2 * Copyright (c) 2009-2024 Arm Limited. All rights reserved.
4 * SPDX-License-Identifier: Apache-2.0
6 * Licensed under the Apache License, Version 2.0 (the License); you may
7 * not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
14 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
20 * CMSIS Cortex-M0+ Core Peripheral Access Layer Header File
23 #if defined ( __ICCARM__ )
24 #pragma system_include /* treat file as system include file for MISRA check */
25 #elif defined (__clang__)
26 #pragma clang system_header /* treat file as system include file */
27 #elif defined ( __GNUC__ )
28 #pragma GCC diagnostic ignored "-Wpedantic" /* disable pedantic warning due to unnamed structs/unions */
31 #ifndef __CORE_CM0PLUS_H_GENERIC
32 #define __CORE_CM0PLUS_H_GENERIC
41 \page CMSIS_MISRA_Exceptions MISRA-C:2004 Compliance Exceptions
42 CMSIS violates the following MISRA-C:2004 rules:
44 \li Required Rule 8.5, object/function definition in header file.<br>
45 Function definitions in header files are used to allow 'inlining'.
47 \li Required Rule 18.4, declaration of union type or object of union type: '{...}'.<br>
48 Unions are used for effective representation of core registers.
50 \li Advisory Rule 19.7, Function-like macro defined.<br>
51 Function-like macros are used to allow more efficient code.
55 /*******************************************************************************
57 ******************************************************************************/
63 #include "cmsis_version.h"
65 /* CMSIS CM0+ definitions */
67 #define __CORTEX_M (0U) /*!< Cortex-M Core */
69 /** __FPU_USED indicates whether an FPU is used or not.
70 This core does not support an FPU at all
74 #if defined ( __CC_ARM )
75 #if defined (__TARGET_FPU_VFP)
76 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
79 #elif defined (__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
80 #if defined (__ARM_FP)
81 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
84 #elif defined (__ti__)
85 #if defined (__ARM_FP)
86 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
89 #elif defined ( __GNUC__ )
90 #if defined (__VFP_FP__) && !defined(__SOFTFP__)
91 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
94 #elif defined ( __ICCARM__ )
95 #if defined (__ARMVFP__)
96 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
99 #elif defined ( __TI_ARM__ )
100 #if defined (__TI_VFP_SUPPORT__)
101 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
104 #elif defined ( __TASKING__ )
105 #if defined (__FPU_VFP__)
106 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
109 #elif defined ( __CSMC__ )
110 #if ( __CSMC__ & 0x400U)
111 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
116 #include "cmsis_compiler.h" /* CMSIS compiler specific defines */
123 #endif /* __CORE_CM0PLUS_H_GENERIC */
125 #ifndef __CMSIS_GENERIC
127 #ifndef __CORE_CM0PLUS_H_DEPENDANT
128 #define __CORE_CM0PLUS_H_DEPENDANT
134 /* check device defines and use defaults */
135 #if defined __CHECK_DEVICE_DEFINES
136 #ifndef __CM0PLUS_REV
137 #define __CM0PLUS_REV 0x0000U
138 #warning "__CM0PLUS_REV not defined in device header file; using default!"
141 #ifndef __MPU_PRESENT
142 #define __MPU_PRESENT 0U
143 #warning "__MPU_PRESENT not defined in device header file; using default!"
146 #ifndef __VTOR_PRESENT
147 #define __VTOR_PRESENT 0U
148 #warning "__VTOR_PRESENT not defined in device header file; using default!"
151 #ifndef __NVIC_PRIO_BITS
152 #define __NVIC_PRIO_BITS 2U
153 #warning "__NVIC_PRIO_BITS not defined in device header file; using default!"
156 #ifndef __Vendor_SysTickConfig
157 #define __Vendor_SysTickConfig 0U
158 #warning "__Vendor_SysTickConfig not defined in device header file; using default!"
162 /* IO definitions (access restrictions to peripheral registers) */
164 \defgroup CMSIS_glob_defs CMSIS Global Defines
166 <strong>IO Type Qualifiers</strong> are used
167 \li to specify the access to peripheral variables.
168 \li for automatic generation of peripheral register debug information.
171 #define __I volatile /*!< Defines 'read only' permissions */
173 #define __I volatile const /*!< Defines 'read only' permissions */
175 #define __O volatile /*!< Defines 'write only' permissions */
176 #define __IO volatile /*!< Defines 'read / write' permissions */
178 /* following defines should be used for structure members */
179 #define __IM volatile const /*! Defines 'read only' structure member permissions */
180 #define __OM volatile /*! Defines 'write only' structure member permissions */
181 #define __IOM volatile /*! Defines 'read / write' structure member permissions */
183 /*@} end of group Cortex-M0+ */
187 /*******************************************************************************
188 * Register Abstraction
189 Core Register contain:
193 - Core SysTick Register
195 ******************************************************************************/
197 \defgroup CMSIS_core_register Defines and Type Definitions
198 \brief Type definitions and defines for Cortex-M processor based devices.
202 \ingroup CMSIS_core_register
203 \defgroup CMSIS_CORE Status and Control Registers
204 \brief Core Register type definitions.
209 \brief Union type to access the Application Program Status Register (APSR).
215 uint32_t _reserved0:28; /*!< bit: 0..27 Reserved */
216 uint32_t V:1; /*!< bit: 28 Overflow condition code flag */
217 uint32_t C:1; /*!< bit: 29 Carry condition code flag */
218 uint32_t Z:1; /*!< bit: 30 Zero condition code flag */
219 uint32_t N:1; /*!< bit: 31 Negative condition code flag */
220 } b; /*!< Structure used for bit access */
221 uint32_t w; /*!< Type used for word access */
224 /** \brief APSR Register Definitions */
225 #define APSR_N_Pos 31U /*!< APSR: N Position */
226 #define APSR_N_Msk (1UL << APSR_N_Pos) /*!< APSR: N Mask */
228 #define APSR_Z_Pos 30U /*!< APSR: Z Position */
229 #define APSR_Z_Msk (1UL << APSR_Z_Pos) /*!< APSR: Z Mask */
231 #define APSR_C_Pos 29U /*!< APSR: C Position */
232 #define APSR_C_Msk (1UL << APSR_C_Pos) /*!< APSR: C Mask */
234 #define APSR_V_Pos 28U /*!< APSR: V Position */
235 #define APSR_V_Msk (1UL << APSR_V_Pos) /*!< APSR: V Mask */
239 \brief Union type to access the Interrupt Program Status Register (IPSR).
