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Revision:
11:1c1ebd0324fa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LPC1768/core_cm3.h	Fri Aug 28 12:10:11 2009 +0000
@@ -0,0 +1,1410 @@
+/******************************************************************************
+ * @file:    core_cm3.h
+ * @purpose: CMSIS Cortex-M3 Core Peripheral Access Layer Header File
+ * @version: V1.30 PRE-RELEASE
+ * @date:    30. July 2009
+ *----------------------------------------------------------------------------
+ *
+ * Copyright (C) 2009 ARM Limited. All rights reserved.
+ *
+ * ARM Limited (ARM) is supplying this software for use with Cortex-Mx 
+ * processor based microcontrollers.  This file can be freely distributed 
+ * within development tools that are supporting such ARM based processors. 
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
+ * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
+ * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
+ * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
+ *
+ ******************************************************************************/
+
+#ifndef __CM3_CORE_H__
+#define __CM3_CORE_H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif 
+
+#define __CM3_CMSIS_VERSION_MAIN  (0x01)                                                       /*!< [31:16] CMSIS HAL main version */
+#define __CM3_CMSIS_VERSION_SUB   (0x30)                                                       /*!< [15:0]  CMSIS HAL sub version  */
+#define __CM3_CMSIS_VERSION       ((__CM3_CMSIS_VERSION_MAIN << 16) | __CM3_CMSIS_VERSION_SUB) /*!< CMSIS HAL version number       */
+
+#define __CORTEX_M                (0x03)                                                       /*!< Cortex core                    */
+
+/**
+ *  Lint configuration \n
+ *  ----------------------- \n
+ *
+ *  The following Lint messages will be suppressed and not shown: \n
+ *  \n
+ *    --- Error 10: --- \n
+ *    register uint32_t __regBasePri         __asm("basepri"); \n
+ *    Error 10: Expecting ';' \n
+ *     \n
+ *    --- Error 530: --- \n
+ *    return(__regBasePri); \n
+ *    Warning 530: Symbol '__regBasePri' (line 264) not initialized \n
+ *     \n
+ *    --- Error 550: --- \n
+ *      __regBasePri = (basePri & 0x1ff); \n
+ *    } \n
+ *    Warning 550: Symbol '__regBasePri' (line 271) not accessed \n
+ *     \n
+ *    --- Error 754: --- \n
+ *    uint32_t RESERVED0[24]; \n
+ *    Info 754: local structure member '<some, not used in the HAL>' (line 109, file ./cm3_core.h) not referenced \n
+ *     \n
+ *    --- Error 750: --- \n
+ *    #define __CM3_CORE_H__ \n
+ *    Info 750: local macro '__CM3_CORE_H__' (line 43, file./cm3_core.h) not referenced \n
+ *     \n
+ *    --- Error 528: --- \n
+ *    static __INLINE void NVIC_DisableIRQ(uint32_t IRQn) \n
+ *    Warning 528: Symbol 'NVIC_DisableIRQ(unsigned int)' (line 419, file ./cm3_core.h) not referenced \n
+ *     \n
+ *    --- Error 751: --- \n
+ *    } InterruptType_Type; \n
+ *    Info 751: local typedef 'InterruptType_Type' (line 170, file ./cm3_core.h) not referenced \n
+ * \n
+ * \n
+ *    Note:  To re-enable a Message, insert a space before 'lint' * \n
+ *
+ */
+
+/*lint -save */
+/*lint -e10  */
+/*lint -e530 */
+/*lint -e550 */
+/*lint -e754 */
+/*lint -e750 */
+/*lint -e528 */
+/*lint -e751 */
+
+
+#include <stdint.h>                           /* Include standard types */
+
+#if defined (__ICCARM__)
+  #include <intrinsics.h>                     /* IAR Intrinsics   */
+#endif
+
+
+#ifndef __NVIC_PRIO_BITS
+  #define __NVIC_PRIO_BITS    4               /*!< standard definition for NVIC Priority Bits */
+#endif
+
+
+
+
+/**
+ * IO definitions
+ *
+ * define access restrictions to peripheral registers
+ */
+
+#ifdef __cplusplus
+#define     __I     volatile                  /*!< defines 'read only' permissions      */
+#else
+#define     __I     volatile const            /*!< defines 'read only' permissions      */
+#endif
+#define     __O     volatile                  /*!< defines 'write only' permissions     */
+#define     __IO    volatile                  /*!< defines 'read / write' permissions   */
+
+
+
+/*******************************************************************************
+ *                 Register Abstraction
+ ******************************************************************************/
+
+
+/* System Reset */
+#define NVIC_VECTRESET              0         /*!< Vector Reset Bit             */
+#define NVIC_SYSRESETREQ            2         /*!< System Reset Request         */
+#define NVIC_AIRCR_VECTKEY    (0x5FA << 16)   /*!< AIRCR Key for write access   */
+#define NVIC_AIRCR_ENDIANESS        15        /*!< Endianess                    */
+
+/* Core Debug */
+#define CoreDebug_DEMCR_TRCENA (1 << 24)      /*!< DEMCR TRCENA enable          */
+#define ITM_TCR_ITMENA              1         /*!< ITM enable                   */
+
+
+
+
+/* memory mapping struct for Nested Vectored Interrupt Controller (NVIC) */
+typedef struct
+{
+  __IO uint32_t ISER[8];                      /*!< Interrupt Set Enable Register            */
+       uint32_t RESERVED0[24];
+  __IO uint32_t ICER[8];                      /*!< Interrupt Clear Enable Register          */
+       uint32_t RSERVED1[24];
+  __IO uint32_t ISPR[8];                      /*!< Interrupt Set Pending Register           */
+       uint32_t RESERVED2[24];
+  __IO uint32_t ICPR[8];                      /*!< Interrupt Clear Pending Register         */
+       uint32_t RESERVED3[24];
+  __IO uint32_t IABR[8];                      /*!< Interrupt Active bit Register            */
+       uint32_t RESERVED4[56];
+  __IO uint8_t  IP[240];                      /*!< Interrupt Priority Register, 8Bit wide   */
+       uint32_t RESERVED5[644];
+  __O  uint32_t STIR;                         /*!< Software Trigger Interrupt Register      */
+}  NVIC_Type;
+
+
+/* memory mapping struct for System Control Block */
+typedef struct
+{
+  __I  uint32_t CPUID;                        /*!< CPU ID Base Register                                     */
+  __IO uint32_t ICSR;                         /*!< Interrupt Control State Register                         */
