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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file ARMCMx/nvic.h
* @brief Cortex-Mx NVIC support macros and structures.
*
* @addtogroup ARMCMx_NVIC
* @{
*/
#ifndef _NVIC_H_
#define _NVIC_H_
/*
* System vector constants for @p NVICSetSystemHandlerPriority().
*/
#define HANDLER_MEM_MANAGE 0 /**< MEM MANAGE vector id. */
#define HANDLER_BUS_FAULT 1 /**< BUS FAULT vector id. */
#define HANDLER_USAGE_FAULT 2 /**< USAGE FAULT vector id. */
#define HANDLER_RESERVED_3 3
#define HANDLER_RESERVED_4 4
#define HANDLER_RESERVED_5 5
#define HANDLER_RESERVED_6 6
#define HANDLER_SVCALL 7 /**< SVCALL vector id. */
#define HANDLER_DEBUG_MONITOR 8 /**< DEBUG MONITOR vector id. */
#define HANDLER_RESERVED_9 9
#define HANDLER_PENDSV 10 /**< PENDSV vector id. */
#define HANDLER_SYSTICK 11 /**< SYS TCK vector id. */
typedef volatile uint8_t IOREG8; /**< 8 bits I/O register type. */
typedef volatile uint32_t IOREG32; /**< 32 bits I/O register type. */
/**
* @brief NVIC ITCR register.
*/
#define NVIC_ITCR (*((IOREG32 *)0xE000E004))
/**
* @brief NVIC STIR register.
*/
#define NVIC_STIR (*((IOREG32 *)0xE000EF00))
/**
* @brief Structure representing the SYSTICK I/O space.
*/
typedef struct {
IOREG32 CSR;
IOREG32 RVR;
IOREG32 CVR;
IOREG32 CBVR;
} CM3_ST;
/**
* @brief SYSTICK peripheral base address.
*/
#define STBase ((CM3_ST *)0xE000E010)
#define ST_CSR (STBase->CSR)
#define ST_RVR (STBase->RVR)
#define ST_CVR (STBase->CVR)
#define ST_CBVR (STBase->CBVR)
#define CSR_ENABLE_MASK (0x1 << 0)
#define ENABLE_OFF_BITS (0 << 0)
#define ENABLE_ON_BITS (1 << 0)
#define CSR_TICKINT_MASK (0x1 << 1)
#define TICKINT_DISABLED_BITS (0 << 1)
#define TICKINT_ENABLED_BITS (1 << 1)
#define CSR_CLKSOURCE_MASK (0x1 << 2)
#define CLKSOURCE_EXT_BITS (0 << 2)
#define CLKSOURCE_CORE_BITS (1 << 2)
#define CSR_COUNTFLAG_MASK (0x1 << 16)
#define RVR_RELOAD_MASK (0xFFFFFF << 0)
#define CVR_CURRENT_MASK (0xFFFFFF << 0)
#define CBVR_TENMS_MASK (0xFFFFFF << 0)
#define CBVR_SKEW_MASK (0x1 << 30)
#define CBVR_NOREF_MASK (0x1 << 31)
/**
* @brief Structure representing the NVIC I/O space.
*/
typedef struct {
IOREG32 ISER[8];
IOREG32 unused1[24];
IOREG32 ICER[8];
IOREG32 unused2[24];
IOREG32 ISPR[8];
IOREG32 unused3[24];
IOREG32 ICPR[8];
IOREG32 unused4[24];
IOREG32 IABR[8];
IOREG32 unused5[56];
IOREG32 IPR[60];
} CM3_NVIC;
/**
* @brief NVIC peripheral base address.
*/
#define NVICBase ((CM3_NVIC *)0xE000E100)
#define NVIC_ISER(n) (NVICBase->ISER[n])
#define NVIC_ICER(n) (NVICBase->ICER[n])
#define NVIC_ISPR(n) (NVICBase->ISPR[n])
#define NVIC_ICPR(n) (NVICBase->ICPR[n])
#define NVIC_IABR(n) (NVICBase->IABR[n])
#define NVIC_IPR(n) (NVICBase->IPR[n])
/**
* @brief Structure representing the System Control Block I/O space.
*/
typedef struct {
IOREG32 CPUID;
IOREG32 ICSR;
IOREG32 VTOR;
IOREG32 AIRCR;
IOREG32 SCR;
IOREG32 CCR;
IOREG32 SHPR[3];
IOREG32 SHCSR;
IOREG32 CFSR;
IOREG32 HFSR;
IOREG32 DFSR;
IOREG32 MMFAR;
IOREG32 BFAR;
IOREG32 AFSR;
} CM3_SCB;
/**
* @brief SCB peripheral base address.
*/
#define SCBBase ((CM3_SCB *)0xE000ED00)
#define SCB_CPUID (SCBBase->CPUID)
#define SCB_ICSR (SCBBase->ICSR)
#define SCB_VTOR (SCBBase->VTOR)
#define SCB_AIRCR (SCBBase->AIRCR)
#define SCB_SCR (SCBBase->SCR)
#define SCB_CCR (SCBBase->CCR)
#define SCB_SHPR(n) (SCBBase->SHPR[n])
#define SCB_SHCSR (SCBBase->SHCSR)
#define SCB_CFSR (SCBBase->CFSR)
#define SCB_HFSR (SCBBase->HFSR)
#define SCB_DFSR (SCBBase->DFSR)
#define SCB_MMFAR (SCBBase->MMFAR)
#define SCB_BFAR (SCBBase->BFAR)
#define SCB_AFSR (SCBBase->AFSR)
#define ICSR_VECTACTIVE_MASK (0x1FF << 0)
#define ICSR_RETTOBASE (0x1 << 11)
#define ICSR_VECTPENDING_MASK (0x1FF << 12)
#define ICSR_ISRPENDING (0x1 << 22)
#define ICSR_ISRPREEMPT (0x1 << 23)
#define ICSR_PENDSTCLR (0x1 << 25)
#define ICSR_PENDSTSET (0x1 << 26)
#define ICSR_PENDSVCLR (0x1 << 27)
#define ICSR_PENDSVSET (0x1 << 28)
#define ICSR_NMIPENDSET (0x1 << 31)
#define AIRCR_VECTKEY 0x05FA0000
#define AIRCR_PRIGROUP_MASK (0x7 << 8)
#define AIRCR_PRIGROUP(n) ((n) << 8)
#ifdef __cplusplus
extern "C" {
#endif
void NVICEnableVector(uint32_t n, uint32_t prio);
void NVICDisableVector(uint32_t n);
void NVICSetSystemHandlerPriority(uint32_t handler, uint32_t prio);
#ifdef __cplusplus
}
#endif
#endif /* _NVIC_H_ */
/** @} */
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