245 uint32_t ISR:9; /*!< bit: 0.. 8 Exception number */
246 uint32_t _reserved0:23; /*!< bit: 9..31 Reserved */
247 } b; /*!< Structure used for bit access */
248 uint32_t w; /*!< Type used for word access */
251 /** \brief IPSR Register Definitions */
252 #define IPSR_ISR_Pos 0U /*!< IPSR: ISR Position */
253 #define IPSR_ISR_Msk (0x1FFUL /*<< IPSR_ISR_Pos*/) /*!< IPSR: ISR Mask */
257 \brief Union type to access the Special-Purpose Program Status Registers (xPSR).
263 uint32_t ISR:9; /*!< bit: 0.. 8 Exception number */
264 uint32_t _reserved0:15; /*!< bit: 9..23 Reserved */
265 uint32_t T:1; /*!< bit: 24 Thumb bit (read 0) */
266 uint32_t _reserved1:3; /*!< bit: 25..27 Reserved */
267 uint32_t V:1; /*!< bit: 28 Overflow condition code flag */
268 uint32_t C:1; /*!< bit: 29 Carry condition code flag */
269 uint32_t Z:1; /*!< bit: 30 Zero condition code flag */
270 uint32_t N:1; /*!< bit: 31 Negative condition code flag */
271 } b; /*!< Structure used for bit access */
272 uint32_t w; /*!< Type used for word access */
275 /** \brief xPSR Register Definitions */
276 #define xPSR_N_Pos 31U /*!< xPSR: N Position */
277 #define xPSR_N_Msk (1UL << xPSR_N_Pos) /*!< xPSR: N Mask */
279 #define xPSR_Z_Pos 30U /*!< xPSR: Z Position */
280 #define xPSR_Z_Msk (1UL << xPSR_Z_Pos) /*!< xPSR: Z Mask */
282 #define xPSR_C_Pos 29U /*!< xPSR: C Position */
283 #define xPSR_C_Msk (1UL << xPSR_C_Pos) /*!< xPSR: C Mask */
285 #define xPSR_V_Pos 28U /*!< xPSR: V Position */
286 #define xPSR_V_Msk (1UL << xPSR_V_Pos) /*!< xPSR: V Mask */
288 #define xPSR_T_Pos 24U /*!< xPSR: T Position */
289 #define xPSR_T_Msk (1UL << xPSR_T_Pos) /*!< xPSR: T Mask */
291 #define xPSR_ISR_Pos 0U /*!< xPSR: ISR Position */
292 #define xPSR_ISR_Msk (0x1FFUL /*<< xPSR_ISR_Pos*/) /*!< xPSR: ISR Mask */
296 \brief Union type to access the Control Registers (CONTROL).
302 uint32_t nPRIV:1; /*!< bit: 0 Execution privilege in Thread mode */
303 uint32_t SPSEL:1; /*!< bit: 1 Stack to be used */
304 uint32_t _reserved1:30; /*!< bit: 2..31 Reserved */
305 } b; /*!< Structure used for bit access */
306 uint32_t w; /*!< Type used for word access */
309 /** \brief CONTROL Register Definitions */
310 #define CONTROL_SPSEL_Pos 1U /*!< CONTROL: SPSEL Position */
311 #define CONTROL_SPSEL_Msk (1UL << CONTROL_SPSEL_Pos) /*!< CONTROL: SPSEL Mask */
313 #define CONTROL_nPRIV_Pos 0U /*!< CONTROL: nPRIV Position */
314 #define CONTROL_nPRIV_Msk (1UL /*<< CONTROL_nPRIV_Pos*/) /*!< CONTROL: nPRIV Mask */
316 /*@} end of group CMSIS_CORE */
320 \ingroup CMSIS_core_register
321 \defgroup CMSIS_NVIC Nested Vectored Interrupt Controller (NVIC)
322 \brief Type definitions for the NVIC Registers
327 \brief Structure type to access the Nested Vectored Interrupt Controller (NVIC).
331 __IOM uint32_t ISER[1U]; /*!< Offset: 0x000 (R/W) Interrupt Set Enable Register */
332 uint32_t RESERVED0[31U];
333 __IOM uint32_t ICER[1U]; /*!< Offset: 0x080 (R/W) Interrupt Clear Enable Register */
334 uint32_t RESERVED1[31U];
335 __IOM uint32_t ISPR[1U]; /*!< Offset: 0x100 (R/W) Interrupt Set Pending Register */
336 uint32_t RESERVED2[31U];
337 __IOM uint32_t ICPR[1U]; /*!< Offset: 0x180 (R/W) Interrupt Clear Pending Register */
338 uint32_t RESERVED3[31U];
339 uint32_t RESERVED4[64U];
340 __IOM uint32_t IPR[8U]; /*!< Offset: 0x300 (R/W) Interrupt Priority Register */
343 /*@} end of group CMSIS_NVIC */
347 \ingroup CMSIS_core_register
348 \defgroup CMSIS_SCB System Control Block (SCB)
349 \brief Type definitions for the System Control Block Registers
354 \brief Structure type to access the System Control Block (SCB).
