Home | History | Annotate | Download | only in cmsis
      1 /**************************************************************************//**
      2  * @file     core_sc000.h
      3  * @brief    CMSIS SC000 Core Peripheral Access Layer Header File
      4  * @version  V4.00
      5  * @date     22. August 2014
      6  *
      7  * @note
      8  *
      9  ******************************************************************************/
     10 /* Copyright (c) 2009 - 2014 ARM LIMITED
     11 
     12    All rights reserved.
     13    Redistribution and use in source and binary forms, with or without
     14    modification, are permitted provided that the following conditions are met:
     15    - Redistributions of source code must retain the above copyright
     16      notice, this list of conditions and the following disclaimer.
     17    - Redistributions in binary form must reproduce the above copyright
     18      notice, this list of conditions and the following disclaimer in the
     19      documentation and/or other materials provided with the distribution.
     20    - Neither the name of ARM nor the names of its contributors may be used
     21      to endorse or promote products derived from this software without
     22      specific prior written permission.
     23    *
     24    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     25    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27    ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
     28    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     29    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     30    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     31    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     32    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     33    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     34    POSSIBILITY OF SUCH DAMAGE.
     35    ---------------------------------------------------------------------------*/
     36 
     37 
     38 #if defined ( __ICCARM__ )
     39  #pragma system_include  /* treat file as system include file for MISRA check */
     40 #endif
     41 
     42 #ifndef __CORE_SC000_H_GENERIC
     43 #define __CORE_SC000_H_GENERIC
     44 
     45 #ifdef __cplusplus
     46  extern "C" {
     47 #endif
     48 
     49 /** \page CMSIS_MISRA_Exceptions  MISRA-C:2004 Compliance Exceptions
     50   CMSIS violates the following MISRA-C:2004 rules:
     51 
     52    \li Required Rule 8.5, object/function definition in header file.<br>
     53      Function definitions in header files are used to allow 'inlining'.
     54 
     55    \li Required Rule 18.4, declaration of union type or object of union type: '{...}'.<br>
     56      Unions are used for effective representation of core registers.
     57 
     58    \li Advisory Rule 19.7, Function-like macro defined.<br>
     59      Function-like macros are used to allow more efficient code.
     60  */
     61 
     62 
     63 /*******************************************************************************
     64  *                 CMSIS definitions
     65  ******************************************************************************/
     66 /** \ingroup SC000
     67   @{
     68  */
     69 
     70 /*  CMSIS SC000 definitions */
     71 #define __SC000_CMSIS_VERSION_MAIN  (0x04)                                   /*!< [31:16] CMSIS HAL main version */
     72 #define __SC000_CMSIS_VERSION_SUB   (0x00)                                   /*!< [15:0]  CMSIS HAL sub version  */
     73 #define __SC000_CMSIS_VERSION       ((__SC000_CMSIS_VERSION_MAIN << 16) | \
     74                                       __SC000_CMSIS_VERSION_SUB          )   /*!< CMSIS HAL version number       */
     75 
     76 #define __CORTEX_SC                 (000)                                       /*!< Cortex secure core             */
     77 
     78 
     79 #if   defined ( __CC_ARM )
     80   #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler          */
     81   #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler       */
     82   #define __STATIC_INLINE  static __inline
     83 
     84 #elif defined ( __GNUC__ )
     85   #define __ASM            __asm                                      /*!< asm keyword for GNU Compiler          */
     86   #define __INLINE         inline                                     /*!< inline keyword for GNU Compiler       */
     87   #define __STATIC_INLINE  static inline
     88 
     89 #elif defined ( __ICCARM__ )
     90   #define __ASM            __asm                                      /*!< asm keyword for IAR Compiler          */
     91   #define __INLINE         inline                                     /*!< inline keyword for IAR Compiler. Only available in High optimization mode! */
     92   #define __STATIC_INLINE  static inline
     93 
     94 #elif defined ( __TMS470__ )
     95   #define __ASM            __asm                                      /*!< asm keyword for TI CCS Compiler       */
     96   #define __STATIC_INLINE  static inline
     97 
     98 #elif defined ( __TASKING__ )
     99   #define __ASM            __asm                                      /*!< asm keyword for TASKING Compiler      */
    100   #define __INLINE         inline                                     /*!< inline keyword for TASKING Compiler   */
    101   #define __STATIC_INLINE  static inline
    102 
    103 #elif defined ( __CSMC__ )
    104   #define __packed
    105   #define __ASM            _asm                                      /*!< asm keyword for COSMIC Compiler      */
    106   #define __INLINE         inline                                    /*use -pc99 on compile line !< inline keyword for COSMIC Compiler   */
    107   #define __STATIC_INLINE  static inline
    108 
    109 #endif
    110 
    111 /** __FPU_USED indicates whether an FPU is used or not.
    112     This core does not support an FPU at all
    113 */
    114 #define __FPU_USED       0
    115 
    116 #if defined ( __CC_ARM )
    117   #if defined __TARGET_FPU_VFP
    118     #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
    119   #endif
    120 
    121 #elif defined ( __GNUC__ )
    122   #if defined (__VFP_FP__) && !defined(__SOFTFP__)
    123     #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
    124   #endif
    125 
    126 #elif defined ( __ICCARM__ )
    127   #if defined __ARMVFP__
    128     #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
    129   #endif
    130 
    131 #elif defined ( __TMS470__ )
    132   #if defined __TI__VFP_SUPPORT____
    133     #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
    134   #endif
    135 
    136 #elif defined ( __TASKING__ )
    137   #if defined __FPU_VFP__
    138     #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
    139   #endif
    140 
    141 #elif defined ( __CSMC__ )		/* Cosmic */
    142   #if ( __CSMC__ & 0x400)		// FPU present for parser
    143     #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
    144   #endif
    145 #endif
    146 
    147 #include <stdint.h>                      /* standard types definitions                      */
    148 #include <core_cmInstr.h>                /* Core Instruction Access                         */
    149 #include <core_cmFunc.h>                 /* Core Function Access                            */
    150 
    151 #ifdef __cplusplus
    152 }
    153 #endif
    154 
    155 #endif /* __CORE_SC000_H_GENERIC */
    156 
    157 #ifndef __CMSIS_GENERIC
    158 
    159 #ifndef __CORE_SC000_H_DEPENDANT
    160 #define __CORE_SC000_H_DEPENDANT
    161 
    162 #ifdef __cplusplus
    163  extern "C" {
    164 #endif
    165 
    166 /* check device defines and use defaults */
    167 #if defined __CHECK_DEVICE_DEFINES
    168   #ifndef __SC000_REV
    169     #define __SC000_REV             0x0000
    170     #warning "__SC000_REV not defined in device header file; using default!"
