1 /**************************************************************************//**
2 * @file core_cm0.h
3 * @brief CMSIS Cortex-M0 Core Peripheral Access Layer Header File
4 * @version V4.00
5 * @date 22. August 2014
6 *
7 * @note
8 *
9 ******************************************************************************/
10 /* Copyright (c) 2009 - 2014 ARM LIMITED
11
12 All rights reserved.
13 Redistribution and use in source and binary forms, with or without
14 modification, are permitted provided that the following conditions are met:
15 - Redistributions of source code must retain the above copyright
16 notice, this list of conditions and the following disclaimer.
17 - Redistributions in binary form must reproduce the above copyright
18 notice, this list of conditions and the following disclaimer in the
19 documentation and/or other materials provided with the distribution.
20 - Neither the name of ARM nor the names of its contributors may be used
21 to endorse or promote products derived from this software without
22 specific prior written permission.
23 *
24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 POSSIBILITY OF SUCH DAMAGE.
35 ---------------------------------------------------------------------------*/
36
37
38 #if defined ( __ICCARM__ )
39 #pragma system_include /* treat file as system include file for MISRA check */
40 #endif
41
42 #ifndef __CORE_CM0_H_GENERIC
43 #define __CORE_CM0_H_GENERIC
44
45 #ifdef __cplusplus
46 extern "C" {
47 #endif
48
49 /** \page CMSIS_MISRA_Exceptions MISRA-C:2004 Compliance Exceptions
50 CMSIS violates the following MISRA-C:2004 rules:
51
52 \li Required Rule 8.5, object/function definition in header file.<br>
53 Function definitions in header files are used to allow 'inlining'.
54
55 \li Required Rule 18.4, declaration of union type or object of union type: '{...}'.<br>
56 Unions are used for effective representation of core registers.
57
58 \li Advisory Rule 19.7, Function-like macro defined.<br>
59 Function-like macros are used to allow more efficient code.
60 */
61
62
63 /*******************************************************************************
64 * CMSIS definitions
65 ******************************************************************************/
66 /** \ingroup Cortex_M0
67 @{
68 */
69
70 /* CMSIS CM0 definitions */
71 #define __CM0_CMSIS_VERSION_MAIN (0x04) /*!< [31:16] CMSIS HAL main version */
72 #define __CM0_CMSIS_VERSION_SUB (0x00) /*!< [15:0] CMSIS HAL sub version */
73 #define __CM0_CMSIS_VERSION ((__CM0_CMSIS_VERSION_MAIN << 16) | \
74 __CM0_CMSIS_VERSION_SUB ) /*!< CMSIS HAL version number */
75
76 #define __CORTEX_M (0x00) /*!< Cortex-M Core */
77
78
79 #if defined ( __CC_ARM )
80 #define __ASM __asm /*!< asm keyword for ARM Compiler */
81 #define __INLINE __inline /*!< inline keyword for ARM Compiler */
82 #define __STATIC_INLINE static __inline
83
84 #elif defined ( __GNUC__ )
85 #define __ASM __asm /*!< asm keyword for GNU Compiler */
86 #define __INLINE inline /*!< inline keyword for GNU Compiler */
87 #define __STATIC_INLINE static inline
88
89 #elif defined ( __ICCARM__ )
90 #define __ASM __asm /*!< asm keyword for IAR Compiler */
91 #define __INLINE inline /*!< inline keyword for IAR Compiler. Only available in High optimization mode! */
92 #define __STATIC_INLINE static inline
93
94 #elif defined ( __TMS470__ )
95 #define __ASM __asm /*!< asm keyword for TI CCS Compiler */
96 #define __STATIC_INLINE static inline
97
98 #elif defined ( __TASKING__ )
99 #define __ASM __asm /*!< asm keyword for TASKING Compiler */
100 #define __INLINE inline /*!< inline keyword for TASKING Compiler */
101 #define __STATIC_INLINE static inline
102
103 #elif defined ( __CSMC__ )
104 #define __packed
105 #define __ASM _asm /*!< asm keyword for COSMIC Compiler */
106 #define __INLINE inline /*use -pc99 on compile line !< inline keyword for COSMIC Compiler */
107 #define __STATIC_INLINE static inline
108
109 #endif
110
111 /** __FPU_USED indicates whether an FPU is used or not.