358 __IM uint32_t CPUID; /*!< Offset: 0x000 (R/ ) CPUID Base Register */
359 __IOM uint32_t ICSR; /*!< Offset: 0x004 (R/W) Interrupt Control and State Register */
360 #if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
361 __IOM uint32_t VTOR; /*!< Offset: 0x008 (R/W) Vector Table Offset Register */
365 __IOM uint32_t AIRCR; /*!< Offset: 0x00C (R/W) Application Interrupt and Reset Control Register */
366 __IOM uint32_t SCR; /*!< Offset: 0x010 (R/W) System Control Register */
367 __IOM uint32_t CCR; /*!< Offset: 0x014 (R/W) Configuration Control Register */
369 __IOM uint32_t SHPR[2U]; /*!< Offset: 0x01C (R/W) System Handlers Priority Registers. [0] is RESERVED */
370 __IOM uint32_t SHCSR; /*!< Offset: 0x024 (R/W) System Handler Control and State Register */
373 /** \brief SCB CPUID Register Definitions */
374 #define SCB_CPUID_IMPLEMENTER_Pos 24U /*!< SCB CPUID: IMPLEMENTER Position */
375 #define SCB_CPUID_IMPLEMENTER_Msk (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos) /*!< SCB CPUID: IMPLEMENTER Mask */
377 #define SCB_CPUID_VARIANT_Pos 20U /*!< SCB CPUID: VARIANT Position */
378 #define SCB_CPUID_VARIANT_Msk (0xFUL << SCB_CPUID_VARIANT_Pos) /*!< SCB CPUID: VARIANT Mask */
380 #define SCB_CPUID_ARCHITECTURE_Pos 16U /*!< SCB CPUID: ARCHITECTURE Position */
381 #define SCB_CPUID_ARCHITECTURE_Msk (0xFUL << SCB_CPUID_ARCHITECTURE_Pos) /*!< SCB CPUID: ARCHITECTURE Mask */
383 #define SCB_CPUID_PARTNO_Pos 4U /*!< SCB CPUID: PARTNO Position */
384 #define SCB_CPUID_PARTNO_Msk (0xFFFUL << SCB_CPUID_PARTNO_Pos) /*!< SCB CPUID: PARTNO Mask */
386 #define SCB_CPUID_REVISION_Pos 0U /*!< SCB CPUID: REVISION Position */
387 #define SCB_CPUID_REVISION_Msk (0xFUL /*<< SCB_CPUID_REVISION_Pos*/) /*!< SCB CPUID: REVISION Mask */
389 /** \brief SCB Interrupt Control State Register Definitions */
390 #define SCB_ICSR_NMIPENDSET_Pos 31U /*!< SCB ICSR: NMIPENDSET Position */
391 #define SCB_ICSR_NMIPENDSET_Msk (1UL << SCB_ICSR_NMIPENDSET_Pos) /*!< SCB ICSR: NMIPENDSET Mask */
393 #define SCB_ICSR_PENDSVSET_Pos 28U /*!< SCB ICSR: PENDSVSET Position */
394 #define SCB_ICSR_PENDSVSET_Msk (1UL << SCB_ICSR_PENDSVSET_Pos) /*!< SCB ICSR: PENDSVSET Mask */
396 #define SCB_ICSR_PENDSVCLR_Pos 27U /*!< SCB ICSR: PENDSVCLR Position */
397 #define SCB_ICSR_PENDSVCLR_Msk (1UL << SCB_ICSR_PENDSVCLR_Pos) /*!< SCB ICSR: PENDSVCLR Mask */
399 #define SCB_ICSR_PENDSTSET_Pos 26U /*!< SCB ICSR: PENDSTSET Position */
400 #define SCB_ICSR_PENDSTSET_Msk (1UL << SCB_ICSR_PENDSTSET_Pos) /*!< SCB ICSR: PENDSTSET Mask */
402 #define SCB_ICSR_PENDSTCLR_Pos 25U /*!< SCB ICSR: PENDSTCLR Position */
403 #define SCB_ICSR_PENDSTCLR_Msk (1UL << SCB_ICSR_PENDSTCLR_Pos) /*!< SCB ICSR: PENDSTCLR Mask */
405 #define SCB_ICSR_ISRPREEMPT_Pos 23U /*!< SCB ICSR: ISRPREEMPT Position */
406 #define SCB_ICSR_ISRPREEMPT_Msk (1UL << SCB_ICSR_ISRPREEMPT_Pos) /*!< SCB ICSR: ISRPREEMPT Mask */
408 #define SCB_ICSR_ISRPENDING_Pos 22U /*!< SCB ICSR: ISRPENDING Position */
409 #define SCB_ICSR_ISRPENDING_Msk (1UL << SCB_ICSR_ISRPENDING_Pos) /*!< SCB ICSR: ISRPENDING Mask */
411 #define SCB_ICSR_VECTPENDING_Pos 12U /*!< SCB ICSR: VECTPENDING Position */
412 #define SCB_ICSR_VECTPENDING_Msk (0x1FFUL << SCB_ICSR_VECTPENDING_Pos) /*!< SCB ICSR: VECTPENDING Mask */
414 #define SCB_ICSR_VECTACTIVE_Pos 0U /*!< SCB ICSR: VECTACTIVE Position */
415 #define SCB_ICSR_VECTACTIVE_Msk (0x1FFUL /*<< SCB_ICSR_VECTACTIVE_Pos*/) /*!< SCB ICSR: VECTACTIVE Mask */
417 #if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
418 /** \brief SCB Vector Table Offset Register Definitions */
419 #define SCB_VTOR_TBLOFF_Pos 8U /*!< SCB VTOR: TBLOFF Position */
420 #define SCB_VTOR_TBLOFF_Msk (0xFFFFFFUL << SCB_VTOR_TBLOFF_Pos) /*!< SCB VTOR: TBLOFF Mask */
423 /** \brief SCB Application Interrupt and Reset Control Register Definitions */
424 #define SCB_AIRCR_VECTKEY_Pos 16U /*!< SCB AIRCR: VECTKEY Position */
425 #define SCB_AIRCR_VECTKEY_Msk (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos) /*!< SCB AIRCR: VECTKEY Mask */
427 #define SCB_AIRCR_VECTKEYSTAT_Pos 16U /*!< SCB AIRCR: VECTKEYSTAT Position */
428 #define SCB_AIRCR_VECTKEYSTAT_Msk (0xFFFFUL << SCB_AIRCR_VECTKEYSTAT_Pos) /*!< SCB AIRCR: VECTKEYSTAT Mask */
430 #define SCB_AIRCR_ENDIANNESS_Pos 15U /*!< SCB AIRCR: ENDIANNESS Position */
431 #define SCB_AIRCR_ENDIANNESS_Msk (1UL << SCB_AIRCR_ENDIANNESS_Pos) /*!< SCB AIRCR: ENDIANNESS Mask */
