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| 483170 | 1 | /**************************************************************************//** |
| Q | 2 | * @file core_cm0.h |
| 3 | * @brief CMSIS Cortex-M0 Core Peripheral Access Layer Header File | |
| 4 | * @version V4.30 | |
| 5 | * @date 20. October 2015 | |
| 6 | ******************************************************************************/ | |
| 7 | /* Copyright (c) 2009 - 2015 ARM LIMITED | |
| 8 | ||
| 9 | All rights reserved. | |
| 10 | Redistribution and use in source and binary forms, with or without | |
| 11 | modification, are permitted provided that the following conditions are met: | |
| 12 | - Redistributions of source code must retain the above copyright | |
| 13 | notice, this list of conditions and the following disclaimer. | |
| 14 | - Redistributions in binary form must reproduce the above copyright | |
| 15 | notice, this list of conditions and the following disclaimer in the | |
| 16 | documentation and/or other materials provided with the distribution. | |
| 17 | - Neither the name of ARM nor the names of its contributors may be used | |
| 18 | to endorse or promote products derived from this software without | |
| 19 | specific prior written permission. | |
| 20 | * | |
| 21 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 22 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE | |
| 25 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 26 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 27 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 28 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 29 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 30 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 31 | POSSIBILITY OF SUCH DAMAGE. | |
| 32 | ---------------------------------------------------------------------------*/ | |
| 33 | ||
| 34 | ||
| 35 | #if defined ( __ICCARM__ ) | |
| 36 | #pragma system_include /* treat file as system include file for MISRA check */ | |
| 37 | #elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050) | |
| 38 | #pragma clang system_header /* treat file as system include file */ | |
| 39 | #endif | |
| 40 | ||
| 41 | #ifndef __CORE_CM0_H_GENERIC | |
| 42 | #define __CORE_CM0_H_GENERIC | |
| 43 | ||
| 44 | #include <stdint.h> | |
| 45 | ||
| 46 | #ifdef __cplusplus | |
| 47 | extern "C" { | |
| 48 | #endif | |
| 49 | ||
| 50 | /** | |
| 51 | \page CMSIS_MISRA_Exceptions MISRA-C:2004 Compliance Exceptions | |
| 52 | CMSIS violates the following MISRA-C:2004 rules: | |
| 53 | ||
| 54 | \li Required Rule 8.5, object/function definition in header file.<br> | |
| 55 | Function definitions in header files are used to allow 'inlining'. | |
| 56 | ||
| 57 | \li Required Rule 18.4, declaration of union type or object of union type: '{...}'.<br> | |
| 58 | Unions are used for effective representation of core registers. | |
| 59 | ||
| 60 | \li Advisory Rule 19.7, Function-like macro defined.<br> | |
| 61 | Function-like macros are used to allow more efficient code. | |
| 62 | */ | |
| 63 | ||
| 64 | ||
| 65 | /******************************************************************************* | |
| 66 | * CMSIS definitions | |
| 67 | ******************************************************************************/ | |
| 68 | /** | |
| 69 | \ingroup Cortex_M0 | |
| 70 | @{ | |
| 71 | */ | |
| 72 | ||
| 73 | /* CMSIS CM0 definitions */ | |
| 74 | #define __CM0_CMSIS_VERSION_MAIN (0x04U) /*!< [31:16] CMSIS HAL main version */ | |
| 75 | #define __CM0_CMSIS_VERSION_SUB (0x1EU) /*!< [15:0] CMSIS HAL sub version */ | |
| 76 | #define __CM0_CMSIS_VERSION ((__CM0_CMSIS_VERSION_MAIN << 16U) | \ | |
| 77 | __CM0_CMSIS_VERSION_SUB ) /*!< CMSIS HAL version number */ | |
| 78 | ||
| 79 | #define __CORTEX_M (0x00U) /*!< Cortex-M Core */ | |
| 80 | ||
| 81 | ||
| 82 | #if defined ( __CC_ARM ) | |
| 83 | #define __ASM __asm /*!< asm keyword for ARM Compiler */ | |
| 84 | #define __INLINE __inline /*!< inline keyword for ARM Compiler */ | |
| 85 | #define __STATIC_INLINE static __inline | |
| 86 | ||
| 87 | #elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050) | |
| 88 | #define __ASM __asm /*!< asm keyword for ARM Compiler */ | |
| 89 | #define __INLINE __inline /*!< inline keyword for ARM Compiler */ | |
| 90 | #define __STATIC_INLINE static __inline | |
| 91 | ||
| 92 | #elif defined ( __GNUC__ ) | |
| 93 | #define __ASM __asm /*!< asm keyword for GNU Compiler */ | |
| 94 | #define __INLINE inline /*!< inline keyword for GNU Compiler */ | |
| 95 | #define __STATIC_INLINE static inline | |
| 96 | ||
| 97 | #elif defined ( __ICCARM__ ) | |
