1 /**************************************************************************//**
3 * @brief CMSIS Cortex-M0 Core Peripheral Access Layer Header File
5 * @date 13. September 2016
6 ******************************************************************************/
8 * Copyright (c) 2009-2016 ARM Limited. All rights reserved.
10 * SPDX-License-Identifier: Apache-2.0
12 * Licensed under the Apache License, Version 2.0 (the License); you may
13 * not use this file except in compliance with the License.
14 * You may obtain a copy of the License at
16 * http://www.apache.org/licenses/LICENSE-2.0
18 * Unless required by applicable law or agreed to in writing, software
19 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
20 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
21 * See the License for the specific language governing permissions and
22 * limitations under the License.
25 #if defined ( __ICCARM__ )
26 #pragma system_include /* treat file as system include file for MISRA check */
27 #elif defined (__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
28 #pragma clang system_header /* treat file as system include file */
31 #ifndef __CORE_CM0_H_GENERIC
32 #define __CORE_CM0_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 /* CMSIS CM0 definitions */
64 #define __CM0_CMSIS_VERSION_MAIN ( 5U) /*!< [31:16] CMSIS HAL main version */
65 #define __CM0_CMSIS_VERSION_SUB ( 0U) /*!< [15:0] CMSIS HAL sub version */
66 #define __CM0_CMSIS_VERSION ((__CM0_CMSIS_VERSION_MAIN << 16U) | \
67 __CM0_CMSIS_VERSION_SUB ) /*!< CMSIS HAL version number */
69 #define __CORTEX_M (0U) /*!< Cortex-M Core */
71 /** __FPU_USED indicates whether an FPU is used or not.
72 This core does not support an FPU at all
76 #if defined ( __CC_ARM )
77 #if defined __TARGET_FPU_VFP
78 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
81 #elif defined (__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
82 #if defined __ARM_PCS_VFP
83 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
86 #elif defined ( __GNUC__ )
87 #if defined (__VFP_FP__) && !defined(__SOFTFP__)
88 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
91 #elif defined ( __ICCARM__ )
92 #if defined __ARMVFP__
93 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
96 #elif defined ( __TI_ARM__ )
97 #if defined __TI_VFP_SUPPORT__
98 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
101 #elif defined ( __TASKING__ )
102 #if defined __FPU_VFP__
103 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
106 #elif defined ( __CSMC__ )
107 #if ( __CSMC__ & 0x400U)
108 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
113 #include "cmsis_compiler.h" /* CMSIS compiler specific defines */
120 #endif /* __CORE_CM0_H_GENERIC */
122 #ifndef __CMSIS_GENERIC
124 #ifndef __CORE_CM0_H_DEPENDANT
125 #define __CORE_CM0_H_DEPENDANT
131 /* check device defines and use defaults */
132 #if defined __CHECK_DEVICE_DEFINES
134 #define __CM0_REV 0x0000U
135 #warning "__CM0_REV not defined in device header file; using default!"
138 #ifndef __NVIC_PRIO_BITS
139 #define __NVIC_PRIO_BITS 2U
140 #warning "__NVIC_PRIO_BITS not defined in device header file; using default!"
143 #ifndef __Vendor_SysTickConfig
144 #define __Vendor_SysTickConfig 0U
145 #warning "__Vendor_SysTickConfig not defined in device header file; using default!"
149 /* IO definitions (access restrictions to peripheral registers) */
151 \defgroup CMSIS_glob_defs CMSIS Global Defines
153 <strong>IO Type Qualifiers</strong> are used
154 \li to specify the access to peripheral variables.
155 \li for automatic generation of peripheral register debug information.
158 #define __I volatile /*!< Defines 'read only' permissions */
160 #define __I volatile const /*!< Defines 'read only' permissions */
162 #define __O volatile /*!< Defines 'write only' permissions */
163 #define __IO volatile /*!< Defines 'read / write' permissions */
165 /* following defines should be used for structure members */
166 #define __IM volatile const /*! Defines 'read only' structure member permissions */
167 #define __OM volatile /*! Defines 'write only' structure member permissions */
168 #define __IOM volatile /*! Defines 'read / write' structure member permissions */
170 /*@} end of group Cortex_M0 */
174 /*******************************************************************************
175 * Register Abstraction
176 Core Register contain:
180 - Core SysTick Register
181 ******************************************************************************/
183 \defgroup CMSIS_core_register Defines and Type Definitions
184 \brief Type definitions and defines for Cortex-M processor based devices.
