121 lines
4.7 KiB
C
121 lines
4.7 KiB
C
//*****************************************************************************
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//
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// interrupt.h
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//
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// Prototypes for the NVIC Interrupt Controller Driver.
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//
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// Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
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//
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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//*****************************************************************************
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#ifndef __INTERRUPT_H__
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#define __INTERRUPT_H__
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//*****************************************************************************
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//
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// If building with a C++ compiler, make all of the definitions in this header
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// have a C binding.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//*****************************************************************************
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//
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// A union that describes the entries of the vector table. The union is needed
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// since the first entry is the stack pointer and the remainder are function
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// pointers.
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//
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//*****************************************************************************
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typedef union
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{
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void (*pfnHandler)(void);
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unsigned long ulPtr;
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}
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uVectorEntry;
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//*****************************************************************************
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//
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// Macro to generate an interrupt priority mask based on the number of bits
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// of priority supported by the hardware.
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//
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//*****************************************************************************
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#define INT_PRIORITY_MASK ((0xFF << (8 - NUM_PRIORITY_BITS)) & 0xFF)
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//*****************************************************************************
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// Interrupt priority levels
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//*****************************************************************************
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#define INT_PRIORITY_LVL_0 0x00
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#define INT_PRIORITY_LVL_1 0x20
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#define INT_PRIORITY_LVL_2 0x40
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#define INT_PRIORITY_LVL_3 0x60
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#define INT_PRIORITY_LVL_4 0x80
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#define INT_PRIORITY_LVL_5 0xA0
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#define INT_PRIORITY_LVL_6 0xC0
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#define INT_PRIORITY_LVL_7 0xE0
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//*****************************************************************************
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//
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// Prototypes for the APIs.
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//
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//*****************************************************************************
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extern tBoolean IntMasterEnable(void);
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extern tBoolean IntMasterDisable(void);
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extern void IntVTableBaseSet(unsigned long ulVtableBase);
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extern void IntRegister(unsigned long ulInterrupt, void (*pfnHandler)(void));
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extern void IntUnregister(unsigned long ulInterrupt);
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extern void IntPriorityGroupingSet(unsigned long ulBits);
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extern unsigned long IntPriorityGroupingGet(void);
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extern void IntPrioritySet(unsigned long ulInterrupt,
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unsigned char ucPriority);
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extern long IntPriorityGet(unsigned long ulInterrupt);
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extern void IntEnable(unsigned long ulInterrupt);
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extern void IntDisable(unsigned long ulInterrupt);
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extern void IntPendSet(unsigned long ulInterrupt);
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extern void IntPendClear(unsigned long ulInterrupt);
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extern void IntPriorityMaskSet(unsigned long ulPriorityMask);
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extern unsigned long IntPriorityMaskGet(void);
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//*****************************************************************************
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//
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// Mark the end of the C bindings section for C++ compilers.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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}
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#endif
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#endif // __INTERRUPT_H__
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