| 98 | #define __ASM __asm /*!< asm keyword for IAR Compiler */ | |
| 99 | #define __INLINE inline /*!< inline keyword for IAR Compiler. Only available in High optimization mode! */ | |
| 100 | #define __STATIC_INLINE static inline | |
| 101 | ||
| 102 | #elif defined ( __TMS470__ ) | |
| 103 | #define __ASM __asm /*!< asm keyword for TI CCS Compiler */ | |
| 104 | #define __STATIC_INLINE static inline | |
| 105 | ||
| 106 | #elif defined ( __TASKING__ ) | |
| 107 | #define __ASM __asm /*!< asm keyword for TASKING Compiler */ | |
| 108 | #define __INLINE inline /*!< inline keyword for TASKING Compiler */ | |
| 109 | #define __STATIC_INLINE static inline | |
| 110 | ||
| 111 | #elif defined ( __CSMC__ ) | |
| 112 | #define __packed | |
| 113 | #define __ASM _asm /*!< asm keyword for COSMIC Compiler */ | |
| 114 | #define __INLINE inline /*!< inline keyword for COSMIC Compiler. Use -pc99 on compile line */ | |
| 115 | #define __STATIC_INLINE static inline | |
| 116 | ||
| 117 | #else | |
| 118 | #error Unknown compiler | |
| 119 | #endif | |
| 120 | ||
| 121 | /** __FPU_USED indicates whether an FPU is used or not. | |
| 122 | This core does not support an FPU at all | |
| 123 | */ | |
| 124 | #define __FPU_USED 0U | |
| 125 | ||
| 126 | #if defined ( __CC_ARM ) | |
| 127 | #if defined __TARGET_FPU_VFP | |
| 128 | #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)" | |
| 129 | #endif | |
| 130 | ||
| 131 | #elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050) | |
| 132 | #if defined __ARM_PCS_VFP | |
| 133 | #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)" | |
| 134 | #endif | |
| 135 | ||
| 136 | #elif defined ( __GNUC__ ) | |
| 137 | #if defined (__VFP_FP__) && !defined(__SOFTFP__) | |
| 138 | #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)" | |
| 139 | #endif | |
| 140 | ||
| 141 | #elif defined ( __ICCARM__ ) | |
| 142 | #if defined __ARMVFP__ | |
| 143 | #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)" | |
| 144 | #endif | |
| 145 | ||
| 146 | #elif defined ( __TMS470__ ) | |
| 147 | #if defined __TI_VFP_SUPPORT__ | |
| 148 | #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)" | |
| 149 | #endif | |
| 150 | ||
| 151 | #elif defined ( __TASKING__ ) | |
| 152 | #if defined __FPU_VFP__ | |
| 153 | #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)" | |
| 154 | #endif | |
| 155 | ||
| 156 | #elif defined ( __CSMC__ ) | |
| 157 | #if ( __CSMC__ & 0x400U) | |
| 158 | #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)" | |
| 159 | #endif | |
| 160 | ||
| 161 | #endif | |
| 162 | ||
| 163 | #include "core_cmInstr.h" /* Core Instruction Access */ | |
| 164 | #include "core_cmFunc.h" /* Core Function Access */ | |
| 165 | ||
| 166 | #ifdef __cplusplus | |
| 167 | } | |
| 168 | #endif | |
| 169 | ||
| 170 | #endif /* __CORE_CM0_H_GENERIC */ | |
| 171 | ||
| 172 | #ifndef __CMSIS_GENERIC | |
| 173 | ||
| 174 | #ifndef __CORE_CM0_H_DEPENDANT | |
| 175 | #define __CORE_CM0_H_DEPENDANT | |
| 176 | ||
| 177 | #ifdef __cplusplus | |
| 178 | extern "C" { | |
| 179 | #endif | |
| 180 | ||
| 181 | /* check device defines and use defaults */ | |
| 182 | #if defined __CHECK_DEVICE_DEFINES | |
| 183 | #ifndef __CM0_REV | |
| 184 | #define __CM0_REV 0x0000U | |
| 185 | #warning "__CM0_REV not defined in device header file; using default!" | |
| 186 | #endif | |
| 187 | ||
| 188 | #ifndef __NVIC_PRIO_BITS | |
| 189 | #define __NVIC_PRIO_BITS 2U | |
| 190 | #warning "__NVIC_PRIO_BITS not defined in device header file; using default!" | |
| 191 | #endif | |
| 192 | ||
| 193 | #ifndef __Vendor_SysTickConfig | |
| 194 | #define __Vendor_SysTickConfig 0U | |
| 195 | #warning "__Vendor_SysTickConfig not defined in device header file; using default!" | |
| 196 | #endif | |
| 197 | #endif | |
| 198 | ||
| 199 | /* IO definitions (access restrictions to peripheral registers) */ | |
| 200 | /** | |
| 201 | \defgroup CMSIS_glob_defs CMSIS Global Defines | |
| 202 | ||
| 203 | <strong>IO Type Qualifiers</strong> are used | |
| 204 | \li to specify the access to peripheral variables. | |
| 205 | \li for automatic generation of peripheral register debug information. | |
| 206 | */ | |
| 207 | #ifdef __cplusplus | |
| 208 | #define __I volatile /*!< Defines 'read only' permissions */ | |
| 209 | #else | |
| 210 | #define __I volatile const /*!< Defines 'read only' permissions */ | |
| 211 | #endif | |
| 212 | #define __O volatile /*!< Defines 'write only' permissions */ | |
| 213 | #define __IO volatile /*!< Defines 'read / write' permissions */ | |
| 214 | ||
| 215 | /* following defines should be used for structure members */ | |
