nvic.h
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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 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/>.
---
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes ChibiOS/RT, without being obliged to provide
the source code for any proprietary components. See the file exception.txt
for full details of how and when the exception can be applied.
*/
/**
* @file common/ARMCMx/nvic.h
* @brief Cortex-Mx NVIC support macros and structures.
*
* @addtogroup COMMON_ARMCMx_NVIC
* @{
*/
#ifndef _NVIC_H_
#define _NVIC_H_
/**
* @name System vector numbers
* @{
*/
#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 *)0xE000E004U))
/**
* @brief Structure representing the SYSTICK I/O space.
*/
typedef struct {
IOREG32 CSR;
IOREG32 RVR;
IOREG32 CVR;
IOREG32 CBVR;
} CMx_ST;
/**
* @brief SYSTICK peripheral base address.
*/
#define STBase ((CMx_ST *)0xE000E010U)
#define ST_CSR (STBase->CSR)
#define ST_RVR (STBase->RVR)
#define ST_CVR (STBase->CVR)
#define ST_CBVR (STBase->CBVR)
#define CSR_ENABLE_MASK (0x1U << 0)
#define ENABLE_OFF_BITS (0U << 0)
#define ENABLE_ON_BITS (1U << 0)
#define CSR_TICKINT_MASK (0x1U << 1)
#define TICKINT_DISABLED_BITS (0U << 1)
#define TICKINT_ENABLED_BITS (1U << 1)
#define CSR_CLKSOURCE_MASK (0x1U << 2)
#define CLKSOURCE_EXT_BITS (0U << 2)
#define CLKSOURCE_CORE_BITS (1U << 2)
#define CSR_COUNTFLAG_MASK (0x1U << 16)
#define RVR_RELOAD_MASK (0xFFFFFFU << 0)
#define CVR_CURRENT_MASK (0xFFFFFFU << 0)
#define CBVR_TENMS_MASK (0xFFFFFFU << 0)
#define CBVR_SKEW_MASK (0x1U << 30)
#define CBVR_NOREF_MASK (0x1U << 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];
IOREG32 unused6[644];
IOREG32 STIR;
} CMx_NVIC;
/**
* @brief NVIC peripheral base address.
*/
#define NVICBase ((CMx_NVIC *)0xE000E100U)
#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])
#define NVIC_STIR (NVICBase->STIR)
/**
* @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;
IOREG32 PFR[2];
IOREG32 DFR;
IOREG32 ADR;
IOREG32 MMFR[4];
IOREG32 SAR[5];
IOREG32 unused1[5];
IOREG32 CPACR;
} CMx_SCB;
/**
* @brief SCB peripheral base address.
*/
#define SCBBase ((CMx_SCB *)0xE000ED00U)
#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 SCB_PFR(n) (SCBBase->PFR[n])
#define SCB_DFR (SCBBase->DFR)
#define SCB_ADR (SCBBase->ADR)
#define SCB_MMFR(n) (SCBBase->MMFR[n])
#define SCB_SAR(n) (SCBBase->SAR[n])
#define SCB_CPACR (SCBBase->CPACR)
#define ICSR_VECTACTIVE_MASK (0x1FFU << 0)
#define ICSR_RETTOBASE (0x1U << 11)
#define ICSR_VECTPENDING_MASK (0x1FFU << 12)
#define ICSR_ISRPENDING (0x1U << 22)
#define ICSR_ISRPREEMPT (0x1U << 23)
#define ICSR_PENDSTCLR (0x1U << 25)
#define ICSR_PENDSTSET (0x1U << 26)
#define ICSR_PENDSVCLR (0x1U << 27)
#define ICSR_PENDSVSET (0x1U << 28)
#define ICSR_NMIPENDSET (0x1U << 31)
#define AIRCR_VECTKEY 0x05FA0000U
#define AIRCR_PRIGROUP_MASK (0x7U << 8)
#define AIRCR_PRIGROUP(n) ((n##U) << 8)
/**
* @brief Structure representing the FPU I/O space.
*/
typedef struct {
IOREG32 unused1[1];
IOREG32 FPCCR;
IOREG32 FPCAR;
IOREG32 FPDSCR;
IOREG32 MVFR0;
IOREG32 MVFR1;
} CMx_FPU;
/**
* @brief FPU peripheral base address.
*/
#define FPUBase ((CMx_FPU *)0xE000EF30U)
#define SCB_FPCCR (FPUBase->FPCCR)
#define SCB_FPCAR (FPUBase->FPCAR)
#define SCB_FPDSCR (FPUBase->FPDSCR)
#define SCB_MVFR0 (FPUBase->MVFR0)
#define SCB_MVFR1 (FPUBase->MVFR1)
#define FPCCR_ASPEN (0x1U << 31)
#define FPCCR_LSPEN (0x1U << 30)
#define FPCCR_MONRDY (0x1U << 8)
#define FPCCR_BFRDY (0x1U << 6)
#define FPCCR_MMRDY (0x1U << 5)
#define FPCCR_HFRDY (0x1U << 4)
#define FPCCR_THREAD (0x1U << 3)
#define FPCCR_USER (0x1U << 1)
#define FPCCR_LSPACT (0x1U << 0)
#define FPDSCR_AHP (0x1U << 26)
#define FPDSCR_DN (0x1U << 25)
#define FPDSCR_FZ (0x1U << 24)
#define FPDSCR_RMODE(n) ((n##U) << 22)
/**
* @brief Structure representing the SCS I/O space.
*/
typedef struct {
IOREG32 DHCSR;
IOREG32 DCRSR;
IOREG32 DCRDR;
IOREG32 DEMCR;
} CMx_SCS;
/**
* @brief SCS peripheral base address.
*/
#define SCSBase ((CMx_SCS *)0xE000EDF0U)
#define SCS_DHCSR (SCSBase->DHCSR)
#define SCS_DCRSR (SCSBase->DCRSR)
#define SCS_DCRDR (SCSBase->DCRDR)
#define SCS_DEMCR (SCSBase->DEMCR)
#define SCS_DEMCR_TRCENA (0x1U << 24)
/**
* @brief Structure representing the DWT I/O space.
*/
typedef struct {
IOREG32 CTRL;
IOREG32 CYCCNT;
IOREG32 CPICNT;
IOREG32 EXCCNT;
IOREG32 SLEEPCNT;
IOREG32 LSUCNT;
IOREG32 FOLDCNT;
IOREG32 PCSR;
} CMx_DWT;
/**
* @brief DWT peripheral base address.
*/
#define DWTBase ((CMx_DWT *)0xE0001000U)
#define DWT_CTRL (DWTBase->CTRL)
#define DWT_CYCCNT (DWTBase->CYCCNT)
#define DWT_CPICNT (DWTBase->CPICNT)
#define DWT_EXCCNT (DWTBase->EXCCNT)
#define DWT_SLEEPCNT (DWTBase->SLEEPCNT)
#define DWT_LSUCNT (DWTBase->LSUCNT)
#define DWT_FOLDCNT (DWTBase->FOLDCNT)
#define DWT_PCSR (DWTBase->PCSR)
#define DWT_CTRL_CYCCNTENA (0x1U << 0)
#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_ */
/** @} */