433 #define SCB_AIRCR_SYSRESETREQ_Pos 2U /*!< SCB AIRCR: SYSRESETREQ Position */
434 #define SCB_AIRCR_SYSRESETREQ_Msk (1UL << SCB_AIRCR_SYSRESETREQ_Pos) /*!< SCB AIRCR: SYSRESETREQ Mask */
436 #define SCB_AIRCR_VECTCLRACTIVE_Pos 1U /*!< SCB AIRCR: VECTCLRACTIVE Position */
437 #define SCB_AIRCR_VECTCLRACTIVE_Msk (1UL << SCB_AIRCR_VECTCLRACTIVE_Pos) /*!< SCB AIRCR: VECTCLRACTIVE Mask */
439 /** \brief SCB System Control Register Definitions */
440 #define SCB_SCR_SEVONPEND_Pos 4U /*!< SCB SCR: SEVONPEND Position */
441 #define SCB_SCR_SEVONPEND_Msk (1UL << SCB_SCR_SEVONPEND_Pos) /*!< SCB SCR: SEVONPEND Mask */
443 #define SCB_SCR_SLEEPDEEP_Pos 2U /*!< SCB SCR: SLEEPDEEP Position */
444 #define SCB_SCR_SLEEPDEEP_Msk (1UL << SCB_SCR_SLEEPDEEP_Pos) /*!< SCB SCR: SLEEPDEEP Mask */
446 #define SCB_SCR_SLEEPONEXIT_Pos 1U /*!< SCB SCR: SLEEPONEXIT Position */
447 #define SCB_SCR_SLEEPONEXIT_Msk (1UL << SCB_SCR_SLEEPONEXIT_Pos) /*!< SCB SCR: SLEEPONEXIT Mask */
449 /** \brief SCB Configuration Control Register Definitions */
450 #define SCB_CCR_STKALIGN_Pos 9U /*!< SCB CCR: STKALIGN Position */
451 #define SCB_CCR_STKALIGN_Msk (1UL << SCB_CCR_STKALIGN_Pos) /*!< SCB CCR: STKALIGN Mask */
453 #define SCB_CCR_UNALIGN_TRP_Pos 3U /*!< SCB CCR: UNALIGN_TRP Position */
454 #define SCB_CCR_UNALIGN_TRP_Msk (1UL << SCB_CCR_UNALIGN_TRP_Pos) /*!< SCB CCR: UNALIGN_TRP Mask */
456 /** \brief SCB System Handler Control and State Register Definitions */
457 #define SCB_SHCSR_SVCALLPENDED_Pos 15U /*!< SCB SHCSR: SVCALLPENDED Position */
458 #define SCB_SHCSR_SVCALLPENDED_Msk (1UL << SCB_SHCSR_SVCALLPENDED_Pos) /*!< SCB SHCSR: SVCALLPENDED Mask */
460 /*@} end of group CMSIS_SCB */
464 \ingroup CMSIS_core_register
465 \defgroup CMSIS_SysTick System Tick Timer (SysTick)
466 \brief Type definitions for the System Timer Registers.
471 \brief Structure type to access the System Timer (SysTick).
475 __IOM uint32_t CTRL; /*!< Offset: 0x000 (R/W) SysTick Control and Status Register */
476 __IOM uint32_t LOAD; /*!< Offset: 0x004 (R/W) SysTick Reload Value Register */
477 __IOM uint32_t VAL; /*!< Offset: 0x008 (R/W) SysTick Current Value Register */
478 __IM uint32_t CALIB; /*!< Offset: 0x00C (R/ ) SysTick Calibration Register */
481 /** \brief SysTick Control / Status Register Definitions */
482 #define SysTick_CTRL_COUNTFLAG_Pos 16U /*!< SysTick CTRL: COUNTFLAG Position */
483 #define SysTick_CTRL_COUNTFLAG_Msk (1UL << SysTick_CTRL_COUNTFLAG_Pos) /*!< SysTick CTRL: COUNTFLAG Mask */
485 #define SysTick_CTRL_CLKSOURCE_Pos 2U /*!< SysTick CTRL: CLKSOURCE Position */
486 #define SysTick_CTRL_CLKSOURCE_Msk (1UL << SysTick_CTRL_CLKSOURCE_Pos) /*!< SysTick CTRL: CLKSOURCE Mask */
488 #define SysTick_CTRL_TICKINT_Pos 1U /*!< SysTick CTRL: TICKINT Position */
489 #define SysTick_CTRL_TICKINT_Msk (1UL << SysTick_CTRL_TICKINT_Pos) /*!< SysTick CTRL: TICKINT Mask */
491 #define SysTick_CTRL_ENABLE_Pos 0U /*!< SysTick CTRL: ENABLE Position */
492 #define SysTick_CTRL_ENABLE_Msk (1UL /*<< SysTick_CTRL_ENABLE_Pos*/) /*!< SysTick CTRL: ENABLE Mask */
494 /** \brief SysTick Reload Register Definitions */
495 #define SysTick_LOAD_RELOAD_Pos 0U /*!< SysTick LOAD: RELOAD Position */
496 #define SysTick_LOAD_RELOAD_Msk (0xFFFFFFUL /*<< SysTick_LOAD_RELOAD_Pos*/) /*!< SysTick LOAD: RELOAD Mask */
498 /** \brief SysTick Current Register Definitions */
499 #define SysTick_VAL_CURRENT_Pos 0U /*!< SysTick VAL: CURRENT Position */
500 #define SysTick_VAL_CURRENT_Msk (0xFFFFFFUL /*<< SysTick_VAL_CURRENT_Pos*/) /*!< SysTick VAL: CURRENT Mask */
502 /** \brief SysTick Calibration Register Definitions */
503 #define SysTick_CALIB_NOREF_Pos 31U /*!< SysTick CALIB: NOREF Position */
504 #define SysTick_CALIB_NOREF_Msk (1UL << SysTick_CALIB_NOREF_Pos) /*!< SysTick CALIB: NOREF Mask */
506 #define SysTick_CALIB_SKEW_Pos 30U /*!< SysTick CALIB: SKEW Position */
507 #define SysTick_CALIB_SKEW_Msk (1UL << SysTick_CALIB_SKEW_Pos) /*!< SysTick CALIB: SKEW Mask */
509 #define SysTick_CALIB_TENMS_Pos 0U /*!< SysTick CALIB: TENMS Position */
510 #define SysTick_CALIB_TENMS_Msk (0xFFFFFFUL /*<< SysTick_CALIB_TENMS_Pos*/) /*!< SysTick CALIB: TENMS Mask */
512 /*@} end of group CMSIS_SysTick */
514 #if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1U)
516 \ingroup CMSIS_core_register
517 \defgroup CMSIS_MPU Memory Protection Unit (MPU)
518 \brief Type definitions for the Memory Protection Unit (MPU)
523 \brief Structure type to access the Memory Protection Unit (MPU).