    171   #endif
    172 
    173   #ifndef __MPU_PRESENT
    174     #define __MPU_PRESENT             0
    175     #warning "__MPU_PRESENT not defined in device header file; using default!"
    176   #endif
    177 
    178   #ifndef __NVIC_PRIO_BITS
    179     #define __NVIC_PRIO_BITS          2
    180     #warning "__NVIC_PRIO_BITS not defined in device header file; using default!"
    181   #endif
    182 
    183   #ifndef __Vendor_SysTickConfig
    184     #define __Vendor_SysTickConfig    0
    185     #warning "__Vendor_SysTickConfig not defined in device header file; using default!"
    186   #endif
    187 #endif
    188 
    189 /* IO definitions (access restrictions to peripheral registers) */
    190 /**
    191     \defgroup CMSIS_glob_defs CMSIS Global Defines
    192 
    193     <strong>IO Type Qualifiers</strong> are used
    194     \li to specify the access to peripheral variables.
    195     \li for automatic generation of peripheral register debug information.
    196 */
    197 #ifdef __cplusplus
    198   #define   __I     volatile             /*!< Defines 'read only' permissions                 */
    199 #else
    200   #define   __I     volatile const       /*!< Defines 'read only' permissions                 */
    201 #endif
    202 #define     __O     volatile             /*!< Defines 'write only' permissions                */
    203 #define     __IO    volatile             /*!< Defines 'read / write' permissions              */
    204 
    205 /*@} end of group SC000 */
    206 
    207 
    208 
    209 /*******************************************************************************
    210  *                 Register Abstraction
    211   Core Register contain:
    212   - Core Register
    213   - Core NVIC Register
    214   - Core SCB Register
    215   - Core SysTick Register
    216   - Core MPU Register
    217  ******************************************************************************/
    218 /** \defgroup CMSIS_core_register Defines and Type Definitions
    219     \brief Type definitions and defines for Cortex-M processor based devices.
    220 */
    221 
    222 /** \ingroup    CMSIS_core_register
    223     \defgroup   CMSIS_CORE  Status and Control Registers
    224     \brief  Core Register type definitions.
    225   @{
    226  */
    227 
    228 /** \brief  Union type to access the Application Program Status Register (APSR).
    229  */
    230 typedef union
    231 {
    232   struct
    233   {
    234 #if (__CORTEX_M != 0x04)
    235     uint32_t _reserved0:27;              /*!< bit:  0..26  Reserved                           */
    236 #else
    237     uint32_t _reserved0:16;              /*!< bit:  0..15  Reserved                           */
    238     uint32_t GE:4;                       /*!< bit: 16..19  Greater than or Equal flags        */
    239     uint32_t _reserved1:7;               /*!< bit: 20..26  Reserved                           */
    240 #endif
    241     uint32_t Q:1;                        /*!< bit:     27  Saturation condition flag          */
    242     uint32_t V:1;                        /*!< bit:     28  Overflow condition code flag       */
    243     uint32_t C:1;                        /*!< bit:     29  Carry condition code flag          */
    244     uint32_t Z:1;                        /*!< bit:     30  Zero condition code flag           */
    245     uint32_t N:1;                        /*!< bit:     31  Negative condition code flag       */
    246   } b;                                   /*!< Structure used for bit  access                  */
    247   uint32_t w;                            /*!< Type      used for word access                  */
    248 } APSR_Type;
    249 
    250 
    251 /** \brief  Union type to access the Interrupt Program Status Register (IPSR).
    252  */
    253 typedef union
    254 {
    255   struct
    256   {
    257     uint32_t ISR:9;                      /*!< bit:  0.. 8  Exception number                   */
    258     uint32_t _reserved0:23;              /*!< bit:  9..31  Reserved                           */
    259   } b;                                   /*!< Structure used for bit  access                  */
    260   uint32_t w;                            /*!< Type      used for word access                  */
    261 } IPSR_Type;
    262 
    263 
    264 /** \brief  Union type to access the Special-Purpose Program Status Registers (xPSR).
    265  */
    266 typedef union
    267 {
    268   struct
    269   {
    270     uint32_t ISR:9;                      /*!< bit:  0.. 8  Exception number                   */
    271 #if (__CORTEX_M != 0x04)
    272     uint32_t _reserved0:15;              /*!< bit:  9..23  Reserved                           */
    273 #else
    274     uint32_t _reserved0:7;               /*!< bit:  9..15  Reserved                           */
    275     uint32_t GE:4;                       /*!< bit: 16..19  Greater than or Equal flags        */
    276     uint32_t _reserved1:4;               /*!< bit: 20..23  Reserved                           */
    277 #endif
    278     uint32_t T:1;                        /*!< bit:     24  Thumb bit        (read 0)          */
    279     uint32_t IT:2;                       /*!< bit: 25..26  saved IT state   (read 0)          */
    280     uint32_t Q:1;                        /*!< bit:     27  Saturation condition flag          */
    281     uint32_t V:1;                        /*!< bit:     28  Overflow condition code flag       */
    282     uint32_t C:1;                        /*!< bit:     29  Carry condition code flag          */
    283     uint32_t Z:1;                        /*!< bit:     30  Zero condition code flag           */
    284     uint32_t N:1;                        /*!< bit:     31  Negative condition code flag       */
    285   } b;                                   /*!< Structure used for bit  access                  */
    286   uint32_t w;                            /*!< Type      used for word access                  */
    287 } xPSR_Type;
    288 
    289 
    290 /** \brief  Union type to access the Control Registers (CONTROL).