112 This core does not support an FPU at all
113 */
114 #define __FPU_USED 0
115
116 #if defined ( __CC_ARM )
117 #if defined __TARGET_FPU_VFP
118 #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
119 #endif
120
121 #elif defined ( __GNUC__ )
122 #if defined (__VFP_FP__) && !defined(__SOFTFP__)
123 #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
124 #endif
125
126 #elif defined ( __ICCARM__ )
127 #if defined __ARMVFP__
128 #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
129 #endif
130
131 #elif defined ( __TMS470__ )
132 #if defined __TI__VFP_SUPPORT____
133 #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
134 #endif
135
136 #elif defined ( __TASKING__ )
137 #if defined __FPU_VFP__
138 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
139 #endif
140
141 #elif defined ( __CSMC__ ) /* Cosmic */
142 #if ( __CSMC__ & 0x400) // FPU present for parser
143 #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
144 #endif
145 #endif
146
147 #include <stdint.h> /* standard types definitions */
148 #include <core_cmInstr.h> /* Core Instruction Access */
149 #include <core_cmFunc.h> /* Core Function Access */
150
151 #ifdef __cplusplus
152 }
153 #endif
154
155 #endif /* __CORE_CM0_H_GENERIC */
156
157 #ifndef __CMSIS_GENERIC
158
159 #ifndef __CORE_CM0_H_DEPENDANT
160 #define __CORE_CM0_H_DEPENDANT
161
162 #ifdef __cplusplus
163 extern "C" {
164 #endif
165
166 /* check device defines and use defaults */
167 #if defined __CHECK_DEVICE_DEFINES
168 #ifndef __CM0_REV
169 #define __CM0_REV 0x0000
170 #warning "__CM0_REV not defined in device header file; using default!"
171 #endif
172
173 #ifndef __NVIC_PRIO_BITS
174 #define __NVIC_PRIO_BITS 2
175 #warning "__NVIC_PRIO_BITS not defined in device header file; using default!"
176 #endif
177
178 #ifndef __Vendor_SysTickConfig
179 #define __Vendor_SysTickConfig 0
180 #warning "__Vendor_SysTickConfig not defined in device header file; using default!"
181 #endif
182 #endif
183
184 /* IO definitions (access restrictions to peripheral registers) */
185 /**
186 \defgroup CMSIS_glob_defs CMSIS Global Defines
187
188 <strong>IO Type Qualifiers</strong> are used
189 \li to specify the access to peripheral variables.
190 \li for automatic generation of peripheral register debug information.
191 */
192 #ifdef __cplusplus
193 #define __I volatile /*!< Defines 'read only' permissions */
194 #else
195 #define __I volatile const /*!< Defines 'read only' permissions */
196 #endif
197 #define __O volatile /*!< Defines 'write only' permissions */
198 #define __IO volatile /*!< Defines 'read / write' permissions */
199
200 /*@} end of group Cortex_M0 */
201
202
203
204 /*******************************************************************************
205 * Register Abstraction
206 Core Register contain:
207 - Core Register
208 - Core NVIC Register
209 - Core SCB Register
210 - Core SysTick Register
211 ******************************************************************************/
212 /** \defgroup CMSIS_core_register Defines and Type Definitions
213 \brief Type definitions and defines for Cortex-M processor based devices.
214 */
215
216 /** \ingroup CMSIS_core_register
217 \defgroup CMSIS_CORE Status and Control Registers
218 \brief Core Register type definitions.
219 @{
220 */
221
222 /** \brief Union type to access the Application Program Status Register (APSR).
223 */
224 typedef union
225 {
226 struct
227 {
228 #if (__CORTEX_M != 0x04)
229 uint32_t _reserved0:27; /*!< bit: 0..26 Reserved */
230 #else
231 uint32_t _reserved0:16; /*!< bit: 0..15 Reserved */
232 uint32_t GE:4; /*!< bit: 16..19 Greater than or Equal flags */
233 uint32_t _reserved1:7; /*!< bit: 20..26 Reserved */
234 #endif
235 uint32_t Q:1; /*!< bit: 27 Saturation condition flag */
236 uint32_t V:1; /*!< bit: 28 Overflow condition code flag */
237 uint32_t C:1; /*!< bit: 29 Carry condition code flag */
238 uint32_t Z:1; /*!< bit: 30 Zero condition code flag */
239 uint32_t N:1; /*!< bit: 31 Negative condition code flag */
240 } b; /*!< Structure used for bit access */
241 uint32_t w; /*!< Type used for word access */
242 } APSR_Type;
243
244
245 /** \brief Union type to access the Interrupt Program Status Register (IPSR).