+  __IO uint32_t VTOR;                         /*!< Vector Table Offset Register                             */
+  __IO uint32_t AIRCR;                        /*!< Application Interrupt / Reset Control Register           */
+  __IO uint32_t SCR;                          /*!< System Control Register                                  */
+  __IO uint32_t CCR;                          /*!< Configuration Control Register                           */
+  __IO uint8_t  SHP[12];                      /*!< System Handlers Priority Registers (4-7, 8-11, 12-15)    */
+  __IO uint32_t SHCSR;                        /*!< System Handler Control and State Register                */
+  __IO uint32_t CFSR;                         /*!< Configurable Fault Status Register                       */
+  __IO uint32_t HFSR;                         /*!< Hard Fault Status Register                               */
+  __IO uint32_t DFSR;                         /*!< Debug Fault Status Register                              */
+  __IO uint32_t MMFAR;                        /*!< Mem Manage Address Register                              */
+  __IO uint32_t BFAR;                         /*!< Bus Fault Address Register                               */
+  __IO uint32_t AFSR;                         /*!< Auxiliary Fault Status Register                          */
+  __I  uint32_t PFR[2];                       /*!< Processor Feature Register                               */
+  __I  uint32_t DFR;                          /*!< Debug Feature Register                                   */
+  __I  uint32_t ADR;                          /*!< Auxiliary Feature Register                               */
+  __I  uint32_t MMFR[4];                      /*!< Memory Model Feature Register                            */
+  __I  uint32_t ISAR[5];                      /*!< ISA Feature Register                                     */
+} SCB_Type;
+
+
+/* memory mapping struct for SysTick */
+typedef struct
+{
+  __IO uint32_t CTRL;                         /*!< SysTick Control and Status Register */
+  __IO uint32_t LOAD;                         /*!< SysTick Reload Value Register       */
+  __IO uint32_t VAL;                          /*!< SysTick Current Value Register      */
+  __I  uint32_t CALIB;                        /*!< SysTick Calibration Register        */
+} SysTick_Type;
+
+
+/* memory mapping structur for ITM */
+typedef struct
+{
+  __O  union  
+  {
+    __O  uint8_t    u8;                       /*!< ITM Stimulus Port 8-bit               */
+    __O  uint16_t   u16;                      /*!< ITM Stimulus Port 16-bit              */
+    __O  uint32_t   u32;                      /*!< ITM Stimulus Port 32-bit              */
+  }  PORT [32];                               /*!< ITM Stimulus Port Registers           */
+       uint32_t RESERVED0[864];
+  __IO uint32_t TER;                          /*!< ITM Trace Enable Register             */
+       uint32_t RESERVED1[15];
+  __IO uint32_t TPR;                          /*!< ITM Trace Privilege Register          */
+       uint32_t RESERVED2[15];
+  __IO uint32_t TCR;                          /*!< ITM Trace Control Register            */
+       uint32_t RESERVED3[29];
+  __IO uint32_t IWR;                          /*!< ITM Integration Write Register        */
+  __IO uint32_t IRR;                          /*!< ITM Integration Read Register         */
+  __IO uint32_t IMCR;                         /*!< ITM Integration Mode Control Register */
+       uint32_t RESERVED4[43];
+  __IO uint32_t LAR;                          /*!< ITM Lock Access Register              */
+  __IO uint32_t LSR;                          /*!< ITM Lock Status Register              */
+       uint32_t RESERVED5[6];
+  __I  uint32_t PID4;                         /*!< ITM Product ID Registers              */
+  __I  uint32_t PID5;
+  __I  uint32_t PID6;
+  __I  uint32_t PID7;
+  __I  uint32_t PID0;
+  __I  uint32_t PID1;
+  __I  uint32_t PID2;
+  __I  uint32_t PID3;
+  __I  uint32_t CID0;
+  __I  uint32_t CID1;
+  __I  uint32_t CID2;
+  __I  uint32_t CID3;
+} ITM_Type;
+
+
+/* memory mapped struct for Interrupt Type */
+typedef struct
+{
+       uint32_t RESERVED0;
+  __I  uint32_t ICTR;                         /*!< Interrupt Control Type Register  */
+#if ((defined __CM3_REV) && (__CM3_REV >= 0x200))
+  __IO uint32_t ACTLR;                        /*!< Auxiliary Control Register       */
+#else
+       uint32_t RESERVED1;
+#endif
+} InterruptType_Type;
+
+
+/* Memory Protection Unit */
+#if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1)
+typedef struct
+{
+  __I  uint32_t TYPE;                         /*!< MPU Type Register                               */
+  __IO uint32_t CTRL;                         /*!< MPU Control Register                            */
+  __IO uint32_t RNR;                          /*!< MPU Region RNRber Register                      */
+  __IO uint32_t RBAR;                         /*!< MPU Region Base Address Register                */
+  __IO uint32_t RASR;                         /*!< MPU Region Attribute and Size Register          */
+  __IO uint32_t RBAR_A1;                      /*!< MPU Alias 1 Region Base Address Register        */
+  __IO uint32_t RASR_A1;                      /*!< MPU Alias 1 Region Attribute and Size Register  */
+  __IO uint32_t RBAR_A2;                      /*!< MPU Alias 2 Region Base Address Register        */
+  __IO uint32_t RASR_A2;                      /*!< MPU Alias 2 Region Attribute and Size Register  */
+  __IO uint32_t RBAR_A3;                      /*!< MPU Alias 3 Region Base Address Register        */
+  __IO uint32_t RASR_A3;                      /*!< MPU Alias 3 Region Attribute and Size Register  */
+} MPU_Type;
+#endif
+
+
+/* Core Debug Register */
+typedef struct
+{
+  __IO uint32_t DHCSR;                        /*!< Debug Halting Control and Status Register       */
+  __O  uint32_t DCRSR;                        /*!< Debug Core Register Selector Register           */
+  __IO uint32_t DCRDR;                        /*!< Debug Core Register Data Register               */
+  __IO uint32_t DEMCR;                        /*!< Debug Exception and Monitor Control Register    */
