1 /**************************************************************************//**
2 * @file core_cm0plus.h
3 * @brief CMSIS Cortex-M0+ Core Peripheral Access Layer Header File
4 * @version V5.0.9
5 * @date 21. August 2019
6 ******************************************************************************/
7 /*
8 * Copyright (c) 2009-2019 Arm Limited. All rights reserved.
9 *
10 * SPDX-License-Identifier: Apache-2.0
11 *
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
15 *
16 * www.apache.org/licenses/LICENSE-2.0
17 *
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.
23 */
24
25 #if defined ( __ICCARM__ )
26 #pragma system_include /* treat file as system include file for MISRA check */
27 #elif defined (__clang__)
28 #pragma clang system_header /* treat file as system include file */
29 #endif
30
31 #ifndef __CORE_CM0PLUS_H_GENERIC
32 #define __CORE_CM0PLUS_H_GENERIC
33
34 #include <stdint.h>
35
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39
40 /**
41 \page CMSIS_MISRA_Exceptions MISRA-C:2004 Compliance Exceptions
42 CMSIS violates the following MISRA-C:2004 rules:
43
44 \li Required Rule 8.5, object/function definition in header file.<br>
45 Function definitions in header files are used to allow 'inlining'.
46
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.
49
50 \li Advisory Rule 19.7, Function-like macro defined.<br>
51 Function-like macros are used to allow more efficient code.
52 */
53
54
55 /*******************************************************************************
56 * CMSIS definitions
57 ******************************************************************************/
58 /**
59 \ingroup Cortex-M0+
60 @{
61 */
62
63 #include "cmsis_version.h"
64
65 /* CMSIS CM0+ definitions */
66 #define __CM0PLUS_CMSIS_VERSION_MAIN (__CM_CMSIS_VERSION_MAIN) /*!< \deprecated [31:16] CMSIS HAL main version */
67 #define __CM0PLUS_CMSIS_VERSION_SUB (__CM_CMSIS_VERSION_SUB) /*!< \deprecated [15:0] CMSIS HAL sub version */
68 #define __CM0PLUS_CMSIS_VERSION ((__CM0PLUS_CMSIS_VERSION_MAIN << 16U) | \
69 __CM0PLUS_CMSIS_VERSION_SUB ) /*!< \deprecated CMSIS HAL version number */
70
71 #define __CORTEX_M (0U) /*!< Cortex-M Core */
72
73 /** __FPU_USED indicates whether an FPU is used or not.
74 This core does not support an FPU at all
75 */
76 #define __FPU_USED 0U
77
78 #if defined ( __CC_ARM )
79 #if defined __TARGET_FPU_VFP
80 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
81 #endif
82
83 #elif defined (__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
84 #if defined __ARM_FP
85 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
86 #endif
87
88 #elif defined ( __GNUC__ )
89 #if defined (__VFP_FP__) && !defined(__SOFTFP__)
90 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
91 #endif
92
93 #elif defined ( __ICCARM__ )
94 #if defined __ARMVFP__
95 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
96 #endif
97
98 #elif defined ( __TI_ARM__ )
99 #if defined __TI_VFP_SUPPORT__
100 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
101 #endif
102
103 #elif defined ( __TASKING__ )
104 #if defined __FPU_VFP__
105 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
106 #endif
107
108 #elif defined ( __CSMC__ )
109 #if ( __CSMC__ & 0x400U)
110 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
111 #endif
112
113 #endif
114
115 #include "cmsis_compiler.h" /* CMSIS compiler specific defines */
116
117
118 #ifdef __cplusplus
119 }
120 #endif
121
122 #endif /* __CORE_CM0PLUS_H_GENERIC */
123
124 #ifndef __CMSIS_GENERIC
125
126 #ifndef __CORE_CM0PLUS_H_DEPENDANT
127 #define __CORE_CM0PLUS_H_DEPENDANT
128
129 #ifdef __cplusplus
130 extern "C" {
131 #endif
132
133 /* check device defines and use defaults */
134 #if defined __CHECK_DEVICE_DEFINES
135 #ifndef __CM0PLUS_REV
136 #define __CM0PLUS_REV 0x0000U
137 #warning "__CM0PLUS_REV not defined in device header file; using default!"
138 #endif
139
140 #ifndef __MPU_PRESENT
141 #define __MPU_PRESENT 0U
142 #warning "__MPU_PRESENT not defined in device header file; using default!"
143 #endif
144
145 #ifndef __VTOR_PRESENT
146 #define __VTOR_PRESENT 0U
147 #warning "__VTOR_PRESENT not defined in device header file; using default!"
148 #endif
149
150 #ifndef __NVIC_PRIO_BITS
151 #define __NVIC_PRIO_BITS 2U
152 #warning "__NVIC_PRIO_BITS not defined in device header file; using default!"
153 #endif
154
155 #ifndef __Vendor_SysTickConfig
156 #define __Vendor_SysTickConfig 0U
157 #warning "__Vendor_SysTickConfig not defined in device header file; using default!"
158 #endif
159 #endif
160
161 /* IO definitions (access restrictions to peripheral registers) */
162 /**
163 \defgroup CMSIS_glob_defs CMSIS Global Defines
164
165 <strong>IO Type Qualifiers</strong> are used
166 \li to specify the access to peripheral variables.
167 \li for automatic generation of peripheral register debug information.
168 */
169 #ifdef __cplusplus
170 #define __I volatile /*!< Defines 'read only' permissions */
171 #else
172 #define __I volatile const /*!< Defines 'read only' permissions */
173 #endif
174 #define __O volatile /*!< Defines 'write only' permissions */
175 #define __IO volatile /*!< Defines 'read / write' permissions */
176
177 /* following defines should be used for structure members */
178 #define __IM volatile const /*! Defines 'read only' structure member permissions */
179 #define __OM volatile /*! Defines 'write only' structure member permissions */
180 #define __IOM volatile /*! Defines 'read / write' structure member permissions */
181
182 /*@} end of group Cortex-M0+ */
183
184
185
186 /*******************************************************************************
187 * Register Abstraction
188 Core Register contain:
189 - Core Register
190 - Core NVIC Register
191 - Core SCB Register
192 - Core SysTick Register
193 - Core MPU Register
194 ******************************************************************************/
195 /**
196 \defgroup CMSIS_core_register Defines and Type Definitions
197 \brief Type definitions and defines for Cortex-M processor based devices.
198 */
199
200 /**
201 \ingroup CMSIS_core_register
202 \defgroup CMSIS_CORE Status and Control Registers
203 \brief Core Register type definitions.
204 @{
205 */
206
207 /**
208 \brief Union type to access the Application Program Status Register (APSR).