| 216 | #define __IM volatile const /*! Defines 'read only' structure member permissions */ | |
| 217 | #define __OM volatile /*! Defines 'write only' structure member permissions */ | |
| 218 | #define __IOM volatile /*! Defines 'read / write' structure member permissions */ | |
| 219 | ||
| 220 | /*@} end of group Cortex_M0 */ | |
| 221 | ||
| 222 | ||
| 223 | ||
| 224 | /******************************************************************************* | |
| 225 | * Register Abstraction | |
| 226 | Core Register contain: | |
| 227 | - Core Register | |
| 228 | - Core NVIC Register | |
| 229 | - Core SCB Register | |
| 230 | - Core SysTick Register | |
| 231 | ******************************************************************************/ | |
| 232 | /** | |
| 233 | \defgroup CMSIS_core_register Defines and Type Definitions | |
| 234 | \brief Type definitions and defines for Cortex-M processor based devices. | |
| 235 | */ | |
| 236 | ||
| 237 | /** | |
| 238 | \ingroup CMSIS_core_register | |
| 239 | \defgroup CMSIS_CORE Status and Control Registers | |
| 240 | \brief Core Register type definitions. | |
| 241 | @{ | |
| 242 | */ | |
| 243 | ||
| 244 | /** | |
| 245 | \brief Union type to access the Application Program Status Register (APSR). | |
| 246 | */ | |
| 247 | typedef union | |
| 248 | { | |
| 249 | struct | |
| 250 | { | |
| 251 | uint32_t _reserved0:28; /*!< bit: 0..27 Reserved */ | |
| 252 | uint32_t V:1; /*!< bit: 28 Overflow condition code flag */ | |
| 253 | uint32_t C:1; /*!< bit: 29 Carry condition code flag */ | |
| 254 | uint32_t Z:1; /*!< bit: 30 Zero condition code flag */ | |
| 255 | uint32_t N:1; /*!< bit: 31 Negative condition code flag */ | |
| 256 | } b; /*!< Structure used for bit access */ | |
| 257 | uint32_t w; /*!< Type used for word access */ | |
| 258 | } APSR_Type; | |
| 259 | ||
| 260 | /* APSR Register Definitions */ | |
| 261 | #define APSR_N_Pos 31U /*!< APSR: N Position */ | |
| 262 | #define APSR_N_Msk (1UL << APSR_N_Pos) /*!< APSR: N Mask */ | |
| 263 | ||
| 264 | #define APSR_Z_Pos 30U /*!< APSR: Z Position */ | |
| 265 | #define APSR_Z_Msk (1UL << APSR_Z_Pos) /*!< APSR: Z Mask */ | |
| 266 | ||
| 267 | #define APSR_C_Pos 29U /*!< APSR: C Position */ | |
| 268 | #define APSR_C_Msk (1UL << APSR_C_Pos) /*!< APSR: C Mask */ | |
| 269 | ||
| 270 | #define APSR_V_Pos 28U /*!< APSR: V Position */ | |
| 271 | #define APSR_V_Msk (1UL << APSR_V_Pos) /*!< APSR: V Mask */ | |
| 272 | ||
| 273 | ||
| 274 | /** | |
| 275 | \brief Union type to access the Interrupt Program Status Register (IPSR). | |
| 276 | */ | |
| 277 | typedef union | |
| 278 | { | |
| 279 | struct | |
| 280 | { | |
| 281 | uint32_t ISR:9; /*!< bit: 0.. 8 Exception number */ | |
| 282 | uint32_t _reserved0:23; /*!< bit: 9..31 Reserved */ | |
| 283 | } b; /*!< Structure used for bit access */ | |
| 284 | uint32_t w; /*!< Type used for word access */ | |
| 285 | } IPSR_Type; | |
| 286 | ||
| 287 | /* IPSR Register Definitions */ | |
| 288 | #define IPSR_ISR_Pos 0U /*!< IPSR: ISR Position */ | |
| 289 | #define IPSR_ISR_Msk (0x1FFUL /*<< IPSR_ISR_Pos*/) /*!< IPSR: ISR Mask */ | |
| 290 | ||
| 291 | ||
| 292 | /** | |
| 293 | \brief Union type to access the Special-Purpose Program Status Registers (xPSR). | |
| 294 | */ | |
| 295 | typedef union | |
| 296 | { | |
| 297 | struct | |
| 298 | { | |
| 299 | uint32_t ISR:9; /*!< bit: 0.. 8 Exception number */ | |
| 300 | uint32_t _reserved0:15; /*!< bit: 9..23 Reserved */ | |
| 301 | uint32_t T:1; /*!< bit: 24 Thumb bit (read 0) */ | |
| 302 | uint32_t _reserved1:3; /*!< bit: 25..27 Reserved */ | |
| 303 | uint32_t V:1; /*!< bit: 28 Overflow condition code flag */ | |
| 304 | uint32_t C:1; /*!< bit: 29 Carry condition code flag */ | |
| 305 | uint32_t Z:1; /*!< bit: 30 Zero condition code flag */ | |
| 306 | uint32_t N:1; /*!< bit: 31 Negative condition code flag */ | |
| 307 | } b; /*!< Structure used for bit access */ | |
| 308 | uint32_t w; /*!< Type used for word access */ | |
| 309 | } xPSR_Type; | |
| 310 | ||
| 311 | /* xPSR Register Definitions */ | |
| 312 | #define xPSR_N_Pos 31U /*!< xPSR: N Position */ | |
| 313 | #define xPSR_N_Msk (1UL << xPSR_N_Pos) /*!< xPSR: N Mask */ | |
| 314 | ||
| 315 | #define xPSR_Z_Pos 30U /*!< xPSR: Z Position */ | |
| 316 | #define xPSR_Z_Msk (1UL << xPSR_Z_Pos) /*!< xPSR: Z Mask */ | |
| 317 | ||
| 318 | #define xPSR_C_Pos 29U /*!< xPSR: C Position */ | |
| 319 | #define xPSR_C_Msk (1UL << xPSR_C_Pos) /*!< xPSR: C Mask */ | |
| 320 | ||
| 321 | #define xPSR_V_Pos 28U /*!< xPSR: V Position */ | |
| 322 | #define xPSR_V_Msk (1UL << xPSR_V_Pos) /*!< xPSR: V Mask */ | |