+} CoreDebug_Type;
+
+
+/* Memory mapping of Cortex-M3 Hardware */
+#define SCS_BASE            (0xE000E000)                              /*!< System Control Space Base Address    */
+#define ITM_BASE            (0xE0000000)                              /*!< ITM Base Address                     */
+#define CoreDebug_BASE      (0xE000EDF0)                              /*!< Core Debug Base Address              */
+#define SysTick_BASE        (SCS_BASE +  0x0010)                      /*!< SysTick Base Address                 */
+#define NVIC_BASE           (SCS_BASE +  0x0100)                      /*!< NVIC Base Address                    */
+#define SCB_BASE            (SCS_BASE +  0x0D00)                      /*!< System Control Block Base Address    */
+
+#define InterruptType       ((InterruptType_Type *) SCS_BASE)         /*!< Interrupt Type Register              */
+#define SCB                 ((SCB_Type *)           SCB_BASE)         /*!< SCB configuration struct             */
+#define SysTick             ((SysTick_Type *)       SysTick_BASE)     /*!< SysTick configuration struct         */
+#define NVIC                ((NVIC_Type *)          NVIC_BASE)        /*!< NVIC configuration struct            */
+#define ITM                 ((ITM_Type *)           ITM_BASE)         /*!< ITM configuration struct             */
+#define CoreDebug           ((CoreDebug_Type *)     CoreDebug_BASE)   /*!< Core Debug configuration struct      */
+
+#if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1)
+  #define MPU_BASE          (SCS_BASE +  0x0D90)                      /*!< Memory Protection Unit               */
+  #define MPU               ((MPU_Type*)            MPU_BASE)         /*!< Memory Protection Unit               */
+#endif
+
+
+/*******************************************************************************
+ *                Hardware Abstraction Layer
+ ******************************************************************************/
+
+
+#if defined ( __CC_ARM   )
+  #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler          */
+  #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler       */
+
+#elif defined ( __ICCARM__ )
+  #define __ASM           __asm                                       /*!< asm keyword for IAR Compiler           */
+  #define __INLINE        inline                                      /*!< inline keyword for IAR Compiler. Only avaiable in High optimization mode! */
+
+#elif defined   (  __GNUC__  )
+  #define __ASM            __asm                                      /*!< asm keyword for GNU Compiler          */
+  #define __INLINE         inline                                     /*!< inline keyword for GNU Compiler       */
+
+#elif defined   (  __TASKING__  )
+  #define __ASM            __asm                                      /*!< asm keyword for TASKING Compiler          */
+  #define __INLINE         inline                                     /*!< inline keyword for TASKING Compiler       */
+
+#endif
+
+
+/* ###################  Compiler specific Intrinsics  ########################### */
+
+#if defined ( __CC_ARM   ) /*------------------RealView Compiler -----------------*/
+/* ARM armcc specific functions */
+
+#define __enable_fault_irq                __enable_fiq
+#define __disable_fault_irq               __disable_fiq
+
+#define __NOP                             __nop
+#define __WFI                             __wfi
+#define __WFE                             __wfe
+#define __SEV                             __sev
+#define __ISB()                           __isb(0)
+#define __DSB()                           __dsb(0)
+#define __DMB()                           __dmb(0)
+#define __REV                             __rev
+#define __RBIT                            __rbit
+#define __LDREXB(ptr)                     ((unsigned char ) __ldrex(ptr))
+#define __LDREXH(ptr)                     ((unsigned short) __ldrex(ptr))
+#define __LDREXW(ptr)                     ((unsigned int  ) __ldrex(ptr))
+#define __STREXB(value, ptr)              __strex(value, ptr)
+#define __STREXH(value, ptr)              __strex(value, ptr)
+#define __STREXW(value, ptr)              __strex(value, ptr)
+
+
+/* intrinsic unsigned long long __ldrexd(volatile void *ptr) */
+/* intrinsic int __strexd(unsigned long long val, volatile void *ptr) */
+/* intrinsic void __enable_irq();     */
+/* intrinsic void __disable_irq();    */
+
+
+/**
+ * @brief  Return the Process Stack Pointer
+ *
+ * @param  none
+ * @return uint32_t ProcessStackPointer
+ *
+ * Return the actual process stack pointer
+ */
+extern uint32_t __get_PSP(void);
+
+/**
+ * @brief  Set the Process Stack Pointer
+ *
+ * @param  uint32_t Process Stack Pointer
+ * @return none
+ *
+ * Assign the value ProcessStackPointer to the MSP 
+ * (process stack pointer) Cortex processor register
+ */
+extern void __set_PSP(uint32_t topOfProcStack);
+
+/**
+ * @brief  Return the Main Stack Pointer
+ *
+ * @param  none
+ * @return uint32_t Main Stack Pointer
+ *
+ * Return the current value of the MSP (main stack pointer)
+ * Cortex processor register
+ */
+extern uint32_t __get_MSP(void);
+
+/**
+ * @brief  Set the Main Stack Pointer
+ *
+ * @param  uint32_t Main Stack Pointer
+ * @return none
+ *
+ * Assign the value mainStackPointer to the MSP 
+ * (main stack pointer) Cortex processor register
+ */
+extern void __set_MSP(uint32_t topOfMainStack);
+
+/**
+ * @brief  Reverse byte order in unsigned short value
+ *
+ * @param  uint16_t value to reverse
+ * @return uint32_t reversed value
+ *
+ * Reverse byte order in unsigned short value
+ */
+extern uint32_t __REV16(uint16_t value);
+
+/*
+ * @brief  Reverse byte order in signed short value with sign extension to integer
+ *
+ * @param  int16_t value to reverse
+ * @return int32_t reversed value
+ *
+ * Reverse byte order in signed short value with sign extension to integer
+ */
+extern int32_t __REVSH(int16_t value);
+
+
+#if (__ARMCC_VERSION < 400000)
+
+/**
+ * @brief  Remove the exclusive lock created by ldrex
+ *
+ * @param  none
+ * @return none
+ *
+ * Removes the exclusive lock which is created by ldrex.