246 */
247 typedef union
248 {
249 struct
250 {
251 uint32_t ISR:9; /*!< bit: 0.. 8 Exception number */
252 uint32_t _reserved0:23; /*!< bit: 9..31 Reserved */
253 } b; /*!< Structure used for bit access */
254 uint32_t w; /*!< Type used for word access */
255 } IPSR_Type;
256
257
258 /** \brief Union type to access the Special-Purpose Program Status Registers (xPSR).
259 */
260 typedef union
261 {
262 struct
263 {
264 uint32_t ISR:9; /*!< bit: 0.. 8 Exception number */
265 #if (__CORTEX_M != 0x04)
266 uint32_t _reserved0:15; /*!< bit: 9..23 Reserved */
267 #else
268 uint32_t _reserved0:7; /*!< bit: 9..15 Reserved */
269 uint32_t GE:4; /*!< bit: 16..19 Greater than or Equal flags */
270 uint32_t _reserved1:4; /*!< bit: 20..23 Reserved */
271 #endif
272 uint32_t T:1; /*!< bit: 24 Thumb bit (read 0) */
273 uint32_t IT:2; /*!< bit: 25..26 saved IT state (read 0) */
274 uint32_t Q:1; /*!< bit: 27 Saturation condition flag */
275 uint32_t V:1; /*!< bit: 28 Overflow condition code flag */
276 uint32_t C:1; /*!< bit: 29 Carry condition code flag */
277 uint32_t Z:1; /*!< bit: 30 Zero condition code flag */
278 uint32_t N:1; /*!< bit: 31 Negative condition code flag */
279 } b; /*!< Structure used for bit access */
280 uint32_t w; /*!< Type used for word access */
281 } xPSR_Type;
282
283
284 /** \brief Union type to access the Control Registers (CONTROL).
285 */
286 typedef union
287 {
288 struct
289 {
290 uint32_t nPRIV:1; /*!< bit: 0 Execution privilege in Thread mode */
291 uint32_t SPSEL:1; /*!< bit: 1 Stack to be used */
292 uint32_t FPCA:1; /*!< bit: 2 FP extension active flag */
293 uint32_t _reserved0:29; /*!< bit: 3..31 Reserved */
294 } b; /*!< Structure used for bit access */
295 uint32_t w; /*!< Type used for word access */
296 } CONTROL_Type;
297
298 /*@} end of group CMSIS_CORE */
299
300
301 /** \ingroup CMSIS_core_register
302 \defgroup CMSIS_NVIC Nested Vectored Interrupt Controller (NVIC)
303 \brief Type definitions for the NVIC Registers
304 @{
305 */
306
307 /** \brief Structure type to access the Nested Vectored Interrupt Controller (NVIC).
308 */
309 typedef struct
310 {
311 __IO uint32_t ISER[1]; /*!< Offset: 0x000 (R/W) Interrupt Set Enable Register */
312 uint32_t RESERVED0[31];
313 __IO uint32_t ICER[1]; /*!< Offset: 0x080 (R/W) Interrupt Clear Enable Register */
314 uint32_t RSERVED1[31];
315 __IO uint32_t ISPR[1]; /*!< Offset: 0x100 (R/W) Interrupt Set Pending Register */
316 uint32_t RESERVED2[31];
317 __IO uint32_t ICPR[1]; /*!< Offset: 0x180 (R/W) Interrupt Clear Pending Register */
318 uint32_t RESERVED3[31];
319 uint32_t RESERVED4[64];
320 __IO uint32_t IP[8]; /*!< Offset: 0x300 (R/W) Interrupt Priority Register */
321 } NVIC_Type;
322
323 /*@} end of group CMSIS_NVIC */
324
325
326 /** \ingroup CMSIS_core_register
327 \defgroup CMSIS_SCB System Control Block (SCB)
328 \brief Type definitions for the System Control Block Registers
329 @{
330 */
331
332 /** \brief Structure type to access the System Control Block (SCB).