188 \ingroup CMSIS_core_register
189 \defgroup CMSIS_CORE Status and Control Registers
190 \brief Core Register type definitions.
195 \brief Union type to access the Application Program Status Register (APSR).
201 uint32_t _reserved0:28; /*!< bit: 0..27 Reserved */
202 uint32_t V:1; /*!< bit: 28 Overflow condition code flag */
203 uint32_t C:1; /*!< bit: 29 Carry condition code flag */
204 uint32_t Z:1; /*!< bit: 30 Zero condition code flag */
205 uint32_t N:1; /*!< bit: 31 Negative condition code flag */
206 } b; /*!< Structure used for bit access */
207 uint32_t w; /*!< Type used for word access */
210 /* APSR Register Definitions */
211 #define APSR_N_Pos 31U /*!< APSR: N Position */
212 #define APSR_N_Msk (1UL << APSR_N_Pos) /*!< APSR: N Mask */
214 #define APSR_Z_Pos 30U /*!< APSR: Z Position */
215 #define APSR_Z_Msk (1UL << APSR_Z_Pos) /*!< APSR: Z Mask */
217 #define APSR_C_Pos 29U /*!< APSR: C Position */
218 #define APSR_C_Msk (1UL << APSR_C_Pos) /*!< APSR: C Mask */
220 #define APSR_V_Pos 28U /*!< APSR: V Position */
221 #define APSR_V_Msk (1UL << APSR_V_Pos) /*!< APSR: V Mask */
225 \brief Union type to access the Interrupt Program Status Register (IPSR).
231 uint32_t ISR:9; /*!< bit: 0.. 8 Exception number */
232 uint32_t _reserved0:23; /*!< bit: 9..31 Reserved */
233 } b; /*!< Structure used for bit access */
234 uint32_t w; /*!< Type used for word access */
237 /* IPSR Register Definitions */
238 #define IPSR_ISR_Pos 0U /*!< IPSR: ISR Position */
239 #define IPSR_ISR_Msk (0x1FFUL /*<< IPSR_ISR_Pos*/) /*!< IPSR: ISR Mask */
243 \brief Union type to access the Special-Purpose Program Status Registers (xPSR).
249 uint32_t ISR:9; /*!< bit: 0.. 8 Exception number */
250 uint32_t _reserved0:15; /*!< bit: 9..23 Reserved */
251 uint32_t T:1; /*!< bit: 24 Thumb bit (read 0) */
252 uint32_t _reserved1:3; /*!< bit: 25..27 Reserved */
253 uint32_t V:1; /*!< bit: 28 Overflow condition code flag */
254 uint32_t C:1; /*!< bit: 29 Carry condition code flag */
255 uint32_t Z:1; /*!< bit: 30 Zero condition code flag */
256 uint32_t N:1; /*!< bit: 31 Negative condition code flag */
257 } b; /*!< Structure used for bit access */
258 uint32_t w; /*!< Type used for word access */
261 /* xPSR Register Definitions */
262 #define xPSR_N_Pos 31U /*!< xPSR: N Position */
263 #define xPSR_N_Msk (1UL << xPSR_N_Pos) /*!< xPSR: N Mask */
265 #define xPSR_Z_Pos 30U /*!< xPSR: Z Position */
266 #define xPSR_Z_Msk (1UL << xPSR_Z_Pos) /*!< xPSR: Z Mask */
268 #define xPSR_C_Pos 29U /*!< xPSR: C Position */
269 #define xPSR_C_Msk (1UL << xPSR_C_Pos) /*!< xPSR: C Mask */
271 #define xPSR_V_Pos 28U /*!< xPSR: V Position */
272 #define xPSR_V_Msk (1UL << xPSR_V_Pos) /*!< xPSR: V Mask */
274 #define xPSR_T_Pos 24U /*!< xPSR: T Position */
275 #define xPSR_T_Msk (1UL << xPSR_T_Pos) /*!< xPSR: T Mask */
277 #define xPSR_ISR_Pos 0U /*!< xPSR: ISR Position */
278 #define xPSR_ISR_Msk (0x1FFUL /*<< xPSR_ISR_Pos*/) /*!< xPSR: ISR Mask */
282 \brief Union type to access the Control Registers (CONTROL).