+ */
+extern void __CLREX(void);
+
+/**
+ * @brief  Return the Base Priority value
+ *
+ * @param  none
+ * @return uint32_t BasePriority
+ *
+ * Return the content of the base priority register
+ */
+extern uint32_t __get_BASEPRI(void);
+
+/**
+ * @brief  Set the Base Priority value
+ *
+ * @param  uint32_t BasePriority
+ * @return none
+ *
+ * Set the base priority register
+ */
+extern void __set_BASEPRI(uint32_t basePri);
+
+/**
+ * @brief  Return the Priority Mask value
+ *
+ * @param  none
+ * @return uint32_t PriMask
+ *
+ * Return the state of the priority mask bit from the priority mask
+ * register
+ */
+extern uint32_t __get_PRIMASK(void);
+
+/**
+ * @brief  Set the Priority Mask value
+ *
+ * @param  uint32_t PriMask
+ * @return none
+ *
+ * Set the priority mask bit in the priority mask register
+ */
+extern void __set_PRIMASK(uint32_t priMask);
+
+/**
+ * @brief  Return the Fault Mask value
+ *
+ * @param  none
+ * @return uint32_t FaultMask
+ *
+ * Return the content of the fault mask register
+ */
+extern uint32_t __get_FAULTMASK(void);
+
+/**
+ * @brief  Set the Fault Mask value
+ *
+ * @param  uint32_t faultMask value
+ * @return none
+ *
+ * Set the fault mask register
+ */
+extern void __set_FAULTMASK(uint32_t faultMask);
+
+/**
+ * @brief  Return the Control Register value
+ * 
+ * @param  none
+ * @return uint32_t Control value
+ *
+ * Return the content of the control register
+ */
+extern uint32_t __get_CONTROL(void);
+
+/**
+ * @brief  Set the Control Register value
+ *
+ * @param  uint32_t Control value
+ * @return none
+ *
+ * Set the control register
+ */
+extern void __set_CONTROL(uint32_t control);
+
+#else  /* (__ARMCC_VERSION >= 400000)  */
+
+
+/**
+ * @brief  Remove the exclusive lock created by ldrex
+ *
+ * @param  none
+ * @return none
+ *
+ * Removes the exclusive lock which is created by ldrex.
+ */
+#define __CLREX                           __clrex
+
+/**
+ * @brief  Return the Base Priority value
+ *
+ * @param  none
+ * @return uint32_t BasePriority
+ *
+ * Return the content of the base priority register
+ */
+static __INLINE uint32_t  __get_BASEPRI(void)
+{
+  register uint32_t __regBasePri         __ASM("basepri");
+  return(__regBasePri);
+}
+
+/**
+ * @brief  Set the Base Priority value
+ *
+ * @param  uint32_t BasePriority
+ * @return none
+ *
+ * Set the base priority register
+ */
+static __INLINE void __set_BASEPRI(uint32_t basePri)
+{
+  register uint32_t __regBasePri         __ASM("basepri");
+  __regBasePri = (basePri & 0xff);
+}
+
+/**
+ * @brief  Return the Priority Mask value
+ *
+ * @param  none
+ * @return uint32_t PriMask
+ *
+ * Return the state of the priority mask bit from the priority mask
+ * register
+ */
+static __INLINE uint32_t __get_PRIMASK(void)
+{
+  register uint32_t __regPriMask         __ASM("primask");
+  return(__regPriMask);
+}
+
+/**
+ * @brief  Set the Priority Mask value
+ *
+ * @param  uint32_t PriMask
+ * @return none
+ *
+ * Set the priority mask bit in the priority mask register
+ */
+static __INLINE void __set_PRIMASK(uint32_t priMask)
+{
+  register uint32_t __regPriMask         __ASM("primask");
+  __regPriMask = (priMask);
+}
+
+/**
+ * @brief  Return the Fault Mask value
+ *
+ * @param  none
+ * @return uint32_t FaultMask
+ *
+ * Return the content of the fault mask register
+ */
+static __INLINE uint32_t __get_FAULTMASK(void)
+{
+  register uint32_t __regFaultMask       __ASM("faultmask");
+  return(__regFaultMask);
+}
+
+/**
+ * @brief  Set the Fault Mask value
+ *
+ * @param  uint32_t faultMask value
+ * @return none
+ *
+ * Set the fault mask register
+ */
+static __INLINE void __set_FAULTMASK(uint32_t faultMask)
+{
+  register uint32_t __regFaultMask       __ASM("faultmask");
+  __regFaultMask = (faultMask & 1);
+}
+
+/**
+ * @brief  Return the Control Register value
+ * 
+ * @param  none
+ * @return uint32_t Control value
+ *
+ * Return the content of the control register
+ */
+static __INLINE uint32_t __get_CONTROL(void)
+{
+  register uint32_t __regControl         __ASM("control");
+  return(__regControl);
+}
+
+/**
+ * @brief  Set the Control Register value
+ *
+ * @param  uint32_t Control value
+ * @return none
+ *
+ * Set the control register
+ */
+static __INLINE void __set_CONTROL(uint32_t control)
+{
+  register uint32_t __regControl         __ASM("control");
+  __regControl = control;
+}
+
+#endif /* __ARMCC_VERSION  */ 
+
+
+
+#elif (defined (__ICCARM__)) /*------------------ ICC Compiler -------------------*/
+/* IAR iccarm specific functions */
+
+#define __enable_irq                              __enable_interrupt        /*!< global Interrupt enable */
+#define __disable_irq                             __disable_interrupt       /*!< global Interrupt disable */
+
+static __INLINE void __enable_fault_irq()         { __ASM ("cpsie f"); }
+static __INLINE void __disable_fault_irq()        { __ASM ("cpsid f"); }
+
+#define __NOP                                     __no_operation()          /*!< no operation intrinsic in IAR Compiler */ 
+static __INLINE  void __WFI()                     { __ASM ("wfi"); }
+static __INLINE  void __WFE()                     { __ASM ("wfe"); }
+static __INLINE  void __SEV()                     { __ASM ("sev"); }
+static __INLINE  void __CLREX()                   { __ASM ("clrex"); }
+
+/* intrinsic void __ISB(void)                                     */
+/* intrinsic void __DSB(void)                                     */
+/* intrinsic void __DMB(void)                                     */
+/* intrinsic void __set_PRIMASK();                                */
+/* intrinsic void __get_PRIMASK();                                */
+/* intrinsic void __set_FAULTMASK();                              */
+/* intrinsic void __get_FAULTMASK();                              */
