Massdrop keyboard support (#3780)

* Massdrop SAMD51

Massdrop SAMD51 keyboards initial project upload

* Removing relocated files

Removing files that were relocated and not deleted from previous location

* LED queue fix and cleaning

Cleaned some white space or comments.
Fix for LED I2C command queue.
Cleaned up interrupts.
Added debug function for printing numbers to scope through m15 line.

* Factory programmed serial usage

Ability to use factory programmed serial in hub and keyboard usb descriptors

* USB serial number and bugfix

Added support for factory programmed serial and usage.
Incorporated bootloader's conditional compiling to align project closer.
Fixed issue when USB device attempted to send before enabled.
General white space and comment cleanup.

* Project cleanup

Cleaned up project in terms of white space, commented code, and unecessary files.
NKRO keyboard is now using correct setreport although KBD was fine to use.
Fixed broken linkage to __xprintf for serial debug statements.

* Fix for extra keys

Fixed possible USB hang on extra keys report set missing

* I2C cleanup

I2C cleanup and file renames necessary for master branch merge

* Boot tracing and clocks cleanup

Added optional boot debug trace mode through debug LED codes.
General clock code cleanup.

* Relocate ARM/Atmel headers

Moved ARM/Atmel header folder from drivers to lib and made necessary makefile changes.

* Pull request changes

Pull request changes

* Keymap and compile flag fix

Keymap fix for momentary layer.
Potential compile flag fix for Travis CI failure.