209 */
210 typedef union
211 {
212 struct
213 {
214 uint32_t _reserved0:28; /*!< bit: 0..27 Reserved */
215 uint32_t V:1; /*!< bit: 28 Overflow condition code flag */
216 uint32_t C:1; /*!< bit: 29 Carry condition code flag */
217 uint32_t Z:1; /*!< bit: 30 Zero condition code flag */
218 uint32_t N:1; /*!< bit: 31 Negative condition code flag */
219 } b; /*!< Structure used for bit access */
220 uint32_t w; /*!< Type used for word access */
221 } APSR_Type;
222
223 /* APSR Register Definitions */
224 #define APSR_N_Pos 31U /*!< APSR: N Position */
225 #define APSR_N_Msk (1UL << APSR_N_Pos) /*!< APSR: N Mask */
226
227 #define APSR_Z_Pos 30U /*!< APSR: Z Position */
228 #define APSR_Z_Msk (1UL << APSR_Z_Pos) /*!< APSR: Z Mask */
229
230 #define APSR_C_Pos 29U /*!< APSR: C Position */
231 #define APSR_C_Msk (1UL << APSR_C_Pos) /*!< APSR: C Mask */
232
233 #define APSR_V_Pos 28U /*!< APSR: V Position */
234 #define APSR_V_Msk (1UL << APSR_V_Pos) /*!< APSR: V Mask */
235
236
237 /**
238 \brief Union type to access the Interrupt Program Status Register (IPSR).
239 */
240 typedef union
241 {
242 struct
243 {
244 uint32_t ISR:9; /*!< bit: 0.. 8 Exception number */
245 uint32_t _reserved0:23; /*!< bit: 9..31 Reserved */
246 } b; /*!< Structure used for bit access */
247 uint32_t w; /*!< Type used for word access */
248 } IPSR_Type;
249
250 /* IPSR Register Definitions */
251 #define IPSR_ISR_Pos 0U /*!< IPSR: ISR Position */
252 #define IPSR_ISR_Msk (0x1FFUL /*<< IPSR_ISR_Pos*/) /*!< IPSR: ISR Mask */
253
254
255 /**
256 \brief Union type to access the Special-Purpose Program Status Registers (xPSR).
257 */
258 typedef union
259 {
260 struct
261 {
262 uint32_t ISR:9; /*!< bit: 0.. 8 Exception number */
263 uint32_t _reserved0:15; /*!< bit: 9..23 Reserved */
264 uint32_t T:1; /*!< bit: 24 Thumb bit (read 0) */
265 uint32_t _reserved1:3; /*!< bit: 25..27 Reserved */
266 uint32_t V:1; /*!< bit: 28 Overflow condition code flag */
267 uint32_t C:1; /*!< bit: 29 Carry condition code flag */
268 uint32_t Z:1; /*!< bit: 30 Zero condition code flag */
269 uint32_t N:1; /*!< bit: 31 Negative condition code flag */
270 } b; /*!< Structure used for bit access */
271 uint32_t w; /*!< Type used for word access */
272 } xPSR_Type;
273
274 /* xPSR Register Definitions */
275 #define xPSR_N_Pos 31U /*!< xPSR: N Position */
276 #define xPSR_N_Msk (1UL << xPSR_N_Pos) /*!< xPSR: N Mask */
277
278 #define xPSR_Z_Pos 30U /*!< xPSR: Z Position */
279 #define xPSR_Z_Msk (1UL << xPSR_Z_Pos) /*!< xPSR: Z Mask */
280
281 #define xPSR_C_Pos 29U /*!< xPSR: C Position */
282 #define xPSR_C_Msk (1UL << xPSR_C_Pos) /*!< xPSR: C Mask */
283
284 #define xPSR_V_Pos 28U /*!< xPSR: V Position */
285 #define xPSR_V_Msk (1UL << xPSR_V_Pos) /*!< xPSR: V Mask */
286
287 #define xPSR_T_Pos 24U /*!< xPSR: T Position */
288 #define xPSR_T_Msk (1UL << xPSR_T_Pos) /*!< xPSR: T Mask */
289
290 #define xPSR_ISR_Pos 0U /*!< xPSR: ISR Position */
291 #define xPSR_ISR_Msk (0x1FFUL /*<< xPSR_ISR_Pos*/) /*!< xPSR: ISR Mask */
292
293
294 /**
295 \brief Union type to access the Control Registers (CONTROL).
296 */
297 typedef union
298 {
299 struct
300 {
301 uint32_t nPRIV:1; /*!< bit: 0 Execution privilege in Thread mode */
302 uint32_t SPSEL:1; /*!< bit: 1 Stack to be used */
303 uint32_t _reserved1:30; /*!< bit: 2..31 Reserved */
304 } b; /*!< Structure used for bit access */
305 uint32_t w; /*!< Type used for word access */
306 } CONTROL_Type;
307
308 /* CONTROL Register Definitions */
309 #define CONTROL_SPSEL_Pos 1U /*!< CONTROL: SPSEL Position */
310 #define CONTROL_SPSEL_Msk (1UL << CONTROL_SPSEL_Pos) /*!< CONTROL: SPSEL Mask */
311
312 #define CONTROL_nPRIV_Pos 0U /*!< CONTROL: nPRIV Position */
313 #define CONTROL_nPRIV_Msk (1UL /*<< CONTROL_nPRIV_Pos*/) /*!< CONTROL: nPRIV Mask */
314
315 /*@} end of group CMSIS_CORE */
316
317
318 /**
319 \ingroup CMSIS_core_register
320 \defgroup CMSIS_NVIC Nested Vectored Interrupt Controller (NVIC)
321 \brief Type definitions for the NVIC Registers
322 @{
323 */
324
325 /**
326 \brief Structure type to access the Nested Vectored Interrupt Controller (NVIC).
327 */
328 typedef struct
329 {
330 __IOM uint32_t ISER[1U]; /*!< Offset: 0x000 (R/W) Interrupt Set Enable Register */
331 uint32_t RESERVED0[31U];
332 __IOM uint32_t ICER[1U]; /*!< Offset: 0x080 (R/W) Interrupt Clear Enable Register */
333 uint32_t RESERVED1[31U];
334 __IOM uint32_t ISPR[1U]; /*!< Offset: 0x100 (R/W) Interrupt Set Pending Register */
335 uint32_t RESERVED2[31U];
336 __IOM uint32_t ICPR[1U]; /*!< Offset: 0x180 (R/W) Interrupt Clear Pending Register */
337 uint32_t RESERVED3[31U];
338 uint32_t RESERVED4[64U];
339 __IOM uint32_t IP[8U]; /*!< Offset: 0x300 (R/W) Interrupt Priority Register */
340 } NVIC_Type;
341
342 /*@} end of group CMSIS_NVIC */
343
344
345 /**
346 \ingroup CMSIS_core_register
347 \defgroup CMSIS_SCB System Control Block (SCB)
348 \brief Type definitions for the System Control Block Registers
349 @{
350 */
351
352 /**
353 \brief Structure type to access the System Control Block (SCB).