527 __IM uint32_t TYPE; /*!< Offset: 0x000 (R/ ) MPU Type Register */
528 __IOM uint32_t CTRL; /*!< Offset: 0x004 (R/W) MPU Control Register */
529 __IOM uint32_t RNR; /*!< Offset: 0x008 (R/W) MPU Region Number Register */
530 __IOM uint32_t RBAR; /*!< Offset: 0x00C (R/W) MPU Region Base Address Register */
531 __IOM uint32_t RASR; /*!< Offset: 0x010 (R/W) MPU Region Attribute and Size Register */
534 #define MPU_TYPE_RALIASES 1U
536 /** \brief MPU Type Register Definitions */
537 #define MPU_TYPE_IREGION_Pos 16U /*!< MPU TYPE: IREGION Position */
538 #define MPU_TYPE_IREGION_Msk (0xFFUL << MPU_TYPE_IREGION_Pos) /*!< MPU TYPE: IREGION Mask */
540 #define MPU_TYPE_DREGION_Pos 8U /*!< MPU TYPE: DREGION Position */
541 #define MPU_TYPE_DREGION_Msk (0xFFUL << MPU_TYPE_DREGION_Pos) /*!< MPU TYPE: DREGION Mask */
543 #define MPU_TYPE_SEPARATE_Pos 0U /*!< MPU TYPE: SEPARATE Position */
544 #define MPU_TYPE_SEPARATE_Msk (1UL /*<< MPU_TYPE_SEPARATE_Pos*/) /*!< MPU TYPE: SEPARATE Mask */
546 /** \brief MPU Control Register Definitions */
547 #define MPU_CTRL_PRIVDEFENA_Pos 2U /*!< MPU CTRL: PRIVDEFENA Position */
548 #define MPU_CTRL_PRIVDEFENA_Msk (1UL << MPU_CTRL_PRIVDEFENA_Pos) /*!< MPU CTRL: PRIVDEFENA Mask */
550 #define MPU_CTRL_HFNMIENA_Pos 1U /*!< MPU CTRL: HFNMIENA Position */
551 #define MPU_CTRL_HFNMIENA_Msk (1UL << MPU_CTRL_HFNMIENA_Pos) /*!< MPU CTRL: HFNMIENA Mask */
553 #define MPU_CTRL_ENABLE_Pos 0U /*!< MPU CTRL: ENABLE Position */
554 #define MPU_CTRL_ENABLE_Msk (1UL /*<< MPU_CTRL_ENABLE_Pos*/) /*!< MPU CTRL: ENABLE Mask */
556 /** \brief MPU Region Number Register Definitions */
557 #define MPU_RNR_REGION_Pos 0U /*!< MPU RNR: REGION Position */
558 #define MPU_RNR_REGION_Msk (0xFFUL /*<< MPU_RNR_REGION_Pos*/) /*!< MPU RNR: REGION Mask */
560 /** \brief MPU Region Base Address Register Definitions */
561 #define MPU_RBAR_ADDR_Pos 8U /*!< MPU RBAR: ADDR Position */
562 #define MPU_RBAR_ADDR_Msk (0xFFFFFFUL << MPU_RBAR_ADDR_Pos) /*!< MPU RBAR: ADDR Mask */
564 #define MPU_RBAR_VALID_Pos 4U /*!< MPU RBAR: VALID Position */
565 #define MPU_RBAR_VALID_Msk (1UL << MPU_RBAR_VALID_Pos) /*!< MPU RBAR: VALID Mask */
567 #define MPU_RBAR_REGION_Pos 0U /*!< MPU RBAR: REGION Position */
568 #define MPU_RBAR_REGION_Msk (0xFUL /*<< MPU_RBAR_REGION_Pos*/) /*!< MPU RBAR: REGION Mask */
570 /** \brief MPU Region Attribute and Size Register Definitions */
571 #define MPU_RASR_ATTRS_Pos 16U /*!< MPU RASR: MPU Region Attribute field Position */
572 #define MPU_RASR_ATTRS_Msk (0xFFFFUL << MPU_RASR_ATTRS_Pos) /*!< MPU RASR: MPU Region Attribute field Mask */
574 #define MPU_RASR_XN_Pos 28U /*!< MPU RASR: ATTRS.XN Position */
575 #define MPU_RASR_XN_Msk (1UL << MPU_RASR_XN_Pos) /*!< MPU RASR: ATTRS.XN Mask */
577 #define MPU_RASR_AP_Pos 24U /*!< MPU RASR: ATTRS.AP Position */
578 #define MPU_RASR_AP_Msk (0x7UL << MPU_RASR_AP_Pos) /*!< MPU RASR: ATTRS.AP Mask */
580 #define MPU_RASR_TEX_Pos 19U /*!< MPU RASR: ATTRS.TEX Position */
581 #define MPU_RASR_TEX_Msk (0x7UL << MPU_RASR_TEX_Pos) /*!< MPU RASR: ATTRS.TEX Mask */
583 #define MPU_RASR_S_Pos 18U /*!< MPU RASR: ATTRS.S Position */
584 #define MPU_RASR_S_Msk (1UL << MPU_RASR_S_Pos) /*!< MPU RASR: ATTRS.S Mask */
586 #define MPU_RASR_C_Pos 17U /*!< MPU RASR: ATTRS.C Position */
587 #define MPU_RASR_C_Msk (1UL << MPU_RASR_C_Pos) /*!< MPU RASR: ATTRS.C Mask */
589 #define MPU_RASR_B_Pos 16U /*!< MPU RASR: ATTRS.B Position */
590 #define MPU_RASR_B_Msk (1UL << MPU_RASR_B_Pos) /*!< MPU RASR: ATTRS.B Mask */
592 #define MPU_RASR_SRD_Pos 8U /*!< MPU RASR: Sub-Region Disable Position */
593 #define MPU_RASR_SRD_Msk (0xFFUL << MPU_RASR_SRD_Pos) /*!< MPU RASR: Sub-Region Disable Mask */
595 #define MPU_RASR_SIZE_Pos 1U /*!< MPU RASR: Region Size Field Position */
596 #define MPU_RASR_SIZE_Msk (0x1FUL << MPU_RASR_SIZE_Pos) /*!< MPU RASR: Region Size Field Mask */
598 #define MPU_RASR_ENABLE_Pos 0U /*!< MPU RASR: Region enable bit Position */
599 #define MPU_RASR_ENABLE_Msk (1UL /*<< MPU_RASR_ENABLE_Pos*/) /*!< MPU RASR: Region enable bit Disable Mask */
601 /*@} end of group CMSIS_MPU */
606 \ingroup CMSIS_core_register
607 \defgroup CMSIS_CoreDebug Core Debug Registers (CoreDebug)
608 \brief Cortex-M0+ Core Debug Registers (DCB registers, SHCSR, and DFSR) are only accessible over DAP and not via processor.