| 323 | ||
| 324 | #define xPSR_T_Pos 24U /*!< xPSR: T Position */ | |
| 325 | #define xPSR_T_Msk (1UL << xPSR_T_Pos) /*!< xPSR: T Mask */ | |
| 326 | ||
| 327 | #define xPSR_ISR_Pos 0U /*!< xPSR: ISR Position */ | |
| 328 | #define xPSR_ISR_Msk (0x1FFUL /*<< xPSR_ISR_Pos*/) /*!< xPSR: ISR Mask */ | |
| 329 | ||
| 330 | ||
| 331 | /** | |
| 332 | \brief Union type to access the Control Registers (CONTROL). | |
| 333 | */ | |
| 334 | typedef union | |
| 335 | { | |
| 336 | struct | |
| 337 | { | |
| 338 | uint32_t _reserved0:1; /*!< bit: 0 Reserved */ | |
| 339 | uint32_t SPSEL:1; /*!< bit: 1 Stack to be used */ | |
| 340 | uint32_t _reserved1:30; /*!< bit: 2..31 Reserved */ | |
| 341 | } b; /*!< Structure used for bit access */ | |
| 342 | uint32_t w; /*!< Type used for word access */ | |
| 343 | } CONTROL_Type; | |
| 344 | ||
| 345 | /* CONTROL Register Definitions */ | |
| 346 | #define CONTROL_SPSEL_Pos 1U /*!< CONTROL: SPSEL Position */ | |
| 347 | #define CONTROL_SPSEL_Msk (1UL << CONTROL_SPSEL_Pos) /*!< CONTROL: SPSEL Mask */ | |
| 348 | ||
| 349 | /*@} end of group CMSIS_CORE */ | |
| 350 | ||
| 351 | ||
| 352 | /** | |
| 353 | \ingroup CMSIS_core_register | |
| 354 | \defgroup CMSIS_NVIC Nested Vectored Interrupt Controller (NVIC) | |
| 355 | \brief Type definitions for the NVIC Registers | |
| 356 | @{ | |
| 357 | */ | |
| 358 | ||
| 359 | /** | |
| 360 | \brief Structure type to access the Nested Vectored Interrupt Controller (NVIC). | |
| 361 | */ | |
| 362 | typedef struct | |
| 363 | { | |
| 364 | __IOM uint32_t ISER[1U]; /*!< Offset: 0x000 (R/W) Interrupt Set Enable Register */ | |
| 365 | uint32_t RESERVED0[31U]; | |
| 366 | __IOM uint32_t ICER[1U]; /*!< Offset: 0x080 (R/W) Interrupt Clear Enable Register */ | |
| 367 | uint32_t RSERVED1[31U]; | |
| 368 | __IOM uint32_t ISPR[1U]; /*!< Offset: 0x100 (R/W) Interrupt Set Pending Register */ | |
| 369 | uint32_t RESERVED2[31U]; | |
| 370 | __IOM uint32_t ICPR[1U]; /*!< Offset: 0x180 (R/W) Interrupt Clear Pending Register */ | |
| 371 | uint32_t RESERVED3[31U]; | |
| 372 | uint32_t RESERVED4[64U]; | |
| 373 | __IOM uint32_t IP[8U]; /*!< Offset: 0x300 (R/W) Interrupt Priority Register */ | |
| 374 | } NVIC_Type; | |
| 375 | ||
| 376 | /*@} end of group CMSIS_NVIC */ | |
| 377 | ||
| 378 | ||
| 379 | /** | |
| 380 | \ingroup CMSIS_core_register | |
| 381 | \defgroup CMSIS_SCB System Control Block (SCB) | |
| 382 | \brief Type definitions for the System Control Block Registers | |
| 383 | @{ | |
| 384 | */ | |
| 385 | ||
| 386 | /** | |
| 387 | \brief Structure type to access the System Control Block (SCB). | |
| 388 | */ | |
| 389 | typedef struct | |
| 390 | { | |
| 391 | __IM uint32_t CPUID; /*!< Offset: 0x000 (R/ ) CPUID Base Register */ | |
| 392 | __IOM uint32_t ICSR; /*!< Offset: 0x004 (R/W) Interrupt Control and State Register */ | |
| 393 | uint32_t RESERVED0; | |
| 394 | __IOM uint32_t AIRCR; /*!< Offset: 0x00C (R/W) Application Interrupt and Reset Control Register */ | |
| 395 | __IOM uint32_t SCR; /*!< Offset: 0x010 (R/W) System Control Register */ | |
| 396 | __IOM uint32_t CCR; /*!< Offset: 0x014 (R/W) Configuration Control Register */ | |
| 397 | uint32_t RESERVED1; | |
| 398 | __IOM uint32_t SHP[2U]; /*!< Offset: 0x01C (R/W) System Handlers Priority Registers. [0] is RESERVED */ | |
| 399 | __IOM uint32_t SHCSR; /*!< Offset: 0x024 (R/W) System Handler Control and State Register */ | |
| 400 | } SCB_Type; | |
| 401 | ||
| 402 | /* SCB CPUID Register Definitions */ | |
| 403 | #define SCB_CPUID_IMPLEMENTER_Pos 24U /*!< SCB CPUID: IMPLEMENTER Position */ | |
| 404 | #define SCB_CPUID_IMPLEMENTER_Msk (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos) /*!< SCB CPUID: IMPLEMENTER Mask */ | |
| 405 | ||
| 406 | #define SCB_CPUID_VARIANT_Pos 20U /*!< SCB CPUID: VARIANT Position */ | |
| 407 | #define SCB_CPUID_VARIANT_Msk (0xFUL << SCB_CPUID_VARIANT_Pos) /*!< SCB CPUID: VARIANT Mask */ | |
| 408 | ||
| 409 | #define SCB_CPUID_ARCHITECTURE_Pos 16U /*!< SCB CPUID: ARCHITECTURE Position */ | |
| 410 | #define SCB_CPUID_ARCHITECTURE_Msk (0xFUL << SCB_CPUID_ARCHITECTURE_Pos) /*!< SCB CPUID: ARCHITECTURE Mask */ | |
| 411 | ||
| 412 | #define SCB_CPUID_PARTNO_Pos 4U /*!< SCB CPUID: PARTNO Position */ | |
| 413 | #define SCB_CPUID_PARTNO_Msk (0xFFFUL << SCB_CPUID_PARTNO_Pos) /*!< SCB CPUID: PARTNO Mask */ | |
| 414 | ||
| 415 | #define SCB_CPUID_REVISION_Pos 0U /*!< SCB CPUID: REVISION Position */ | |
| 416 | #define SCB_CPUID_REVISION_Msk (0xFUL /*<< SCB_CPUID_REVISION_Pos*/) /*!< SCB CPUID: REVISION Mask */ | |
| 417 | ||
| 418 | /* SCB Interrupt Control State Register Definitions */ | |
