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Diff: libs/LPC17xx/score_cm3.h
- Revision:
- 3:f151d08d335c
- Parent:
- 2:1df0b61d3b5a
--- a/libs/LPC17xx/score_cm3.h Fri Feb 28 18:52:52 2014 -0800 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,899 +0,0 @@ -/****************************************************************************** - * @file: core_cm3.h - * @purpose: CMSIS Cortex-M3 Core Peripheral Access Layer Header File - * @version: V1.30 PRE-RELEASE - * @date: 30. July 2009 - *---------------------------------------------------------------------------- - * - * Copyright (C) 2009 ARM Limited. All rights reserved. - * - * ARM Limited (ARM) is supplying this software for use with Cortex-Mx - * processor based microcontrollers. This file can be freely distributed - * within development tools that are supporting such ARM based processors. - * - * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED - * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. - * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR - * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER. - * - ******************************************************************************/ - -#ifndef __CM3_CORE_H__ -#define __CM3_CORE_H__ - -#ifdef __cplusplus - extern "C" { -#endif - -#define __CM3_CMSIS_VERSION_MAIN (0x01) /*!< [31:16] CMSIS HAL main version */ -#define __CM3_CMSIS_VERSION_SUB (0x30) /*!< [15:0] CMSIS HAL sub version */ -#define __CM3_CMSIS_VERSION ((__CM3_CMSIS_VERSION_MAIN << 16) | __CM3_CMSIS_VERSION_SUB) /*!< CMSIS HAL version number */ - -#define __CORTEX_M (0x03) /*!< Cortex core */ - -/** - * Lint configuration \n - * ----------------------- \n - * - * The following Lint messages will be suppressed and not shown: \n - * \n - * --- Error 10: --- \n - * register uint32_t __regBasePri __asm("basepri"); \n - * Error 10: Expecting ';' \n - * \n - * --- Error 530: --- \n - * return(__regBasePri); \n - * Warning 530: Symbol '__regBasePri' (line 264) not initialized \n - * \n - * --- Error 550: --- \n - * __regBasePri = (basePri & 0x1ff); \n - * } \n - * Warning 550: Symbol '__regBasePri' (line 271) not accessed \n - * \n - * --- Error 754: --- \n - * uint32_t RESERVED0[24]; \n - * Info 754: local structure member '<some, not used in the HAL>' (line 109, file ./cm3_core.h) not referenced \n - * \n - * --- Error 750: --- \n - * #define __CM3_CORE_H__ \n - * Info 750: local macro '__CM3_CORE_H__' (line 43, file./cm3_core.h) not referenced \n - * \n - * --- Error 528: --- \n - * static __INLINE void NVIC_DisableIRQ(uint32_t IRQn) \n - * Warning 528: Symbol 'NVIC_DisableIRQ(unsigned int)' (line 419, file ./cm3_core.h) not referenced \n - * \n - * --- Error 751: --- \n - * } InterruptType_Type; \n - * Info 751: local typedef 'InterruptType_Type' (line 170, file ./cm3_core.h) not referenced \n - * \n - * \n - * Note: To re-enable a Message, insert a space before 'lint' * \n - * - */ - -/*lint -save */ -/*lint -e10 */ -/*lint -e530 */ -/*lint -e550 */ -/*lint -e754 */ -/*lint -e750 */ -/*lint -e528 */ -/*lint -e751 */ - - -#include <stdint.h> /* Include standard types */ - -#if defined (__ICCARM__) - #include <intrinsics.h> /* IAR Intrinsics */ -#endif - - -#ifndef __NVIC_PRIO_BITS - #define __NVIC_PRIO_BITS 4 /*!< standard definition for NVIC Priority Bits */ -#endif - - - - -/** - * IO definitions - * - * define access restrictions to peripheral registers - */ - -#ifdef __cplusplus -#define __I volatile /*!< defines 'read only' permissions */ -#else -#define __I volatile const /*!< defines 'read only' permissions */ -#endif -#define __O volatile /*!< defines 'write only' permissions */ -#define __IO volatile /*!