    291  */
    292 typedef union
    293 {
    294   struct
    295   {
    296     uint32_t nPRIV:1;                    /*!< bit:      0  Execution privilege in Thread mode */
    297     uint32_t SPSEL:1;                    /*!< bit:      1  Stack to be used                   */
    298     uint32_t FPCA:1;                     /*!< bit:      2  FP extension active flag           */
    299     uint32_t _reserved0:29;              /*!< bit:  3..31  Reserved                           */
    300   } b;                                   /*!< Structure used for bit  access                  */
    301   uint32_t w;                            /*!< Type      used for word access                  */
    302 } CONTROL_Type;
    303 
    304 /*@} end of group CMSIS_CORE */
    305 
    306 
    307 /** \ingroup    CMSIS_core_register
    308     \defgroup   CMSIS_NVIC  Nested Vectored Interrupt Controller (NVIC)
    309     \brief      Type definitions for the NVIC Registers
    310   @{
    311  */
    312 
    313 /** \brief  Structure type to access the Nested Vectored Interrupt Controller (NVIC).
    314  */
    315 typedef struct
    316 {
    317   __IO uint32_t ISER[1];                 /*!< Offset: 0x000 (R/W)  Interrupt Set Enable Register           */
    318        uint32_t RESERVED0[31];
    319   __IO uint32_t ICER[1];                 /*!< Offset: 0x080 (R/W)  Interrupt Clear Enable Register          */
    320        uint32_t RSERVED1[31];
    321   __IO uint32_t ISPR[1];                 /*!< Offset: 0x100 (R/W)  Interrupt Set Pending Register           */
    322        uint32_t RESERVED2[31];
    323   __IO uint32_t ICPR[1];                 /*!< Offset: 0x180 (R/W)  Interrupt Clear Pending Register         */
    324        uint32_t RESERVED3[31];
    325        uint32_t RESERVED4[64];
    326   __IO uint32_t IP[8];                   /*!< Offset: 0x300 (R/W)  Interrupt Priority Register              */
    327 }  NVIC_Type;
    328 
    329 /*@} end of group CMSIS_NVIC */
    330 
    331 
    332 /** \ingroup  CMSIS_core_register
    333     \defgroup CMSIS_SCB     System Control Block (SCB)
    334     \brief      Type definitions for the System Control Block Registers
    335   @{
    336  */
    337 
    338 /** \brief  Structure type to access the System Control Block (SCB).
    339  */
    340 typedef struct
    341 {
    342   __I  uint32_t CPUID;                   /*!< Offset: 0x000 (R/ )  CPUID Base Register                                   */
    343   __IO uint32_t ICSR;                    /*!< Offset: 0x004 (R/W)  Interrupt Control and State Register                  */
    344   __IO uint32_t VTOR;                    /*!< Offset: 0x008 (R/W)  Vector Table Offset Register                          */
    345   __IO uint32_t AIRCR;                   /*!< Offset: 0x00C (R/W)  Application Interrupt and Reset Control Register      */
    346   __IO uint32_t SCR;                     /*!< Offset: 0x010 (R/W)  System Control Register                               */
    347   __IO uint32_t CCR;                     /*!< Offset: 0x014 (R/W)  Configuration Control Register                        */
    348        uint32_t RESERVED0[1];
    349   __IO uint32_t SHP[2];                  /*!< Offset: 0x01C (R/W)  System Handlers Priority Registers. [0] is RESERVED   */
    350   __IO uint32_t SHCSR;                   /*!< Offset: 0x024 (R/W)  System Handler Control and State Register             */
    351        uint32_t RESERVED1[154];
    352   __IO uint32_t SFCR;                    /*!< Offset: 0x290 (R/W)  Security Features Register                            */
    353 } SCB_Type;
    354 
    355 /* SCB CPUID Register Definitions */
    356 #define SCB_CPUID_IMPLEMENTER_Pos          24                                             /*!< SCB CPUID: IMPLEMENTER Position */
    357 #define SCB_CPUID_IMPLEMENTER_Msk          (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos)          /*!< SCB CPUID: IMPLEMENTER Mask */
    358 
    359 #define SCB_CPUID_VARIANT_Pos              20                                             /*!< SCB CPUID: VARIANT Position */
    360 #define SCB_CPUID_VARIANT_Msk              (0xFUL << SCB_CPUID_VARIANT_Pos)               /*!< SCB CPUID: VARIANT Mask */
    361 
    362 #define SCB_CPUID_ARCHITECTURE_Pos         16                                             /*!< SCB CPUID: ARCHITECTURE Position */
    363 #define SCB_CPUID_ARCHITECTURE_Msk         (0xFUL << SCB_CPUID_ARCHITECTURE_Pos)          /*!< SCB CPUID: ARCHITECTURE Mask */
    364 
    365 #define SCB_CPUID_PARTNO_Pos                4                                             /*!< SCB CPUID: PARTNO Position */
    366 #define SCB_CPUID_PARTNO_Msk               (0xFFFUL << SCB_CPUID_PARTNO_Pos)              /*!< SCB CPUID: PARTNO Mask */
    367 
    368 #define SCB_CPUID_REVISION_Pos              0                                             /*!< SCB CPUID: REVISION Position */
    369 #define SCB_CPUID_REVISION_Msk             (0xFUL << SCB_CPUID_REVISION_Pos)              /*!< SCB CPUID: REVISION Mask */
    370 
    371 /* SCB Interrupt Control State Register Definitions */
    372 #define SCB_ICSR_NMIPENDSET_Pos            31                                             /*!< SCB ICSR: NMIPENDSET Position */
    373 #define SCB_ICSR_NMIPENDSET_Msk            (1UL << SCB_ICSR_NMIPENDSET_Pos)               /*!< SCB ICSR: NMIPENDSET Mask */
    374 
    375 #define SCB_ICSR_PENDSVSET_Pos             28                                             /*!< SCB ICSR: PENDSVSET Position */
    376 #define SCB_ICSR_PENDSVSET_Msk             (1UL << SCB_ICSR_PENDSVSET_Pos)                /*!< SCB ICSR: PENDSVSET Mask */
    377 
    378 #define SCB_ICSR_PENDSVCLR_Pos             27                                             /*!< SCB ICSR: PENDSVCLR Position */
    379 #define SCB_ICSR_PENDSVCLR_Msk             (1UL << SCB_ICSR_PENDSVCLR_Pos)                /*!< SCB ICSR: PENDSVCLR Mask */
    380 
    381 #define SCB_ICSR_PENDSTSET_Pos             26                                             /*!< SCB ICSR: PENDSTSET Position */
