1 /* ----------------------------------------------------------------------------
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2 * ATMEL Microcontroller Software Support
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3 * ----------------------------------------------------------------------------
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4 * Copyright (c) 2008, Atmel Corporation
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6 * All rights reserved.
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
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11 * - Redistributions of source code must retain the above copyright notice,
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12 * this list of conditions and the disclaimer below.
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14 * Atmel's name may not be used to endorse or promote products derived from
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15 * this software without specific prior written permission.
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17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 * ----------------------------------------------------------------------------
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30 //------------------------------------------------------------------------------
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35 /// Methods and definitions for configuring interrupts.
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39 /// -# Configure an interrupt source using IRQ_ConfigureIT
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40 /// -# Enable or disable interrupt generation of a particular source with
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41 /// IRQ_EnableIT and IRQ_DisableIT.
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43 /// \note Most of the time, peripheral interrupts must be also configured
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44 /// inside the peripheral itself.
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45 //------------------------------------------------------------------------------
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50 //------------------------------------------------------------------------------
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52 //------------------------------------------------------------------------------
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55 #if defined(cortexm3)
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56 #include <cmsis/core_cm3.h>
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59 //------------------------------------------------------------------------------
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61 //------------------------------------------------------------------------------
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62 #if defined(cortexm3)
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63 #ifdef __NVIC_PRIO_BITS
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64 #undef __NVIC_PRIO_BITS
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65 #define __NVIC_PRIO_BITS ((SCB->AIRCR & 0x700) >> 8)
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69 //------------------------------------------------------------------------------
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71 //------------------------------------------------------------------------------
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73 extern void IRQ_ConfigureIT(unsigned int source,
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74 unsigned int mode, // mode for AIC, priority for NVIC
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75 void( *handler )( void )); // ISR
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77 extern void IRQ_EnableIT(unsigned int source);
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79 extern void IRQ_DisableIT(unsigned int source);
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81 #endif //#ifndef IRQ_H
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