354 */
355 typedef struct
356 {
357 __IM uint32_t CPUID; /*!< Offset: 0x000 (R/ ) CPUID Base Register */
358 __IOM uint32_t ICSR; /*!< Offset: 0x004 (R/W) Interrupt Control and State Register */
359 #if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
360 __IOM uint32_t VTOR; /*!< Offset: 0x008 (R/W) Vector Table Offset Register */
361 #else
362 uint32_t RESERVED0;
363 #endif
364 __IOM uint32_t AIRCR; /*!< Offset: 0x00C (R/W) Application Interrupt and Reset Control Register */
365 __IOM uint32_t SCR; /*!< Offset: 0x010 (R/W) System Control Register */
366 __IOM uint32_t CCR; /*!< Offset: 0x014 (R/W) Configuration Control Register */
367 uint32_t RESERVED1;
368 __IOM uint32_t SHP[2U]; /*!< Offset: 0x01C (R/W) System Handlers Priority Registers. [0] is RESERVED */
369 __IOM uint32_t SHCSR; /*!< Offset: 0x024 (R/W) System Handler Control and State Register */
370 } SCB_Type;
371
372 /* SCB CPUID Register Definitions */
373 #define SCB_CPUID_IMPLEMENTER_Pos 24U /*!< SCB CPUID: IMPLEMENTER Position */
374 #define SCB_CPUID_IMPLEMENTER_Msk (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos) /*!< SCB CPUID: IMPLEMENTER Mask */
375
376 #define SCB_CPUID_VARIANT_Pos 20U /*!< SCB CPUID: VARIANT Position */
377 #define SCB_CPUID_VARIANT_Msk (0xFUL << SCB_CPUID_VARIANT_Pos) /*!< SCB CPUID: VARIANT Mask */
378
379 #define SCB_CPUID_ARCHITECTURE_Pos 16U /*!< SCB CPUID: ARCHITECTURE Position */
380 #define SCB_CPUID_ARCHITECTURE_Msk (0xFUL << SCB_CPUID_ARCHITECTURE_Pos) /*!< SCB CPUID: ARCHITECTURE Mask */
381
382 #define SCB_CPUID_PARTNO_Pos 4U /*!< SCB CPUID: PARTNO Position */
383 #define SCB_CPUID_PARTNO_Msk (0xFFFUL << SCB_CPUID_PARTNO_Pos) /*!< SCB CPUID: PARTNO Mask */
384
385 #define SCB_CPUID_REVISION_Pos 0U /*!< SCB CPUID: REVISION Position */
386 #define SCB_CPUID_REVISION_Msk (0xFUL /*<< SCB_CPUID_REVISION_Pos*/) /*!< SCB CPUID: REVISION Mask */
387
388 /* SCB Interrupt Control State Register Definitions */
389 #define SCB_ICSR_NMIPENDSET_Pos 31U /*!< SCB ICSR: NMIPENDSET Position */
390 #define SCB_ICSR_NMIPENDSET_Msk (1UL << SCB_ICSR_NMIPENDSET_Pos) /*!< SCB ICSR: NMIPENDSET Mask */
391
392 #define SCB_ICSR_PENDSVSET_Pos 28U /*!< SCB ICSR: PENDSVSET Position */
393 #define SCB_ICSR_PENDSVSET_Msk (1UL << SCB_ICSR_PENDSVSET_Pos) /*!< SCB ICSR: PENDSVSET Mask */
394
395 #define SCB_ICSR_PENDSVCLR_Pos 27U /*!< SCB ICSR: PENDSVCLR Position */
396 #define SCB_ICSR_PENDSVCLR_Msk (1UL << SCB_ICSR_PENDSVCLR_Pos) /*!< SCB ICSR: PENDSVCLR Mask */
397
398 #define SCB_ICSR_PENDSTSET_Pos 26U /*!< SCB ICSR: PENDSTSET Position */
399 #define SCB_ICSR_PENDSTSET_Msk (1UL << SCB_ICSR_PENDSTSET_Pos) /*!< SCB ICSR: PENDSTSET Mask */
400
401 #define SCB_ICSR_PENDSTCLR_Pos 25U /*!< SCB ICSR: PENDSTCLR Position */
402 #define SCB_ICSR_PENDSTCLR_Msk (1UL << SCB_ICSR_PENDSTCLR_Pos) /*!< SCB ICSR: PENDSTCLR Mask */
403
404 #define SCB_ICSR_ISRPREEMPT_Pos 23U /*!< SCB ICSR: ISRPREEMPT Position */
405 #define SCB_ICSR_ISRPREEMPT_Msk (1UL << SCB_ICSR_ISRPREEMPT_Pos) /*!< SCB ICSR: ISRPREEMPT Mask */
406
407 #define SCB_ICSR_ISRPENDING_Pos 22U /*!< SCB ICSR: ISRPENDING Position */
408 #define SCB_ICSR_ISRPENDING_Msk (1UL << SCB_ICSR_ISRPENDING_Pos) /*!< SCB ICSR: ISRPENDING Mask */
409
410 #define SCB_ICSR_VECTPENDING_Pos 12U /*!< SCB ICSR: VECTPENDING Position */
411 #define SCB_ICSR_VECTPENDING_Msk (0x1FFUL << SCB_ICSR_VECTPENDING_Pos) /*!< SCB ICSR: VECTPENDING Mask */
412
413 #define SCB_ICSR_VECTACTIVE_Pos 0U /*!< SCB ICSR: VECTACTIVE Position */
414 #define SCB_ICSR_VECTACTIVE_Msk (0x1FFUL /*<< SCB_ICSR_VECTACTIVE_Pos*/) /*!< SCB ICSR: VECTACTIVE Mask */
415
416 #if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
417 /* SCB Interrupt Control State Register Definitions */
418 #define SCB_VTOR_TBLOFF_Pos 8U /*!< SCB VTOR: TBLOFF Position */
419 #define SCB_VTOR_TBLOFF_Msk (0xFFFFFFUL << SCB_VTOR_TBLOFF_Pos) /*!< SCB VTOR: TBLOFF Mask */
420 #endif
421
422 /* SCB Application Interrupt and Reset Control Register Definitions */
423 #define SCB_AIRCR_VECTKEY_Pos 16U /*!< SCB AIRCR: VECTKEY Position */
424 #define SCB_AIRCR_VECTKEY_Msk (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos) /*!< SCB AIRCR: VECTKEY Mask */
425
426 #define SCB_AIRCR_VECTKEYSTAT_Pos 16U /*!< SCB AIRCR: VECTKEYSTAT Position */
427 #define SCB_AIRCR_VECTKEYSTAT_Msk (0xFFFFUL << SCB_AIRCR_VECTKEYSTAT_Pos) /*!< SCB AIRCR: VECTKEYSTAT Mask */
428
429 #define SCB_AIRCR_ENDIANESS_Pos 15U /*!< SCB AIRCR: ENDIANESS Position */
430 #define SCB_AIRCR_ENDIANESS_Msk (1UL << SCB_AIRCR_ENDIANESS_Pos) /*!< SCB AIRCR: ENDIANESS Mask */
431