* va_list include fix

Fix for va_list compile failure

* Include file case fixes

Fixes for include files with incorrect case

* ctrl and alt67 keyboard readme

Added ctrl and alt67 keyboard readme files

1 files changed, 300 insertions, 0 deletions

diff --git a/lib/arm_atsam/packs/atmel/SAMD51_DFP/1.0.70/include/component/wdt.h b/lib/arm_atsam/packs/atmel/SAMD51_DFP/1.0.70/include/component/wdt.h
new file mode 100644
index 000000000..ce1947dcc
--- /dev/null
+++ b/lib/arm_atsam/packs/atmel/SAMD51_DFP/1.0.70/include/component/wdt.h
@@ -0,0 +1,300 @@
+/**
+ * \file
+ *
+ * \brief Component description for WDT
+ *
+ * Copyright (c) 2017 Microchip Technology Inc.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the Licence at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * \asf_license_stop
+ *
+ */
+
+#ifndef _SAMD51_WDT_COMPONENT_
+#define _SAMD51_WDT_COMPONENT_
+
+/* ========================================================================== */
+/**  SOFTWARE API DEFINITION FOR WDT */
+/* ========================================================================== */
+/** \addtogroup SAMD51_WDT Watchdog Timer */
+/*@{*/
+
+#define WDT_U2251
+#define REV_WDT                     0x110
+
+/* -------- WDT_CTRLA : (WDT Offset: 0x0) (R/W  8) Control -------- */
+#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+typedef union {
+  struct {
+    uint8_t  :1;               /*!< bit:      0  Reserved                           */
+    uint8_t  ENABLE:1;         /*!< bit:      1  Enable                             */
+    uint8_t  WEN:1;            /*!< bit:      2  Watchdog Timer Window Mode Enable  */
+    uint8_t  :4;               /*!< bit:  3.. 6  Reserved                           */
+    uint8_t  ALWAYSON:1;       /*!< bit:      7  Always-On                          */
+  } bit;                       /*!< Structure used for bit  access                  */
+  uint8_t reg;                 /*!< Type      used for register access              */
+} WDT_CTRLA_Type;
+#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+#define WDT_CTRLA_OFFSET            0x0          /**< \brief (WDT_CTRLA offset) Control */
+#define WDT_CTRLA_RESETVALUE        _U_(0x00)    /**< \brief (WDT_CTRLA reset_value) Control */
+
+#define WDT_CTRLA_ENABLE_Pos        1            /**< \brief (WDT_CTRLA) Enable */
+#define WDT_CTRLA_ENABLE            (_U_(0x1) << WDT_CTRLA_ENABLE_Pos)
+#define WDT_CTRLA_WEN_Pos           2            /**< \brief (WDT_CTRLA) Watchdog Timer Window Mode Enable */
+#define WDT_CTRLA_WEN               (_U_(0x1) << WDT_CTRLA_WEN_Pos)
+#define WDT_CTRLA_ALWAYSON_Pos      7            /**< \brief (WDT_CTRLA) Always-On */
+#define WDT_CTRLA_ALWAYSON          (_U_(0x1) << WDT_CTRLA_ALWAYSON_Pos)
+#define WDT_CTRLA_MASK              _U_(0x86)    /**< \brief (WDT_CTRLA) MASK Register */
+
+/* -------- WDT_CONFIG : (WDT Offset: 0x1) (R/W  8) Configuration -------- */
+#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+typedef union {
+  struct {
+    uint8_t  PER:4;            /*!< bit:  0.. 3  Time-Out Period                    */
+    uint8_t  WINDOW:4;         /*!< bit:  4.. 7  Window Mode Time-Out Period        */
+  } bit;                       /*!< Structure used for bit  access                  */
+  uint8_t reg;                 /*!< Type      used for register access              */
+} WDT_CONFIG_Type;
+#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+#define WDT_CONFIG_OFFSET           0x1          /**< \brief (WDT_CONFIG offset) Configuration */
+#define WDT_CONFIG_RESETVALUE       _U_(0xBB)    /**< \brief (WDT_CONFIG reset_value) Configuration */
+
+#define WDT_CONFIG_PER_Pos          0            /**< \brief (WDT_CONFIG) Time-Out Period */
+#define WDT_CONFIG_PER_Msk          (_U_(0xF) << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER(value)       (WDT_CONFIG_PER_Msk & ((value) << WDT_CONFIG_PER_Pos))
+#define   WDT_CONFIG_PER_CYC8_Val         _U_(0x0)   /**< \brief (WDT_CONFIG) 8 clock cycles */
+#define   WDT_CONFIG_PER_CYC16_Val        _U_(0x1)   /**< \brief (WDT_CONFIG) 16 clock cycles */