609 Therefore they are not covered by the Cortex-M0+ header file.
612 /*@} end of group CMSIS_CoreDebug */
616 \ingroup CMSIS_core_register
617 \defgroup CMSIS_core_bitfield Core register bit field macros
618 \brief Macros for use with bit field definitions (xxx_Pos, xxx_Msk).
623 \brief Mask and shift a bit field value for use in a register bit range.
624 \param[in] field Name of the register bit field.
625 \param[in] value Value of the bit field. This parameter is interpreted as an uint32_t type.
626 \return Masked and shifted value.
628 #define _VAL2FLD(field, value) (((uint32_t)(value) << field ## _Pos) & field ## _Msk)
631 \brief Mask and shift a register value to extract a bit field value.
632 \param[in] field Name of the register bit field.
633 \param[in] value Value of register. This parameter is interpreted as an uint32_t type.
634 \return Masked and shifted bit field value.
636 #define _FLD2VAL(field, value) (((uint32_t)(value) & field ## _Msk) >> field ## _Pos)
638 /*@} end of group CMSIS_core_bitfield */
642 \ingroup CMSIS_core_register
643 \defgroup CMSIS_core_base Core Definitions
644 \brief Definitions for base addresses, unions, and structures.
648 /* Memory mapping of Core Hardware */
649 #define SCS_BASE (0xE000E000UL) /*!< System Control Space Base Address */
650 #define SysTick_BASE (SCS_BASE + 0x0010UL) /*!< SysTick Base Address */
651 #define NVIC_BASE (SCS_BASE + 0x0100UL) /*!< NVIC Base Address */
652 #define SCB_BASE (SCS_BASE + 0x0D00UL) /*!< System Control Block Base Address */
654 #define SCB ((SCB_Type *) SCB_BASE ) /*!< SCB configuration struct */
655 #define SysTick ((SysTick_Type *) SysTick_BASE ) /*!< SysTick configuration struct */
656 #define NVIC ((NVIC_Type *) NVIC_BASE ) /*!< NVIC configuration struct */
658 #if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1U)
659 #define MPU_BASE (SCS_BASE + 0x0D90UL) /*!< Memory Protection Unit */
660 #define MPU ((MPU_Type *) MPU_BASE ) /*!< Memory Protection Unit */
667 \defgroup CMSIS_deprecated_aliases Backwards Compatibility Aliases
668 \brief Alias definitions present for backwards compatibility for deprecated symbols.
672 #ifndef CMSIS_DISABLE_DEPRECATED
674 #define SCB_AIRCR_ENDIANESS_Pos SCB_AIRCR_ENDIANNESS_Pos
675 #define SCB_AIRCR_ENDIANESS_Msk SCB_AIRCR_ENDIANNESS_Msk
677 #endif // CMSIS_DISABLE_DEPRECATED
682 /*******************************************************************************
683 * Hardware Abstraction Layer
684 Core Function Interface contains:
685 - Core NVIC Functions
686 - Core SysTick Functions
687 - Core Register Access Functions
688 ******************************************************************************/
690 \defgroup CMSIS_Core_FunctionInterface Functions and Instructions Reference
695 /* ########################## NVIC functions #################################### */
697 \ingroup CMSIS_Core_FunctionInterface
698 \defgroup CMSIS_Core_NVICFunctions NVIC Functions
699 \brief Functions that manage interrupts and exceptions via the NVIC.
703 #ifdef CMSIS_NVIC_VIRTUAL
704 #ifndef CMSIS_NVIC_VIRTUAL_HEADER_FILE
705 #define CMSIS_NVIC_VIRTUAL_HEADER_FILE "cmsis_nvic_virtual.h"
707 #include CMSIS_NVIC_VIRTUAL_HEADER_FILE
709 #define NVIC_SetPriorityGrouping __NVIC_SetPriorityGrouping
710 #define NVIC_GetPriorityGrouping __NVIC_GetPriorityGrouping
711 #define NVIC_EnableIRQ __NVIC_EnableIRQ
712 #define NVIC_GetEnableIRQ __NVIC_GetEnableIRQ
713 #define NVIC_DisableIRQ __NVIC_DisableIRQ
714 #define NVIC_GetPendingIRQ __NVIC_GetPendingIRQ
715 #define NVIC_SetPendingIRQ __NVIC_SetPendingIRQ
716 #define NVIC_ClearPendingIRQ __NVIC_ClearPendingIRQ
717 /* NVIC_GetActive not available for Cortex-M0+ */
718 #define NVIC_SetPriority __NVIC_SetPriority
719 #define NVIC_GetPriority __NVIC_GetPriority
720 #define NVIC_SystemReset __NVIC_SystemReset
721 #endif /* CMSIS_NVIC_VIRTUAL */
723 #ifdef CMSIS_VECTAB_VIRTUAL
724 #ifndef CMSIS_VECTAB_VIRTUAL_HEADER_FILE
725 #define CMSIS_VECTAB_VIRTUAL_HEADER_FILE "cmsis_vectab_virtual.h"
727 #include CMSIS_VECTAB_VIRTUAL_HEADER_FILE
729 #define NVIC_SetVector __NVIC_SetVector
730 #define NVIC_GetVector __NVIC_GetVector
731 #endif /* (CMSIS_VECTAB_VIRTUAL) */
733 #define NVIC_USER_IRQ_OFFSET 16
736 /* The following EXC_RETURN values are saved the LR on exception entry */
737 #define EXC_RETURN_HANDLER (0xFFFFFFF1UL) /* return to Handler mode, uses MSP after return */
738 #define EXC_RETURN_THREAD_MSP (0xFFFFFFF9UL) /* return to Thread mode, uses MSP after return */
739 #define EXC_RETURN_THREAD_PSP (0xFFFFFFFDUL) /* return to Thread mode, uses PSP after return */
742 /* Interrupt Priorities are WORD accessible only under Armv6-M */
743 /* The following MACROS handle generation of the register offset and byte masks */
744 #define _BIT_SHIFT(IRQn) ( ((((uint32_t)(int32_t)(IRQn)) ) & 0x03UL) * 8UL)
745 #define _SHP_IDX(IRQn) ( (((((uint32_t)(int32_t)(IRQn)) & 0x0FUL)-8UL) >> 2UL) )
746 #define _IP_IDX(IRQn) ( (((uint32_t)(int32_t)(IRQn)) >> 2UL) )
748 #define __NVIC_SetPriorityGrouping(X) (void)(X)
749 #define __NVIC_GetPriorityGrouping() (0U)
752 \brief Enable Interrupt
753 \details Enables a device specific interrupt in the NVIC interrupt controller.