432 #define SCB_AIRCR_SYSRESETREQ_Pos 2U /*!< SCB AIRCR: SYSRESETREQ Position */
433 #define SCB_AIRCR_SYSRESETREQ_Msk (1UL << SCB_AIRCR_SYSRESETREQ_Pos) /*!< SCB AIRCR: SYSRESETREQ Mask */
434
435 #define SCB_AIRCR_VECTCLRACTIVE_Pos 1U /*!< SCB AIRCR: VECTCLRACTIVE Position */
436 #define SCB_AIRCR_VECTCLRACTIVE_Msk (1UL << SCB_AIRCR_VECTCLRACTIVE_Pos) /*!< SCB AIRCR: VECTCLRACTIVE Mask */
437
438 /* SCB System Control Register Definitions */
439 #define SCB_SCR_SEVONPEND_Pos 4U /*!< SCB SCR: SEVONPEND Position */
440 #define SCB_SCR_SEVONPEND_Msk (1UL << SCB_SCR_SEVONPEND_Pos) /*!< SCB SCR: SEVONPEND Mask */
441
442 #define SCB_SCR_SLEEPDEEP_Pos 2U /*!< SCB SCR: SLEEPDEEP Position */
443 #define SCB_SCR_SLEEPDEEP_Msk (1UL << SCB_SCR_SLEEPDEEP_Pos) /*!< SCB SCR: SLEEPDEEP Mask */
444
445 #define SCB_SCR_SLEEPONEXIT_Pos 1U /*!< SCB SCR: SLEEPONEXIT Position */
446 #define SCB_SCR_SLEEPONEXIT_Msk (1UL << SCB_SCR_SLEEPONEXIT_Pos) /*!< SCB SCR: SLEEPONEXIT Mask */
447
448 /* SCB Configuration Control Register Definitions */
449 #define SCB_CCR_STKALIGN_Pos 9U /*!< SCB CCR: STKALIGN Position */
450 #define SCB_CCR_STKALIGN_Msk (1UL << SCB_CCR_STKALIGN_Pos) /*!< SCB CCR: STKALIGN Mask */
451
452 #define SCB_CCR_UNALIGN_TRP_Pos 3U /*!< SCB CCR: UNALIGN_TRP Position */
453 #define SCB_CCR_UNALIGN_TRP_Msk (1UL << SCB_CCR_UNALIGN_TRP_Pos) /*!< SCB CCR: UNALIGN_TRP Mask */
454
455 /* SCB System Handler Control and State Register Definitions */
456 #define SCB_SHCSR_SVCALLPENDED_Pos 15U /*!< SCB SHCSR: SVCALLPENDED Position */
457 #define SCB_SHCSR_SVCALLPENDED_Msk (1UL << SCB_SHCSR_SVCALLPENDED_Pos) /*!< SCB SHCSR: SVCALLPENDED Mask */
458
459 /*@} end of group CMSIS_SCB */
460
461
462 /**
463 \ingroup CMSIS_core_register
464 \defgroup CMSIS_SysTick System Tick Timer (SysTick)
465 \brief Type definitions for the System Timer Registers.
466 @{
467 */
468
469 /**
470 \brief Structure type to access the System Timer (SysTick).
471 */
472 typedef struct
473 {
474 __IOM uint32_t CTRL; /*!< Offset: 0x000 (R/W) SysTick Control and Status Register */
475 __IOM uint32_t LOAD; /*!< Offset: 0x004 (R/W) SysTick Reload Value Register */
476 __IOM uint32_t VAL; /*!< Offset: 0x008 (R/W) SysTick Current Value Register */
477 __IM uint32_t CALIB; /*!< Offset: 0x00C (R/ ) SysTick Calibration Register */
478 } SysTick_Type;
479
480 /* SysTick Control / Status Register Definitions */
481 #define SysTick_CTRL_COUNTFLAG_Pos 16U /*!< SysTick CTRL: COUNTFLAG Position */
482 #define SysTick_CTRL_COUNTFLAG_Msk (1UL << SysTick_CTRL_COUNTFLAG_Pos) /*!< SysTick CTRL: COUNTFLAG Mask */
483
484 #define SysTick_CTRL_CLKSOURCE_Pos 2U /*!< SysTick CTRL: CLKSOURCE Position */
485 #define SysTick_CTRL_CLKSOURCE_Msk (1UL << SysTick_CTRL_CLKSOURCE_Pos) /*!< SysTick CTRL: CLKSOURCE Mask */
486
487 #define SysTick_CTRL_TICKINT_Pos 1U /*!< SysTick CTRL: TICKINT Position */
488 #define SysTick_CTRL_TICKINT_Msk (1UL << SysTick_CTRL_TICKINT_Pos) /*!< SysTick CTRL: TICKINT Mask */
489
490 #define SysTick_CTRL_ENABLE_Pos 0U /*!< SysTick CTRL: ENABLE Position */
491 #define SysTick_CTRL_ENABLE_Msk (1UL /*<< SysTick_CTRL_ENABLE_Pos*/) /*!< SysTick CTRL: ENABLE Mask */
492
493 /* SysTick Reload Register Definitions */
494 #define SysTick_LOAD_RELOAD_Pos 0U /*!< SysTick LOAD: RELOAD Position */
495 #define SysTick_LOAD_RELOAD_Msk (0xFFFFFFUL /*<< SysTick_LOAD_RELOAD_Pos*/) /*!< SysTick LOAD: RELOAD Mask */
496
497 /* SysTick Current Register Definitions */
498 #define SysTick_VAL_CURRENT_Pos 0U /*!< SysTick VAL: CURRENT Position */
499 #define SysTick_VAL_CURRENT_Msk (0xFFFFFFUL /*<< SysTick_VAL_CURRENT_Pos*/) /*!< SysTick VAL: CURRENT Mask */
500
501 /* SysTick Calibration Register Definitions */
502 #define SysTick_CALIB_NOREF_Pos 31U /*!< SysTick CALIB: NOREF Position */
503 #define SysTick_CALIB_NOREF_Msk (1UL << SysTick_CALIB_NOREF_Pos) /*!< SysTick CALIB: NOREF Mask */
504
505 #define SysTick_CALIB_SKEW_Pos 30U /*!< SysTick CALIB: SKEW Position */
506 #define SysTick_CALIB_SKEW_Msk (1UL << SysTick_CALIB_SKEW_Pos) /*!< SysTick CALIB: SKEW Mask */
507
508 #define SysTick_CALIB_TENMS_Pos 0U /*!< SysTick CALIB: TENMS Position */
509 #define SysTick_CALIB_TENMS_Msk (0xFFFFFFUL /*<< SysTick_CALIB_TENMS_Pos*/) /*!< SysTick CALIB: TENMS Mask */
510
511 /*@} end of group CMSIS_SysTick */
512
513 #if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1U)
514 /**
515 \ingroup CMSIS_core_register
516 \defgroup CMSIS_MPU Memory Protection Unit (MPU)
517 \brief Type definitions for the Memory Protection Unit (MPU)
518 @{
519 */
520
521 /**
522 \brief Structure type to access the Memory Protection Unit (MPU).