| 419 | #define SCB_ICSR_NMIPENDSET_Pos 31U /*!< SCB ICSR: NMIPENDSET Position */ | |
| 420 | #define SCB_ICSR_NMIPENDSET_Msk (1UL << SCB_ICSR_NMIPENDSET_Pos) /*!< SCB ICSR: NMIPENDSET Mask */ | |
| 421 | ||
| 422 | #define SCB_ICSR_PENDSVSET_Pos 28U /*!< SCB ICSR: PENDSVSET Position */ | |
| 423 | #define SCB_ICSR_PENDSVSET_Msk (1UL << SCB_ICSR_PENDSVSET_Pos) /*!< SCB ICSR: PENDSVSET Mask */ | |
| 424 | ||
| 425 | #define SCB_ICSR_PENDSVCLR_Pos 27U /*!< SCB ICSR: PENDSVCLR Position */ | |
| 426 | #define SCB_ICSR_PENDSVCLR_Msk (1UL << SCB_ICSR_PENDSVCLR_Pos) /*!< SCB ICSR: PENDSVCLR Mask */ | |
| 427 | ||
| 428 | #define SCB_ICSR_PENDSTSET_Pos 26U /*!< SCB ICSR: PENDSTSET Position */ | |
| 429 | #define SCB_ICSR_PENDSTSET_Msk (1UL << SCB_ICSR_PENDSTSET_Pos) /*!< SCB ICSR: PENDSTSET Mask */ | |
| 430 | ||
| 431 | #define SCB_ICSR_PENDSTCLR_Pos 25U /*!< SCB ICSR: PENDSTCLR Position */ | |
| 432 | #define SCB_ICSR_PENDSTCLR_Msk (1UL << SCB_ICSR_PENDSTCLR_Pos) /*!< SCB ICSR: PENDSTCLR Mask */ | |
| 433 | ||
| 434 | #define SCB_ICSR_ISRPREEMPT_Pos 23U /*!< SCB ICSR: ISRPREEMPT Position */ | |
| 435 | #define SCB_ICSR_ISRPREEMPT_Msk (1UL << SCB_ICSR_ISRPREEMPT_Pos) /*!< SCB ICSR: ISRPREEMPT Mask */ | |
| 436 | ||
| 437 | #define SCB_ICSR_ISRPENDING_Pos 22U /*!< SCB ICSR: ISRPENDING Position */ | |
| 438 | #define SCB_ICSR_ISRPENDING_Msk (1UL << SCB_ICSR_ISRPENDING_Pos) /*!< SCB ICSR: ISRPENDING Mask */ | |
| 439 | ||
| 440 | #define SCB_ICSR_VECTPENDING_Pos 12U /*!< SCB ICSR: VECTPENDING Position */ | |
| 441 | #define SCB_ICSR_VECTPENDING_Msk (0x1FFUL << SCB_ICSR_VECTPENDING_Pos) /*!< SCB ICSR: VECTPENDING Mask */ | |
| 442 | ||
| 443 | #define SCB_ICSR_VECTACTIVE_Pos 0U /*!< SCB ICSR: VECTACTIVE Position */ | |
| 444 | #define SCB_ICSR_VECTACTIVE_Msk (0x1FFUL /*<< SCB_ICSR_VECTACTIVE_Pos*/) /*!< SCB ICSR: VECTACTIVE Mask */ | |
| 445 | ||
| 446 | /* SCB Application Interrupt and Reset Control Register Definitions */ | |
| 447 | #define SCB_AIRCR_VECTKEY_Pos 16U /*!< SCB AIRCR: VECTKEY Position */ | |
| 448 | #define SCB_AIRCR_VECTKEY_Msk (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos) /*!< SCB AIRCR: VECTKEY Mask */ | |
| 449 | ||
| 450 | #define SCB_AIRCR_VECTKEYSTAT_Pos 16U /*!< SCB AIRCR: VECTKEYSTAT Position */ | |
| 451 | #define SCB_AIRCR_VECTKEYSTAT_Msk (0xFFFFUL << SCB_AIRCR_VECTKEYSTAT_Pos) /*!< SCB AIRCR: VECTKEYSTAT Mask */ | |
| 452 | ||
| 453 | #define SCB_AIRCR_ENDIANESS_Pos 15U /*!< SCB AIRCR: ENDIANESS Position */ | |
| 454 | #define SCB_AIRCR_ENDIANESS_Msk (1UL << SCB_AIRCR_ENDIANESS_Pos) /*!< SCB AIRCR: ENDIANESS Mask */ | |
| 455 | ||
| 456 | #define SCB_AIRCR_SYSRESETREQ_Pos 2U /*!< SCB AIRCR: SYSRESETREQ Position */ | |
| 457 | #define SCB_AIRCR_SYSRESETREQ_Msk (1UL << SCB_AIRCR_SYSRESETREQ_Pos) /*!< SCB AIRCR: SYSRESETREQ Mask */ | |
| 458 | ||
| 459 | #define SCB_AIRCR_VECTCLRACTIVE_Pos 1U /*!< SCB AIRCR: VECTCLRACTIVE Position */ | |
| 460 | #define SCB_AIRCR_VECTCLRACTIVE_Msk (1UL << SCB_AIRCR_VECTCLRACTIVE_Pos) /*!< SCB AIRCR: VECTCLRACTIVE Mask */ | |
| 461 | ||
| 462 | /* SCB System Control Register Definitions */ | |
| 463 | #define SCB_SCR_SEVONPEND_Pos 4U /*!< SCB SCR: SEVONPEND Position */ | |
| 464 | #define SCB_SCR_SEVONPEND_Msk (1UL << SCB_SCR_SEVONPEND_Pos) /*!< SCB SCR: SEVONPEND Mask */ | |
| 465 | ||
| 466 | #define SCB_SCR_SLEEPDEEP_Pos 2U /*!< SCB SCR: SLEEPDEEP Position */ | |
| 467 | #define SCB_SCR_SLEEPDEEP_Msk (1UL << SCB_SCR_SLEEPDEEP_Pos) /*!< SCB SCR: SLEEPDEEP Mask */ | |
| 468 | ||
| 469 | #define SCB_SCR_SLEEPONEXIT_Pos 1U /*!< SCB SCR: SLEEPONEXIT Position */ | |
| 470 | #define SCB_SCR_SLEEPONEXIT_Msk (1UL << SCB_SCR_SLEEPONEXIT_Pos) /*!< SCB SCR: SLEEPONEXIT Mask */ | |
| 471 | ||
| 472 | /* SCB Configuration Control Register Definitions */ | |
| 473 | #define SCB_CCR_STKALIGN_Pos 9U /*!< SCB CCR: STKALIGN Position */ | |
| 474 | #define SCB_CCR_STKALIGN_Msk (1UL << SCB_CCR_STKALIGN_Pos) /*!< SCB CCR: STKALIGN Mask */ | |
| 475 | ||
| 476 | #define SCB_CCR_UNALIGN_TRP_Pos 3U /*!< SCB CCR: UNALIGN_TRP Position */ | |
| 477 | #define SCB_CCR_UNALIGN_TRP_Msk (1UL << SCB_CCR_UNALIGN_TRP_Pos) /*!< SCB CCR: UNALIGN_TRP Mask */ | |
| 478 | ||
| 479 | /* SCB System Handler Control and State Register Definitions */ | |
| 480 | #define SCB_SHCSR_SVCALLPENDED_Pos 15U /*!< SCB SHCSR: SVCALLPENDED Position */ | |
| 481 | #define SCB_SHCSR_SVCALLPENDED_Msk (1UL << SCB_SHCSR_SVCALLPENDED_Pos) /*!< SCB SHCSR: SVCALLPENDED Mask */ | |
| 482 | ||
| 483 | /*@} end of group CMSIS_SCB */ | |
| 484 | ||
| 485 | ||
| 486 | /** | |
| 487 | \ingroup CMSIS_core_register | |