333 */
334 typedef struct
335 {
336 __I uint32_t CPUID; /*!< Offset: 0x000 (R/ ) CPUID Base Register */
337 __IO uint32_t ICSR; /*!< Offset: 0x004 (R/W) Interrupt Control and State Register */
338 uint32_t RESERVED0;
339 __IO uint32_t AIRCR; /*!< Offset: 0x00C (R/W) Application Interrupt and Reset Control Register */
340 __IO uint32_t SCR; /*!< Offset: 0x010 (R/W) System Control Register */
341 __IO uint32_t CCR; /*!< Offset: 0x014 (R/W) Configuration Control Register */
342 uint32_t RESERVED1;
343 __IO uint32_t SHP[2]; /*!< Offset: 0x01C (R/W) System Handlers Priority Registers. [0] is RESERVED */
344 __IO uint32_t SHCSR; /*!< Offset: 0x024 (R/W) System Handler Control and State Register */
345 } SCB_Type;
346
347 /* SCB CPUID Register Definitions */
348 #define SCB_CPUID_IMPLEMENTER_Pos 24 /*!< SCB CPUID: IMPLEMENTER Position */
349 #define SCB_CPUID_IMPLEMENTER_Msk (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos) /*!< SCB CPUID: IMPLEMENTER Mask */
350
351 #define SCB_CPUID_VARIANT_Pos 20 /*!< SCB CPUID: VARIANT Position */
352 #define SCB_CPUID_VARIANT_Msk (0xFUL << SCB_CPUID_VARIANT_Pos) /*!< SCB CPUID: VARIANT Mask */
353
354 #define SCB_CPUID_ARCHITECTURE_Pos 16 /*!< SCB CPUID: ARCHITECTURE Position */
355 #define SCB_CPUID_ARCHITECTURE_Msk (0xFUL << SCB_CPUID_ARCHITECTURE_Pos) /*!< SCB CPUID: ARCHITECTURE Mask */
356
357 #define SCB_CPUID_PARTNO_Pos 4 /*!< SCB CPUID: PARTNO Position */
358 #define SCB_CPUID_PARTNO_Msk (0xFFFUL << SCB_CPUID_PARTNO_Pos) /*!< SCB CPUID: PARTNO Mask */
359
360 #define SCB_CPUID_REVISION_Pos 0 /*!< SCB CPUID: REVISION Position */
361 #define SCB_CPUID_REVISION_Msk (0xFUL << SCB_CPUID_REVISION_Pos) /*!< SCB CPUID: REVISION Mask */
362
363 /* SCB Interrupt Control State Register Definitions */
364 #define SCB_ICSR_NMIPENDSET_Pos 31 /*!< SCB ICSR: NMIPENDSET Position */
365 #define SCB_ICSR_NMIPENDSET_Msk (1UL << SCB_ICSR_NMIPENDSET_Pos) /*!< SCB ICSR: NMIPENDSET Mask */
366
367 #define SCB_ICSR_PENDSVSET_Pos 28 /*!< SCB ICSR: PENDSVSET Position */
368 #define SCB_ICSR_PENDSVSET_Msk (1UL << SCB_ICSR_PENDSVSET_Pos) /*!< SCB ICSR: PENDSVSET Mask */
369
370 #define SCB_ICSR_PENDSVCLR_Pos 27 /*!< SCB ICSR: PENDSVCLR Position */
371 #define SCB_ICSR_PENDSVCLR_Msk (1UL << SCB_ICSR_PENDSVCLR_Pos) /*!< SCB ICSR: PENDSVCLR Mask */
372
373 #define SCB_ICSR_PENDSTSET_Pos 26 /*!< SCB ICSR: PENDSTSET Position */
374 #define SCB_ICSR_PENDSTSET_Msk (1UL << SCB_ICSR_PENDSTSET_Pos) /*!< SCB ICSR: PENDSTSET Mask */
375
376 #define SCB_ICSR_PENDSTCLR_Pos 25 /*!< SCB ICSR: PENDSTCLR Position */
377 #define SCB_ICSR_PENDSTCLR_Msk (1UL << SCB_ICSR_PENDSTCLR_Pos) /*!< SCB ICSR: PENDSTCLR Mask */
378
379 #define SCB_ICSR_ISRPREEMPT_Pos 23 /*!< SCB ICSR: ISRPREEMPT Position */
380 #define SCB_ICSR_ISRPREEMPT_Msk (1UL << SCB_ICSR_ISRPREEMPT_Pos) /*!< SCB ICSR: ISRPREEMPT Mask */
381
382 #define SCB_ICSR_ISRPENDING_Pos 22 /*!< SCB ICSR: ISRPENDING Position */