< defines 'read / write' permissions */ - - - -/******************************************************************************* - * Register Abstraction - ******************************************************************************/ - - -/* System Reset */ -#define NVIC_VECTRESET 0 /*!< Vector Reset Bit */ -#define NVIC_SYSRESETREQ 2 /*!< System Reset Request */ -#define NVIC_AIRCR_VECTKEY (0x5FA << 16) /*!< AIRCR Key for write access */ -#define NVIC_AIRCR_ENDIANESS 15 /*!< Endianess */ - -/* Core Debug */ -#define CoreDebug_DEMCR_TRCENA (1 << 24) /*!< DEMCR TRCENA enable */ -#define ITM_TCR_ITMENA 1 /*!< ITM enable */ - - - - -/* memory mapping struct for Nested Vectored Interrupt Controller (NVIC) */ -typedef struct -{ - __IO uint32_t ISER[8]; /*!< Interrupt Set Enable Register */ - uint32_t RESERVED0[24]; - __IO uint32_t ICER[8]; /*!< Interrupt Clear Enable Register */ - uint32_t RSERVED1[24]; - __IO uint32_t ISPR[8]; /*!< Interrupt Set Pending Register */ - uint32_t RESERVED2[24]; - __IO uint32_t ICPR[8]; /*!< Interrupt Clear Pending Register */ - uint32_t RESERVED3[24]; - __IO uint32_t IABR[8]; /*!< Interrupt Active bit Register */ - uint32_t RESERVED4[56]; - __IO uint8_t IP[240]; /*!< Interrupt Priority Register, 8Bit wide */ - uint32_t RESERVED5[644]; - __O uint32_t STIR; /*!< Software Trigger Interrupt Register */ -} NVIC_Type; - - -/* memory mapping struct for System Control Block */ -typedef struct -{ - __I uint32_t CPUID; /*!< CPU ID Base Register */ - __IO uint32_t ICSR; /*!< Interrupt Control State Register */ - __IO uint32_t VTOR; /*!< Vector Table Offset Register */ - __IO uint32_t AIRCR; /*!< Application Interrupt / Reset Control Register */ - __IO uint32_t SCR; /*!< System Control Register */ - __IO uint32_t CCR; /*!< Configuration Control Register */ - __IO uint8_t SHP[12]; /*!< System Handlers Priority Registers (4-7, 8-11, 12-15) */ - __IO uint32_t SHCSR; /*!< System Handler Control and State Register */ - __IO uint32_t CFSR; /*!< Configurable Fault Status Register */ - __IO uint32_t HFSR; /*!< Hard Fault Status Register */ - __IO uint32_t DFSR; /*!< Debug Fault Status Register */ - __IO uint32_t MMFAR; /*!< Mem Manage Address Register */ - __IO uint32_t BFAR; /*!< Bus Fault Address Register */ - __IO uint32_t AFSR; /*!< Auxiliary Fault Status Register */ - __I uint32_t PFR[2]; /*!< Processor Feature Register */ - __I uint32_t DFR; /*!< Debug Feature Register */ - __I uint32_t ADR; /*!< Auxiliary Feature Register */ - __I uint32_t MMFR[4]; /*!< Memory Model Feature Register */ - __I uint32_t ISAR[5]; /*!< ISA Feature Register */ -} SCB_Type; - - -/* memory mapping struct for SysTick */ -typedef struct -{ - __IO uint32_t CTRL; /*!< SysTick Control and Status Register */ - __IO uint32_t LOAD; /*!< SysTick Reload Value Register */ - __IO uint32_t VAL; /*!< SysTick Current Value Register */ - __I uint32_t CALIB; /*!< SysTick Calibration Register */ -} SysTick_Type; - - -/* memory mapping structur for ITM */ -typedef struct -{ - __O union - { - __O uint8_t u8; /*!< ITM Stimulus Port 8-bit */ - __O uint16_t u16; /*!< ITM Stimulus Port 16-bit */ - __O uint32_t u32; /*!< ITM Stimulus Port 32-bit */ - } PORT [32]; /*!< ITM Stimulus Port Registers */ - uint32_t RESERVED0[864]; - __IO uint32_t TER; /*!< ITM Trace Enable Register */ - uint32_t RESERVED1[15]; - __IO uint32_t TPR; /*!< ITM Trace Privilege Register */ - uint32_t RESERVED2[15]; - __IO uint32_t TCR; /*!< ITM Trace Control Register */ - uint32_t RESERVED3[29]; - __IO uint32_t IWR; /*!< ITM Integration Write Register */ - __IO uint32_t IRR; /*!< ITM Integration Read Register */ - __IO uint32_t IMCR; /*!< ITM Integration Mode Control Register */ - uint32_t RESERVED4[43]; - __IO uint32_t LAR; /*!< ITM Lock Access Register */ - __IO uint32_t LSR; /*!< ITM Lock Status Register */ - uint32_t RESERVED5[6]; - __I uint32_t PID4; /*!