288 uint32_t _reserved0:1; /*!< bit: 0 Reserved */
289 uint32_t SPSEL:1; /*!< bit: 1 Stack to be used */
290 uint32_t _reserved1:30; /*!< bit: 2..31 Reserved */
291 } b; /*!< Structure used for bit access */
292 uint32_t w; /*!< Type used for word access */
295 /* CONTROL Register Definitions */
296 #define CONTROL_SPSEL_Pos 1U /*!< CONTROL: SPSEL Position */
297 #define CONTROL_SPSEL_Msk (1UL << CONTROL_SPSEL_Pos) /*!< CONTROL: SPSEL Mask */
299 /*@} end of group CMSIS_CORE */
303 \ingroup CMSIS_core_register
304 \defgroup CMSIS_NVIC Nested Vectored Interrupt Controller (NVIC)
305 \brief Type definitions for the NVIC Registers
310 \brief Structure type to access the Nested Vectored Interrupt Controller (NVIC).
314 __IOM uint32_t ISER[1U]; /*!< Offset: 0x000 (R/W) Interrupt Set Enable Register */
315 uint32_t RESERVED0[31U];
316 __IOM uint32_t ICER[1U]; /*!< Offset: 0x080 (R/W) Interrupt Clear Enable Register */
317 uint32_t RSERVED1[31U];
318 __IOM uint32_t ISPR[1U]; /*!< Offset: 0x100 (R/W) Interrupt Set Pending Register */
319 uint32_t RESERVED2[31U];
320 __IOM uint32_t ICPR[1U]; /*!< Offset: 0x180 (R/W) Interrupt Clear Pending Register */
321 uint32_t RESERVED3[31U];
322 uint32_t RESERVED4[64U];
323 __IOM uint32_t IP[8U]; /*!< Offset: 0x300 (R/W) Interrupt Priority Register */
326 /*@} end of group CMSIS_NVIC */
330 \ingroup CMSIS_core_register
331 \defgroup CMSIS_SCB System Control Block (SCB)
332 \brief Type definitions for the System Control Block Registers
337 \brief Structure type to access the System Control Block (SCB).
341 __IM uint32_t CPUID; /*!< Offset: 0x000 (R/ ) CPUID Base Register */
342 __IOM uint32_t ICSR; /*!< Offset: 0x004 (R/W) Interrupt Control and State Register */
344 __IOM uint32_t AIRCR; /*!< Offset: 0x00C (R/W) Application Interrupt and Reset Control Register */
345 __IOM uint32_t SCR; /*!< Offset: 0x010 (R/W) System Control Register */
346 __IOM uint32_t CCR; /*!< Offset: 0x014 (R/W) Configuration Control Register */
348 __IOM uint32_t SHP[2U]; /*!< Offset: 0x01C (R/W) System Handlers Priority Registers. [0] is RESERVED */
349 __IOM uint32_t SHCSR; /*!< Offset: 0x024 (R/W) System Handler Control and State Register */
352 /* SCB CPUID Register Definitions */
353 #define SCB_CPUID_IMPLEMENTER_Pos 24U /*!< SCB CPUID: IMPLEMENTER Position */
354 #define SCB_CPUID_IMPLEMENTER_Msk (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos) /*!< SCB CPUID: IMPLEMENTER Mask */