523 */
524 typedef struct
525 {
526 __IM uint32_t TYPE; /*!< Offset: 0x000 (R/ ) MPU Type Register */
527 __IOM uint32_t CTRL; /*!< Offset: 0x004 (R/W) MPU Control Register */
528 __IOM uint32_t RNR; /*!< Offset: 0x008 (R/W) MPU Region RNRber Register */
529 __IOM uint32_t RBAR; /*!< Offset: 0x00C (R/W) MPU Region Base Address Register */
530 __IOM uint32_t RASR; /*!< Offset: 0x010 (R/W) MPU Region Attribute and Size Register */
531 } MPU_Type;
532
533 #define MPU_TYPE_RALIASES 1U
534
535 /* MPU Type Register Definitions */
536 #define MPU_TYPE_IREGION_Pos 16U /*!< MPU TYPE: IREGION Position */
537 #define MPU_TYPE_IREGION_Msk (0xFFUL << MPU_TYPE_IREGION_Pos) /*!< MPU TYPE: IREGION Mask */
538
539 #define MPU_TYPE_DREGION_Pos 8U /*!< MPU TYPE: DREGION Position */
540 #define MPU_TYPE_DREGION_Msk (0xFFUL << MPU_TYPE_DREGION_Pos) /*!< MPU TYPE: DREGION Mask */
541
542 #define MPU_TYPE_SEPARATE_Pos 0U /*!< MPU TYPE: SEPARATE Position */
543 #define MPU_TYPE_SEPARATE_Msk (1UL /*<< MPU_TYPE_SEPARATE_Pos*/) /*!< MPU TYPE: SEPARATE Mask */
544
545 /* MPU Control Register Definitions */
546 #define MPU_CTRL_PRIVDEFENA_Pos 2U /*!< MPU CTRL: PRIVDEFENA Position */
547 #define MPU_CTRL_PRIVDEFENA_Msk (1UL << MPU_CTRL_PRIVDEFENA_Pos) /*!< MPU CTRL: PRIVDEFENA Mask */
548
549 #define MPU_CTRL_HFNMIENA_Pos 1U /*!< MPU CTRL: HFNMIENA Position */
550 #define MPU_CTRL_HFNMIENA_Msk (1UL << MPU_CTRL_HFNMIENA_Pos) /*!< MPU CTRL: HFNMIENA Mask */
551
552 #define MPU_CTRL_ENABLE_Pos 0U /*!< MPU CTRL: ENABLE Position */
553 #define MPU_CTRL_ENABLE_Msk (1UL /*<< MPU_CTRL_ENABLE_Pos*/) /*!< MPU CTRL: ENABLE Mask */
554
555 /* MPU Region Number Register Definitions */
556 #define MPU_RNR_REGION_Pos 0U /*!< MPU RNR: REGION Position */
557 #define MPU_RNR_REGION_Msk (0xFFUL /*<< MPU_RNR_REGION_Pos*/) /*!< MPU RNR: REGION Mask */
558
559 /* MPU Region Base Address Register Definitions */
560 #define MPU_RBAR_ADDR_Pos 8U /*!< MPU RBAR: ADDR Position */
561 #define MPU_RBAR_ADDR_Msk (0xFFFFFFUL << MPU_RBAR_ADDR_Pos) /*!< MPU RBAR: ADDR Mask */
562
563 #define MPU_RBAR_VALID_Pos 4U /*!< MPU RBAR: VALID Position */
564 #define MPU_RBAR_VALID_Msk (1UL << MPU_RBAR_VALID_Pos) /*!< MPU RBAR: VALID Mask */
565
566 #define MPU_RBAR_REGION_Pos 0U /*!< MPU RBAR: REGION Position */
567 #define MPU_RBAR_REGION_Msk (0xFUL /*<< MPU_RBAR_REGION_Pos*/) /*!< MPU RBAR: REGION Mask */
568
569 /* MPU Region Attribute and Size Register Definitions */
570 #define MPU_RASR_ATTRS_Pos 16U /*!< MPU RASR: MPU Region Attribute field Position */
571 #define MPU_RASR_ATTRS_Msk (0xFFFFUL << MPU_RASR_ATTRS_Pos) /*!< MPU RASR: MPU Region Attribute field Mask */
572
573 #define MPU_RASR_XN_Pos 28U /*!< MPU RASR: ATTRS.XN Position */
574 #define MPU_RASR_XN_Msk (1UL << MPU_RASR_XN_Pos) /*!< MPU RASR: ATTRS.XN Mask */
575
576 #define MPU_RASR_AP_Pos 24U /*!< MPU RASR: ATTRS.AP Position */
577 #define MPU_RASR_AP_Msk (0x7UL << MPU_RASR_AP_Pos) /*!< MPU RASR: ATTRS.AP Mask */
578
579 #define MPU_RASR_TEX_Pos 19U /*!< MPU RASR: ATTRS.TEX Position */
580 #define MPU_RASR_TEX_Msk (0x7UL << MPU_RASR_TEX_Pos) /*!< MPU RASR: ATTRS.TEX Mask */
581
582 #define MPU_RASR_S_Pos 18U /*!< MPU RASR: ATTRS.S Position */
583 #define MPU_RASR_S_Msk (1UL << MPU_RASR_S_Pos) /*!< MPU RASR: ATTRS.S Mask */
584
585 #define MPU_RASR_C_Pos 17U /*!< MPU RASR: ATTRS.C Position */
586 #define MPU_RASR_C_Msk (1UL << MPU_RASR_C_Pos) /*!< MPU RASR: ATTRS.C Mask */
587
588 #define MPU_RASR_B_Pos 16U /*!< MPU RASR: ATTRS.B Position */
589 #define MPU_RASR_B_Msk (1UL << MPU_RASR_B_Pos) /*!< MPU RASR: ATTRS.B Mask */
590
591 #define MPU_RASR_SRD_Pos 8U /*!< MPU RASR: Sub-Region Disable Position */
592 #define MPU_RASR_SRD_Msk (0xFFUL << MPU_RASR_SRD_Pos) /*!< MPU RASR: Sub-Region Disable Mask */
593
594 #define MPU_RASR_SIZE_Pos 1U /*!< MPU RASR: Region Size Field Position */
595 #define MPU_RASR_SIZE_Msk (0x1FUL << MPU_RASR_SIZE_Pos) /*!< MPU RASR: Region Size Field Mask */
596
597 #define MPU_RASR_ENABLE_Pos 0U /*!< MPU RASR: Region enable bit Position */
598 #define MPU_RASR_ENABLE_Msk (1UL /*<< MPU_RASR_ENABLE_Pos*/) /*!< MPU RASR: Region enable bit Disable Mask */
599
600 /*@} end of group CMSIS_MPU */
601 #endif
602
603
604 /**
605 \ingroup CMSIS_core_register
606 \defgroup CMSIS_CoreDebug Core Debug Registers (CoreDebug)
607 \brief Cortex-M0+ Core Debug Registers (DCB registers, SHCSR, and DFSR) are only accessible over DAP and not via processor.
608 Therefore they are not covered by the Cortex-M0+ header file.
609 @{
610 */
611 /*@} end of group CMSIS_CoreDebug */
612
613
614 /**
615 \ingroup CMSIS_core_register
616 \defgroup CMSIS_core_bitfield Core register bit field macros
617 \brief Macros for use with bit field definitions (xxx_Pos, xxx_Msk).
618 @{
619 */
620
621 /**
622 \brief Mask and shift a bit field value for use in a register bit range.
623 \param[in] field Name of the register bit field.
624 \param[in] value Value of the bit field. This parameter is interpreted as an uint32_t type.