383 #define SCB_ICSR_ISRPENDING_Msk (1UL << SCB_ICSR_ISRPENDING_Pos) /*!< SCB ICSR: ISRPENDING Mask */
384
385 #define SCB_ICSR_VECTPENDING_Pos 12 /*!< SCB ICSR: VECTPENDING Position */
386 #define SCB_ICSR_VECTPENDING_Msk (0x1FFUL << SCB_ICSR_VECTPENDING_Pos) /*!< SCB ICSR: VECTPENDING Mask */
387
388 #define SCB_ICSR_VECTACTIVE_Pos 0 /*!< SCB ICSR: VECTACTIVE Position */
389 #define SCB_ICSR_VECTACTIVE_Msk (0x1FFUL << SCB_ICSR_VECTACTIVE_Pos) /*!< SCB ICSR: VECTACTIVE Mask */
390
391 /* SCB Application Interrupt and Reset Control Register Definitions */
392 #define SCB_AIRCR_VECTKEY_Pos 16 /*!< SCB AIRCR: VECTKEY Position */
393 #define SCB_AIRCR_VECTKEY_Msk (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos) /*!< SCB AIRCR: VECTKEY Mask */
394
395 #define SCB_AIRCR_VECTKEYSTAT_Pos 16 /*!< SCB AIRCR: VECTKEYSTAT Position */
396 #define SCB_AIRCR_VECTKEYSTAT_Msk (0xFFFFUL << SCB_AIRCR_VECTKEYSTAT_Pos) /*!< SCB AIRCR: VECTKEYSTAT Mask */
397
398 #define SCB_AIRCR_ENDIANESS_Pos 15 /*!< SCB AIRCR: ENDIANESS Position */
399 #define SCB_AIRCR_ENDIANESS_Msk (1UL << SCB_AIRCR_ENDIANESS_Pos) /*!< SCB AIRCR: ENDIANESS Mask */
400
401 #define SCB_AIRCR_SYSRESETREQ_Pos 2 /*!< SCB AIRCR: SYSRESETREQ Position */
402 #define SCB_AIRCR_SYSRESETREQ_Msk (1UL << SCB_AIRCR_SYSRESETREQ_Pos) /*!< SCB AIRCR: SYSRESETREQ Mask */
403
404 #define SCB_AIRCR_VECTCLRACTIVE_Pos 1 /*!< SCB AIRCR: VECTCLRACTIVE Position */
405 #define SCB_AIRCR_VECTCLRACTIVE_Msk (1UL << SCB_AIRCR_VECTCLRACTIVE_Pos) /*!< SCB AIRCR: VECTCLRACTIVE Mask */
406
407 /* SCB System Control Register Definitions */
408 #define SCB_SCR_SEVONPEND_Pos 4 /*!< SCB SCR: SEVONPEND Position */
409 #define SCB_SCR_SEVONPEND_Msk (1UL << SCB_SCR_SEVONPEND_Pos) /*!< SCB SCR: SEVONPEND Mask */
410
411 #define SCB_SCR_SLEEPDEEP_Pos 2 /*!< SCB SCR: SLEEPDEEP Position */
412 #define SCB_SCR_SLEEPDEEP_Msk (1UL << SCB_SCR_SLEEPDEEP_Pos) /*!< SCB SCR: SLEEPDEEP Mask */
413
414 #define SCB_SCR_SLEEPONEXIT_Pos 1 /*!< SCB SCR: SLEEPONEXIT Position */
415 #define SCB_SCR_SLEEPONEXIT_Msk (1UL << SCB_SCR_SLEEPONEXIT_Pos) /*!< SCB SCR: SLEEPONEXIT Mask */
416
417 /* SCB Configuration Control Register Definitions */
418 #define SCB_CCR_STKALIGN_Pos 9 /*!< SCB CCR: STKALIGN Position */
419 #define SCB_CCR_STKALIGN_Msk (1UL << SCB_CCR_STKALIGN_Pos) /*!< SCB CCR: STKALIGN Mask */
420
421 #define SCB_CCR_UNALIGN_TRP_Pos 3 /*!< SCB CCR: UNALIGN_TRP Position */
422 #define SCB_CCR_UNALIGN_TRP_Msk (1UL << SCB_CCR_UNALIGN_TRP_Pos) /*!< SCB CCR: UNALIGN_TRP Mask */
423
424 /* SCB System Handler Control and State Register Definitions */
425 #define SCB_SHCSR_SVCALLPENDED_Pos 15 /*!< SCB SHCSR: SVCALLPENDED Position */
426 #define SCB_SHCSR_SVCALLPENDED_Msk (1UL << SCB_SHCSR_SVCALLPENDED_Pos) /*!< SCB SHCSR: SVCALLPENDED Mask */
427
428 /*@} end of group CMSIS_SCB */
429
430
431 /** \ingroup CMSIS_core_register
432 \defgroup CMSIS_SysTick System Tick Timer (SysTick)
433 \brief Type definitions for the System Timer Registers.