+#define   WDT_CONFIG_PER_CYC32_Val        _U_(0x2)   /**< \brief (WDT_CONFIG) 32 clock cycles */
+#define   WDT_CONFIG_PER_CYC64_Val        _U_(0x3)   /**< \brief (WDT_CONFIG) 64 clock cycles */
+#define   WDT_CONFIG_PER_CYC128_Val       _U_(0x4)   /**< \brief (WDT_CONFIG) 128 clock cycles */
+#define   WDT_CONFIG_PER_CYC256_Val       _U_(0x5)   /**< \brief (WDT_CONFIG) 256 clock cycles */
+#define   WDT_CONFIG_PER_CYC512_Val       _U_(0x6)   /**< \brief (WDT_CONFIG) 512 clock cycles */
+#define   WDT_CONFIG_PER_CYC1024_Val      _U_(0x7)   /**< \brief (WDT_CONFIG) 1024 clock cycles */
+#define   WDT_CONFIG_PER_CYC2048_Val      _U_(0x8)   /**< \brief (WDT_CONFIG) 2048 clock cycles */
+#define   WDT_CONFIG_PER_CYC4096_Val      _U_(0x9)   /**< \brief (WDT_CONFIG) 4096 clock cycles */
+#define   WDT_CONFIG_PER_CYC8192_Val      _U_(0xA)   /**< \brief (WDT_CONFIG) 8192 clock cycles */
+#define   WDT_CONFIG_PER_CYC16384_Val     _U_(0xB)   /**< \brief (WDT_CONFIG) 16384 clock cycles */
+#define WDT_CONFIG_PER_CYC8         (WDT_CONFIG_PER_CYC8_Val       << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC16        (WDT_CONFIG_PER_CYC16_Val      << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC32        (WDT_CONFIG_PER_CYC32_Val      << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC64        (WDT_CONFIG_PER_CYC64_Val      << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC128       (WDT_CONFIG_PER_CYC128_Val     << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC256       (WDT_CONFIG_PER_CYC256_Val     << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC512       (WDT_CONFIG_PER_CYC512_Val     << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC1024      (WDT_CONFIG_PER_CYC1024_Val    << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC2048      (WDT_CONFIG_PER_CYC2048_Val    << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC4096      (WDT_CONFIG_PER_CYC4096_Val    << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC8192      (WDT_CONFIG_PER_CYC8192_Val    << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_PER_CYC16384     (WDT_CONFIG_PER_CYC16384_Val   << WDT_CONFIG_PER_Pos)
+#define WDT_CONFIG_WINDOW_Pos       4            /**< \brief (WDT_CONFIG) Window Mode Time-Out Period */
+#define WDT_CONFIG_WINDOW_Msk       (_U_(0xF) << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW(value)    (WDT_CONFIG_WINDOW_Msk & ((value) << WDT_CONFIG_WINDOW_Pos))
+#define   WDT_CONFIG_WINDOW_CYC8_Val      _U_(0x0)   /**< \brief (WDT_CONFIG) 8 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC16_Val     _U_(0x1)   /**< \brief (WDT_CONFIG) 16 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC32_Val     _U_(0x2)   /**< \brief (WDT_CONFIG) 32 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC64_Val     _U_(0x3)   /**< \brief (WDT_CONFIG) 64 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC128_Val    _U_(0x4)   /**< \brief (WDT_CONFIG) 128 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC256_Val    _U_(0x5)   /**< \brief (WDT_CONFIG) 256 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC512_Val    _U_(0x6)   /**< \brief (WDT_CONFIG) 512 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC1024_Val   _U_(0x7)   /**< \brief (WDT_CONFIG) 1024 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC2048_Val   _U_(0x8)   /**< \brief (WDT_CONFIG) 2048 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC4096_Val   _U_(0x9)   /**< \brief (WDT_CONFIG) 4096 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC8192_Val   _U_(0xA)   /**< \brief (WDT_CONFIG) 8192 clock cycles */
+#define   WDT_CONFIG_WINDOW_CYC16384_Val  _U_(0xB)   /**< \brief (WDT_CONFIG) 16384 clock cycles */