    382 #define SCB_ICSR_PENDSTSET_Msk             (1UL << SCB_ICSR_PENDSTSET_Pos)                /*!< SCB ICSR: PENDSTSET Mask */
    383 
    384 #define SCB_ICSR_PENDSTCLR_Pos             25                                             /*!< SCB ICSR: PENDSTCLR Position */
    385 #define SCB_ICSR_PENDSTCLR_Msk             (1UL << SCB_ICSR_PENDSTCLR_Pos)                /*!< SCB ICSR: PENDSTCLR Mask */
    386 
    387 #define SCB_ICSR_ISRPREEMPT_Pos            23                                             /*!< SCB ICSR: ISRPREEMPT Position */
    388 #define SCB_ICSR_ISRPREEMPT_Msk            (1UL << SCB_ICSR_ISRPREEMPT_Pos)               /*!< SCB ICSR: ISRPREEMPT Mask */
    389 
    390 #define SCB_ICSR_ISRPENDING_Pos            22                                             /*!< SCB ICSR: ISRPENDING Position */
    391 #define SCB_ICSR_ISRPENDING_Msk            (1UL << SCB_ICSR_ISRPENDING_Pos)               /*!< SCB ICSR: ISRPENDING Mask */
    392 
    393 #define SCB_ICSR_VECTPENDING_Pos           12                                             /*!< SCB ICSR: VECTPENDING Position */
    394 #define SCB_ICSR_VECTPENDING_Msk           (0x1FFUL << SCB_ICSR_VECTPENDING_Pos)          /*!< SCB ICSR: VECTPENDING Mask */
    395 
    396 #define SCB_ICSR_VECTACTIVE_Pos             0                                             /*!< SCB ICSR: VECTACTIVE Position */
    397 #define SCB_ICSR_VECTACTIVE_Msk            (0x1FFUL << SCB_ICSR_VECTACTIVE_Pos)           /*!< SCB ICSR: VECTACTIVE Mask */
    398 
    399 /* SCB Interrupt Control State Register Definitions */
    400 #define SCB_VTOR_TBLOFF_Pos                 7                                             /*!< SCB VTOR: TBLOFF Position */
    401 #define SCB_VTOR_TBLOFF_Msk                (0x1FFFFFFUL << SCB_VTOR_TBLOFF_Pos)           /*!< SCB VTOR: TBLOFF Mask */
    402 
    403 /* SCB Application Interrupt and Reset Control Register Definitions */
    404 #define SCB_AIRCR_VECTKEY_Pos              16                                             /*!< SCB AIRCR: VECTKEY Position */
    405 #define SCB_AIRCR_VECTKEY_Msk              (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos)            /*!< SCB AIRCR: VECTKEY Mask */
    406 
    407 #define SCB_AIRCR_VECTKEYSTAT_Pos          16                                             /*!< SCB AIRCR: VECTKEYSTAT Position */
    408 #define SCB_AIRCR_VECTKEYSTAT_Msk          (0xFFFFUL << SCB_AIRCR_VECTKEYSTAT_Pos)        /*!< SCB AIRCR: VECTKEYSTAT Mask */
    409 
    410 #define SCB_AIRCR_ENDIANESS_Pos            15                                             /*!< SCB AIRCR: ENDIANESS Position */
    411 #define SCB_AIRCR_ENDIANESS_Msk            (1UL << SCB_AIRCR_ENDIANESS_Pos)               /*!< SCB AIRCR: ENDIANESS Mask */
    412 
    413 #define SCB_AIRCR_SYSRESETREQ_Pos           2                                             /*!< SCB AIRCR: SYSRESETREQ Position */
    414 #define SCB_AIRCR_SYSRESETREQ_Msk          (1UL << SCB_AIRCR_SYSRESETREQ_Pos)             /*!< SCB AIRCR: SYSRESETREQ Mask */
    415 
    416 #define SCB_AIRCR_VECTCLRACTIVE_Pos         1                                             /*!< SCB AIRCR: VECTCLRACTIVE Position */
    417 #define SCB_AIRCR_VECTCLRACTIVE_Msk        (1UL << SCB_AIRCR_VECTCLRACTIVE_Pos)           /*!< SCB AIRCR: VECTCLRACTIVE Mask */
    418 
    419 /* SCB System Control Register Definitions */
    420 #define SCB_SCR_SEVONPEND_Pos               4                                             /*!< SCB SCR: SEVONPEND Position */
    421 #define SCB_SCR_SEVONPEND_Msk              (1UL << SCB_SCR_SEVONPEND_Pos)                 /*!< SCB SCR: SEVONPEND Mask */
    422 
    423 #define SCB_SCR_SLEEPDEEP_Pos               2                                             /*!< SCB SCR: SLEEPDEEP Position */
    424 #define SCB_SCR_SLEEPDEEP_Msk              (1UL << SCB_SCR_SLEEPDEEP_Pos)                 /*!< SCB SCR: SLEEPDEEP Mask */
    425 
    426 #define SCB_SCR_SLEEPONEXIT_Pos             1                                             /*!< SCB SCR: SLEEPONEXIT Position */
    427 #define SCB_SCR_SLEEPONEXIT_Msk            (1UL << SCB_SCR_SLEEPONEXIT_Pos)               /*!< SCB SCR: SLEEPONEXIT Mask */
    428 
    429 /* SCB Configuration Control Register Definitions */
    430 #define SCB_CCR_STKALIGN_Pos                9                                             /*!< SCB CCR: STKALIGN Position */
    431 #define SCB_CCR_STKALIGN_Msk               (1UL << SCB_CCR_STKALIGN_Pos)                  /*!< SCB CCR: STKALIGN Mask */
    432 
    433 #define SCB_CCR_UNALIGN_TRP_Pos             3                                             /*!< SCB CCR: UNALIGN_TRP Position */
    434 #define SCB_CCR_UNALIGN_TRP_Msk            (1UL << SCB_CCR_UNALIGN_TRP_Pos)               /*!< SCB CCR: UNALIGN_TRP Mask */
    435 
    436 /* SCB System Handler Control and State Register Definitions */
    437 #define SCB_SHCSR_SVCALLPENDED_Pos         15                                             /*!< SCB SHCSR: SVCALLPENDED Position */
    438 #define SCB_SHCSR_SVCALLPENDED_Msk         (1UL << SCB_SHCSR_SVCALLPENDED_Pos)            /*!< SCB SHCSR: SVCALLPENDED Mask */
    439 
    440 /* SCB Security Features Register Definitions */
    441 #define SCB_SFCR_UNIBRTIMING_Pos            0                                             /*!< SCB SFCR: UNIBRTIMING Position */
    442 #define SCB_SFCR_UNIBRTIMING_Msk           (1UL << SCB_SHCSR_SVCALLPENDED_Pos)            /*!< SCB SFCR: UNIBRTIMING Mask */
    443 
    444 #define SCB_SFCR_SECKEY_Pos                16                                             /*!< SCB SFCR: SECKEY Position */
    445 #define SCB_SFCR_SECKEY_Msk               (0xFFFFUL << SCB_SHCSR_SVCALLPENDED_Pos)        /*!< SCB SFCR: SECKEY Mask */
    446 
    447 /*@} end of group CMSIS_SCB */
    448 
    449 
    450 /** \ingroup  CMSIS_core_register
    451     \defgroup CMSIS_SCnSCB System Controls not in SCB (SCnSCB)
    452     \brief      Type definitions for the System Control and ID Register not in the SCB
    453   @{
    454  */
    455 
    456 /** \brief  Structure type to access the System Control and ID Register not in the SCB.