434 @{
435 */
436
437 /** \brief Structure type to access the System Timer (SysTick).
438 */
439 typedef struct
440 {
441 __IO uint32_t CTRL; /*!< Offset: 0x000 (R/W) SysTick Control and Status Register */
442 __IO uint32_t LOAD; /*!< Offset: 0x004 (R/W) SysTick Reload Value Register */
443 __IO uint32_t VAL; /*!< Offset: 0x008 (R/W) SysTick Current Value Register */
444 __I uint32_t CALIB; /*!< Offset: 0x00C (R/ ) SysTick Calibration Register */
445 } SysTick_Type;
446
447 /* SysTick Control / Status Register Definitions */
448 #define SysTick_CTRL_COUNTFLAG_Pos 16 /*!< SysTick CTRL: COUNTFLAG Position */
449 #define SysTick_CTRL_COUNTFLAG_Msk (1UL << SysTick_CTRL_COUNTFLAG_Pos) /*!< SysTick CTRL: COUNTFLAG Mask */
450
451 #define SysTick_CTRL_CLKSOURCE_Pos 2 /*!< SysTick CTRL: CLKSOURCE Position */
452 #define SysTick_CTRL_CLKSOURCE_Msk (1UL << SysTick_CTRL_CLKSOURCE_Pos) /*!< SysTick CTRL: CLKSOURCE Mask */
453
454 #define SysTick_CTRL_TICKINT_Pos 1 /*!< SysTick CTRL: TICKINT Position */
455 #define SysTick_CTRL_TICKINT_Msk (1UL << SysTick_CTRL_TICKINT_Pos) /*!< SysTick CTRL: TICKINT Mask */
456
457 #define SysTick_CTRL_ENABLE_Pos 0 /*!< SysTick CTRL: ENABLE Position */
458 #define SysTick_CTRL_ENABLE_Msk (1UL << SysTick_CTRL_ENABLE_Pos) /*!< SysTick CTRL: ENABLE Mask */
459
460 /* SysTick Reload Register Definitions */
461 #define SysTick_LOAD_RELOAD_Pos 0 /*!< SysTick LOAD: RELOAD Position */
462 #define SysTick_LOAD_RELOAD_Msk (0xFFFFFFUL << SysTick_LOAD_RELOAD_Pos) /*!< SysTick LOAD: RELOAD Mask */
463
464 /* SysTick Current Register Definitions */
465 #define SysTick_VAL_CURRENT_Pos 0 /*!< SysTick VAL: CURRENT Position */
466 #define SysTick_VAL_CURRENT_Msk (0xFFFFFFUL << SysTick_VAL_CURRENT_Pos) /*!< SysTick VAL: CURRENT Mask */
467
468 /* SysTick Calibration Register Definitions */
469 #define SysTick_CALIB_NOREF_Pos 31 /*!< SysTick CALIB: NOREF Position */
470 #define SysTick_CALIB_NOREF_Msk (1UL << SysTick_CALIB_NOREF_Pos) /*!< SysTick CALIB: NOREF Mask */
471
472 #define SysTick_CALIB_SKEW_Pos 30 /*!< SysTick CALIB: SKEW Position */
473 #define SysTick_CALIB_SKEW_Msk (1UL << SysTick_CALIB_SKEW_Pos) /*!< SysTick CALIB: SKEW Mask */
474
475 #define SysTick_CALIB_TENMS_Pos 0 /*!< SysTick CALIB: TENMS Position */
476 #define SysTick_CALIB_TENMS_Msk (0xFFFFFFUL << SysTick_CALIB_TENMS_Pos) /*!< SysTick CALIB: TENMS Mask */
477
478 /*@} end of group CMSIS_SysTick */
479
480
481 /** \ingroup CMSIS_core_register
482 \defgroup CMSIS_CoreDebug Core Debug Registers (CoreDebug)
483 \brief Cortex-M0 Core Debug Registers (DCB registers, SHCSR, and DFSR)
484 are only accessible over DAP and not via processor. Therefore
485 they are not covered by the Cortex-M0 header file.
486 @{
487 */
488 /*@} end of group CMSIS_CoreDebug */
489
490
491 /** \ingroup CMSIS_core_register
492 \defgroup CMSIS_core_base Core Definitions
493 \brief Definitions for base addresses, unions, and structures.