754 \param [in] IRQn Device specific interrupt number.
755 \note IRQn must not be negative.
757 __STATIC_INLINE void __NVIC_EnableIRQ(IRQn_Type IRQn)
759 if ((int32_t)(IRQn) >= 0)
761 __COMPILER_BARRIER();
762 NVIC->ISER[0U] = (uint32_t)(1UL << (((uint32_t)IRQn) & 0x1FUL));
763 __COMPILER_BARRIER();
769 \brief Get Interrupt Enable status
770 \details Returns a device specific interrupt enable status from the NVIC interrupt controller.
771 \param [in] IRQn Device specific interrupt number.
772 \return 0 Interrupt is not enabled.
773 \return 1 Interrupt is enabled.
774 \note IRQn must not be negative.
776 __STATIC_INLINE uint32_t __NVIC_GetEnableIRQ(IRQn_Type IRQn)
778 if ((int32_t)(IRQn) >= 0)
780 return((uint32_t)(((NVIC->ISER[0U] & (1UL << (((uint32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
790 \brief Disable Interrupt
791 \details Disables a device specific interrupt in the NVIC interrupt controller.
792 \param [in] IRQn Device specific interrupt number.
793 \note IRQn must not be negative.
795 __STATIC_INLINE void __NVIC_DisableIRQ(IRQn_Type IRQn)
797 if ((int32_t)(IRQn) >= 0)
799 NVIC->ICER[0U] = (uint32_t)(1UL << (((uint32_t)IRQn) & 0x1FUL));
807 \brief Get Pending Interrupt
808 \details Reads the NVIC pending register and returns the pending bit for the specified device specific interrupt.
809 \param [in] IRQn Device specific interrupt number.
810 \return 0 Interrupt status is not pending.
811 \return 1 Interrupt status is pending.
812 \note IRQn must not be negative.
814 __STATIC_INLINE uint32_t __NVIC_GetPendingIRQ(IRQn_Type IRQn)
816 if ((int32_t)(IRQn) >= 0)
818 return((uint32_t)(((NVIC->ISPR[0U] & (1UL << (((uint32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
828 \brief Set Pending Interrupt
829 \details Sets the pending bit of a device specific interrupt in the NVIC pending register.
830 \param [in] IRQn Device specific interrupt number.
831 \note IRQn must not be negative.
833 __STATIC_INLINE void __NVIC_SetPendingIRQ(IRQn_Type IRQn)
835 if ((int32_t)(IRQn) >= 0)
837 NVIC->ISPR[0U] = (uint32_t)(1UL << (((uint32_t)IRQn) & 0x1FUL));
843 \brief Clear Pending Interrupt
844 \details Clears the pending bit of a device specific interrupt in the NVIC pending register.
845 \param [in] IRQn Device specific interrupt number.
846 \note IRQn must not be negative.
848 __STATIC_INLINE void __NVIC_ClearPendingIRQ(IRQn_Type IRQn)
850 if ((int32_t)(IRQn) >= 0)
852 NVIC->ICPR[0U] = (uint32_t)(1UL << (((uint32_t)IRQn) & 0x1FUL));
858 \brief Set Interrupt Priority
859 \details Sets the priority of a device specific interrupt or a processor exception.
860 The interrupt number can be positive to specify a device specific interrupt,
861 or negative to specify a processor exception.
862 \param [in] IRQn Interrupt number.
863 \param [in] priority Priority to set.
864 \note The priority cannot be set for every processor exception.
866 __STATIC_INLINE void __NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
868 if ((int32_t)(IRQn) >= 0)
870 NVIC->IPR[_IP_IDX(IRQn)] = ((uint32_t)(NVIC->IPR[_IP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
871 (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
875 SCB->SHPR[_SHP_IDX(IRQn)] = ((uint32_t)(SCB->SHPR[_SHP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
876 (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
882 \brief Get Interrupt Priority
883 \details Reads the priority of a device specific interrupt or a processor exception.
884 The interrupt number can be positive to specify a device specific interrupt,
885 or negative to specify a processor exception.
886 \param [in] IRQn Interrupt number.
887 \return Interrupt Priority.
888 Value is aligned automatically to the implemented priority bits of the microcontroller.
890 __STATIC_INLINE uint32_t __NVIC_GetPriority(IRQn_Type IRQn)
893 if ((int32_t)(IRQn) >= 0)
895 return((uint32_t)(((NVIC->IPR[ _IP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
899 return((uint32_t)(((SCB->SHPR[_SHP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
905 \brief Encode Priority
906 \details Encodes the priority for an interrupt with the given priority group,
907 preemptive priority value, and subpriority value.
908 In case of a conflict between priority grouping and available
909 priority bits (__NVIC_PRIO_BITS), the smallest possible priority group is set.
910 \param [in] PriorityGroup Used priority group.
911 \param [in] PreemptPriority Preemptive priority value (starting from 0).
912 \param [in] SubPriority Subpriority value (starting from 0).
913 \return Encoded priority. Value can be used in the function \ref NVIC_SetPriority().
915 __STATIC_INLINE uint32_t NVIC_EncodePriority (uint32_t PriorityGroup, uint32_t PreemptPriority, uint32_t SubPriority)
917 uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL); /* only values 0..7 are used */
918 uint32_t PreemptPriorityBits;
919 uint32_t SubPriorityBits;
921 PreemptPriorityBits = ((7UL - PriorityGroupTmp) > (uint32_t)(__NVIC_PRIO_BITS)) ? (uint32_t)(__NVIC_PRIO_BITS) : (uint32_t)(7UL - PriorityGroupTmp);
922 SubPriorityBits = ((PriorityGroupTmp + (uint32_t)(__NVIC_PRIO_BITS)) < (uint32_t)7UL) ? (uint32_t)0UL : (uint32_t)((PriorityGroupTmp - 7UL) + (uint32_t)(__NVIC_PRIO_BITS));
925 ((PreemptPriority & (uint32_t)((1UL << (PreemptPriorityBits)) - 1UL)) << SubPriorityBits) |
926 ((SubPriority & (uint32_t)((1UL << (SubPriorityBits )) - 1UL)))
932 \brief Decode Priority
933 \details Decodes an interrupt priority value with a given priority group to
934 preemptive priority value and subpriority value.