    457  */
    458 typedef struct
    459 {
    460        uint32_t RESERVED0[2];
    461   __IO uint32_t ACTLR;                   /*!< Offset: 0x008 (R/W)  Auxiliary Control Register      */
    462 } SCnSCB_Type;
    463 
    464 /* Auxiliary Control Register Definitions */
    465 #define SCnSCB_ACTLR_DISMCYCINT_Pos         0                                          /*!< ACTLR: DISMCYCINT Position */
    466 #define SCnSCB_ACTLR_DISMCYCINT_Msk        (1UL << SCnSCB_ACTLR_DISMCYCINT_Pos)        /*!< ACTLR: DISMCYCINT Mask */
    467 
    468 /*@} end of group CMSIS_SCnotSCB */
    469 
    470 
    471 /** \ingroup  CMSIS_core_register
    472     \defgroup CMSIS_SysTick     System Tick Timer (SysTick)
    473     \brief      Type definitions for the System Timer Registers.
    474   @{
    475  */
    476 
    477 /** \brief  Structure type to access the System Timer (SysTick).
    478  */
    479 typedef struct
    480 {
    481   __IO uint32_t CTRL;                    /*!< Offset: 0x000 (R/W)  SysTick Control and Status Register */
    482   __IO uint32_t LOAD;                    /*!< Offset: 0x004 (R/W)  SysTick Reload Value Register       */
    483   __IO uint32_t VAL;                     /*!< Offset: 0x008 (R/W)  SysTick Current Value Register      */
    484   __I  uint32_t CALIB;                   /*!< Offset: 0x00C (R/ )  SysTick Calibration Register        */
    485 } SysTick_Type;
    486 
    487 /* SysTick Control / Status Register Definitions */
    488 #define SysTick_CTRL_COUNTFLAG_Pos         16                                             /*!< SysTick CTRL: COUNTFLAG Position */
    489 #define SysTick_CTRL_COUNTFLAG_Msk         (1UL << SysTick_CTRL_COUNTFLAG_Pos)            /*!< SysTick CTRL: COUNTFLAG Mask */
    490 
    491 #define SysTick_CTRL_CLKSOURCE_Pos          2                                             /*!< SysTick CTRL: CLKSOURCE Position */
    492 #define SysTick_CTRL_CLKSOURCE_Msk         (1UL << SysTick_CTRL_CLKSOURCE_Pos)            /*!< SysTick CTRL: CLKSOURCE Mask */
    493 
    494 #define SysTick_CTRL_TICKINT_Pos            1                                             /*!< SysTick CTRL: TICKINT Position */
    495 #define SysTick_CTRL_TICKINT_Msk           (1UL << SysTick_CTRL_TICKINT_Pos)              /*!< SysTick CTRL: TICKINT Mask */
    496 
    497 #define SysTick_CTRL_ENABLE_Pos             0                                             /*!< SysTick CTRL: ENABLE Position */
    498 #define SysTick_CTRL_ENABLE_Msk            (1UL << SysTick_CTRL_ENABLE_Pos)               /*!< SysTick CTRL: ENABLE Mask */
    499 
    500 /* SysTick Reload Register Definitions */
    501 #define SysTick_LOAD_RELOAD_Pos             0                                             /*!< SysTick LOAD: RELOAD Position */
    502 #define SysTick_LOAD_RELOAD_Msk            (0xFFFFFFUL << SysTick_LOAD_RELOAD_Pos)        /*!< SysTick LOAD: RELOAD Mask */
    503 
    504 /* SysTick Current Register Definitions */
    505 #define SysTick_VAL_CURRENT_Pos             0                                             /*!< SysTick VAL: CURRENT Position */
    506 #define SysTick_VAL_CURRENT_Msk            (0xFFFFFFUL << SysTick_VAL_CURRENT_Pos)        /*!< SysTick VAL: CURRENT Mask */
    507 
    508 /* SysTick Calibration Register Definitions */
    509 #define SysTick_CALIB_NOREF_Pos            31                                             /*!< SysTick CALIB: NOREF Position */
    510 #define SysTick_CALIB_NOREF_Msk            (1UL << SysTick_CALIB_NOREF_Pos)               /*!< SysTick CALIB: NOREF Mask */
    511 
    512 #define SysTick_CALIB_SKEW_Pos             30                                             /*!< SysTick CALIB: SKEW Position */
    513 #define SysTick_CALIB_SKEW_Msk             (1UL << SysTick_CALIB_SKEW_Pos)                /*!< SysTick CALIB: SKEW Mask */
    514 
    515 #define SysTick_CALIB_TENMS_Pos             0                                             /*!< SysTick CALIB: TENMS Position */
    516 #define SysTick_CALIB_TENMS_Msk            (0xFFFFFFUL << SysTick_CALIB_TENMS_Pos)        /*!< SysTick CALIB: TENMS Mask */
    517 
    518 /*@} end of group CMSIS_SysTick */
    519 
    520 #if (__MPU_PRESENT == 1)
    521 /** \ingroup  CMSIS_core_register
    522     \defgroup CMSIS_MPU     Memory Protection Unit (MPU)
    523     \brief      Type definitions for the Memory Protection Unit (MPU)
    524   @{
    525  */
    526 
    527 /** \brief  Structure type to access the Memory Protection Unit (MPU).
