core_cm0.h 33 KB

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