< ITM Product ID Registers */ - __I uint32_t PID5; - __I uint32_t PID6; - __I uint32_t PID7; - __I uint32_t PID0; - __I uint32_t PID1; - __I uint32_t PID2; - __I uint32_t PID3; - __I uint32_t CID0; - __I uint32_t CID1; - __I uint32_t CID2; - __I uint32_t CID3; -} ITM_Type; - - -/* memory mapped struct for Interrupt Type */ -typedef struct -{ - uint32_t RESERVED0; - __I uint32_t ICTR; /*!< Interrupt Control Type Register */ -#if ((defined __CM3_REV) && (__CM3_REV >= 0x200)) - __IO uint32_t ACTLR; /*!< Auxiliary Control Register */ -#else - uint32_t RESERVED1; -#endif -} InterruptType_Type; - - -/* Memory Protection Unit */ -#if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1) -typedef struct -{ - __I uint32_t TYPE; /*!< MPU Type Register */ - __IO uint32_t CTRL; /*!< MPU Control Register */ - __IO uint32_t RNR; /*!< MPU Region RNRber Register */ - __IO uint32_t RBAR; /*!< MPU Region Base Address Register */ - __IO uint32_t RASR; /*!< MPU Region Attribute and Size Register */ - __IO uint32_t RBAR_A1; /*!< MPU Alias 1 Region Base Address Register */ - __IO uint32_t RASR_A1; /*!< MPU Alias 1 Region Attribute and Size Register */ - __IO uint32_t RBAR_A2; /*!< MPU Alias 2 Region Base Address Register */ - __IO uint32_t RASR_A2; /*!< MPU Alias 2 Region Attribute and Size Register */ - __IO uint32_t RBAR_A3; /*!< MPU Alias 3 Region Base Address Register */ - __IO uint32_t RASR_A3; /*!< MPU Alias 3 Region Attribute and Size Register */ -} MPU_Type; -#endif - - -/* Core Debug Register */ -typedef struct -{ - __IO uint32_t DHCSR; /*!< Debug Halting Control and Status Register */ - __O uint32_t DCRSR; /*!< Debug Core Register Selector Register */ - __IO uint32_t DCRDR; /*!< Debug Core Register Data Register */ - __IO uint32_t DEMCR; /*!< Debug Exception and Monitor Control Register */ -} CoreDebug_Type; - - -/* Memory mapping of Cortex-M3 Hardware */ -#define SCS_BASE (0xE000E000) /*!< System Control Space Base Address */ -#define ITM_BASE (0xE0000000) /*!< ITM Base Address */ -#define CoreDebug_BASE (0xE000EDF0) /*!< Core Debug Base Address */ -#define SysTick_BASE (SCS_BASE + 0x0010) /*!< SysTick Base Address */ -#define NVIC_BASE (SCS_BASE + 0x0100) /*!< NVIC Base Address */ -#define SCB_BASE (SCS_BASE + 0x0D00) /*!< System Control Block Base Address */ - -#define InterruptType ((InterruptType_Type *) SCS_BASE) /*!< Interrupt Type Register */ -#define SCB ((SCB_Type *) SCB_BASE) /*!< SCB configuration struct */ -#define SysTick ((SysTick_Type *) SysTick_BASE) /*!< SysTick configuration struct */ -#define NVIC ((NVIC_Type *) NVIC_BASE) /*!< NVIC configuration struct */ -#define ITM ((ITM_Type *) ITM_BASE) /*!< ITM configuration struct */ -#define CoreDebug ((CoreDebug_Type *) CoreDebug_BASE) /*!< Core Debug configuration struct */ - -#if defined (__MPU_PRESENT) && (__MPU_PRESENT == 1) - #define MPU_BASE (SCS_BASE + 0x0D90) /*!< Memory Protection Unit */ - #define MPU ((MPU_Type*) MPU_BASE) /*!< Memory Protection Unit */ -#endif - - -/******************************************************************************* - * Hardware Abstraction Layer - ******************************************************************************/ - - -#if defined ( __CC_ARM ) - #define __ASM __asm /*!< asm keyword for ARM Compiler */ - #define __INLINE __inline /*!< inline keyword for ARM Compiler */ - -#elif defined ( __ICCARM__ ) - #define __ASM __asm /*!< asm keyword for IAR Compiler */ - #define __INLINE inline /*!< inline keyword for IAR Compiler. Only avaiable in High optimization mode! */ - -#elif defined ( __GNUC__ ) - #define __ASM __asm /*!< asm keyword for GNU Compiler */ - #define __INLINE inline /*!< inline keyword for GNU Compiler */ - -#elif defined ( __TASKING__ ) - #define __ASM __asm /*!< asm keyword for TASKING Compiler */ - #define __INLINE inline /*!