    528  */
    529 typedef struct
    530 {
    531   __I  uint32_t TYPE;                    /*!< Offset: 0x000 (R/ )  MPU Type Register                              */
    532   __IO uint32_t CTRL;                    /*!< Offset: 0x004 (R/W)  MPU Control Register                           */
    533   __IO uint32_t RNR;                     /*!< Offset: 0x008 (R/W)  MPU Region RNRber Register                     */
    534   __IO uint32_t RBAR;                    /*!< Offset: 0x00C (R/W)  MPU Region Base Address Register               */
    535   __IO uint32_t RASR;                    /*!< Offset: 0x010 (R/W)  MPU Region Attribute and Size Register         */
    536 } MPU_Type;
    537 
    538 /* MPU Type Register */
    539 #define MPU_TYPE_IREGION_Pos               16                                             /*!< MPU TYPE: IREGION Position */
    540 #define MPU_TYPE_IREGION_Msk               (0xFFUL << MPU_TYPE_IREGION_Pos)               /*!< MPU TYPE: IREGION Mask */
    541 
    542 #define MPU_TYPE_DREGION_Pos                8                                             /*!< MPU TYPE: DREGION Position */
    543 #define MPU_TYPE_DREGION_Msk               (0xFFUL << MPU_TYPE_DREGION_Pos)               /*!< MPU TYPE: DREGION Mask */
    544 
    545 #define MPU_TYPE_SEPARATE_Pos               0                                             /*!< MPU TYPE: SEPARATE Position */
    546 #define MPU_TYPE_SEPARATE_Msk              (1UL << MPU_TYPE_SEPARATE_Pos)                 /*!< MPU TYPE: SEPARATE Mask */
    547 
    548 /* MPU Control Register */
    549 #define MPU_CTRL_PRIVDEFENA_Pos             2                                             /*!< MPU CTRL: PRIVDEFENA Position */
    550 #define MPU_CTRL_PRIVDEFENA_Msk            (1UL << MPU_CTRL_PRIVDEFENA_Pos)               /*!< MPU CTRL: PRIVDEFENA Mask */
    551 
    552 #define MPU_CTRL_HFNMIENA_Pos               1                                             /*!< MPU CTRL: HFNMIENA Position */
    553 #define MPU_CTRL_HFNMIENA_Msk              (1UL << MPU_CTRL_HFNMIENA_Pos)                 /*!< MPU CTRL: HFNMIENA Mask */
    554 
    555 #define MPU_CTRL_ENABLE_Pos                 0                                             /*!< MPU CTRL: ENABLE Position */
    556 #define MPU_CTRL_ENABLE_Msk                (1UL << MPU_CTRL_ENABLE_Pos)                   /*!< MPU CTRL: ENABLE Mask */
    557 
    558 /* MPU Region Number Register */
    559 #define MPU_RNR_REGION_Pos                  0                                             /*!< MPU RNR: REGION Position */
    560 #define MPU_RNR_REGION_Msk                 (0xFFUL << MPU_RNR_REGION_Pos)                 /*!< MPU RNR: REGION Mask */
    561 
    562 /* MPU Region Base Address Register */
    563 #define MPU_RBAR_ADDR_Pos                   8                                             /*!< MPU RBAR: ADDR Position */
    564 #define MPU_RBAR_ADDR_Msk                  (0xFFFFFFUL << MPU_RBAR_ADDR_Pos)              /*!< MPU RBAR: ADDR Mask */
    565 
    566 #define MPU_RBAR_VALID_Pos                  4                                             /*!< MPU RBAR: VALID Position */
    567 #define MPU_RBAR_VALID_Msk                 (1UL << MPU_RBAR_VALID_Pos)                    /*!< MPU RBAR: VALID Mask */
    568 
    569 #define MPU_RBAR_REGION_Pos                 0                                             /*!< MPU RBAR: REGION Position */
    570 #define MPU_RBAR_REGION_Msk                (0xFUL << MPU_RBAR_REGION_Pos)                 /*!< MPU RBAR: REGION Mask */
    571 
    572 /* MPU Region Attribute and Size Register */
    573 #define MPU_RASR_ATTRS_Pos                 16                                             /*!< MPU RASR: MPU Region Attribute field Position */
    574 #define MPU_RASR_ATTRS_Msk                 (0xFFFFUL << MPU_RASR_ATTRS_Pos)               /*!< MPU RASR: MPU Region Attribute field Mask */
    575 
    576 #define MPU_RASR_XN_Pos                    28                                             /*!< MPU RASR: ATTRS.XN Position */
    577 #define MPU_RASR_XN_Msk                    (1UL << MPU_RASR_XN_Pos)                       /*!< MPU RASR: ATTRS.XN Mask */
    578 
    579 #define MPU_RASR_AP_Pos                    24                                             /*!< MPU RASR: ATTRS.AP Position */
    580 #define MPU_RASR_AP_Msk                    (0x7UL << MPU_RASR_AP_Pos)                     /*!< MPU RASR: ATTRS.AP Mask */
    581 
    582 #define MPU_RASR_TEX_Pos                   19                                             /*!< MPU RASR: ATTRS.TEX Position */
    583 #define MPU_RASR_TEX_Msk                   (0x7UL << MPU_RASR_TEX_Pos)                    /*!< MPU RASR: ATTRS.TEX Mask */
    584 
    585 #define MPU_RASR_S_Pos                     18                                             /*!< MPU RASR: ATTRS.S Position */
    586 #define MPU_RASR_S_Msk                     (1UL << MPU_RASR_S_Pos)                        /*!< MPU RASR: ATTRS.S Mask */
    587 
    588 #define MPU_RASR_C_Pos                     17                                             /*!< MPU RASR: ATTRS.C Position */
    589 #define MPU_RASR_C_Msk                     (1UL << MPU_RASR_C_Pos)                        /*!< MPU RASR: ATTRS.C Mask */
    590 
    591 #define MPU_RASR_B_Pos                     16                                             /*!< MPU RASR: ATTRS.B Position */
