zcy
/
tinySA
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@719 35acf78f-673a-0410-8e92-d51de3d6d3f4

master
gdisirio 2009-02-05 09:20:22 +00:00
parent 7a74a8aca5
commit aeeba9cf94
3 changed files with 65 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
ports/ARMCM3/nvic.c
View File

@ -17,11 +17,19 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file ports/ARMCM3/nvic.c
* @brief Cortex-M3 NVIC support code.
* @addtogroup ARMCM3_NVIC
* @{
*/
#include <ch.h>
#include <nvic.h>
/**
* Sets the priority of an interrupt handler and enables it.
* @brief Sets the priority of an interrupt handler and enables it.
*
* @param n the interrupt number
* @param prio the interrupt priority
* @note The parameters are not tested for correctness.
@ -34,7 +42,8 @@ void NVICEnableVector(uint32_t n, uint32_t prio) {
}
/**
* Changes the priority of a system handler.
* @brief Changes the priority of a system handler.
*
* @param handler the system handler number
* @param prio the system handler priority
* @note The parameters are not tested for correctness.
@ -44,3 +53,5 @@ void NVICSetSystemHandlerPriority(uint32_t handler, uint32_t prio) {
SCB_SHPR(handler >> 2) = (SCB_SHPR(handler >> 2) & ~(0xFF << sh)) | (prio << sh);
}
/** @} */

52
ports/ARMCM3/nvic.h
View File

@ -17,31 +17,48 @@
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file ports/ARMCM3/nvic.h
* @brief Cortex-M3 NVIC support macros and structures.
* @addtogroup ARMCM3_NVIC
* @{
*/
#ifndef _NVIC_H_
#define _NVIC_H_
/*
* System vector constants for @p NVICSetSystemHandlerPriority().
*/
#define HANDLER_MEM_MANAGE 0
#define HANDLER_BUS_FAULT 1
#define HANDLER_USAGE_FAULT 2
#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
#define HANDLER_DEBUG_MONITOR 8
#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
#define HANDLER_SYSTICK 11
#define HANDLER_PENDSV 10 /**< PENDSV vector id.*/
#define HANDLER_SYSTICK 11 /**< SYS TCK vector id.*/
typedef volatile unsigned char IOREG8;
typedef volatile unsigned int IOREG32;
typedef volatile unsigned char IOREG8; /**< 8 bits I/O register type.*/
typedef volatile unsigned int 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;
@ -49,6 +66,9 @@ typedef struct {
IOREG32 CBVR;
} CM3_ST;
/**
* @brief SYSTICK peripheral base address.
*/
#define STBase ((CM3_ST *)0xE000E010)
#define ST_CSR (STBase->CSR)
#define ST_RVR (STBase->RVR)
@ -74,6 +94,9 @@ typedef struct {
#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];
@ -88,6 +111,9 @@ typedef struct {
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])
@ -96,6 +122,9 @@ typedef struct {
#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;
@ -113,6 +142,9 @@ typedef struct {
IOREG32 AFSR;
} CM3_SCB;
/**
* @brief SCB peripheral base address.
*/
#define SCBBase ((CM3_SCB *)0xE000ED00)
#define SCB_CPUID (SCBBase->CPUID)
#define SCB_ICSR (SCBBase->ICSR)
@ -154,3 +186,5 @@ extern "C" {
#endif
#endif /* _NVIC_H_ */
/** @} */

12
ports/ARMCM3/port.dox
View File

@ -102,8 +102,14 @@
* @brief ARM Cortex-M3 specific port code, structures and macros.
*
* @ingroup ARMCM3
* @file ports/ARMCM3/chtypes.h Port types.
* @file ports/ARMCM3/chcore.h Port related structures and macros.
* @file ports/ARMCM3/chcore.c Port related code.
*/
/** @} */
/**
* @defgroup ARMCM3_NVIC NVIC support
* @{
* @brief ARM Cortex-M3 NVIC support.
*
* @ingroup ARMCM3_CORE
*/
/** @} */