494 @{
495 */
496
497 /* Memory mapping of Cortex-M0 Hardware */
498 #define SCS_BASE (0xE000E000UL) /*!< System Control Space Base Address */
499 #define SysTick_BASE (SCS_BASE + 0x0010UL) /*!< SysTick Base Address */
500 #define NVIC_BASE (SCS_BASE + 0x0100UL) /*!< NVIC Base Address */
501 #define SCB_BASE (SCS_BASE + 0x0D00UL) /*!< System Control Block Base Address */
502
503 #define SCB ((SCB_Type *) SCB_BASE ) /*!< SCB configuration struct */
504 #define SysTick ((SysTick_Type *) SysTick_BASE ) /*!< SysTick configuration struct */
505 #define NVIC ((NVIC_Type *) NVIC_BASE ) /*!< NVIC configuration struct */
506
507
508 /*@} */
509
510
511
512 /*******************************************************************************
513 * Hardware Abstraction Layer
514 Core Function Interface contains:
515 - Core NVIC Functions
516 - Core SysTick Functions
517 - Core Register Access Functions
518 ******************************************************************************/
519 /** \defgroup CMSIS_Core_FunctionInterface Functions and Instructions Reference
520 */
521
522
523
524 /* ########################## NVIC functions #################################### */
525 /** \ingroup CMSIS_Core_FunctionInterface
526 \defgroup CMSIS_Core_NVICFunctions NVIC Functions
527 \brief Functions that manage interrupts and exceptions via the NVIC.
528 @{
529 */
530
531 /* Interrupt Priorities are WORD accessible only under ARMv6M */
532 /* The following MACROS handle generation of the register offset and byte masks */
533 #define _BIT_SHIFT(IRQn) ( (((uint32_t)(IRQn) ) & 0x03) * 8 )
534 #define _SHP_IDX(IRQn) ( ((((uint32_t)(IRQn) & 0x0F)-8) >> 2) )
535 #define _IP_IDX(IRQn) ( ((uint32_t)(IRQn) >> 2) )
536
537
538 /** \brief Enable External Interrupt
539
540 The function enables a device-specific interrupt in the NVIC interrupt controller.
541
542 \param [in] IRQn External interrupt number. Value cannot be negative.
543 */
NVIC_EnableIRQ(IRQn_Type IRQn)544 __STATIC_INLINE void NVIC_EnableIRQ(IRQn_Type IRQn)
545 {
546 NVIC->ISER[0] = (1 << ((uint32_t)(IRQn) & 0x1F));
547 }
548
549
550 /** \brief Disable External Interrupt
551
552 The function disables a device-specific interrupt in the NVIC interrupt controller.
553
554 \param [in] IRQn External interrupt number. Value cannot be negative.
555 */
NVIC_DisableIRQ(IRQn_Type IRQn)556 __STATIC_INLINE void NVIC_DisableIRQ(IRQn_Type IRQn)
557 {
558 NVIC->ICER[0] = (1 << ((uint32_t)(IRQn) & 0x1F));
559 }
560
561
562 /** \brief Get Pending Interrupt
563
564 The function reads the pending register in the NVIC and returns the pending bit
565 for the specified interrupt.
566
567 \param [in] IRQn Interrupt number.
568
569 \return 0 Interrupt status is not pending.
570 \return 1 Interrupt status is pending.
571 */
NVIC_GetPendingIRQ(IRQn_Type IRQn)572 __STATIC_INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
573 {
574 return((uint32_t) ((NVIC->ISPR[0] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0));
575 }
576
577
578 /** \brief Set Pending Interrupt
579
580 The function sets the pending bit of an external interrupt.
581
582 \param [in] IRQn Interrupt number. Value cannot be negative.
583 */
NVIC_SetPendingIRQ(IRQn_Type IRQn)584 __STATIC_INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn)
585 {
586 NVIC->ISPR[0] = (1 << ((uint32_t)(IRQn) & 0x1F));
587 }
588
589
590 /** \brief Clear Pending Interrupt
591
592 The function clears the pending bit of an external interrupt.
593
594 \param [in] IRQn External interrupt number. Value cannot be negative.
595 */
NVIC_ClearPendingIRQ(IRQn_Type IRQn)596 __STATIC_INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
597 {
598 NVIC->ICPR[0] = (1 << ((uint32_t)(IRQn) & 0x1F)); /* Clear pending interrupt */
599 }
600
601
602 /** \brief Set Interrupt Priority
603
604 The function sets the priority of an interrupt.
605
606 \note The priority cannot be set for every core interrupt.