+#define WDT_CONFIG_WINDOW_CYC8      (WDT_CONFIG_WINDOW_CYC8_Val    << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC16     (WDT_CONFIG_WINDOW_CYC16_Val   << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC32     (WDT_CONFIG_WINDOW_CYC32_Val   << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC64     (WDT_CONFIG_WINDOW_CYC64_Val   << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC128    (WDT_CONFIG_WINDOW_CYC128_Val  << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC256    (WDT_CONFIG_WINDOW_CYC256_Val  << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC512    (WDT_CONFIG_WINDOW_CYC512_Val  << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC1024   (WDT_CONFIG_WINDOW_CYC1024_Val << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC2048   (WDT_CONFIG_WINDOW_CYC2048_Val << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC4096   (WDT_CONFIG_WINDOW_CYC4096_Val << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC8192   (WDT_CONFIG_WINDOW_CYC8192_Val << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_WINDOW_CYC16384  (WDT_CONFIG_WINDOW_CYC16384_Val << WDT_CONFIG_WINDOW_Pos)
+#define WDT_CONFIG_MASK             _U_(0xFF)    /**< \brief (WDT_CONFIG) MASK Register */
+
+/* -------- WDT_EWCTRL : (WDT Offset: 0x2) (R/W  8) Early Warning Interrupt Control -------- */
+#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+typedef union {
+  struct {
+    uint8_t  EWOFFSET:4;       /*!< bit:  0.. 3  Early Warning Interrupt Time Offset */
+    uint8_t  :4;               /*!< bit:  4.. 7  Reserved                           */
+  } bit;                       /*!< Structure used for bit  access                  */
+  uint8_t reg;                 /*!< Type      used for register access              */
+} WDT_EWCTRL_Type;
+#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+#define WDT_EWCTRL_OFFSET           0x2          /**< \brief (WDT_EWCTRL offset) Early Warning Interrupt Control */
+#define WDT_EWCTRL_RESETVALUE       _U_(0x0B)    /**< \brief (WDT_EWCTRL reset_value) Early Warning Interrupt Control */
+
+#define WDT_EWCTRL_EWOFFSET_Pos     0            /**< \brief (WDT_EWCTRL) Early Warning Interrupt Time Offset */
+#define WDT_EWCTRL_EWOFFSET_Msk     (_U_(0xF) << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET(value)  (WDT_EWCTRL_EWOFFSET_Msk & ((value) << WDT_EWCTRL_EWOFFSET_Pos))
+#define   WDT_EWCTRL_EWOFFSET_CYC8_Val    _U_(0x0)   /**< \brief (WDT_EWCTRL) 8 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC16_Val   _U_(0x1)   /**< \brief (WDT_EWCTRL) 16 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC32_Val   _U_(0x2)   /**< \brief (WDT_EWCTRL) 32 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC64_Val   _U_(0x3)   /**< \brief (WDT_EWCTRL) 64 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC128_Val  _U_(0x4)   /**< \brief (WDT_EWCTRL) 128 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC256_Val  _U_(0x5)   /**< \brief (WDT_EWCTRL) 256 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC512_Val  _U_(0x6)   /**< \brief (WDT_EWCTRL) 512 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC1024_Val _U_(0x7)   /**< \brief (WDT_EWCTRL) 1024 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC2048_Val _U_(0x8)   /**< \brief (WDT_EWCTRL) 2048 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC4096_Val _U_(0x9)   /**< \brief (WDT_EWCTRL) 4096 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC8192_Val _U_(0xA)   /**< \brief (WDT_EWCTRL) 8192 clock cycles */
+#define   WDT_EWCTRL_EWOFFSET_CYC16384_Val _U_(0xB)   /**< \brief (WDT_EWCTRL) 16384 clock cycles */
+#define WDT_EWCTRL_EWOFFSET_CYC8    (WDT_EWCTRL_EWOFFSET_CYC8_Val  << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC16   (WDT_EWCTRL_EWOFFSET_CYC16_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC32   (WDT_EWCTRL_EWOFFSET_CYC32_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC64   (WDT_EWCTRL_EWOFFSET_CYC64_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC128  (WDT_EWCTRL_EWOFFSET_CYC128_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC256  (WDT_EWCTRL_EWOFFSET_CYC256_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC512  (WDT_EWCTRL_EWOFFSET_CYC512_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC1024 (WDT_EWCTRL_EWOFFSET_CYC1024_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC2048 (WDT_EWCTRL_EWOFFSET_CYC2048_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC4096 (WDT_EWCTRL_EWOFFSET_CYC4096_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC8192 (WDT_EWCTRL_EWOFFSET_CYC8192_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_EWOFFSET_CYC16384 (WDT_EWCTRL_EWOFFSET_CYC16384_Val << WDT_EWCTRL_EWOFFSET_Pos)