< inline keyword for TASKING Compiler */ - -#endif - - -/* ################### Compiler specific Intrinsics ########################### */ - -#if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/ -/* ARM armcc specific functions */ - -#define __enable_fault_irq __enable_fiq -#define __disable_fault_irq __disable_fiq - -#define __NOP __nop -#define __WFI __wfi -#define __WFE __wfe -#define __SEV __sev -#define __ISB() __isb(0) -#define __DSB() __dsb(0) -#define __DMB() __dmb(0) -#define __REV __rev -#define __RBIT __rbit -#define __LDREXB(ptr) ((unsigned char ) __ldrex(ptr)) -#define __LDREXH(ptr) ((unsigned short) __ldrex(ptr)) -#define __LDREXW(ptr) ((unsigned int ) __ldrex(ptr)) -#define __STREXB(value, ptr) __strex(value, ptr) -#define __STREXH(value, ptr) __strex(value, ptr) -#define __STREXW(value, ptr) __strex(value, ptr) - - -/* intrinsic unsigned long long __ldrexd(volatile void *ptr) */ -/* intrinsic int __strexd(unsigned long long val, volatile void *ptr) */ -/* intrinsic void __enable_irq(); */ -/* intrinsic void __disable_irq(); */ - - -#if (__ARMCC_VERSION < 400000) - -#else /* (__ARMCC_VERSION >= 400000) */ - - -/** - * @brief Remove the exclusive lock created by ldrex - * - * @param none - * @return none - * - * Removes the exclusive lock which is created by ldrex. - */ -#define __CLREX __clrex - -/** - * @brief Return the Base Priority value - * - * @param none - * @return uint32_t BasePriority - * - * Return the content of the base priority register - */ -static __INLINE uint32_t __get_BASEPRI(void) -{ - register uint32_t __regBasePri __ASM("basepri"); - return(__regBasePri); -} - -/** - * @brief Set the Base Priority value - * - * @param uint32_t BasePriority - * @return none - * - * Set the base priority register - */ -static __INLINE void __set_BASEPRI(uint32_t basePri) -{ - register uint32_t __regBasePri __ASM("basepri"); - __regBasePri = (basePri & 0xff); -} - -/** - * @brief Return the Priority Mask value - * - * @param none - * @return uint32_t PriMask - * - * Return the state of the priority mask bit from the priority mask - * register - */ -static __INLINE uint32_t __get_PRIMASK(void) -{ - register uint32_t __regPriMask __ASM("primask"); - return(__regPriMask); -} - -/** - * @brief Set the Priority Mask value - * - * @param uint32_t PriMask - * @return none - * - * Set the priority mask bit in the priority mask register - */ -static __INLINE void __set_PRIMASK(uint32_t priMask) -{ - register uint32_t __regPriMask __ASM("primask"); - __regPriMask = (priMask); -} - -/** - * @brief Return the Fault Mask value - * - * @param none - * @return uint32_t FaultMask - * - * Return the content of the fault mask register - */ -static __INLINE uint32_t __get_FAULTMASK(void) -{ - register uint32_t __regFaultMask __ASM("faultmask"); - return(__regFaultMask); -} - -/** - * @brief Set the Fault Mask value - * - * @param uint32_t faultMask value - * @return none - * - * Set the fault mask register - */ -static __INLINE void __set_FAULTMASK(uint32_t faultMask) -{ - register uint32_t __regFaultMask __ASM("faultmask"); - __regFaultMask = (faultMask & 1); -} - -/** - * @brief Return the Control Register value - * - * @param none - * @return uint32_t Control value - * - * Return the content of the control register - */ -static __INLINE uint32_t __get_CONTROL(void) -{ - register uint32_t __regControl __ASM("control"); - return(__regControl); -} - -/** - * @brief Set the Control Register value - * - * @param uint32_t Control value - * @return none - * - * Set the control register - */ -static __INLINE void __set_CONTROL(uint32_t control) -{ - register uint32_t __regControl __ASM("control"); - __regControl = control; -} - -#endif /* __ARMCC_VERSION */ - - - -#elif (defined (__ICCARM__)) /*------------------ ICC Compiler -------------------*/ -/* IAR iccarm specific functions */ - -#define __enable_irq __enable_interrupt /*!