+/* intrinsic uint32_t __REV(uint32_t value);                      */
+/* intrinsic uint32_t __REVSH(uint32_t value);                    */
+/* intrinsic unsigned long __STREX(unsigned long, unsigned long); */
+/* intrinsic unsigned long __LDREX(unsigned long *);              */
+
+
+/**
+ * @brief  Return the Process Stack Pointer
+ *
+ * @param  none
+ * @return uint32_t ProcessStackPointer
+ *
+ * Return the actual process stack pointer
+ */
+extern uint32_t __get_PSP(void);
+
+/**
+ * @brief  Set the Process Stack Pointer
+ *
+ * @param  uint32_t Process Stack Pointer
+ * @return none
+ *
+ * Assign the value ProcessStackPointer to the MSP 
+ * (process stack pointer) Cortex processor register
+ */
+extern void __set_PSP(uint32_t topOfProcStack);
+
+/**
+ * @brief  Return the Main Stack Pointer
+ *
+ * @param  none
+ * @return uint32_t Main Stack Pointer
+ *
+ * Return the current value of the MSP (main stack pointer)
+ * Cortex processor register
+ */
+extern uint32_t __get_MSP(void);
+
+/**
+ * @brief  Set the Main Stack Pointer
+ *
+ * @param  uint32_t Main Stack Pointer
+ * @return none
+ *
+ * Assign the value mainStackPointer to the MSP 
+ * (main stack pointer) Cortex processor register
+ */
+extern void __set_MSP(uint32_t topOfMainStack);
+
+/**
+ * @brief  Reverse byte order in unsigned short value
+ *
+ * @param  uint16_t value to reverse
+ * @return uint32_t reversed value
+ *
+ * Reverse byte order in unsigned short value
+ */
+extern uint32_t __REV16(uint16_t value);
+
+/**
+ * @brief  Reverse bit order of value
+ *
+ * @param  uint32_t value to reverse
+ * @return uint32_t reversed value
+ *
+ * Reverse bit order of value
+ */
+extern uint32_t __RBIT(uint32_t value);
+
+/**
+ * @brief  LDR Exclusive
+ *
+ * @param  uint8_t* address
+ * @return uint8_t value of (*address)
+ *
+ * Exclusive LDR command
+ */
+extern uint8_t __LDREXB(uint8_t *addr);
+
+/**
+ * @brief  LDR Exclusive
+ *
+ * @param  uint16_t* address
+ * @return uint16_t value of (*address)
+ *
+ * Exclusive LDR command
+ */
+extern uint16_t __LDREXH(uint16_t *addr);
+
+/**
+ * @brief  LDR Exclusive
+ *
+ * @param  uint32_t* address
+ * @return uint32_t value of (*address)
+ *
+ * Exclusive LDR command
+ */
+extern uint32_t __LDREXW(uint32_t *addr);
+
+/**
+ * @brief  STR Exclusive
+ *
+ * @param  uint8_t *address
+ * @param  uint8_t value to store
+ * @return uint32_t successful / failed
+ *
+ * Exclusive STR command
+ */
+extern uint32_t __STREXB(uint8_t value, uint8_t *addr);
+
+/**
+ * @brief  STR Exclusive
+ *
+ * @param  uint16_t *address
+ * @param  uint16_t value to store
+ * @return uint32_t successful / failed
+ *
+ * Exclusive STR command
+ */
+extern uint32_t __STREXH(uint16_t value, uint16_t *addr);
+
+/**
+ * @brief  STR Exclusive
+ *
+ * @param  uint32_t *address
+ * @param  uint32_t value to store
+ * @return uint32_t successful / failed
+ *
+ * Exclusive STR command
+ */
+extern uint32_t __STREXW(uint32_t value, uint32_t *addr);
+
+
+
+#elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/
+/* GNU gcc specific functions */
+
+static __INLINE void __enable_irq()               { __ASM volatile ("cpsie i"); }
+static __INLINE void __disable_irq()              { __ASM volatile ("cpsid i"); }
+
+static __INLINE void __enable_fault_irq()         { __ASM volatile ("cpsie f"); }
+static __INLINE void __disable_fault_irq()        { __ASM volatile ("cpsid f"); }
+
+static __INLINE void __NOP()                      { __ASM volatile ("nop"); }
+static __INLINE void __WFI()                      { __ASM volatile ("wfi"); }
+static __INLINE void __WFE()                      { __ASM volatile ("wfe"); }
+static __INLINE void __SEV()                      { __ASM volatile ("sev"); }
+static __INLINE void __ISB()                      { __ASM volatile ("isb"); }
+static __INLINE void __DSB()                      { __ASM volatile ("dsb"); }
+static __INLINE void __DMB()                      { __ASM volatile ("dmb"); }
+static __INLINE void __CLREX()                    { __ASM volatile ("clrex"); }
+
+
+/**
+ * @brief  Return the Process Stack Pointer
+ *
+ * @param  none
+ * @return uint32_t ProcessStackPointer
+ *
+ * Return the actual process stack pointer
+ */
+extern uint32_t __get_PSP(void);
+
+/**
+ * @brief  Set the Process Stack Pointer
+ *
+ * @param  uint32_t Process Stack Pointer
+ * @return none
+ *
+ * Assign the value ProcessStackPointer to the MSP 
+ * (process stack pointer) Cortex processor register
+ */
+extern void __set_PSP(uint32_t topOfProcStack);
+
+/**
+ * @brief  Return the Main Stack Pointer
+ *
+ * @param  none
+ * @return uint32_t Main Stack Pointer
+ *
+ * Return the current value of the MSP (main stack pointer)
+ * Cortex processor register
+ */
+extern uint32_t __get_MSP(void);
+
+/**
+ * @brief  Set the Main Stack Pointer
+ *
+ * @param  uint32_t Main Stack Pointer
+ * @return none
+ *
+ * Assign the value mainStackPointer to the MSP 
+ * (main stack pointer) Cortex processor register
+ */
+extern void __set_MSP(uint32_t topOfMainStack);
+
+/**
+ * @brief  Return the Base Priority value
+ *
+ * @param  none
+ * @return uint32_t BasePriority
+ *
+ * Return the content of the base priority register
+ */
+extern uint32_t __get_BASEPRI(void);
+
+/**
+ * @brief  Set the Base Priority value
+ *
+ * @param  uint32_t BasePriority
+ * @return none
+ *
+ * Set the base priority register
+ */
+extern void __set_BASEPRI(uint32_t basePri);
+
+/**
+ * @brief  Return the Priority Mask value
+ *
+ * @param  none
+ * @return uint32_t PriMask
+ *
+ * Return the state of the priority mask bit from the priority mask
+ * register
+ */
+extern uint32_t  __get_PRIMASK(void);
+
+/**
+ * @brief  Set the Priority Mask value
+ *
+ * @param  uint32_t PriMask
+ * @return none
+ *
