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/* *****************************************************************************
* Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of Maxim Integrated
* Products, Inc. shall not be used except as stated in the Maxim Integrated
* Products, Inc. Branding Policy.
*
* The mere transfer of this software does not imply any licenses
* of trade secrets, proprietary technology, copyrights, patents,
* trademarks, maskwork rights, or any other form of intellectual
* property whatsoever. Maxim Integrated Products, Inc. retains all
* ownership rights.
*
* $Date: 2019-06-05 16:53:29 -0500 (Wed, 05 Jun 2019) $
* $Revision: 43696 $
*
**************************************************************************** */
#include "mxc_config.h"
#include <string.h>
#include "nvic_table.h"
#if !defined (NVIC_USER_IRQ_OFFSET)
#define NVIC_USER_IRQ_OFFSET 16 /**! Offset for device specific IRQs */
#endif
/* RAM vector_table needs to be aligned with the size of the vector table */
#if defined ( __ICCARM__ )
#pragma data_alignment = 512
#else
__attribute__((aligned(512)))
#endif
static void (*ramVectorTable[MXC_IRQ_COUNT])(void);
void NVIC_SetRAM(void)
{
#if defined (__ICCARM__)
extern void (* const __isr_vector[])(void);
#else
/* should be defined in starup_<device>.S */
extern uint32_t __isr_vector[97];
#endif
memcpy(&ramVectorTable, &__isr_vector, sizeof(ramVectorTable));
SCB->VTOR = (uint32_t)&ramVectorTable;
}
void NVIC_SetVector(IRQn_Type irqn, void(*irq_handler)(void))
{
int index = irqn + 16; /* offset for externals */
/* If not copied, do copy */
if (SCB->VTOR != (uint32_t)&ramVectorTable) {
NVIC_SetRAM();
}
ramVectorTable[index] = irq_handler;
NVIC_EnableIRQ(irqn);
}
uint32_t NVIC_GetVector(IRQn_Type irqn)
{
uint32_t *vectors = (uint32_t *)SCB->VTOR;
return vectors[(int32_t)irqn + NVIC_USER_IRQ_OFFSET];
}
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