< global Interrupt enable */ -#define __disable_irq __disable_interrupt /*!< global Interrupt disable */ - -static __INLINE void __enable_fault_irq() { __ASM ("cpsie f"); } -static __INLINE void __disable_fault_irq() { __ASM ("cpsid f"); } - -#define __NOP __no_operation() /*!< no operation intrinsic in IAR Compiler */ -static __INLINE void __WFI() { __ASM ("wfi"); } -static __INLINE void __WFE() { __ASM ("wfe"); } -static __INLINE void __SEV() { __ASM ("sev"); } -static __INLINE void __CLREX() { __ASM ("clrex"); } - -/* intrinsic void __ISB(void) */ -/* intrinsic void __DSB(void) */ -/* intrinsic void __DMB(void) */ -/* intrinsic void __set_PRIMASK(); */ -/* intrinsic void __get_PRIMASK(); */ -/* intrinsic void __set_FAULTMASK(); */ -/* intrinsic void __get_FAULTMASK(); */ -/* intrinsic uint32_t __REV(uint32_t value); */ -/* intrinsic uint32_t __REVSH(uint32_t value); */ -/* intrinsic unsigned long __STREX(unsigned long, unsigned long); */ -/* intrinsic unsigned long __LDREX(unsigned long *); */ - - -#elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/ -/* GNU gcc specific functions */ - -static __INLINE void __enable_irq() { __ASM volatile ("cpsie i"); } -static __INLINE void __disable_irq() { __ASM volatile ("cpsid i"); } - -static __INLINE void __enable_fault_irq() { __ASM volatile ("cpsie f"); } -static __INLINE void __disable_fault_irq() { __ASM volatile ("cpsid f"); } - -static __INLINE void __NOP() { __ASM volatile ("nop"); } -static __INLINE void __WFI() { __ASM volatile ("wfi"); } -static __INLINE void __WFE() { __ASM volatile ("wfe"); } -static __INLINE void __SEV() { __ASM volatile ("sev"); } -static __INLINE void __ISB() { __ASM volatile ("isb"); } -static __INLINE void __DSB() { __ASM volatile ("dsb"); } -static __INLINE void __DMB() { __ASM volatile ("dmb"); } -static __INLINE void __CLREX() { __ASM volatile ("clrex"); } - - -#elif (defined (__TASKING__)) /*------------------ TASKING Compiler ---------------------*/ -/* TASKING carm specific functions */ - -/* - * The CMSIS functions have been implemented as intrinsics in the compiler. - * Please use "carm -?i" to get an up to date list of all instrinsics, - * Including the CMSIS ones. - */ - -#endif - - - -/* ########################## NVIC functions #################################### */ - - -/** - * @brief Set the Priority Grouping in NVIC Interrupt Controller - * - * @param uint32_t priority_grouping is priority grouping field - * @return none - * - * Set the priority grouping field using the required unlock sequence. - * The parameter priority_grouping is assigned to the field - * SCB->AIRCR [10:8] PRIGROUP field. Only values from 0..7 are used. - * In case of a conflict between priority grouping and available - * priority bits (__NVIC_PRIO_BITS) the smallest possible priority group is set. - */ -static __INLINE void NVIC_SetPriorityGrouping(uint32_t PriorityGroup) -{ - uint32_t reg_value; - uint32_t PriorityGroupTmp = (PriorityGroup & 0x07); /* only values 0..7 are used */ - - reg_value = SCB->AIRCR; /* read old register configuration */ - reg_value &= ~((0xFFFFU << 16) | (0x0F << 8)); /* clear bits to change */ - reg_value = ((reg_value | NVIC_AIRCR_VECTKEY | (PriorityGroupTmp << 8))); /* Insert write key and priorty group */ - SCB->AIRCR = reg_value; -} - -/** - * @brief Get the Priority Grouping from NVIC Interrupt Controller - * - * @param none - * @return uint32_t priority grouping field - * - * Get the priority grouping from NVIC Interrupt Controller. - * priority grouping is SCB->AIRCR [10:8] PRIGROUP field. - */ -static __INLINE uint32_t NVIC_GetPriorityGrouping(void) -{ - return ((SCB->AIRCR >> 8) & 0x07); /* read priority grouping field */ -} - -/** - * @brief Enable Interrupt in NVIC Interrupt