+ * Set the priority mask bit in the priority mask register
+ */
+extern void __set_PRIMASK(uint32_t priMask);
+
+/**
+ * @brief  Return the Fault Mask value
+ *
+ * @param  none
+ * @return uint32_t FaultMask
+ *
+ * Return the content of the fault mask register
+ */
+extern uint32_t __get_FAULTMASK(void);
+
+/**
+ * @brief  Set the Fault Mask value
+ *
+ * @param  uint32_t faultMask value
+ * @return none
+ *
+ * Set the fault mask register
+ */
+extern void __set_FAULTMASK(uint32_t faultMask);
+
+/**
+ * @brief  Return the Control Register value
+* 
+*  @param  none
+*  @return uint32_t Control value
+ *
+ * Return the content of the control register
+ */
+extern uint32_t __get_CONTROL(void);
+
+/**
+ * @brief  Set the Control Register value
+ *
+ * @param  uint32_t Control value
+ * @return none
+ *
+ * Set the control register
+ */
+extern void __set_CONTROL(uint32_t control);
+
+/**
+ * @brief  Reverse byte order in integer value
+ *
+ * @param  uint32_t value to reverse
+ * @return uint32_t reversed value
+ *
+ * Reverse byte order in integer value
+ */
+extern uint32_t __REV(uint32_t value);
+
+/**
+ * @brief  Reverse byte order in unsigned short value
+ *
+ * @param  uint16_t value to reverse
+ * @return uint32_t reversed value
+ *
+ * Reverse byte order in unsigned short value
+ */
+extern uint32_t __REV16(uint16_t value);
+
+/*
+ * Reverse byte order in signed short value with sign extension to integer
+ *
+ * @param  int16_t value to reverse
+ * @return int32_t reversed value
+ *
+ * @brief  Reverse byte order in signed short value with sign extension to integer
+ */
+extern int32_t __REVSH(int16_t value);
+
+/**
+ * @brief  Reverse bit order of value
+ *
+ * @param  uint32_t value to reverse
+ * @return uint32_t reversed value
+ *
+ * Reverse bit order of value
+ */
+extern uint32_t __RBIT(uint32_t value);
+
+/**
+ * @brief  LDR Exclusive
+ *
+ * @param  uint8_t* address
+ * @return uint8_t value of (*address)
+ *
+ * Exclusive LDR command
+ */
+extern uint8_t __LDREXB(uint8_t *addr);
+
+/**
+ * @brief  LDR Exclusive
+ *
+ * @param  uint16_t* address
+ * @return uint16_t value of (*address)
+ *
+ * Exclusive LDR command
+ */
+extern uint16_t __LDREXH(uint16_t *addr);
+
+/**
+ * @brief  LDR Exclusive
+ *
+ * @param  uint32_t* address
+ * @return uint32_t value of (*address)
+ *
+ * Exclusive LDR command
+ */
+extern uint32_t __LDREXW(uint32_t *addr);
+
+/**
+ * @brief  STR Exclusive
+ *
+ * @param  uint8_t *address
+ * @param  uint8_t value to store
+ * @return uint32_t successful / failed
+ *
+ * Exclusive STR command
+ */
+extern uint32_t __STREXB(uint8_t value, uint8_t *addr);
+
+/**
+ * @brief  STR Exclusive
+ *
+ * @param  uint16_t *address
+ * @param  uint16_t value to store
+ * @return uint32_t successful / failed
+ *
+ * Exclusive STR command
+ */
+extern uint32_t __STREXH(uint16_t value, uint16_t *addr);
+
+/**
+ * @brief  STR Exclusive
+ *
+ * @param  uint32_t *address
+ * @param  uint32_t value to store
+ * @return uint32_t successful / failed
+ *
+ * Exclusive STR command
+ */
+extern uint32_t __STREXW(uint32_t value, uint32_t *addr);
+
+
+#elif (defined (__TASKING__)) /*------------------ TASKING Compiler ---------------------*/
+/* TASKING carm specific functions */
+
+/*
+ * The CMSIS functions have been implemented as intrinsics in the compiler.
+ * Please use "carm -?i" to get an up to date list of all instrinsics,
+ * Including the CMSIS ones.
+ */
+
+#endif
+
+
+
+/* ##########################   NVIC functions  #################################### */
+
+
+/**
+ * @brief  Set the Priority Grouping in NVIC Interrupt Controller
+ *
+ * @param  uint32_t priority_grouping is priority grouping field
+ * @return none 
+ *
+ * Set the priority grouping field using the required unlock sequence.
+ * The parameter priority_grouping is assigned to the field 
+ * SCB->AIRCR [10:8] PRIGROUP field. Only values from 0..7 are used.
+ * In case of a conflict between priority grouping and available
+ * priority bits (__NVIC_PRIO_BITS) the smallest possible priority group is set.
+ */
+static __INLINE void NVIC_SetPriorityGrouping(uint32_t PriorityGroup)
+{
+  uint32_t reg_value;
+  uint32_t PriorityGroupTmp = (PriorityGroup & 0x07);                         /* only values 0..7 are used          */
+  
+  reg_value  = SCB->AIRCR;                                                    /* read old register configuration    */
+  reg_value &= ~((0xFFFFU << 16) | (0x0F << 8));                              /* clear bits to change               */
+  reg_value  = ((reg_value | NVIC_AIRCR_VECTKEY | (PriorityGroupTmp << 8)));  /* Insert write key and priorty group */
+  SCB->AIRCR = reg_value;
+}
+
+/**
+ * @brief  Get the Priority Grouping from NVIC Interrupt Controller
+ *
+ * @param  none
+ * @return uint32_t   priority grouping field 
+ *
+ * Get the priority grouping from NVIC Interrupt Controller.
+ * priority grouping is SCB->AIRCR [10:8] PRIGROUP field.
+ */
+static __INLINE uint32_t NVIC_GetPriorityGrouping(void)
+{
+  return ((SCB->AIRCR >> 8) & 0x07);                                          /* read priority grouping field */
+}
+
+/**
+ * @brief  Enable Interrupt in NVIC Interrupt Controller
+ *
+ * @param  IRQn_Type IRQn specifies the interrupt number
+ * @return none 
+ *
+ * Enable a device specific interupt in the NVIC interrupt controller.
+ * The interrupt number cannot be a negative value.
+ */
+static __INLINE void NVIC_EnableIRQ(IRQn_Type IRQn)
+{
+  NVIC->ISER[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); /* enable interrupt */
+}
+
+/**
+ * @brief  Disable the interrupt line for external interrupt specified
+ * 
+ * @param  IRQn_Type IRQn is the positive number of the external interrupt
+ * @return none
+ * 
+ * Disable a device specific interupt in the NVIC interrupt controller.