625 \return Masked and shifted value.
626 */
627 #define _VAL2FLD(field, value) (((uint32_t)(value) << field ## _Pos) & field ## _Msk)
628
629 /**
630 \brief Mask and shift a register value to extract a bit filed value.
631 \param[in] field Name of the register bit field.
632 \param[in] value Value of register. This parameter is interpreted as an uint32_t type.
633 \return Masked and shifted bit field value.
634 */
635 #define _FLD2VAL(field, value) (((uint32_t)(value) & field ## _Msk) >> field ## _Pos)
636
637 /*@} end of group CMSIS_core_bitfield */
638
639
640 /**
641 \ingroup CMSIS_core_register
642 \defgroup CMSIS_core_base Core Definitions
643 \brief Definitions for base addresses, unions, and structures.
644 @{
645 */
646
647 /* Memory mapping of Core Hardware */
648 #define SCS_BASE (0xE000E000UL) /*!< System Control Space Base Address */
649 #define SysTick_BASE (SCS_BASE + 0x0010UL) /*!< SysTick Base Address */
650 #define NVIC_BASE (SCS_BASE + 0x0100UL) /*!< NVIC Base Address */
651 #define SCB_BASE (SCS_BASE + 0x0D00UL) /*!< System Control Block Base Address */
652
653 #define SCB ((SCB_Type *) SCB_BASE ) /*!< SCB configuration struct */
654 #define SysTick ((SysTick_Type *) SysTick_BASE ) /*!< SysTick configuration struct */
655 #define NVIC ((NVIC_Type *) NVIC_BASE ) /*!< NVIC configuration struct */
656
657 #if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1U)
658 #define MPU_BASE (SCS_BASE + 0x0D90UL) /*!< Memory Protection Unit */
659 #define MPU ((MPU_Type *) MPU_BASE ) /*!< Memory Protection Unit */
660 #endif
661
662 /*@} */
663
664
665
666 /*******************************************************************************
667 * Hardware Abstraction Layer
668 Core Function Interface contains:
669 - Core NVIC Functions
670 - Core SysTick Functions
671 - Core Register Access Functions
672 ******************************************************************************/
673 /**
674 \defgroup CMSIS_Core_FunctionInterface Functions and Instructions Reference
675 */
676
677
678
679 /* ########################## NVIC functions #################################### */
680 /**
681 \ingroup CMSIS_Core_FunctionInterface
682 \defgroup CMSIS_Core_NVICFunctions NVIC Functions
683 \brief Functions that manage interrupts and exceptions via the NVIC.
684 @{
685 */
686
687 #ifdef CMSIS_NVIC_VIRTUAL
688 #ifndef CMSIS_NVIC_VIRTUAL_HEADER_FILE
689 #define CMSIS_NVIC_VIRTUAL_HEADER_FILE "cmsis_nvic_virtual.h"
690 #endif
691 #include CMSIS_NVIC_VIRTUAL_HEADER_FILE
692 #else
693 #define NVIC_SetPriorityGrouping __NVIC_SetPriorityGrouping
694 #define NVIC_GetPriorityGrouping __NVIC_GetPriorityGrouping
695 #define NVIC_EnableIRQ __NVIC_EnableIRQ
696 #define NVIC_GetEnableIRQ __NVIC_GetEnableIRQ
697 #define NVIC_DisableIRQ __NVIC_DisableIRQ
698 #define NVIC_GetPendingIRQ __NVIC_GetPendingIRQ
699 #define NVIC_SetPendingIRQ __NVIC_SetPendingIRQ
700 #define NVIC_ClearPendingIRQ __NVIC_ClearPendingIRQ
701 /*#define NVIC_GetActive __NVIC_GetActive not available for Cortex-M0+ */
702 #define NVIC_SetPriority __NVIC_SetPriority
703 #define NVIC_GetPriority __NVIC_GetPriority
704 #define NVIC_SystemReset __NVIC_SystemReset
705 #endif /* CMSIS_NVIC_VIRTUAL */
706
707 #ifdef CMSIS_VECTAB_VIRTUAL
708 #ifndef CMSIS_VECTAB_VIRTUAL_HEADER_FILE
709 #define CMSIS_VECTAB_VIRTUAL_HEADER_FILE "cmsis_vectab_virtual.h"
710 #endif
711 #include CMSIS_VECTAB_VIRTUAL_HEADER_FILE
712 #else
713 #define NVIC_SetVector __NVIC_SetVector
714 #define NVIC_GetVector __NVIC_GetVector
715 #endif /* (CMSIS_VECTAB_VIRTUAL) */
716
717 #define NVIC_USER_IRQ_OFFSET 16
718
719
720 /* The following EXC_RETURN values are saved the LR on exception entry */
721 #define EXC_RETURN_HANDLER (0xFFFFFFF1UL) /* return to Handler mode, uses MSP after return */
722 #define EXC_RETURN_THREAD_MSP (0xFFFFFFF9UL) /* return to Thread mode, uses MSP after return */
723 #define EXC_RETURN_THREAD_PSP (0xFFFFFFFDUL) /* return to Thread mode, uses PSP after return */
724
725
726 /* Interrupt Priorities are WORD accessible only under Armv6-M */
727 /* The following MACROS handle generation of the register offset and byte masks */
728 #define _BIT_SHIFT(IRQn) ( ((((uint32_t)(int32_t)(IRQn)) ) & 0x03UL) * 8UL)
729 #define _SHP_IDX(IRQn) ( (((((uint32_t)(int32_t)(IRQn)) & 0x0FUL)-8UL) >> 2UL) )
730 #define _IP_IDX(IRQn) ( (((uint32_t)(int32_t)(IRQn)) >> 2UL) )
731
732 #define __NVIC_SetPriorityGrouping(X) (void)(X)
733 #define __NVIC_GetPriorityGrouping() (0U)
734
735 /**
736 \brief Enable Interrupt
737 \details Enables a device specific interrupt in the NVIC interrupt controller.
738 \param [in] IRQn Device specific interrupt number.
739 \note IRQn must not be negative.
740 */
__NVIC_EnableIRQ(IRQn_Type IRQn)741 __STATIC_INLINE void __NVIC_EnableIRQ(IRQn_Type IRQn)
742 {
743 if ((int32_t)(IRQn) >= 0)
744 {
745 __COMPILER_BARRIER();
746 NVIC->ISER[0U] = (uint32_t)(1UL << (((uint32_t)IRQn) & 0x1FUL));
747 __COMPILER_BARRIER();
748 }
749 }
750
751
752 /**
753 \brief Get Interrupt Enable status
754 \details Returns a device specific interrupt enable status from the NVIC interrupt controller.
755 \param [in] IRQn Device specific interrupt number.
756 \return 0 Interrupt is not enabled.
757 \return 1 Interrupt is enabled.
758 \note IRQn must not be negative.
