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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [CORTEX_AT91SAM3U256_IAR/] [AT91Lib/] [peripherals/] [aic/] [aic.c] - Rev 603
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/* ---------------------------------------------------------------------------- * ATMEL Microcontroller Software Support * ---------------------------------------------------------------------------- * Copyright (c) 2008, Atmel Corporation * * All rights reserved. * * 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 disclaimer below. * * Atmel's name may not be used to endorse or promote products derived from * this software without specific prior written permission. * * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE * DISCLAIMED. IN NO EVENT SHALL ATMEL 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. * ---------------------------------------------------------------------------- */ //------------------------------------------------------------------------------ // Headers //------------------------------------------------------------------------------ #include "aic.h" #include <board.h> //------------------------------------------------------------------------------ // Global functions //------------------------------------------------------------------------------ //------------------------------------------------------------------------------ /// Configures an interrupt in the AIC. The interrupt is identified by its /// source (AT91C_ID_xxx) and is configured to use the specified mode and /// interrupt handler function. Mode is the value that will be put in AIC_SMRx /// and the function address will be set in AIC_SVRx. /// The interrupt is disabled before configuration, so it is useless /// to do it before calling this function. When AIC_ConfigureIT returns, the /// interrupt will always be disabled and cleared; it must be enabled by a /// call to AIC_EnableIT(). /// \param source Interrupt source to configure. /// \param mode Triggering mode and priority of the interrupt. /// \param handler Interrupt handler function. //------------------------------------------------------------------------------ void AIC_ConfigureIT( unsigned int source, unsigned int mode, void (*handler)(void)) { // Disable the interrupt first AT91C_BASE_AIC->AIC_IDCR = 1 << source; // Configure mode and handler AT91C_BASE_AIC->AIC_SMR[source] = mode; AT91C_BASE_AIC->AIC_SVR[source] = (unsigned int) handler; // Clear interrupt AT91C_BASE_AIC->AIC_ICCR = 1 << source; } //------------------------------------------------------------------------------ /// Enables interrupts coming from the given (unique) source (AT91C_ID_xxx). /// \param source Interrupt source to enable. //------------------------------------------------------------------------------ void AIC_EnableIT(unsigned int source) { AT91C_BASE_AIC->AIC_IECR = 1 << source; } //------------------------------------------------------------------------------ /// Disables interrupts coming from the given (unique) source (AT91C_ID_xxx). /// \param source Interrupt source to enable. //------------------------------------------------------------------------------ void AIC_DisableIT(unsigned int source) { AT91C_BASE_AIC->AIC_IDCR = 1 << source; }
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