+ * The interrupt number cannot be a negative value.
+ */
+static __INLINE void NVIC_DisableIRQ(IRQn_Type IRQn)
+{
+  NVIC->ICER[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); /* disable interrupt */
+}
+
+/**
+ * @brief  Read the interrupt pending bit for a device specific interrupt source
+ * 
+ * @param  IRQn_Type IRQn is the number of the device specifc interrupt
+ * @return uint32_t 1 if pending interrupt else 0
+ *
+ * Read the pending register in NVIC and return 1 if its status is pending, 
+ * otherwise it returns 0
+ */
+static __INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
+{
+  return((uint32_t) ((NVIC->ISPR[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0)); /* Return 1 if pending else 0 */
+}
+
+/**
+ * @brief  Set the pending bit for an external interrupt
+ * 
+ * @param  IRQn_Type IRQn is the Number of the interrupt
+ * @return none
+ *
+ * Set the pending bit for the specified interrupt.
+ * The interrupt number cannot be a negative value.
+ */
+static __INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn)
+{
+  NVIC->ISPR[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); /* set interrupt pending */
+}
+
+/**
+ * @brief  Clear the pending bit for an external interrupt
+ *
+ * @param  IRQn_Type IRQn is the Number of the interrupt
+ * @return none
+ *
+ * Clear the pending bit for the specified interrupt. 
+ * The interrupt number cannot be a negative value.
+ */
+static __INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
+{
+  NVIC->ICPR[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); /* Clear pending interrupt */
+}
+
+/**
+ * @brief  Read the active bit for an external interrupt
+ *
+ * @param  IRQn_Type  IRQn is the Number of the interrupt
+ * @return uint32_t   1 if active else 0
+ *
+ * Read the active register in NVIC and returns 1 if its status is active, 
+ * otherwise it returns 0.
+ */
+static __INLINE uint32_t NVIC_GetActive(IRQn_Type IRQn)
+{
+  return((uint32_t)((NVIC->IABR[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0)); /* Return 1 if active else 0 */
+}
+
+/**
+ * @brief  Set the priority for an interrupt
+ *
+ * @param  IRQn_Type IRQn is the Number of the interrupt
+ * @param  priority is the priority for the interrupt
+ * @return none
+ *
+ * Set the priority for the specified interrupt. The interrupt 
+ * number can be positive to specify an external (device specific) 
+ * interrupt, or negative to specify an internal (core) interrupt. \n
+ *
+ * Note: The priority cannot be set for every core interrupt.
+ */
+static __INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
+{
+  if(IRQn < 0) {
+    SCB->SHP[((uint32_t)(IRQn) & 0xF)-4] = ((priority << (8 - __NVIC_PRIO_BITS)) & 0xff); } /* set Priority for Cortex-M3 System Interrupts */
+  else {
+    NVIC->IP[(uint32_t)(IRQn)] = ((priority << (8 - __NVIC_PRIO_BITS)) & 0xff);    }        /* set Priority for device specific Interrupts      */
+}
+
+/**
+ * @brief  Read the priority for an interrupt
+ *
+ * @param  IRQn_Type IRQn is the Number of the interrupt
+ * @return uint32_t  priority is the priority for the interrupt
+ *
+ * Read the priority for the specified interrupt. The interrupt 
+ * number can be positive to specify an external (device specific) 
+ * interrupt, or negative to specify an internal (core) interrupt.
+ *
+ * The returned priority value is automatically aligned to the implemented
+ * priority bits of the microcontroller.
+ *
+ * Note: The priority cannot be set for every core interrupt.
+ */
+static __INLINE uint32_t NVIC_GetPriority(IRQn_Type IRQn)
+{
+
+  if(IRQn < 0) {
+    return((uint32_t)(SCB->SHP[((uint32_t)(IRQn) & 0xF)-4] >> (8 - __NVIC_PRIO_BITS)));  } /* get priority for Cortex-M3 system interrupts */
+  else {
+    return((uint32_t)(NVIC->IP[(uint32_t)(IRQn)]           >> (8 - __NVIC_PRIO_BITS)));  } /* get priority for device specific interrupts  */
+}
+
+
+/**
+ * @brief  Encode the priority for an interrupt
+ *
+ * @param  uint32_t PriorityGroup   is the used priority group
+ * @param  uint32_t PreemptPriority is the preemptive priority value (starting from 0)
+ * @param  uint32_t SubPriority     is the sub priority value (starting from 0)
+ * @return uint32_t                    the priority for the interrupt
+ *
+ * Encode the priority for an interrupt with the given priority group,
+ * preemptive priority value and sub priority value.
+ * In case of a conflict between priority grouping and available
+ * priority bits (__NVIC_PRIO_BITS) the samllest possible priority group is set.
+ *
+ * The returned priority value can be used for NVIC_SetPriority(...) function
+ */
+static __INLINE uint32_t NVIC_EncodePriority (uint32_t PriorityGroup, uint32_t PreemptPriority, uint32_t SubPriority)
+{
+  uint32_t PriorityGroupTmp = (PriorityGroup & 0x07);                         /* only values 0..7 are used          */
+  uint32_t PreemptPriorityBits;
+  uint32_t SubPriorityBits;
+
+  PreemptPriorityBits = ((7 - PriorityGroupTmp) > __NVIC_PRIO_BITS) ? __NVIC_PRIO_BITS : 7 - PriorityGroupTmp;
+  SubPriorityBits     = ((PriorityGroupTmp + __NVIC_PRIO_BITS) < 7) ? 0 : PriorityGroupTmp - 7 + __NVIC_PRIO_BITS;
+ 
+  return (
+           ((PreemptPriority & ((1 << (PreemptPriorityBits)) - 1)) << SubPriorityBits) |
+           ((SubPriority     & ((1 << (SubPriorityBits    )) - 1)))
+         );
+}
+
+
+/**
+ * @brief  Decode the priority of an interrupt
+ *
+ * @param  uint32_t   Priority       the priority for the interrupt
+ * @param  uint32_t   PrioGroup   is the used priority group
+ * @param  uint32_t* pPreemptPrio is the preemptive priority value (starting from 0)
+ * @param  uint32_t* pSubPrio     is the sub priority value (starting from 0)
+ * @return none
+ *
+ * Decode an interrupt priority value with the given priority group to 
+ * preemptive priority value and sub priority value.