    592 #define MPU_RASR_B_Msk                     (1UL << MPU_RASR_B_Pos)                        /*!< MPU RASR: ATTRS.B Mask */
    593 
    594 #define MPU_RASR_SRD_Pos                    8                                             /*!< MPU RASR: Sub-Region Disable Position */
    595 #define MPU_RASR_SRD_Msk                   (0xFFUL << MPU_RASR_SRD_Pos)                   /*!< MPU RASR: Sub-Region Disable Mask */
    596 
    597 #define MPU_RASR_SIZE_Pos                   1                                             /*!< MPU RASR: Region Size Field Position */
    598 #define MPU_RASR_SIZE_Msk                  (0x1FUL << MPU_RASR_SIZE_Pos)                  /*!< MPU RASR: Region Size Field Mask */
    599 
    600 #define MPU_RASR_ENABLE_Pos                 0                                             /*!< MPU RASR: Region enable bit Position */
    601 #define MPU_RASR_ENABLE_Msk                (1UL << MPU_RASR_ENABLE_Pos)                   /*!< MPU RASR: Region enable bit Disable Mask */
    602 
    603 /*@} end of group CMSIS_MPU */
    604 #endif
    605 
    606 
    607 /** \ingroup  CMSIS_core_register
    608     \defgroup CMSIS_CoreDebug       Core Debug Registers (CoreDebug)
    609     \brief      SC000 Core Debug Registers (DCB registers, SHCSR, and DFSR)
    610                 are only accessible over DAP and not via processor. Therefore
    611                 they are not covered by the Cortex-M0 header file.
    612   @{
    613  */
    614 /*@} end of group CMSIS_CoreDebug */
    615 
    616 
    617 /** \ingroup    CMSIS_core_register
    618     \defgroup   CMSIS_core_base     Core Definitions
    619     \brief      Definitions for base addresses, unions, and structures.
    620   @{
    621  */
    622 
    623 /* Memory mapping of SC000 Hardware */
    624 #define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address */
    625 #define SysTick_BASE        (SCS_BASE +  0x0010UL)                    /*!< SysTick Base Address              */
    626 #define NVIC_BASE           (SCS_BASE +  0x0100UL)                    /*!< NVIC Base Address                 */
    627 #define SCB_BASE            (SCS_BASE +  0x0D00UL)                    /*!< System Control Block Base Address */
    628 
    629 #define SCnSCB              ((SCnSCB_Type    *)     SCS_BASE      )   /*!< System control Register not in SCB */
    630 #define SCB                 ((SCB_Type       *)     SCB_BASE      )   /*!< SCB configuration struct           */
    631 #define SysTick             ((SysTick_Type   *)     SysTick_BASE  )   /*!< SysTick configuration struct       */
    632 #define NVIC                ((NVIC_Type      *)     NVIC_BASE     )   /*!< NVIC configuration struct          */
    633 
    634 #if (__MPU_PRESENT == 1)
    635   #define MPU_BASE          (SCS_BASE +  0x0D90UL)                    /*!< Memory Protection Unit             */
    636   #define MPU               ((MPU_Type       *)     MPU_BASE      )   /*!< Memory Protection Unit             */
    637 #endif
    638 
    639 /*@} */
    640 
    641 
    642 
    643 /*******************************************************************************
    644  *                Hardware Abstraction Layer
    645   Core Function Interface contains:
    646   - Core NVIC Functions
    647   - Core SysTick Functions
    648   - Core Register Access Functions
    649  ******************************************************************************/
    650 /** \defgroup CMSIS_Core_FunctionInterface Functions and Instructions Reference
    651 */
    652 
    653 
    654 
    655 /* ##########################   NVIC functions  #################################### */
    656 /** \ingroup  CMSIS_Core_FunctionInterface
    657     \defgroup CMSIS_Core_NVICFunctions NVIC Functions
    658     \brief      Functions that manage interrupts and exceptions via the NVIC.
    659     @{
    660  */
    661 
    662 /* Interrupt Priorities are WORD accessible only under ARMv6M                   */
    663 /* The following MACROS handle generation of the register offset and byte masks */
    664 #define _BIT_SHIFT(IRQn)         (  (((uint32_t)(IRQn)       )    &  0x03) * 8 )
    665 #define _SHP_IDX(IRQn)           ( ((((uint32_t)(IRQn) & 0x0F)-8) >>    2)     )
    666 #define _IP_IDX(IRQn)            (   ((uint32_t)(IRQn)            >>    2)     )
    667 
    668 
    669 /** \brief  Enable External Interrupt
    670 
    671     The function enables a device-specific interrupt in the NVIC interrupt controller.
    672 
    673     \param [in]      IRQn  External interrupt number. Value cannot be negative.
    674  */
    675 __STATIC_INLINE void NVIC_EnableIRQ(IRQn_Type IRQn)
    676 {
    677   NVIC->ISER[0] = (1 << ((uint32_t)(IRQn) & 0x1F));
    678 }
    679 
    680 
    681 /** \brief  Disable External Interrupt
    682 
    683     The function disables a device-specific interrupt in the NVIC interrupt controller.
    684 
    685     \param [in]      IRQn  External interrupt number. Value cannot be negative.
    686  */
    687 __STATIC_INLINE void NVIC_DisableIRQ(IRQn_Type IRQn)
    688 {
    689   NVIC->ICER[0] = (1 << ((uint32_t)(IRQn) & 0x1F));
    690 }
    691 
    692 
    693 /** \brief  Get Pending Interrupt
    694 
    695     The function reads the pending register in the NVIC and returns the pending bit
    696     for the specified interrupt.
