183 lines
6.2 KiB
C
Executable file
183 lines
6.2 KiB
C
Executable file
/* This source file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */
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/*This file is prepared for Doxygen automatic documentation generation.*/
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/*! \file *********************************************************************
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*
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* \brief EIC driver for AVR32 UC3.
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*
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* AVR32 External Interrupt Controller driver module.
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*
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* - Compiler: IAR EWAVR32 and GNU GCC for AVR32
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* - Supported devices: All AVR32 devices with an EIC module can be used.
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* - AppNote:
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*
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* \author Atmel Corporation: http://www.atmel.com \n
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* Support and FAQ: http://support.atmel.no/
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*
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******************************************************************************/
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/* Copyright (c) 2009 Atmel Corporation. All rights reserved.
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of Atmel may not 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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* 4. This software may only be redistributed and used in connection with an Atmel
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* AVR product.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY 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 OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
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*
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*/
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#include <avr32/io.h>
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#include "compiler.h"
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#include "preprocessor.h"
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#include "eic.h"
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void eic_init(volatile avr32_eic_t *eic, const eic_options_t *opt, unsigned int nb_lines)
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{
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int i;
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for (i = 0; i < nb_lines; i++)
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{
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// Set up mode level
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eic->mode = (opt[i].eic_mode == 1) ? (eic->mode | (1 << opt[i].eic_line)) : (eic->mode & ~(1 << opt[i].eic_line));
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// Set up edge type
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eic->edge = (opt[i].eic_edge == 1) ? (eic->edge | (1 << opt[i].eic_line)) : (eic->edge & ~(1 << opt[i].eic_line));
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// Set up level
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eic->level = (opt[i].eic_level == 1) ? (eic->level | (1 << opt[i].eic_line)) : (eic->level & ~(1 << opt[i].eic_line));
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// Set up if filter is used
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eic->filter = (opt[i].eic_filter == 1) ? (eic->filter | (1 << opt[i].eic_line)) : (eic->filter & ~(1 << opt[i].eic_line));
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// Set up which mode is used : asynchronous mode/ synchronous mode
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eic->async = (opt[i].eic_async == 1) ? (eic->async | (1 << opt[i].eic_line)) : (eic->async & ~(1 << opt[i].eic_line));
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}
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}
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void eic_enable_lines(volatile avr32_eic_t *eic, unsigned int mask_lines)
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{
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eic->en = mask_lines;
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}
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void eic_enable_line(volatile avr32_eic_t *eic, unsigned int line_number)
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{
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// Enable line line_number
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eic->en = 1 << line_number;
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}
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void eic_disable_lines(volatile avr32_eic_t *eic, unsigned int mask_lines)
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{
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eic->dis = mask_lines;
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}
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void eic_disable_line(volatile avr32_eic_t *eic, unsigned int line_number)
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{
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// Disable line line_number
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eic->dis = 1 << line_number;
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}
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Bool eic_is_line_enabled(volatile avr32_eic_t *eic, unsigned int line_number)
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{
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return (eic->ctrl & (1 << line_number)) != 0;
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}
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void eic_enable_interrupt_lines(volatile avr32_eic_t *eic, unsigned int mask_lines)
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{
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eic->ier = mask_lines;
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}
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void eic_enable_interrupt_line(volatile avr32_eic_t *eic, unsigned int line_number)
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{
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// Enable line line_number
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eic->ier = 1 << line_number;
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}
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void eic_disable_interrupt_lines(volatile avr32_eic_t *eic, unsigned int mask_lines)
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{
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Bool global_interrupt_enabled = Is_global_interrupt_enabled();
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if (global_interrupt_enabled) Disable_global_interrupt();
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eic->idr = mask_lines;
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eic->imr;
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if (global_interrupt_enabled) Enable_global_interrupt();
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}
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void eic_disable_interrupt_line(volatile avr32_eic_t *eic, unsigned int line_number)
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{
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Bool global_interrupt_enabled = Is_global_interrupt_enabled();
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// Disable line line_number
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if (global_interrupt_enabled) Disable_global_interrupt();
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eic->idr = 1 << line_number;
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eic->imr;
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if (global_interrupt_enabled) Enable_global_interrupt();
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}
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Bool eic_is_interrupt_line_enabled(volatile avr32_eic_t *eic, unsigned int line_number)
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{
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return (eic->imr & (1 << line_number)) != 0;
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}
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void eic_clear_interrupt_lines(volatile avr32_eic_t *eic, unsigned int mask_lines)
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{
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Bool global_interrupt_enabled = Is_global_interrupt_enabled();
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if (global_interrupt_enabled) Disable_global_interrupt();
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eic->icr = mask_lines;
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eic->isr;
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if (global_interrupt_enabled) Enable_global_interrupt();
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}
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void eic_clear_interrupt_line(volatile avr32_eic_t *eic, unsigned int line_number)
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{
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Bool global_interrupt_enabled = Is_global_interrupt_enabled();
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// Clear line line_number
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if (global_interrupt_enabled) Disable_global_interrupt();
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eic->icr = 1 << line_number;
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eic->isr;
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if (global_interrupt_enabled) Enable_global_interrupt();
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}
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Bool eic_is_interrupt_line_pending(volatile avr32_eic_t *eic, unsigned int line_number)
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{
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return (eic->isr & (1 << line_number)) != 0;
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}
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#if !defined(AVR32_EIC_301_H_INCLUDED)
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void eic_enable_interrupt_scan(volatile avr32_eic_t *eic,unsigned int presc)
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{
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// Enable SCAN function with PRESC value
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eic->scan |= (presc << AVR32_EIC_SCAN_PRESC_OFFSET) | (1 << AVR32_EIC_SCAN_EN_OFFSET);
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}
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void eic_disable_interrupt_scan(volatile avr32_eic_t *eic)
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{
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// Disable SCAN function
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eic->scan = 0 << AVR32_EIC_SCAN_EN_OFFSET;
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}
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unsigned long eic_get_interrupt_pad_scan(volatile avr32_eic_t *eic)
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{
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// Return pad number that causes interrupt
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return(eic->scan>>AVR32_EIC_SCAN_PIN_OFFSET);
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}
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#endif |