356 #define SCB_CPUID_VARIANT_Pos 20U /*!< SCB CPUID: VARIANT Position */
357 #define SCB_CPUID_VARIANT_Msk (0xFUL << SCB_CPUID_VARIANT_Pos) /*!< SCB CPUID: VARIANT Mask */
359 #define SCB_CPUID_ARCHITECTURE_Pos 16U /*!< SCB CPUID: ARCHITECTURE Position */
360 #define SCB_CPUID_ARCHITECTURE_Msk (0xFUL << SCB_CPUID_ARCHITECTURE_Pos) /*!< SCB CPUID: ARCHITECTURE Mask */
362 #define SCB_CPUID_PARTNO_Pos 4U /*!< SCB CPUID: PARTNO Position */
363 #define SCB_CPUID_PARTNO_Msk (0xFFFUL << SCB_CPUID_PARTNO_Pos) /*!< SCB CPUID: PARTNO Mask */
365 #define SCB_CPUID_REVISION_Pos 0U /*!< SCB CPUID: REVISION Position */
366 #define SCB_CPUID_REVISION_Msk (0xFUL /*<< SCB_CPUID_REVISION_Pos*/) /*!< SCB CPUID: REVISION Mask */
368 /* SCB Interrupt Control State Register Definitions */
369 #define SCB_ICSR_NMIPENDSET_Pos 31U /*!< SCB ICSR: NMIPENDSET Position */
370 #define SCB_ICSR_NMIPENDSET_Msk (1UL << SCB_ICSR_NMIPENDSET_Pos) /*!< SCB ICSR: NMIPENDSET Mask */
372 #define SCB_ICSR_PENDSVSET_Pos 28U /*!< SCB ICSR: PENDSVSET Position */
373 #define SCB_ICSR_PENDSVSET_Msk (1UL << SCB_ICSR_PENDSVSET_Pos) /*!< SCB ICSR: PENDSVSET Mask */
375 #define SCB_ICSR_PENDSVCLR_Pos 27U /*!< SCB ICSR: PENDSVCLR Position */
376 #define SCB_ICSR_PENDSVCLR_Msk (1UL << SCB_ICSR_PENDSVCLR_Pos) /*!< SCB ICSR: PENDSVCLR Mask */
378 #define SCB_ICSR_PENDSTSET_Pos 26U /*!< SCB ICSR: PENDSTSET Position */
379 #define SCB_ICSR_PENDSTSET_Msk (1UL << SCB_ICSR_PENDSTSET_Pos) /*!< SCB ICSR: PENDSTSET Mask */
381 #define SCB_ICSR_PENDSTCLR_Pos 25U /*!< SCB ICSR: PENDSTCLR Position */
382 #define SCB_ICSR_PENDSTCLR_Msk (1UL << SCB_ICSR_PENDSTCLR_Pos) /*!< SCB ICSR: PENDSTCLR Mask */
384 #define SCB_ICSR_ISRPREEMPT_Pos 23U /*!< SCB ICSR: ISRPREEMPT Position */
385 #define SCB_ICSR_ISRPREEMPT_Msk (1UL << SCB_ICSR_ISRPREEMPT_Pos) /*!< SCB ICSR: ISRPREEMPT Mask */
387 #define SCB_ICSR_ISRPENDING_Pos 22U /*!< SCB ICSR: ISRPENDING Position */
388 #define SCB_ICSR_ISRPENDING_Msk (1UL << SCB_ICSR_ISRPENDING_Pos) /*!< SCB ICSR: ISRPENDING Mask */
390 #define SCB_ICSR_VECTPENDING_Pos 12U /*!< SCB ICSR: VECTPENDING Position */
391 #define SCB_ICSR_VECTPENDING_Msk (0x1FFUL << SCB_ICSR_VECTPENDING_Pos) /*!< SCB ICSR: VECTPENDING Mask */
393 #define SCB_ICSR_VECTACTIVE_Pos 0U /*!< SCB ICSR: VECTACTIVE Position */
394 #define SCB_ICSR_VECTACTIVE_Msk (0x1FFUL /*<< SCB_ICSR_VECTACTIVE_Pos*/) /*!< SCB ICSR: VECTACTIVE Mask */
396 /* SCB Application Interrupt and Reset Control Register Definitions */
