Core_CortexM3.h

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// (c) IMT - Information Management Technology AG, CH-9470 Buchs, www.imt.ch.
 
#ifndef CORE_CORTEXM3_H
#define CORE_CORTEXM3_H
 
#include <Imt.Base.Core.Platform/Platform.h>
 
#include "SystemMemoryMap.h"
 
// System Control Block (SCB) register structure
// Reference: Cortex-M3 Devices Generic User Guide DUI0552A Table 4-12
typedef struct {
    // Offset: 0x00 CPU ID Base Register
    uint32_t volatile CPUID;
    // Offset: 0x04 Interrupt Control State Register
    uint32_t volatile ICSR;
    // Offset: 0x08 Vector Table Offset Register
    uint32_t volatile VTOR;
    // Offset: 0x0C Application Interrupt / Reset Control Register
    uint32_t volatile AIRCR;
    // Offset: 0x10 System Control Register
    uint32_t volatile SCR;
    // Offset: 0x14 Configuration Control Register
    uint32_t volatile CCR;
    // Offset: 0x18 System Handlers Priority Registers (4-7, 8-11, 12-15)
    uint8_t volatile SHPR[12];
    // Offset: 0x24 System Handler Control and State Register
    uint32_t volatile SHCRS;
    // Offset: 0x28 Configurable Fault Status Register
    uint32_t volatile CFSR;
    // Offset: 0x2C Hard Fault Status Register
    uint32_t volatile HFSR;
    // Offset: 0x30 Debug Fault Status Register
    uint32_t volatile DFSR;
    // Offset: 0x34 Mem Manage Address Register
    uint32_t volatile MMAR;
    // Offset: 0x38 Bus Fault Address Register
    uint32_t volatile BFAR;
    // Offset: 0x3C Auxiliary Fault Status Register
    uint32_t volatile AFSR;
} SCB_Type;
// SCB configuration struct
#define SCB ((SCB_Type*)SCB_BASE)
 
// Bit definition for SCB_ICSR register
// Active ISR number field
#define SCB_ICSR_VECTACTIVE ((uint32_t)0x000001FF)
// All active exceptions minus the IPSR_current_exception yields the empty set
#define SCB_ICSR_RETTOBASE ((uint32_t)0x00000800)
// Pending ISR number field
#define SCB_ICSR_VECTPENDING ((uint32_t)0x003FF000)
// Interrupt pending flag
#define SCB_ICSR_ISRPENDING ((uint32_t)0x00400000)
// Clear pending SysTick bit
#define SCB_ICSR_PENDSTCLR ((uint32_t)0x02000000)
// Set pending SysTick bit
#define SCB_ICSR_PENDSTSET ((uint32_t)0x04000000)
// Clear pending pendSV bit
#define SCB_ICSR_PENDSVCLR ((uint32_t)0x08000000)
// Set pending pendSV bit
#define SCB_ICSR_PENDSVSET ((uint32_t)0x10000000)
// Set pending NMI bit
#define SCB_ICSR_NMIPENDSET ((uint32_t)0x80000000)
 
// Bit definition for SCB_SCR register
// Sleep deep bit
#define SCB_SCR_SLEEPDEEP ((uint8_t)0x04)
 
// SCB Application Interrupt and Reset Control Register Definitions
// SCB AIRCR: VECTKEY Position
#define SCB_AIRCR_VECTKEY_Pos 16
// SCB AIRCR: VECTKEY Mask
#define SCB_AIRCR_VECTKEY_Mask (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos)
// SCB AIRCR: PRIGROUP Position
#define SCB_AIRCR_PRIGROUP_Pos 8
// SCB AIRCR: PRIGROUP Mask
#define SCB_AIRCR_PRIGROUP_Mask (7UL << SCB_AIRCR_PRIGROUP_Pos)
// SCB AIRCR: System reset request
#define SCB_AIRCR_SYSRESETREQ 0x4U
 
#endif // CORE_CORTEXM3_H