    697 
    698     \param [in]      IRQn  Interrupt number.
    699 
    700     \return             0  Interrupt status is not pending.
    701     \return             1  Interrupt status is pending.
    702  */
    703 __STATIC_INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
    704 {
    705   return((uint32_t) ((NVIC->ISPR[0] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0));
    706 }
    707 
    708 
    709 /** \brief  Set Pending Interrupt
    710 
    711     The function sets the pending bit of an external interrupt.
    712 
    713     \param [in]      IRQn  Interrupt number. Value cannot be negative.
    714  */
    715 __STATIC_INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn)
    716 {
    717   NVIC->ISPR[0] = (1 << ((uint32_t)(IRQn) & 0x1F));
    718 }
    719 
    720 
    721 /** \brief  Clear Pending Interrupt
    722 
    723     The function clears the pending bit of an external interrupt.
    724 
    725     \param [in]      IRQn  External interrupt number. Value cannot be negative.
    726  */
    727 __STATIC_INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
    728 {
    729   NVIC->ICPR[0] = (1 << ((uint32_t)(IRQn) & 0x1F)); /* Clear pending interrupt */
    730 }
    731 
    732 
    733 /** \brief  Set Interrupt Priority
    734 
    735     The function sets the priority of an interrupt.
    736 
    737     \note The priority cannot be set for every core interrupt.
    738 
    739     \param [in]      IRQn  Interrupt number.
    740     \param [in]  priority  Priority to set.
    741  */
    742 __STATIC_INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
    743 {
    744   if(IRQn < 0) {
    745     SCB->SHP[_SHP_IDX(IRQn)] = (SCB->SHP[_SHP_IDX(IRQn)] & ~(0xFF << _BIT_SHIFT(IRQn))) |
    746         (((priority << (8 - __NVIC_PRIO_BITS)) & 0xFF) << _BIT_SHIFT(IRQn)); }
    747   else {
    748     NVIC->IP[_IP_IDX(IRQn)] = (NVIC->IP[_IP_IDX(IRQn)] & ~(0xFF << _BIT_SHIFT(IRQn))) |
    749         (((priority << (8 - __NVIC_PRIO_BITS)) & 0xFF) << _BIT_SHIFT(IRQn)); }
    750 }
    751 
    752 
    753 /** \brief  Get Interrupt Priority
    754 
    755     The function reads the priority of an interrupt. The interrupt
    756     number can be positive to specify an external (device specific)
    757     interrupt, or negative to specify an internal (core) interrupt.
    758 
    759 
    760     \param [in]   IRQn  Interrupt number.
    761     \return             Interrupt Priority. Value is aligned automatically to the implemented
    762                         priority bits of the microcontroller.
    763  */
    764 __STATIC_INLINE uint32_t NVIC_GetPriority(IRQn_Type IRQn)
    765 {
    766 
    767   if(IRQn < 0) {
    768     return((uint32_t)(((SCB->SHP[_SHP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & 0xFF) >> (8 - __NVIC_PRIO_BITS)));  } /* get priority for Cortex-M0 system interrupts */
    769   else {
    770     return((uint32_t)(((NVIC->IP[ _IP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & 0xFF) >> (8 - __NVIC_PRIO_BITS)));  } /* get priority for device specific interrupts  */
    771 }
    772 
    773 
    774 /** \brief  System Reset
    775 
    776     The function initiates a system reset request to reset the MCU.
    777  */
    778 __STATIC_INLINE void NVIC_SystemReset(void)
    779 {
    780   __DSB();                                                     /* Ensure all outstanding memory accesses included
    781                                                                   buffered write are completed before reset */
    782   SCB->AIRCR  = ((0x5FA << SCB_AIRCR_VECTKEY_Pos)      |
    783                  SCB_AIRCR_SYSRESETREQ_Msk);
    784   __DSB();                                                     /* Ensure completion of memory access */
    785   while(1);                                                    /* wait until reset */
    786 }
    787 
    788 /*@} end of CMSIS_Core_NVICFunctions */
    789 
    790 
    791 
    792 /* ##################################    SysTick function  ############################################ */
    793 /** \ingroup  CMSIS_Core_FunctionInterface
    794     \defgroup CMSIS_Core_SysTickFunctions SysTick Functions
    795     \brief      Functions that configure the System.
    796   @{
    797  */
    798 
    799 #if (__Vendor_SysTickConfig == 0)
    800 
    801 /** \brief  System Tick Configuration
    802 
    803     The function initializes the System Timer and its interrupt, and starts the System Tick Timer.
    804     Counter is in free running mode to generate periodic interrupts.
    805 
    806     \param [in]  ticks  Number of ticks between two interrupts.
    807 
    808     \return          0  Function succeeded.
    809     \return          1  Function failed.
    810 
    811     \note     When the variable <b>__Vendor_SysTickConfig</b> is set to 1, then the
    812     function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b>
    813     must contain a vendor-specific implementation of this function.
    814 
    815  */
    816 __STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
    817 {
    818   if ((ticks - 1) > SysTick_LOAD_RELOAD_Msk)  return (1);      /* Reload value impossible */
    819 
    820   SysTick->LOAD  = ticks - 1;                                  /* set reload register */
    821   NVIC_SetPriority (SysTick_IRQn, (1<<__NVIC_PRIO_BITS) - 1);  /* set Priority for Systick Interrupt */
    822   SysTick->VAL   = 0;                                          /* Load the SysTick Counter Value */
    823   SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk |
    824                    SysTick_CTRL_TICKINT_Msk   |
    825                    SysTick_CTRL_ENABLE_Msk;                    /* Enable SysTick IRQ and SysTick Timer */
    826   return (0);                                                  /* Function successful */
    827 }
    828 
    829 #endif
    830 
    831 /*@} end of CMSIS_Core_SysTickFunctions */
    832 
    833 
    834 
    835 
    836 #ifdef __cplusplus
    837 }
    838 #endif
    839 
    840 #endif /* __CORE_SC000_H_DEPENDANT */
    841 
    842 #endif /* __CMSIS_GENERIC */
    843