397 #define SCB_AIRCR_VECTKEY_Pos 16U /*!< SCB AIRCR: VECTKEY Position */
398 #define SCB_AIRCR_VECTKEY_Msk (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos) /*!< SCB AIRCR: VECTKEY Mask */
400 #define SCB_AIRCR_VECTKEYSTAT_Pos 16U /*!< SCB AIRCR: VECTKEYSTAT Position */
401 #define SCB_AIRCR_VECTKEYSTAT_Msk (0xFFFFUL << SCB_AIRCR_VECTKEYSTAT_Pos) /*!< SCB AIRCR: VECTKEYSTAT Mask */
403 #define SCB_AIRCR_ENDIANESS_Pos 15U /*!< SCB AIRCR: ENDIANESS Position */
404 #define SCB_AIRCR_ENDIANESS_Msk (1UL << SCB_AIRCR_ENDIANESS_Pos) /*!< SCB AIRCR: ENDIANESS Mask */
406 #define SCB_AIRCR_SYSRESETREQ_Pos 2U /*!< SCB AIRCR: SYSRESETREQ Position */
407 #define SCB_AIRCR_SYSRESETREQ_Msk (1UL << SCB_AIRCR_SYSRESETREQ_Pos) /*!< SCB AIRCR: SYSRESETREQ Mask */
409 #define SCB_AIRCR_VECTCLRACTIVE_Pos 1U /*!< SCB AIRCR: VECTCLRACTIVE Position */
410 #define SCB_AIRCR_VECTCLRACTIVE_Msk (1UL << SCB_AIRCR_VECTCLRACTIVE_Pos) /*!< SCB AIRCR: VECTCLRACTIVE Mask */
412 /* SCB System Control Register Definitions */
413 #define SCB_SCR_SEVONPEND_Pos 4U /*!< SCB SCR: SEVONPEND Position */
414 #define SCB_SCR_SEVONPEND_Msk (1UL << SCB_SCR_SEVONPEND_Pos) /*!< SCB SCR: SEVONPEND Mask */
416 #define SCB_SCR_SLEEPDEEP_Pos 2U /*!< SCB SCR: SLEEPDEEP Position */
417 #define SCB_SCR_SLEEPDEEP_Msk (1UL << SCB_SCR_SLEEPDEEP_Pos) /*!< SCB SCR: SLEEPDEEP Mask */
419 #define SCB_SCR_SLEEPONEXIT_Pos 1U /*!< SCB SCR: SLEEPONEXIT Position */
420 #define SCB_SCR_SLEEPONEXIT_Msk (1UL << SCB_SCR_SLEEPONEXIT_Pos) /*!< SCB SCR: SLEEPONEXIT Mask */
422 /* SCB Configuration Control Register Definitions */
423 #define SCB_CCR_STKALIGN_Pos 9U /*!< SCB CCR: STKALIGN Position */
424 #define SCB_CCR_STKALIGN_Msk (1UL << SCB_CCR_STKALIGN_Pos) /*!< SCB CCR: STKALIGN Mask */
426 #define SCB_CCR_UNALIGN_TRP_Pos 3U /*!< SCB CCR: UNALIGN_TRP Position */
427 #define SCB_CCR_UNALIGN_TRP_Msk (1UL << SCB_CCR_UNALIGN_TRP_Pos) /*!< SCB CCR: UNALIGN_TRP Mask */
429 /* SCB System Handler Control and State Register Definitions */
430 #define SCB_SHCSR_SVCALLPENDED_Pos 15U /*!< SCB SHCSR: SVCALLPENDED Position */
431 #define SCB_SHCSR_SVCALLPENDED_Msk (1UL << SCB_SHCSR_SVCALLPENDED_Pos) /*!< SCB SHCSR: SVCALLPENDED Mask */
433 /*@} end of group CMSIS_SCB */
437 \ingroup CMSIS_core_register
438 \defgroup CMSIS_SysTick System Tick Timer (SysTick)
439 \brief Type definitions for the System Timer Registers.
444 \brief Structure type to access the System Timer (SysTick).