759 */
__NVIC_GetEnableIRQ(IRQn_Type IRQn)760 __STATIC_INLINE uint32_t __NVIC_GetEnableIRQ(IRQn_Type IRQn)
761 {
762 if ((int32_t)(IRQn) >= 0)
763 {
764 return((uint32_t)(((NVIC->ISER[0U] & (1UL << (((uint32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
765 }
766 else
767 {
768 return(0U);
769 }
770 }
771
772
773 /**
774 \brief Disable Interrupt
775 \details Disables a device specific interrupt in the NVIC interrupt controller.
776 \param [in] IRQn Device specific interrupt number.
777 \note IRQn must not be negative.
778 */
__NVIC_DisableIRQ(IRQn_Type IRQn)779 __STATIC_INLINE void __NVIC_DisableIRQ(IRQn_Type IRQn)
780 {
781 if ((int32_t)(IRQn) >= 0)
782 {
783 NVIC->ICER[0U] = (uint32_t)(1UL << (((uint32_t)IRQn) & 0x1FUL));
784 __DSB();
785 __ISB();
786 }
787 }
788
789
790 /**
791 \brief Get Pending Interrupt
792 \details Reads the NVIC pending register and returns the pending bit for the specified device specific interrupt.
793 \param [in] IRQn Device specific interrupt number.
794 \return 0 Interrupt status is not pending.
795 \return 1 Interrupt status is pending.
796 \note IRQn must not be negative.
797 */
__NVIC_GetPendingIRQ(IRQn_Type IRQn)798 __STATIC_INLINE uint32_t __NVIC_GetPendingIRQ(IRQn_Type IRQn)
799 {
800 if ((int32_t)(IRQn) >= 0)
801 {
802 return((uint32_t)(((NVIC->ISPR[0U] & (1UL << (((uint32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
803 }
804 else
805 {
806 return(0U);
807 }
808 }
809
810
811 /**
812 \brief Set Pending Interrupt
813 \details Sets the pending bit of a device specific interrupt in the NVIC pending register.
814 \param [in] IRQn Device specific interrupt number.
815 \note IRQn must not be negative.
816 */
__NVIC_SetPendingIRQ(IRQn_Type IRQn)817 __STATIC_INLINE void __NVIC_SetPendingIRQ(IRQn_Type IRQn)
818 {
819 if ((int32_t)(IRQn) >= 0)
820 {
821 NVIC->ISPR[0U] = (uint32_t)(1UL << (((uint32_t)IRQn) & 0x1FUL));
822 }
823 }
824
825
826 /**
827 \brief Clear Pending Interrupt
828 \details Clears the pending bit of a device specific interrupt in the NVIC pending register.
829 \param [in] IRQn Device specific interrupt number.
830 \note IRQn must not be negative.
831 */
__NVIC_ClearPendingIRQ(IRQn_Type IRQn)832 __STATIC_INLINE void __NVIC_ClearPendingIRQ(IRQn_Type IRQn)
833 {
834 if ((int32_t)(IRQn) >= 0)
835 {
836 NVIC->ICPR[0U] = (uint32_t)(1UL << (((uint32_t)IRQn) & 0x1FUL));
837 }
838 }
839
840
841 /**
842 \brief Set Interrupt Priority
843 \details Sets the priority of a device specific interrupt or a processor exception.
844 The interrupt number can be positive to specify a device specific interrupt,
845 or negative to specify a processor exception.
846 \param [in] IRQn Interrupt number.
847 \param [in] priority Priority to set.
848 \note The priority cannot be set for every processor exception.
849 */
__NVIC_SetPriority(IRQn_Type IRQn,uint32_t priority)850 __STATIC_INLINE void __NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
851 {
852 if ((int32_t)(IRQn) >= 0)
853 {
854 NVIC->IP[_IP_IDX(IRQn)] = ((uint32_t)(NVIC->IP[_IP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
855 (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
856 }
857 else
858 {
859 SCB->SHP[_SHP_IDX(IRQn)] = ((uint32_t)(SCB->SHP[_SHP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) |
860 (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn)));
861 }
862 }
863
864
865 /**
866 \brief Get Interrupt Priority
867 \details Reads the priority of a device specific interrupt or a processor exception.
868 The interrupt number can be positive to specify a device specific interrupt,
869 or negative to specify a processor exception.
870 \param [in] IRQn Interrupt number.
871 \return Interrupt Priority.
872 Value is aligned automatically to the implemented priority bits of the microcontroller.
873 */
__NVIC_GetPriority(IRQn_Type IRQn)874 __STATIC_INLINE uint32_t __NVIC_GetPriority(IRQn_Type IRQn)
875 {
876
877 if ((int32_t)(IRQn) >= 0)
878 {
879 return((uint32_t)(((NVIC->IP[ _IP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
880 }
881 else
882 {
883 return((uint32_t)(((SCB->SHP[_SHP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS)));
884 }
885 }
886
887
888 /**
889 \brief Encode Priority
890 \details Encodes the priority for an interrupt with the given priority group,
891 preemptive priority value, and subpriority value.
892 In case of a conflict between priority grouping and available
893 priority bits (__NVIC_PRIO_BITS), the smallest possible priority group is set.
894 \param [in] PriorityGroup Used priority group.
895 \param [in] PreemptPriority Preemptive priority value (starting from 0).
896 \param [in] SubPriority Subpriority value (starting from 0).
897 \return Encoded priority. Value can be used in the function \ref NVIC_SetPriority().
898 */
NVIC_EncodePriority(uint32_t PriorityGroup,uint32_t PreemptPriority,uint32_t SubPriority)899 __STATIC_INLINE uint32_t NVIC_EncodePriority (uint32_t PriorityGroup, uint32_t PreemptPriority, uint32_t SubPriority)
900 {
901 uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL); /* only values 0..7 are used */
902 uint32_t PreemptPriorityBits;
903 uint32_t SubPriorityBits;
904
905 PreemptPriorityBits = ((7UL - PriorityGroupTmp) > (uint32_t)(__NVIC_PRIO_BITS)) ? (uint32_t)(__NVIC_PRIO_BITS) : (uint32_t)(7UL - PriorityGroupTmp);
906 SubPriorityBits = ((PriorityGroupTmp + (uint32_t)(__NVIC_PRIO_BITS)) < (uint32_t)7UL) ? (uint32_t)0UL : (uint32_t)((PriorityGroupTmp - 7UL) + (uint32_t)(__NVIC_PRIO_BITS));
907
908 return (
909 ((PreemptPriority & (uint32_t)((1UL << (PreemptPriorityBits)) - 1UL)) << SubPriorityBits) |
910 ((SubPriority & (uint32_t)((1UL << (SubPriorityBits )) - 1UL)))
911 );
912 }
913
914
915 /**
916 \brief Decode Priority
917 \details Decodes an interrupt priority value with a given priority group to
918 preemptive priority value and subpriority value.
919 In case of a conflict between priority grouping and available
920 priority bits (__NVIC_PRIO_BITS) the smallest possible priority group is set.
921 \param [in] Priority Priority value, which can be retrieved with the function \ref NVIC_GetPriority().
922 \param [in] PriorityGroup Used priority group.
923 \param [out] pPreemptPriority Preemptive priority value (starting from 0).
924 \param [out] pSubPriority Subpriority value (starting from 0).