935 In case of a conflict between priority grouping and available
936 priority bits (__NVIC_PRIO_BITS) the smallest possible priority group is set.
937 \param [in] Priority Priority value, which can be retrieved with the function \ref NVIC_GetPriority().
938 \param [in] PriorityGroup Used priority group.
939 \param [out] pPreemptPriority Preemptive priority value (starting from 0).
940 \param [out] pSubPriority Subpriority value (starting from 0).
942 __STATIC_INLINE void NVIC_DecodePriority (uint32_t Priority, uint32_t PriorityGroup, uint32_t* const pPreemptPriority, uint32_t* const pSubPriority)
944 uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL); /* only values 0..7 are used */
945 uint32_t PreemptPriorityBits;
946 uint32_t SubPriorityBits;
948 PreemptPriorityBits = ((7UL - PriorityGroupTmp) > (uint32_t)(__NVIC_PRIO_BITS)) ? (uint32_t)(__NVIC_PRIO_BITS) : (uint32_t)(7UL - PriorityGroupTmp);
949 SubPriorityBits = ((PriorityGroupTmp + (uint32_t)(__NVIC_PRIO_BITS)) < (uint32_t)7UL) ? (uint32_t)0UL : (uint32_t)((PriorityGroupTmp - 7UL) + (uint32_t)(__NVIC_PRIO_BITS));
951 *pPreemptPriority = (Priority >> SubPriorityBits) & (uint32_t)((1UL << (PreemptPriorityBits)) - 1UL);
952 *pSubPriority = (Priority ) & (uint32_t)((1UL << (SubPriorityBits )) - 1UL);
957 \brief Set Interrupt Vector
958 \details Sets an interrupt vector in SRAM based interrupt vector table.
959 The interrupt number can be positive to specify a device specific interrupt,
960 or negative to specify a processor exception.
961 VTOR must been relocated to SRAM before.
962 If VTOR is not present address 0 must be mapped to SRAM.
963 \param [in] IRQn Interrupt number
964 \param [in] vector Address of interrupt handler function
966 __STATIC_INLINE void __NVIC_SetVector(IRQn_Type IRQn, uint32_t vector)
968 #if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
969 uint32_t *vectors = (uint32_t *) ((uintptr_t) SCB->VTOR);
970 vectors[(int32_t)IRQn + NVIC_USER_IRQ_OFFSET] = vector;
972 uint32_t *vectors = (uint32_t *)(NVIC_USER_IRQ_OFFSET << 2); /* point to 1st user interrupt */
973 *(vectors + (int32_t)IRQn) = vector; /* use pointer arithmetic to access vector */
975 /* ARM Application Note 321 states that the M0+ does not require the architectural barrier */
980 \brief Get Interrupt Vector
981 \details Reads an interrupt vector from interrupt vector table.
982 The interrupt number can be positive to specify a device specific interrupt,
983 or negative to specify a processor exception.
984 \param [in] IRQn Interrupt number.
985 \return Address of interrupt handler function
987 __STATIC_INLINE uint32_t __NVIC_GetVector(IRQn_Type IRQn)
989 #if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
990 uint32_t *vectors = (uint32_t *) ((uintptr_t) SCB->VTOR);
991 return vectors[(int32_t)IRQn + NVIC_USER_IRQ_OFFSET];
993 uint32_t *vectors = (uint32_t *)(NVIC_USER_IRQ_OFFSET << 2); /* point to 1st user interrupt */
994 return *(vectors + (int32_t)IRQn); /* use pointer arithmetic to access vector */
1001 \details Initiates a system reset request to reset the MCU.
1003 __NO_RETURN __STATIC_INLINE void __NVIC_SystemReset(void)
1005 __DSB(); /* Ensure all outstanding memory accesses included
1006 buffered write are completed before reset */
1007 SCB->AIRCR = ((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
1008 SCB_AIRCR_SYSRESETREQ_Msk);
1009 __DSB(); /* Ensure completion of memory access */
1011 for(;;) /* wait until reset */
1017 /*@} end of CMSIS_Core_NVICFunctions */
1019 /* ########################## MPU functions #################################### */
1021 #if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1U)
1023 #include "m-profile/armv7m_mpu.h"
1027 /* ########################## FPU functions #################################### */
1029 \ingroup CMSIS_Core_FunctionInterface
1030 \defgroup CMSIS_Core_FpuFunctions FPU Functions
1031 \brief Function that provides FPU type.
1037 \details returns the FPU type
1040 - \b 1: Single precision FPU
1041 - \b 2: Double + Single precision FPU
1043 __STATIC_INLINE uint32_t SCB_GetFPUType(void)
1045 return 0U; /* No FPU */
1049 /*@} end of CMSIS_Core_FpuFunctions */
1053 /* ################################## SysTick function ############################################ */
1055 \ingroup CMSIS_Core_FunctionInterface
1056 \defgroup CMSIS_Core_SysTickFunctions SysTick Functions
1057 \brief Functions that configure the System.
1061 #if defined (__Vendor_SysTickConfig) && (__Vendor_SysTickConfig == 0U)
1064 \brief System Tick Configuration
1065 \details Initializes the System Timer and its interrupt, and starts the System Tick Timer.
1066 Counter is in free running mode to generate periodic interrupts.
1067 \param [in] ticks Number of ticks between two interrupts.
1068 \return 0 Function succeeded.
1069 \return 1 Function failed.
1070 \note When the variable <b>__Vendor_SysTickConfig</b> is set to 1, then the
1071 function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b>
1072 must contain a vendor-specific implementation of this function.
1074 __STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
1076 if ((ticks - 1UL) > SysTick_LOAD_RELOAD_Msk)
1078 return (1UL); /* Reload value impossible */
1081 SysTick->LOAD = (uint32_t)(ticks - 1UL); /* set reload register */
1082 NVIC_SetPriority (SysTick_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL); /* set Priority for Systick Interrupt */
1083 SysTick->VAL = 0UL; /* Load the SysTick Counter Value */
1084 SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
1085 SysTick_CTRL_TICKINT_Msk |
1086 SysTick_CTRL_ENABLE_Msk; /* Enable SysTick IRQ and SysTick Timer */
1087 return (0UL); /* Function successful */
1092 /*@} end of CMSIS_Core_SysTickFunctions */
1101 #endif /* __CORE_CM0PLUS_H_DEPENDANT */
1103 #endif /* __CMSIS_GENERIC */