448 __IOM uint32_t CTRL; /*!< Offset: 0x000 (R/W) SysTick Control and Status Register */
449 __IOM uint32_t LOAD; /*!< Offset: 0x004 (R/W) SysTick Reload Value Register */
450 __IOM uint32_t VAL; /*!< Offset: 0x008 (R/W) SysTick Current Value Register */
451 __IM uint32_t CALIB; /*!< Offset: 0x00C (R/ ) SysTick Calibration Register */
454 /* SysTick Control / Status Register Definitions */
455 #define SysTick_CTRL_COUNTFLAG_Pos 16U /*!< SysTick CTRL: COUNTFLAG Position */
456 #define SysTick_CTRL_COUNTFLAG_Msk (1UL << SysTick_CTRL_COUNTFLAG_Pos) /*!< SysTick CTRL: COUNTFLAG Mask */
458 #define SysTick_CTRL_CLKSOURCE_Pos 2U /*!< SysTick CTRL: CLKSOURCE Position */
459 #define SysTick_CTRL_CLKSOURCE_Msk (1UL << SysTick_CTRL_CLKSOURCE_Pos) /*!< SysTick CTRL: CLKSOURCE Mask */
461 #define SysTick_CTRL_TICKINT_Pos 1U /*!< SysTick CTRL: TICKINT Position */
462 #define SysTick_CTRL_TICKINT_Msk (1UL << SysTick_CTRL_TICKINT_Pos) /*!< SysTick CTRL: TICKINT Mask */
464 #define SysTick_CTRL_ENABLE_Pos 0U /*!< SysTick CTRL: ENABLE Position */
465 #define SysTick_CTRL_ENABLE_Msk (1UL /*<< SysTick_CTRL_ENABLE_Pos*/) /*!< SysTick CTRL: ENABLE Mask */
467 /* SysTick Reload Register Definitions */
468 #define SysTick_LOAD_RELOAD_Pos 0U /*!< SysTick LOAD: RELOAD Position */
469 #define SysTick_LOAD_RELOAD_Msk (0xFFFFFFUL /*<< SysTick_LOAD_RELOAD_Pos*/) /*!< SysTick LOAD: RELOAD Mask */
471 /* SysTick Current Register Definitions */
472 #define SysTick_VAL_CURRENT_Pos 0U /*!< SysTick VAL: CURRENT Position */
473 #define SysTick_VAL_CURRENT_Msk (0xFFFFFFUL /*<< SysTick_VAL_CURRENT_Pos*/) /*!< SysTick VAL: CURRENT Mask */
475 /* SysTick Calibration Register Definitions */
476 #define SysTick_CALIB_NOREF_Pos 31U /*!< SysTick CALIB: NOREF Position */
477 #define SysTick_CALIB_NOREF_Msk (1UL << SysTick_CALIB_NOREF_Pos) /*!< SysTick CALIB: NOREF Mask */
479 #define SysTick_CALIB_SKEW_Pos 30U /*!< SysTick CALIB: SKEW Position */
480 #define SysTick_CALIB_SKEW_Msk (1UL << SysTick_CALIB_SKEW_Pos) /*!< SysTick CALIB: SKEW Mask */
482 #define SysTick_CALIB_TENMS_Pos 0U /*!< SysTick CALIB: TENMS Position */
483 #define SysTick_CALIB_TENMS_Msk (0xFFFFFFUL /*<< SysTick_CALIB_TENMS_Pos*/) /*!< SysTick CALIB: TENMS Mask */
485 /*@} end of group CMSIS_SysTick */
489 \ingroup CMSIS_core_register
490 \defgroup CMSIS_CoreDebug Core Debug Registers (CoreDebug)
491 \brief Cortex-M0 Core Debug Registers (DCB registers, SHCSR, and DFSR) are only accessible over DAP and not via processor.
492 Therefore they are not covered by the Cortex-M0 header file.
495 /*@} end of group CMSIS_CoreDebug */
499 \ingroup CMSIS_core_register
500 \defgroup CMSIS_core_bitfield Core register bit field macros
501 \brief Macros for use with bit field definitions (xxx_Pos, xxx_Msk).
506 \brief Mask and shift a bit field value for use in a register bit range.
507 \param[in] field Name of the register bit field.
508 \param[in] value Value of the bit field. This parameter is interpreted as an uint32_t type.
509 \return Masked and shifted value.
511 #define _VAL2FLD(field, value) (((uint32_t)(value) << field ## _Pos) & field ## _Msk)
514 \brief Mask and shift a register value to extract a bit filed value.
515 \param[in] field Name of the register bit field.
516 \param[in] value Value of register. This parameter is interpreted as an uint32_t type.
517 \return Masked and shifted bit field value.
519 #define _FLD2VAL(field, value) (((uint32_t)(value) & field ## _Msk) >> field ## _Pos)
521 /*@} end of group CMSIS_core_bitfield */
525 \ingroup CMSIS_core_register
526 \defgroup CMSIS_core_base Core Definitions
527 \brief Definitions for base addresses, unions, and structures.