+#define WDT_EWCTRL_MASK             _U_(0x0F)    /**< \brief (WDT_EWCTRL) MASK Register */
+
+/* -------- WDT_INTENCLR : (WDT Offset: 0x4) (R/W  8) Interrupt Enable Clear -------- */
+#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+typedef union {
+  struct {
+    uint8_t  EW:1;             /*!< bit:      0  Early Warning Interrupt Enable     */
+    uint8_t  :7;               /*!< bit:  1.. 7  Reserved                           */
+  } bit;                       /*!< Structure used for bit  access                  */
+  uint8_t reg;                 /*!< Type      used for register access              */
+} WDT_INTENCLR_Type;
+#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+#define WDT_INTENCLR_OFFSET         0x4          /**< \brief (WDT_INTENCLR offset) Interrupt Enable Clear */
+#define WDT_INTENCLR_RESETVALUE     _U_(0x00)    /**< \brief (WDT_INTENCLR reset_value) Interrupt Enable Clear */
+
+#define WDT_INTENCLR_EW_Pos         0            /**< \brief (WDT_INTENCLR) Early Warning Interrupt Enable */
+#define WDT_INTENCLR_EW             (_U_(0x1) << WDT_INTENCLR_EW_Pos)
+#define WDT_INTENCLR_MASK           _U_(0x01)    /**< \brief (WDT_INTENCLR) MASK Register */
+
+/* -------- WDT_INTENSET : (WDT Offset: 0x5) (R/W  8) Interrupt Enable Set -------- */
+#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+typedef union {
+  struct {
+    uint8_t  EW:1;             /*!< bit:      0  Early Warning Interrupt Enable     */
+    uint8_t  :7;               /*!< bit:  1.. 7  Reserved                           */
+  } bit;                       /*!< Structure used for bit  access                  */
+  uint8_t reg;                 /*!< Type      used for register access              */
+} WDT_INTENSET_Type;
+#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+#define WDT_INTENSET_OFFSET         0x5          /**< \brief (WDT_INTENSET offset) Interrupt Enable Set */
+#define WDT_INTENSET_RESETVALUE     _U_(0x00)    /**< \brief (WDT_INTENSET reset_value) Interrupt Enable Set */
+
+#define WDT_INTENSET_EW_Pos         0            /**< \brief (WDT_INTENSET) Early Warning Interrupt Enable */
+#define WDT_INTENSET_EW             (_U_(0x1) << WDT_INTENSET_EW_Pos)
+#define WDT_INTENSET_MASK           _U_(0x01)    /**< \brief (WDT_INTENSET) MASK Register */
+
+/* -------- WDT_INTFLAG : (WDT Offset: 0x6) (R/W  8) Interrupt Flag Status and Clear -------- */
+#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+typedef union { // __I to avoid read-modify-write on write-to-clear register
+  struct {
+    __I uint8_t  EW:1;             /*!< bit:      0  Early Warning                      */
+    __I uint8_t  :7;               /*!< bit:  1.. 7  Reserved                           */
+  } bit;                       /*!< Structure used for bit  access                  */
+  uint8_t reg;                 /*!< Type      used for register access              */
+} WDT_INTFLAG_Type;
+#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+#define WDT_INTFLAG_OFFSET          0x6          /**< \brief (WDT_INTFLAG offset) Interrupt Flag Status and Clear */
+#define WDT_INTFLAG_RESETVALUE      _U_(0x00)    /**< \brief (WDT_INTFLAG reset_value) Interrupt Flag Status and Clear */
+
+#define WDT_INTFLAG_EW_Pos          0            /**< \brief (WDT_INTFLAG) Early Warning */
+#define WDT_INTFLAG_EW              (_U_(0x1) << WDT_INTFLAG_EW_Pos)
+#define WDT_INTFLAG_MASK            _U_(0x01)    /**< \brief (WDT_INTFLAG) MASK Register */
+
+/* -------- WDT_SYNCBUSY : (WDT Offset: 0x8) (R/  32) Synchronization Busy -------- */
+#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+typedef union {
+  struct {
+    uint32_t :1;               /*!< bit:      0  Reserved                           */
+    uint32_t ENABLE:1;         /*!< bit:      1  Enable Synchronization Busy        */
