
+                                                       SigReadAddress++;\r
+                                               }\r
+\r
+                                               SerialByte &= 0x0F;\r
+\r
+                                               UnicodeString[SerialCharNum] = cpu_to_le16((SerialByte >= 10) ?\r
+                                                                                          (('A' - 10) + SerialByte) : ('0' + SerialByte));\r
+                                       }\r
+                               }\r
+                               \r
+                               return SerialCharNum;\r
+                       }\r
        #endif\r
 \r
 #endif\r