Controller - * - * @param IRQn_Type IRQn specifies the interrupt number - * @return none - * - * Enable a device specific interupt in the NVIC interrupt controller. - * The interrupt number cannot be a negative value. - */ -static __INLINE void NVIC_EnableIRQ(IRQn_Type IRQn) -{ - NVIC->ISER[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); /* enable interrupt */ -} - -/** - * @brief Disable the interrupt line for external interrupt specified - * - * @param IRQn_Type IRQn is the positive number of the external interrupt - * @return none - * - * Disable a device specific interupt in the NVIC interrupt controller. - * The interrupt number cannot be a negative value. - */ -static __INLINE void NVIC_DisableIRQ(IRQn_Type IRQn) -{ - NVIC->ICER[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); /* disable interrupt */ -} - -/** - * @brief Read the interrupt pending bit for a device specific interrupt source - * - * @param IRQn_Type IRQn is the number of the device specifc interrupt - * @return uint32_t 1 if pending interrupt else 0 - * - * Read the pending register in NVIC and return 1 if its status is pending, - * otherwise it returns 0 - */ -static __INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn) -{ - return((uint32_t) ((NVIC->ISPR[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0)); /* Return 1 if pending else 0 */ -} - -/** - * @brief Set the pending bit for an external interrupt - * - * @param IRQn_Type IRQn is the Number of the interrupt - * @return none - * - * Set the pending bit for the specified interrupt. - * The interrupt number cannot be a negative value. - */ -static __INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn) -{ - NVIC->ISPR[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); /* set interrupt pending */ -} - -/** - * @brief Clear the pending bit for an external interrupt - * - * @param IRQn_Type IRQn is the Number of the interrupt - * @return none - * - * Clear the pending bit for the specified interrupt. - * The interrupt number cannot be a negative value. - */ -static __INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn) -{ - NVIC->ICPR[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F)); /* Clear pending interrupt */ -} - -/** - * @brief Read the active bit for an external interrupt - * - * @param IRQn_Type IRQn is the Number of the interrupt - * @return uint32_t 1 if active else 0 - * - * Read the active register in NVIC and returns 1 if its status is active, - * otherwise it returns 0. - */ -static __INLINE uint32_t NVIC_GetActive(IRQn_Type IRQn) -{ - return((uint32_t)((NVIC->IABR[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0)); /* Return 1 if active else 0 */ -} - -/** - * @brief Set the priority for an interrupt - * - * @param IRQn_Type IRQn is the Number of the interrupt - * @param priority is the priority for the interrupt - * @return none - * - * Set the priority for the specified interrupt. The interrupt - * number can be positive to specify an external (device specific) - * interrupt, or negative to specify an internal (core) interrupt. \n - * - * Note: The priority cannot be set for every core interrupt. - */ -static __INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority) -{ - if(IRQn < 0) { - SCB->SHP[((uint32_t)(IRQn) & 0xF)-4] = ((priority << (8 - __NVIC_PRIO_BITS)) & 0xff); } /* set Priority for Cortex-M3 System Interrupts */ - else { - NVIC->IP[(uint32_t)(IRQn)] = ((priority << (8 - __NVIC_PRIO_BITS)) & 0xff); } /* set Priority for device specific Interrupts */ -} - -/** - * @brief Read the priority for an interrupt - * - * @param IRQn_Type IRQn is the Number of the interrupt - * @return uint32_t priority is the priority for the interrupt - * - * Read the priority for the specified interrupt. The interrupt - * number can be positive