607
608 \param [in] IRQn Interrupt number.
609 \param [in] priority Priority to set.
610 */
NVIC_SetPriority(IRQn_Type IRQn,uint32_t priority)611 __STATIC_INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
612 {
613 if(IRQn < 0) {
614 SCB->SHP[_SHP_IDX(IRQn)] = (SCB->SHP[_SHP_IDX(IRQn)] & ~(0xFF << _BIT_SHIFT(IRQn))) |
615 (((priority << (8 - __NVIC_PRIO_BITS)) & 0xFF) << _BIT_SHIFT(IRQn)); }
616 else {
617 NVIC->IP[_IP_IDX(IRQn)] = (NVIC->IP[_IP_IDX(IRQn)] & ~(0xFF << _BIT_SHIFT(IRQn))) |
618 (((priority << (8 - __NVIC_PRIO_BITS)) & 0xFF) << _BIT_SHIFT(IRQn)); }
619 }
620
621
622 /** \brief Get Interrupt Priority
623
624 The function reads the priority of an interrupt. The interrupt
625 number can be positive to specify an external (device specific)
626 interrupt, or negative to specify an internal (core) interrupt.
627
628
629 \param [in] IRQn Interrupt number.
630 \return Interrupt Priority. Value is aligned automatically to the implemented
631 priority bits of the microcontroller.
632 */
NVIC_GetPriority(IRQn_Type IRQn)633 __STATIC_INLINE uint32_t NVIC_GetPriority(IRQn_Type IRQn)
634 {
635
636 if(IRQn < 0) {
637 return((uint32_t)(((SCB->SHP[_SHP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & 0xFF) >> (8 - __NVIC_PRIO_BITS))); } /* get priority for Cortex-M0 system interrupts */
638 else {
639 return((uint32_t)(((NVIC->IP[ _IP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & 0xFF) >> (8 - __NVIC_PRIO_BITS))); } /* get priority for device specific interrupts */
640 }
641
642
643 /** \brief System Reset
644
645 The function initiates a system reset request to reset the MCU.
646 */
NVIC_SystemReset(void)647 __STATIC_INLINE void NVIC_SystemReset(void)
648 {
649 __DSB(); /* Ensure all outstanding memory accesses included
650 buffered write are completed before reset */
651 SCB->AIRCR = ((0x5FA << SCB_AIRCR_VECTKEY_Pos) |
652 SCB_AIRCR_SYSRESETREQ_Msk);
653 __DSB(); /* Ensure completion of memory access */
654 while(1); /* wait until reset */
655 }
656
657 /*@} end of CMSIS_Core_NVICFunctions */
658
659
660
661 /* ################################## SysTick function ############################################ */
662 /** \ingroup CMSIS_Core_FunctionInterface
663 \defgroup CMSIS_Core_SysTickFunctions SysTick Functions
664 \brief Functions that configure the System.
665 @{
666 */
667
668 #if (__Vendor_SysTickConfig == 0)
669
670 /** \brief System Tick Configuration
671
672 The function initializes the System Timer and its interrupt, and starts the System Tick Timer.
673 Counter is in free running mode to generate periodic interrupts.
674
675 \param [in] ticks Number of ticks between two interrupts.
676
677 \return 0 Function succeeded.
678 \return 1 Function failed.
679
680 \note When the variable <b>__Vendor_SysTickConfig</b> is set to 1, then the
681 function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b>
682 must contain a vendor-specific implementation of this function.
683
684 */
SysTick_Config(uint32_t ticks)685 __STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
686 {
687 if ((ticks - 1) > SysTick_LOAD_RELOAD_Msk) return (1); /* Reload value impossible */
688
689 SysTick->LOAD = ticks - 1; /* set reload register */
690 NVIC_SetPriority (SysTick_IRQn, (1<<__NVIC_PRIO_BITS) - 1); /* set Priority for Systick Interrupt */
691 SysTick->VAL = 0; /* Load the SysTick Counter Value */
692 SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
693 SysTick_CTRL_TICKINT_Msk |
694 SysTick_CTRL_ENABLE_Msk; /* Enable SysTick IRQ and SysTick Timer */
695 return (0); /* Function successful */
696 }
697
698 #endif
699
700 /*@} end of CMSIS_Core_SysTickFunctions */
701
702
703
704
705 #ifdef __cplusplus
706 }
707 #endif
708
709 #endif /* __CORE_CM0_H_DEPENDANT */
710
711 #endif /* __CMSIS_GENERIC */
712