531 /* Memory mapping of Cortex-M0 Hardware */
532 #define SCS_BASE (0xE000E000UL) /*!< System Control Space Base Address */
533 #define SysTick_BASE (SCS_BASE + 0x0010UL) /*!< SysTick Base Address */
534 #define NVIC_BASE (SCS_BASE + 0x0100UL) /*!< NVIC Base Address */
535 #define SCB_BASE (SCS_BASE + 0x0D00UL) /*!< System Control Block Base Address */
537 #define SCB ((SCB_Type *) SCB_BASE ) /*!< SCB configuration struct */
538 #define SysTick ((SysTick_Type *) SysTick_BASE ) /*!< SysTick configuration struct */
539 #define NVIC ((NVIC_Type *) NVIC_BASE ) /*!< NVIC configuration struct */
546 /*******************************************************************************
547 * Hardware Abstraction Layer
548 Core Function Interface contains:
549 - Core NVIC Functions
550 - Core SysTick Functions
551 - Core Register Access Functions
552 ******************************************************************************/
554 \defgroup CMSIS_Core_FunctionInterface Functions and Instructions Reference
559 /* ########################## NVIC functions #################################### */
561 \ingroup CMSIS_Core_FunctionInterface
562 \defgroup CMSIS_Core_NVICFunctions NVIC Functions
563 \brief Functions that manage interrupts and exceptions via the NVIC.
567 /* Interrupt Priorities are WORD accessible only under ARMv6M */
568 /* The following MACROS handle generation of the register offset and byte masks */
569 #define _BIT_SHIFT(IRQn) ( ((((uint32_t)(int32_t)(IRQn)) ) & 0x03UL) * 8UL)
570 #define _SHP_IDX(IRQn) ( (((((uint32_t)(int32_t)(IRQn)) & 0x0FUL)-8UL) >> 2UL) )
571 #define _IP_IDX(IRQn) ( (((uint32_t)(int32_t)(IRQn)) >> 2UL) )
575 \brief Enable Interrupt
576 \details Enables a device specific interrupt in the NVIC interrupt controller.
577 \param [in] IRQn Device specific interrupt number.
578 \note IRQn must not be negative.
580 __STATIC_INLINE void NVIC_EnableIRQ(IRQn_Type IRQn)
582 if ((int32_t)(IRQn) >= 0)
584 NVIC->ISER[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
590 \brief Get Interrupt Enable status
591 \details Returns a device specific interrupt enable status from the NVIC interrupt controller.
592 \param [in] IRQn Device specific interrupt number.
593 \return 0 Interrupt is not enabled.
594 \return 1 Interrupt is enabled.
595 \note IRQn must not be negative.
597 __STATIC_INLINE uint32_t NVIC_GetEnableIRQ(IRQn_Type IRQn)
599 if ((int32_t)(IRQn) >= 0)
601 return((uint32_t)(((NVIC->ISER[0U] & (1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
611 \brief Disable Interrupt
612 \details Disables a device specific interrupt in the NVIC interrupt controller.
613 \param [in] IRQn Device specific interrupt number.
614 \note IRQn must not be negative.
616 __STATIC_INLINE void NVIC_DisableIRQ(IRQn_Type IRQn)
618 if ((int32_t)(IRQn) >= 0)
620 NVIC->ICER[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
626 \brief Get Pending Interrupt
627 \details Reads the NVIC pending register and returns the pending bit for the specified device specific interrupt.
628 \param [in] IRQn Device specific interrupt number.
629 \return 0 Interrupt status is not pending.
630 \return 1 Interrupt status is pending.
631 \note IRQn must not be negative.
633 __STATIC_INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
635 if ((int32_t)(IRQn) >= 0)
637 return((uint32_t)(((NVIC->ISPR[0U] & (1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
647 \brief Set Pending Interrupt
648 \details Sets the pending bit of a device specific interrupt in the NVIC pending register.
649 \param [in] IRQn Device specific interrupt number.
650 \note IRQn must not be negative.
652 __STATIC_INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn)
654 if ((int32_t)(IRQn) >= 0)
656 NVIC->ISPR[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
662 \brief Clear Pending Interrupt
663 \details Clears the pending bit of a device specific interrupt in the NVIC pending register.