925 */
NVIC_DecodePriority(uint32_t Priority,uint32_t PriorityGroup,uint32_t * const pPreemptPriority,uint32_t * const pSubPriority)926 __STATIC_INLINE void NVIC_DecodePriority (uint32_t Priority, uint32_t PriorityGroup, uint32_t* const pPreemptPriority, uint32_t* const pSubPriority)
927 {
928 uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL); /* only values 0..7 are used */
929 uint32_t PreemptPriorityBits;
930 uint32_t SubPriorityBits;
931
932 PreemptPriorityBits = ((7UL - PriorityGroupTmp) > (uint32_t)(__NVIC_PRIO_BITS)) ? (uint32_t)(__NVIC_PRIO_BITS) : (uint32_t)(7UL - PriorityGroupTmp);
933 SubPriorityBits = ((PriorityGroupTmp + (uint32_t)(__NVIC_PRIO_BITS)) < (uint32_t)7UL) ? (uint32_t)0UL : (uint32_t)((PriorityGroupTmp - 7UL) + (uint32_t)(__NVIC_PRIO_BITS));
934
935 *pPreemptPriority = (Priority >> SubPriorityBits) & (uint32_t)((1UL << (PreemptPriorityBits)) - 1UL);
936 *pSubPriority = (Priority ) & (uint32_t)((1UL << (SubPriorityBits )) - 1UL);
937 }
938
939
940 /**
941 \brief Set Interrupt Vector
942 \details Sets an interrupt vector in SRAM based interrupt vector table.
943 The interrupt number can be positive to specify a device specific interrupt,
944 or negative to specify a processor exception.
945 VTOR must been relocated to SRAM before.
946 If VTOR is not present address 0 must be mapped to SRAM.
947 \param [in] IRQn Interrupt number
948 \param [in] vector Address of interrupt handler function
949 */
__NVIC_SetVector(IRQn_Type IRQn,uint32_t vector)950 __STATIC_INLINE void __NVIC_SetVector(IRQn_Type IRQn, uint32_t vector)
951 {
952 #if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
953 uint32_t *vectors = (uint32_t *)SCB->VTOR;
954 vectors[(int32_t)IRQn + NVIC_USER_IRQ_OFFSET] = vector;
955 #else
956 uint32_t *vectors = (uint32_t *)(NVIC_USER_IRQ_OFFSET << 2); /* point to 1st user interrupt */
957 *(vectors + (int32_t)IRQn) = vector; /* use pointer arithmetic to access vector */
958 #endif
959 /* ARM Application Note 321 states that the M0+ does not require the architectural barrier */
960 }
961
962
963 /**
964 \brief Get Interrupt Vector
965 \details Reads an interrupt vector from interrupt vector table.
966 The interrupt number can be positive to specify a device specific interrupt,
967 or negative to specify a processor exception.
968 \param [in] IRQn Interrupt number.
969 \return Address of interrupt handler function
970 */
__NVIC_GetVector(IRQn_Type IRQn)971 __STATIC_INLINE uint32_t __NVIC_GetVector(IRQn_Type IRQn)
972 {
973 #if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
974 uint32_t *vectors = (uint32_t *)SCB->VTOR;
975 return vectors[(int32_t)IRQn + NVIC_USER_IRQ_OFFSET];
976 #else
977 uint32_t *vectors = (uint32_t *)(NVIC_USER_IRQ_OFFSET << 2); /* point to 1st user interrupt */
978 return *(vectors + (int32_t)IRQn); /* use pointer arithmetic to access vector */
979 #endif
980 }
981
982
983 /**
984 \brief System Reset
985 \details Initiates a system reset request to reset the MCU.
986 */
__NVIC_SystemReset(void)987 __NO_RETURN __STATIC_INLINE void __NVIC_SystemReset(void)
988 {
989 __DSB(); /* Ensure all outstanding memory accesses included
990 buffered write are completed before reset */
991 SCB->AIRCR = ((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
992 SCB_AIRCR_SYSRESETREQ_Msk);
993 __DSB(); /* Ensure completion of memory access */
994
995 for(;;) /* wait until reset */
996 {
997 __NOP();
998 }
999 }
1000
1001 /*@} end of CMSIS_Core_NVICFunctions */
1002
1003 /* ########################## MPU functions #################################### */
1004
1005 #if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1U)
1006
1007 #include "mpu_armv7.h"
1008
1009 #endif
1010
1011 /* ########################## FPU functions #################################### */
1012 /**
1013 \ingroup CMSIS_Core_FunctionInterface
1014 \defgroup CMSIS_Core_FpuFunctions FPU Functions
1015 \brief Function that provides FPU type.
1016 @{
1017 */
1018
1019 /**
1020 \brief get FPU type
1021 \details returns the FPU type
1022 \returns
1023 - \b 0: No FPU
1024 - \b 1: Single precision FPU
1025 - \b 2: Double + Single precision FPU
1026 */
SCB_GetFPUType(void)1027 __STATIC_INLINE uint32_t SCB_GetFPUType(void)
1028 {
1029 return 0U; /* No FPU */
1030 }
1031
1032
1033 /*@} end of CMSIS_Core_FpuFunctions */
1034
1035
1036
1037 /* ################################## SysTick function ############################################ */
1038 /**
1039 \ingroup CMSIS_Core_FunctionInterface
1040 \defgroup CMSIS_Core_SysTickFunctions SysTick Functions
1041 \brief Functions that configure the System.
1042 @{
1043 */
1044
1045 #if defined (__Vendor_SysTickConfig) && (__Vendor_SysTickConfig == 0U)
1046
1047 /**
1048 \brief System Tick Configuration
1049 \details Initializes the System Timer and its interrupt, and starts the System Tick Timer.
1050 Counter is in free running mode to generate periodic interrupts.
1051 \param [in] ticks Number of ticks between two interrupts.
1052 \return 0 Function succeeded.
1053 \return 1 Function failed.
1054 \note When the variable <b>__Vendor_SysTickConfig</b> is set to 1, then the
1055 function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b>
1056 must contain a vendor-specific implementation of this function.
1057 */
SysTick_Config(uint32_t ticks)1058 __STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
1059 {
1060 if ((ticks - 1UL) > SysTick_LOAD_RELOAD_Msk)
1061 {
1062 return (1UL); /* Reload value impossible */
1063 }
1064
1065 SysTick->LOAD = (uint32_t)(ticks - 1UL); /* set reload register */
1066 NVIC_SetPriority (SysTick_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL); /* set Priority for Systick Interrupt */
1067 SysTick->VAL = 0UL; /* Load the SysTick Counter Value */
1068 SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
1069 SysTick_CTRL_TICKINT_Msk |
1070 SysTick_CTRL_ENABLE_Msk; /* Enable SysTick IRQ and SysTick Timer */
1071 return (0UL); /* Function successful */
1072 }
1073
1074 #endif
1075
1076 /*@} end of CMSIS_Core_SysTickFunctions */
1077
1078
1079
1080
1081 #ifdef __cplusplus
1082 }
1083 #endif
1084
1085 #endif /* __CORE_CM0PLUS_H_DEPENDANT */
1086
1087 #endif /* __CMSIS_GENERIC */
1088