| 488 | \defgroup CMSIS_SysTick System Tick Timer (SysTick) | |
| 489 | \brief Type definitions for the System Timer Registers. | |
| 490 | @{ | |
| 491 | */ | |
| 492 | ||
| 493 | /** | |
| 494 | \brief Structure type to access the System Timer (SysTick). | |
| 495 | */ | |
| 496 | typedef struct | |
| 497 | { | |
| 498 | __IOM uint32_t CTRL; /*!< Offset: 0x000 (R/W) SysTick Control and Status Register */ | |
| 499 | __IOM uint32_t LOAD; /*!< Offset: 0x004 (R/W) SysTick Reload Value Register */ | |
| 500 | __IOM uint32_t VAL; /*!< Offset: 0x008 (R/W) SysTick Current Value Register */ | |
| 501 | __IM uint32_t CALIB; /*!< Offset: 0x00C (R/ ) SysTick Calibration Register */ | |
| 502 | } SysTick_Type; | |
| 503 | ||
| 504 | /* SysTick Control / Status Register Definitions */ | |
| 505 | #define SysTick_CTRL_COUNTFLAG_Pos 16U /*!< SysTick CTRL: COUNTFLAG Position */ | |
| 506 | #define SysTick_CTRL_COUNTFLAG_Msk (1UL << SysTick_CTRL_COUNTFLAG_Pos) /*!< SysTick CTRL: COUNTFLAG Mask */ | |
| 507 | ||
| 508 | #define SysTick_CTRL_CLKSOURCE_Pos 2U /*!< SysTick CTRL: CLKSOURCE Position */ | |
| 509 | #define SysTick_CTRL_CLKSOURCE_Msk (1UL << SysTick_CTRL_CLKSOURCE_Pos) /*!< SysTick CTRL: CLKSOURCE Mask */ | |
| 510 | ||
| 511 | #define SysTick_CTRL_TICKINT_Pos 1U /*!< SysTick CTRL: TICKINT Position */ | |
| 512 | #define SysTick_CTRL_TICKINT_Msk (1UL << SysTick_CTRL_TICKINT_Pos) /*!< SysTick CTRL: TICKINT Mask */ | |
| 513 | ||
| 514 | #define SysTick_CTRL_ENABLE_Pos 0U /*!< SysTick CTRL: ENABLE Position */ | |
| 515 | #define SysTick_CTRL_ENABLE_Msk (1UL /*<< SysTick_CTRL_ENABLE_Pos*/) /*!< SysTick CTRL: ENABLE Mask */ | |
| 516 | ||
| 517 | /* SysTick Reload Register Definitions */ | |
| 518 | #define SysTick_LOAD_RELOAD_Pos 0U /*!< SysTick LOAD: RELOAD Position */ | |
| 519 | #define SysTick_LOAD_RELOAD_Msk (0xFFFFFFUL /*<< SysTick_LOAD_RELOAD_Pos*/) /*!< SysTick LOAD: RELOAD Mask */ | |
| 520 | ||
| 521 | /* SysTick Current Register Definitions */ | |
| 522 | #define SysTick_VAL_CURRENT_Pos 0U /*!< SysTick VAL: CURRENT Position */ | |
| 523 | #define SysTick_VAL_CURRENT_Msk (0xFFFFFFUL /*<< SysTick_VAL_CURRENT_Pos*/) /*!< SysTick VAL: CURRENT Mask */ | |
| 524 | ||
| 525 | /* SysTick Calibration Register Definitions */ | |
| 526 | #define SysTick_CALIB_NOREF_Pos 31U /*!< SysTick CALIB: NOREF Position */ | |
| 527 | #define SysTick_CALIB_NOREF_Msk (1UL << SysTick_CALIB_NOREF_Pos) /*!< SysTick CALIB: NOREF Mask */ | |
| 528 | ||
| 529 | #define SysTick_CALIB_SKEW_Pos 30U /*!< SysTick CALIB: SKEW Position */ | |
| 530 | #define SysTick_CALIB_SKEW_Msk (1UL << SysTick_CALIB_SKEW_Pos) /*!< SysTick CALIB: SKEW Mask */ | |
| 531 | ||
| 532 | #define SysTick_CALIB_TENMS_Pos 0U /*!< SysTick CALIB: TENMS Position */ | |
| 533 | #define SysTick_CALIB_TENMS_Msk (0xFFFFFFUL /*<< SysTick_CALIB_TENMS_Pos*/) /*!< SysTick CALIB: TENMS Mask */ | |
| 534 | ||
| 535 | /*@} end of group CMSIS_SysTick */ | |
| 536 | ||
| 537 | ||
| 538 | /** | |
| 539 | \ingroup CMSIS_core_register | |
| 540 | \defgroup CMSIS_CoreDebug Core Debug Registers (CoreDebug) | |
| 541 | \brief Cortex-M0 Core Debug Registers (DCB registers, SHCSR, and DFSR) are only accessible over DAP and not via processor. | |
| 542 | Therefore they are not covered by the Cortex-M0 header file. | |
| 543 | @{ | |
| 544 | */ | |
| 545 | /*@} end of group CMSIS_CoreDebug */ | |
| 546 | ||
| 547 | ||
| 548 | /** | |
| 549 | \ingroup CMSIS_core_register | |
| 550 | \defgroup CMSIS_core_bitfield Core register bit field macros | |
| 551 | \brief Macros for use with bit field definitions (xxx_Pos, xxx_Msk). | |
| 552 | @{ | |
| 553 | */ | |
| 554 | ||
| 555 | /** | |
| 556 | \brief Mask and shift a bit field value for use in a register bit range. | |
| 557 | \param[in] field Name of the register bit field. | |
| 558 | \param[in] value Value of the bit field. | |
| 559 | \return Masked and shifted value. | |
| 560 | */ | |
| 561 | #define _VAL2FLD(field, value) ((value << field ## _Pos) & field ## _Msk) | |
| 562 | ||
| 563 | /** | |
| 564 | \brief Mask and shift a register value to extract a bit filed value. | |
| 565 | \param[in] field Name of the register bit field. | |
| 566 | \param[in] value Value of register. | |
| 567 | \return Masked and shifted bit field value. | |
| 568 | */ | |
| 569 | #define _FLD2VAL(field, value) ((value & field ## _Msk) >> field ## _Pos) | |
| 570 | ||
| 571 | /*@} end of group CMSIS_core_bitfield */ | |
| 572 | ||
| 573 | ||
| 574 | /** | |
| 575 | \ingroup CMSIS_core_register | |
| 576 | \defgroup CMSIS_core_base Core Definitions | |
| 577 | \brief Definitions for base addresses, unions, and structures. | |