+ * In case of a conflict between priority grouping and available
+ * priority bits (__NVIC_PRIO_BITS) the samllest possible priority group is set.
+ *
+ * The priority value can be retrieved with NVIC_GetPriority(...) function
+ */
+static __INLINE void NVIC_DecodePriority (uint32_t Priority, uint32_t PriorityGroup, uint32_t* pPreemptPriority, uint32_t* pSubPriority)
+{
+  uint32_t PriorityGroupTmp = (PriorityGroup & 0x07);                         /* only values 0..7 are used          */
+  uint32_t PreemptPriorityBits;
+  uint32_t SubPriorityBits;
+
+  PreemptPriorityBits = ((7 - PriorityGroupTmp) > __NVIC_PRIO_BITS) ? __NVIC_PRIO_BITS : 7 - PriorityGroupTmp;
+  SubPriorityBits     = ((PriorityGroupTmp + __NVIC_PRIO_BITS) < 7) ? 0 : PriorityGroupTmp - 7 + __NVIC_PRIO_BITS;
+  
+  *pPreemptPriority = (Priority >> SubPriorityBits) & ((1 << (PreemptPriorityBits)) - 1);
+  *pSubPriority     = (Priority                   ) & ((1 << (SubPriorityBits    )) - 1);
+}
+
+
+
+/* ##################################    SysTick function  ############################################ */
+
+#if (!defined (__Vendor_SysTickConfig)) || (__Vendor_SysTickConfig == 0)
+
+/* SysTick constants */
+#define SYSTICK_ENABLE              0                                          /* Config-Bit to start or stop the SysTick Timer                         */
+#define SYSTICK_TICKINT             1                                          /* Config-Bit to enable or disable the SysTick interrupt                 */
+#define SYSTICK_CLKSOURCE           2                                          /* Clocksource has the offset 2 in SysTick Control and Status Register   */
+#define SYSTICK_MAXCOUNT       ((1<<24) -1)                                    /* SysTick MaxCount                                                      */
+
+/**
+ * @brief  Initialize and start the SysTick counter and its interrupt.
+ *
+ * @param  uint32_t ticks is the number of ticks between two interrupts
+ * @return  none
+ *
+ * Initialise the system tick timer and its interrupt and start the
+ * system tick timer / counter in free running mode to generate 
+ * periodical interrupts.
+ */
+static __INLINE uint32_t SysTick_Config(uint32_t ticks)
+{ 
+  if (ticks > SYSTICK_MAXCOUNT)  return (1);                                             /* Reload value impossible */
+
+  SysTick->LOAD  =  (ticks & SYSTICK_MAXCOUNT) - 1;                                      /* set reload register */
+  NVIC_SetPriority (SysTick_IRQn, (1<<__NVIC_PRIO_BITS) - 1);                            /* set Priority for Cortex-M0 System Interrupts */
+  SysTick->VAL   =  (0x00);                                                              /* Load the SysTick Counter Value */
+  SysTick->CTRL = (1 << SYSTICK_CLKSOURCE) | (1<<SYSTICK_ENABLE) | (1<<SYSTICK_TICKINT); /* Enable SysTick IRQ and SysTick Timer */
+  return (0);                                                                            /* Function successful */
+}
+
+#endif
+
+
+
+
+
+/* ##################################    Reset function  ############################################ */
+
+/**
+ * @brief  Initiate a system reset request.
+ *
+ * @param   none
+ * @return  none
+ *
+ * Initialize a system reset request to reset the MCU
+ */
+static __INLINE void NVIC_SystemReset(void)
+{
+  SCB->AIRCR  = (NVIC_AIRCR_VECTKEY | (SCB->AIRCR & (0x700)) | (1<<NVIC_SYSRESETREQ)); /* Keep priority group unchanged */
+  __DSB();                                                                             /* Ensure completion of memory access */              
+  while(1);                                                                            /* wait until reset */
+}
+
+
+/* ##################################### Debug In/Output function ########################################### */
+
+extern volatile int ITM_RxBuffer;                    /* variable to receive characters                             */
+#define             ITM_RXBUFFER_EMPTY    0x5AA55AA5 /* value identifying ITM_RxBuffer is ready for next character */
+
+
+/**
+ * @brief  Outputs a character via the ITM channel 0
+ *
+ * @param   uint32_t character to output
+ * @return  uint32_t input character
+ *
+ * The function outputs a character via the ITM channel 0. 
+ * The function returns when no debugger is connected that has booked the output.  
+ * It is blocking when a debugger is connected, but the previous character send is not transmitted. 
+ */
+static __INLINE uint32_t ITM_SendChar (uint32_t ch)
+{
+  if ((CoreDebug->DEMCR & CoreDebug_DEMCR_TRCENA)  &&
+      (ITM->TCR & ITM_TCR_ITMENA)                  &&
+      (ITM->TER & (1UL << 0))  ) 
+  {
+    while (ITM->PORT[0].u32 == 0);
+    ITM->PORT[0].u8 = (uint8_t) ch;
+  }  
+  return (ch);
+}
+
+
+/**
+ * @brief  Inputs a character via variable ITM_RxBuffer
+ *
+ * @param   none
+ * @return  uint32_t input character
+ *
+ * The function inputs a character via variable ITM_RxBuffer. 
+ * The function returns when no debugger is connected that has booked the output.  
+ * It is blocking when a debugger is connected, but the previous character send is not transmitted. 
+ */
+static __INLINE int ITM_ReceiveChar (void) {
+  int ch = -1;                               /* no character available */
+
+  if (ITM_RxBuffer != ITM_RXBUFFER_EMPTY) {
+    ch = ITM_RxBuffer;
+    ITM_RxBuffer = ITM_RXBUFFER_EMPTY;       /* ready for next character */
+  }
+  
+  return (ch); 
+}
+
+
+/**
+ * @brief  Check if  a character via variable ITM_RxBuffer is available
+ *
+ * @param   none
+ * @return  int  1 = character available, 0 = no character available
+ *
+ * The function checks  variable ITM_RxBuffer whether a character is available or not. 
+ * The function returns '1' if a character is available and '0' if no character is available. 
+ */
+static __INLINE int ITM_CheckChar (void) {
+
+  if (ITM_RxBuffer == ITM_RXBUFFER_EMPTY) {
+    return (0);                                 /* no character available */
+  } else {
+    return (1);                                 /*    character available */
+  }
+}
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CM3_CORE_H__ */
+
+/*lint -restore */