664 \param [in] IRQn Device specific interrupt number.
665 \note IRQn must not be negative.
667 __STATIC_INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
669 if ((int32_t)(IRQn) >= 0)
671 NVIC->ICPR[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
677 \brief Set Interrupt Priority
678 \details Sets the priority of a device specific interrupt or a processor exception.
679 The interrupt number can be positive to specify a device specific interrupt,
680 or negative to specify a processor exception.
681 \param [in] IRQn Interrupt number.
682 \param [in] priority Priority to set.
683 \note The priority cannot be set for every processor exception.
685 __STATIC_INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
687 if ((int32_t)(IRQn) >= 0)
689 NVIC->IP[_IP_IDX(IRQn)] = ((uint32_t)(NVIC->IP[_IP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
690 (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
694 SCB->SHP[_SHP_IDX(IRQn)] = ((uint32_t)(SCB->SHP[_SHP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
695 (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
701 \brief Get Interrupt Priority
702 \details Reads the priority of a device specific interrupt or a processor exception.
703 The interrupt number can be positive to specify a device specific interrupt,
704 or negative to specify a processor exception.
705 \param [in] IRQn Interrupt number.
706 \return Interrupt Priority.
707 Value is aligned automatically to the implemented priority bits of the microcontroller.
709 __STATIC_INLINE uint32_t NVIC_GetPriority(IRQn_Type IRQn)
712 if ((int32_t)(IRQn) >= 0)
714 return((uint32_t)(((NVIC->IP[ _IP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
718 return((uint32_t)(((SCB->SHP[_SHP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
725 \details Initiates a system reset request to reset the MCU.
727 __STATIC_INLINE void NVIC_SystemReset(void)
729 __DSB(); /* Ensure all outstanding memory accesses included
730 buffered write are completed before reset */
731 SCB->AIRCR = ((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
732 SCB_AIRCR_SYSRESETREQ_Msk);
733 __DSB(); /* Ensure completion of memory access */
735 for(;;) /* wait until reset */
741 /*@} end of CMSIS_Core_NVICFunctions */
744 /* ########################## FPU functions #################################### */
746 \ingroup CMSIS_Core_FunctionInterface
747 \defgroup CMSIS_Core_FpuFunctions FPU Functions
748 \brief Function that provides FPU type.
754 \details returns the FPU type
757 - \b 1: Single precision FPU
758 - \b 2: Double + Single precision FPU
760 __STATIC_INLINE uint32_t SCB_GetFPUType(void)
762 return 0U; /* No FPU */
766 /*@} end of CMSIS_Core_FpuFunctions */
770 /* ################################## SysTick function ############################################ */
772 \ingroup CMSIS_Core_FunctionInterface
773 \defgroup CMSIS_Core_SysTickFunctions SysTick Functions
774 \brief Functions that configure the System.
778 #if defined (__Vendor_SysTickConfig) && (__Vendor_SysTickConfig == 0U)
781 \brief System Tick Configuration
782 \details Initializes the System Timer and its interrupt, and starts the System Tick Timer.
783 Counter is in free running mode to generate periodic interrupts.
784 \param [in] ticks Number of ticks between two interrupts.
785 \return 0 Function succeeded.
786 \return 1 Function failed.
787 \note When the variable <b>__Vendor_SysTickConfig</b> is set to 1, then the
788 function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b>
789 must contain a vendor-specific implementation of this function.
791 __STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
793 if ((ticks - 1UL) > SysTick_LOAD_RELOAD_Msk)
795 return (1UL); /* Reload value impossible */
798 SysTick->LOAD = (uint32_t)(ticks - 1UL); /* set reload register */
799 NVIC_SetPriority (SysTick_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL); /* set Priority for Systick Interrupt */
800 SysTick->VAL = 0UL; /* Load the SysTick Counter Value */
801 SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
802 SysTick_CTRL_TICKINT_Msk |
803 SysTick_CTRL_ENABLE_Msk; /* Enable SysTick IRQ and SysTick Timer */
804 return (0UL); /* Function successful */
809 /*@} end of CMSIS_Core_SysTickFunctions */
818 #endif /* __CORE_CM0_H_DEPENDANT */
820 #endif /* __CMSIS_GENERIC */