| 578 | @{ | |
| 579 | */ | |
| 580 | ||
| 581 | /* Memory mapping of Cortex-M0 Hardware */ | |
| 582 | #define SCS_BASE (0xE000E000UL) /*!< System Control Space Base Address */ | |
| 583 | #define SysTick_BASE (SCS_BASE + 0x0010UL) /*!< SysTick Base Address */ | |
| 584 | #define NVIC_BASE (SCS_BASE + 0x0100UL) /*!< NVIC Base Address */ | |
| 585 | #define SCB_BASE (SCS_BASE + 0x0D00UL) /*!< System Control Block Base Address */ | |
| 586 | ||
| 587 | #define SCB ((SCB_Type *) SCB_BASE ) /*!< SCB configuration struct */ | |
| 588 | #define SysTick ((SysTick_Type *) SysTick_BASE ) /*!< SysTick configuration struct */ | |
| 589 | #define NVIC ((NVIC_Type *) NVIC_BASE ) /*!< NVIC configuration struct */ | |
| 590 | ||
| 591 | ||
| 592 | /*@} */ | |
| 593 | ||
| 594 | ||
| 595 | ||
| 596 | /******************************************************************************* | |
| 597 | * Hardware Abstraction Layer | |
| 598 | Core Function Interface contains: | |
| 599 | - Core NVIC Functions | |
| 600 | - Core SysTick Functions | |
| 601 | - Core Register Access Functions | |
| 602 | ******************************************************************************/ | |
| 603 | /** | |
| 604 | \defgroup CMSIS_Core_FunctionInterface Functions and Instructions Reference | |
| 605 | */ | |
| 606 | ||
| 607 | ||
| 608 | ||
| 609 | /* ########################## NVIC functions #################################### */ | |
| 610 | /** | |
| 611 | \ingroup CMSIS_Core_FunctionInterface | |
| 612 | \defgroup CMSIS_Core_NVICFunctions NVIC Functions | |
| 613 | \brief Functions that manage interrupts and exceptions via the NVIC. | |
| 614 | @{ | |
| 615 | */ | |
| 616 | ||
| 617 | /* Interrupt Priorities are WORD accessible only under ARMv6M */ | |
| 618 | /* The following MACROS handle generation of the register offset and byte masks */ | |
| 619 | #define _BIT_SHIFT(IRQn) ( ((((uint32_t)(int32_t)(IRQn)) ) & 0x03UL) * 8UL) | |
| 620 | #define _SHP_IDX(IRQn) ( (((((uint32_t)(int32_t)(IRQn)) & 0x0FUL)-8UL) >> 2UL) ) | |
| 621 | #define _IP_IDX(IRQn) ( (((uint32_t)(int32_t)(IRQn)) >> 2UL) ) | |
| 622 | ||
| 623 | ||
| 624 | /** | |
| 625 | \brief Enable External Interrupt | |
| 626 | \details Enables a device-specific interrupt in the NVIC interrupt controller. | |
| 627 | \param [in] IRQn External interrupt number. Value cannot be negative. | |
| 628 | */ | |
| 629 | __STATIC_INLINE void NVIC_EnableIRQ(IRQn_Type IRQn) | |
| 630 | { | |
| 631 | NVIC->ISER[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL)); | |
| 632 | } | |
| 633 | ||
| 634 | ||
| 635 | /** | |
| 636 | \brief Disable External Interrupt | |
| 637 | \details Disables a device-specific interrupt in the NVIC interrupt controller. | |
| 638 | \param [in] IRQn External interrupt number. Value cannot be negative. | |
| 639 | */ | |
| 640 | __STATIC_INLINE void NVIC_DisableIRQ(IRQn_Type IRQn) | |
| 641 | { | |
| 642 | NVIC->ICER[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL)); | |
| 643 | } | |
| 644 | ||
| 645 | ||
| 646 | /** | |
| 647 | \brief Get Pending Interrupt | |
| 648 | \details Reads the pending register in the NVIC and returns the pending bit for the specified interrupt. | |
| 649 | \param [in] IRQn Interrupt number. | |
| 650 | \return 0 Interrupt status is not pending. | |
| 651 | \return 1 Interrupt status is pending. | |
| 652 | */ | |
| 653 | __STATIC_INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn) | |
| 654 | { | |
| 655 | return((uint32_t)(((NVIC->ISPR[0U] & (1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL)); | |
| 656 | } | |
| 657 | ||
| 658 | ||
| 659 | /** | |
| 660 | \brief Set Pending Interrupt | |
| 661 | \details Sets the pending bit of an external interrupt. | |
| 662 | \param [in] IRQn Interrupt number. Value cannot be negative. | |
| 663 | */ | |
| 664 | __STATIC_INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn) | |
| 665 | { | |
| 666 | NVIC->ISPR[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL)); | |
| 667 | } | |
| 668 | ||
| 669 | ||
| 670 | /** | |
| 671 | \brief Clear Pending Interrupt | |
| 672 | \details Clears the pending bit of an external interrupt. | |
| 673 | \param [in] IRQn External interrupt number. Value cannot be negative. | |
| 674 | */ | |
| 675 | __STATIC_INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn) | |
| 676 | { | |
| 677 | NVIC->ICPR[0U] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL)); | |
| 678 | } | |
| 679 | ||
| 680 | ||
| 681 | /** | |
| 682 | \brief Set Interrupt Priority | |
| 683 | \details Sets the priority of an interrupt. | |
| 684 | \note The priority cannot be set for every core interrupt. | |
