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