+    uint32_t WEN:1;            /*!< bit:      2  Window Enable Synchronization Busy */
+    uint32_t ALWAYSON:1;       /*!< bit:      3  Always-On Synchronization Busy     */
+    uint32_t CLEAR:1;          /*!< bit:      4  Clear Synchronization Busy         */
+    uint32_t :27;              /*!< bit:  5..31  Reserved                           */
+  } bit;                       /*!< Structure used for bit  access                  */
+  uint32_t reg;                /*!< Type      used for register access              */
+} WDT_SYNCBUSY_Type;
+#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+#define WDT_SYNCBUSY_OFFSET         0x8          /**< \brief (WDT_SYNCBUSY offset) Synchronization Busy */
+#define WDT_SYNCBUSY_RESETVALUE     _U_(0x00000000) /**< \brief (WDT_SYNCBUSY reset_value) Synchronization Busy */
+
+#define WDT_SYNCBUSY_ENABLE_Pos     1            /**< \brief (WDT_SYNCBUSY) Enable Synchronization Busy */
+#define WDT_SYNCBUSY_ENABLE         (_U_(0x1) << WDT_SYNCBUSY_ENABLE_Pos)
+#define WDT_SYNCBUSY_WEN_Pos        2            /**< \brief (WDT_SYNCBUSY) Window Enable Synchronization Busy */
+#define WDT_SYNCBUSY_WEN            (_U_(0x1) << WDT_SYNCBUSY_WEN_Pos)
+#define WDT_SYNCBUSY_ALWAYSON_Pos   3            /**< \brief (WDT_SYNCBUSY) Always-On Synchronization Busy */
+#define WDT_SYNCBUSY_ALWAYSON       (_U_(0x1) << WDT_SYNCBUSY_ALWAYSON_Pos)
+#define WDT_SYNCBUSY_CLEAR_Pos      4            /**< \brief (WDT_SYNCBUSY) Clear Synchronization Busy */
+#define WDT_SYNCBUSY_CLEAR          (_U_(0x1) << WDT_SYNCBUSY_CLEAR_Pos)
+#define WDT_SYNCBUSY_MASK           _U_(0x0000001E) /**< \brief (WDT_SYNCBUSY) MASK Register */
+
+/* -------- WDT_CLEAR : (WDT Offset: 0xC) ( /W  8) Clear -------- */
+#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+typedef union {
+  struct {
+    uint8_t  CLEAR:8;          /*!< bit:  0.. 7  Watchdog Clear                     */
+  } bit;                       /*!< Structure used for bit  access                  */
+  uint8_t reg;                 /*!< Type      used for register access              */
+} WDT_CLEAR_Type;
+#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+#define WDT_CLEAR_OFFSET            0xC          /**< \brief (WDT_CLEAR offset) Clear */
+#define WDT_CLEAR_RESETVALUE        _U_(0x00)    /**< \brief (WDT_CLEAR reset_value) Clear */
+
+#define WDT_CLEAR_CLEAR_Pos         0            /**< \brief (WDT_CLEAR) Watchdog Clear */
+#define WDT_CLEAR_CLEAR_Msk         (_U_(0xFF) << WDT_CLEAR_CLEAR_Pos)
+#define WDT_CLEAR_CLEAR(value)      (WDT_CLEAR_CLEAR_Msk & ((value) << WDT_CLEAR_CLEAR_Pos))
+#define   WDT_CLEAR_CLEAR_KEY_Val         _U_(0xA5)   /**< \brief (WDT_CLEAR) Clear Key */
+#define WDT_CLEAR_CLEAR_KEY         (WDT_CLEAR_CLEAR_KEY_Val       << WDT_CLEAR_CLEAR_Pos)
+#define WDT_CLEAR_MASK              _U_(0xFF)    /**< \brief (WDT_CLEAR) MASK Register */
+
+/** \brief WDT hardware registers */
+#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
+typedef struct {
+  __IO WDT_CTRLA_Type            CTRLA;       /**< \brief Offset: 0x0 (R/W  8) Control */
+  __IO WDT_CONFIG_Type           CONFIG;      /**< \brief Offset: 0x1 (R/W  8) Configuration */
+  __IO WDT_EWCTRL_Type           EWCTRL;      /**< \brief Offset: 0x2 (R/W  8) Early Warning Interrupt Control */
+       RoReg8                    Reserved1[0x1];
+  __IO WDT_INTENCLR_Type         INTENCLR;    /**< \brief Offset: 0x4 (R/W  8) Interrupt Enable Clear */
+  __IO WDT_INTENSET_Type         INTENSET;    /**< \brief Offset: 0x5 (R/W  8) Interrupt Enable Set */
+  __IO WDT_INTFLAG_Type          INTFLAG;     /**< \brief Offset: 0x6 (R/W  8) Interrupt Flag Status and Clear */
+       RoReg8                    Reserved2[0x1];
+  __I  WDT_SYNCBUSY_Type         SYNCBUSY;    /**< \brief Offset: 0x8 (R/  32) Synchronization Busy */
+  __O  WDT_CLEAR_Type            CLEAR;       /**< \brief Offset: 0xC ( /W  8) Clear */
+} Wdt;
+#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
+
+/*@}*/
+
+#endif /* _SAMD51_WDT_COMPONENT_ */