| 685 | \param [in] IRQn Interrupt number. | |
| 686 | \param [in] priority Priority to set. | |
| 687 | */ | |
| 688 | __STATIC_INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority) | |
| 689 | { | |
| 690 | if ((int32_t)(IRQn) < 0) | |
| 691 | { | |
| 692 | SCB->SHP[_SHP_IDX(IRQn)] = ((uint32_t)(SCB->SHP[_SHP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) | | |
| 693 | (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn))); | |
| 694 | } | |
| 695 | else | |
| 696 | { | |
| 697 | NVIC->IP[_IP_IDX(IRQn)] = ((uint32_t)(NVIC->IP[_IP_IDX(IRQn)] & ~(0xFFUL << _BIT_SHIFT(IRQn))) | | |
| 698 | (((priority << (8U - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL) << _BIT_SHIFT(IRQn))); | |
| 699 | } | |
| 700 | } | |
| 701 | ||
| 702 | ||
| 703 | /** | |
| 704 | \brief Get Interrupt Priority | |
| 705 | \details Reads the priority of an interrupt. | |
| 706 | The interrupt number can be positive to specify an external (device specific) interrupt, | |
| 707 | or negative to specify an internal (core) interrupt. | |
| 708 | \param [in] IRQn Interrupt number. | |
| 709 | \return Interrupt Priority. | |
| 710 | Value is aligned automatically to the implemented priority bits of the microcontroller. | |
| 711 | */ | |
| 712 | __STATIC_INLINE uint32_t NVIC_GetPriority(IRQn_Type IRQn) | |
| 713 | { | |
| 714 | ||
| 715 | if ((int32_t)(IRQn) < 0) | |
| 716 | { | |
| 717 | return((uint32_t)(((SCB->SHP[_SHP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS))); | |
| 718 | } | |
| 719 | else | |
| 720 | { | |
| 721 | return((uint32_t)(((NVIC->IP[ _IP_IDX(IRQn)] >> _BIT_SHIFT(IRQn) ) & (uint32_t)0xFFUL) >> (8U - __NVIC_PRIO_BITS))); | |
| 722 | } | |
| 723 | } | |
| 724 | ||
| 725 | ||
| 726 | /** | |
| 727 | \brief System Reset | |
| 728 | \details Initiates a system reset request to reset the MCU. | |
| 729 | */ | |
| 730 | __STATIC_INLINE void NVIC_SystemReset(void) | |
| 731 | { | |
| 732 | __DSB(); /* Ensure all outstanding memory accesses included | |
| 733 | buffered write are completed before reset */ | |
| 734 | SCB->AIRCR = ((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) | | |
| 735 | SCB_AIRCR_SYSRESETREQ_Msk); | |
| 736 | __DSB(); /* Ensure completion of memory access */ | |
| 737 | ||
| 738 | for(;;) /* wait until reset */ | |
| 739 | { | |
| 740 | __NOP(); | |
| 741 | } | |
| 742 | } | |
| 743 | ||
| 744 | /*@} end of CMSIS_Core_NVICFunctions */ | |
| 745 | ||
| 746 | ||
| 747 | ||
| 748 | /* ################################## SysTick function ############################################ */ | |
| 749 | /** | |
| 750 | \ingroup CMSIS_Core_FunctionInterface | |
| 751 | \defgroup CMSIS_Core_SysTickFunctions SysTick Functions | |
| 752 | \brief Functions that configure the System. | |
| 753 | @{ | |
| 754 | */ | |
| 755 | ||
| 756 | #if (__Vendor_SysTickConfig == 0U) | |
| 757 | ||
| 758 | /** | |
| 759 | \brief System Tick Configuration | |
| 760 | \details Initializes the System Timer and its interrupt, and starts the System Tick Timer. | |
| 761 | Counter is in free running mode to generate periodic interrupts. | |
| 762 | \param [in] ticks Number of ticks between two interrupts. | |
| 763 | \return 0 Function succeeded. | |
| 764 | \return 1 Function failed. | |
| 765 | \note When the variable <b>__Vendor_SysTickConfig</b> is set to 1, then the | |
| 766 | function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b> | |
| 767 | must contain a vendor-specific implementation of this function. | |
| 768 | */ | |
| 769 | __STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks) | |
| 770 | { | |
| 771 | if ((ticks - 1UL) > SysTick_LOAD_RELOAD_Msk) | |
| 772 | { | |
| 773 | return (1UL); /* Reload value impossible */ | |
| 774 | } | |
| 775 | ||
| 776 | SysTick->LOAD = (uint32_t)(ticks - 1UL); /* set reload register */ | |
| 777 | NVIC_SetPriority (SysTick_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL); /* set Priority for Systick Interrupt */ | |
| 778 | SysTick->VAL = 0UL; /* Load the SysTick Counter Value */ | |
| 779 | SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | | |
| 780 | SysTick_CTRL_TICKINT_Msk | | |
| 781 | SysTick_CTRL_ENABLE_Msk; /* Enable SysTick IRQ and SysTick Timer */ | |
| 782 | return (0UL); /* Function successful */ | |
| 783 | } | |
| 784 | ||
| 785 | #endif | |
| 786 | ||
| 787 | /*@} end of CMSIS_Core_SysTickFunctions */ | |
| 788 | ||
| 789 | ||
| 790 | ||
| 791 | ||
| 792 | #ifdef __cplusplus | |
| 793 | } | |
| 794 | #endif | |
| 795 | ||
| 796 | #endif /* __CORE_CM0_H_DEPENDANT */ | |
| 797 | ||
| 798 | #endif /* __CMSIS_GENERIC */ | |