to specify an external (device specific) - * interrupt, or negative to specify an internal (core) interrupt. - * - * The returned priority value is automatically aligned to the implemented - * priority bits of the microcontroller. - * - * Note: The priority cannot be set for every core interrupt. - */ -static __INLINE uint32_t NVIC_GetPriority(IRQn_Type IRQn) -{ - - if(IRQn < 0) { - return((uint32_t)(SCB->SHP[((uint32_t)(IRQn) & 0xF)-4] >> (8 - __NVIC_PRIO_BITS))); } /* get priority for Cortex-M3 system interrupts */ - else { - return((uint32_t)(NVIC->IP[(uint32_t)(IRQn)] >> (8 - __NVIC_PRIO_BITS))); } /* get priority for device specific interrupts */ -} - - -/** - * @brief Encode the priority for an interrupt - * - * @param uint32_t PriorityGroup is the used priority group - * @param uint32_t PreemptPriority is the preemptive priority value (starting from 0) - * @param uint32_t SubPriority is the sub priority value (starting from 0) - * @return uint32_t the priority for the interrupt - * - * Encode the priority for an interrupt with the given priority group, - * preemptive priority value and sub priority value. - * In case of a conflict between priority grouping and available - * priority bits (__NVIC_PRIO_BITS) the samllest possible priority group is set. - * - * The returned priority value can be used for NVIC_SetPriority(...) function - */ -static __INLINE uint32_t NVIC_EncodePriority (uint32_t PriorityGroup, uint32_t PreemptPriority, uint32_t SubPriority) -{ - uint32_t PriorityGroupTmp = (PriorityGroup & 0x07); /* only values 0..7 are used */ - uint32_t PreemptPriorityBits; - uint32_t SubPriorityBits; - - PreemptPriorityBits = ((7 - PriorityGroupTmp) > __NVIC_PRIO_BITS) ? __NVIC_PRIO_BITS : 7 - PriorityGroupTmp; - SubPriorityBits = ((PriorityGroupTmp + __NVIC_PRIO_BITS) < 7) ? 0 : PriorityGroupTmp - 7 + __NVIC_PRIO_BITS; - - return ( - ((PreemptPriority & ((1 << (PreemptPriorityBits)) - 1)) << SubPriorityBits) | - ((SubPriority & ((1 << (SubPriorityBits )) - 1))) - ); -} - - -/** - * @brief Decode the priority of an interrupt - * - * @param uint32_t Priority the priority for the interrupt - * @param uint32_t PrioGroup is the used priority group - * @param uint32_t* pPreemptPrio is the preemptive priority value (starting from 0) - * @param uint32_t* pSubPrio is the sub priority value (starting from 0) - * @return none - * - * Decode an interrupt priority value with the given priority group to - * preemptive priority value and sub priority value. - * In case of a conflict between priority grouping and available - * priority bits (__NVIC_PRIO_BITS) the samllest possible priority group is set. - * - * The priority value can be retrieved with NVIC_GetPriority(...) function - */ -static __INLINE void NVIC_DecodePriority (uint32_t Priority, uint32_t PriorityGroup, uint32_t* pPreemptPriority, uint32_t* pSubPriority) -{ - uint32_t PriorityGroupTmp = (PriorityGroup & 0x07); /* only values 0..7 are used */ - uint32_t PreemptPriorityBits; - uint32_t SubPriorityBits; - - PreemptPriorityBits = ((7 - PriorityGroupTmp) > __NVIC_PRIO_BITS) ? __NVIC_PRIO_BITS : 7 - PriorityGroupTmp; - SubPriorityBits = ((PriorityGroupTmp + __NVIC_PRIO_BITS) < 7) ? 0 : PriorityGroupTmp - 7 + __NVIC_PRIO_BITS; - - *pPreemptPriority = (Priority >> SubPriorityBits) & ((1 << (PreemptPriorityBits)) - 1); - *pSubPriority = (Priority ) & ((1 << (SubPriorityBits )) - 1); -} - - - -/* ################################## SysTick function ############################################ */ - -#if (!defined (__Vendor_SysTickConfig)) || (__Vendor_SysTickConfig == 0) - -/* SysTick constants */ -#define SYSTICK_ENABLE 0 /* Config-Bit to start or stop the SysTick Timer */ -#define SYSTICK_TICKINT 1 /* Config-Bit to enable or disable the SysTick interrupt */ -#define SYSTICK_CLKSOURCE 2 /* Clocksource has the offset 2 in SysTick Control and Status Register */ -#define SYSTICK_MAXCOUNT ((1<<24) -1) /* SysTick MaxCount */ - -/** - * @brief Initialize and start the SysTick counter and its interrupt. - * - * @param uint32_t ticks is the number of ticks between two interrupts - * @return none - * - * Initialise the system tick timer and its interrupt and start the - * system tick timer / counter in free running mode to generate - * periodical interrupts. - */ -static __INLINE uint32_t SysTick_Config(uint32_t ticks) -{ - if (ticks > SYSTICK_MAXCOUNT) return (1); /* Reload value impossible */ - - SysTick->LOAD = (ticks & SYSTICK_MAXCOUNT) - 1; /* set reload register */ - NVIC_SetPriority (SysTick_IRQn, (1<<__NVIC_PRIO_BITS) - 1); /* set Priority for Cortex-M0 System Interrupts */ - SysTick->VAL = (0x00); /* Load the SysTick Counter Value */ - SysTick->CTRL = (1 << SYSTICK_CLKSOURCE) | (1<<SYSTICK_ENABLE) | (1<<SYSTICK_TICKINT); /* Enable SysTick IRQ and SysTick Timer */ - return (0); /* Function successful */ -} - -#endif - - - - - -/* ################################## Reset function ############################################ */ - -/** - * @brief Initiate a system reset request. - * - * @param none - * @return none - * - * Initialize a system reset request to reset the MCU - */ -static __INLINE void NVIC_SystemReset(void) -{ - SCB->AIRCR = (NVIC_AIRCR_VECTKEY | (SCB->AIRCR & (0x700)) | (1<<NVIC_SYSRESETREQ)); /* Keep priority group unchanged */ - __DSB(); /* Ensure completion of memory access */ - while(1); /* wait until reset */ -} - - -/* ##################################### Debug In/Output function ########################################### */ - -extern volatile int ITM_RxBuffer; /* variable to receive characters */ -#define ITM_RXBUFFER_EMPTY 0x5AA55AA5 /* value identifying ITM_RxBuffer is ready for next character */ - - -/** - * @brief Outputs a character via the ITM channel 0 - * - * @param uint32_t character to output - * @return uint32_t input character - * - * The function outputs a character via the ITM channel 0. - * The function returns when no debugger is connected that has booked the output. - * It is blocking when a debugger is connected, but the previous character send is not transmitted. - */ -static __INLINE uint32_t ITM_SendChar (uint32_t ch) -{ - if ((CoreDebug->DEMCR & CoreDebug_DEMCR_TRCENA) && - (ITM->TCR & ITM_TCR_ITMENA) && - (ITM->TER & (1UL << 0)) ) - { - while (ITM->PORT[0].u32 == 0); - ITM->PORT[0].u8 = (uint8_t) ch; - } - return (ch); -} - - -/** - * @brief Inputs a character via variable ITM_RxBuffer - * - * @param none - * @return uint32_t input character - * - * The function inputs a character via variable ITM_RxBuffer. - * The function returns when no debugger is connected that has booked the output. - * It is blocking when a debugger is connected, but the previous character send is not transmitted. - */ -static __INLINE int ITM_ReceiveChar (void) { - int ch = -1; /* no character available */ - - if (ITM_RxBuffer != ITM_RXBUFFER_EMPTY) { - ch = ITM_RxBuffer; - ITM_RxBuffer = ITM_RXBUFFER_EMPTY; /* ready for next character */ - } - - return (ch); -} - - -/** - * @brief Check if a character via variable ITM_RxBuffer is available - * - * @param none - * @return int 1 = character available, 0 = no character available - * - * The function checks variable ITM_RxBuffer whether a character is available or not. - * The function returns '1' if a character is available and '0' if no character is available. - */ -static __INLINE int ITM_CheckChar (void) { - - if (ITM_RxBuffer == ITM_RXBUFFER_EMPTY) { - return (0); /* no character available */ - } else { - return (1); /* character available */ - } -} - - - -#ifdef __cplusplus -} -#endif - -#endif /* __CM3_CORE_H__ */ - -/*lint -restore */