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/* This source file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */
/*This file is prepared for Doxygen automatic documentation generation.*/
/*! \file *********************************************************************
*
* \brief EIC driver for AVR32 UC3.
*
* AVR32 External Interrupt Controller driver module.
*
* - Compiler: IAR EWAVR32 and GNU GCC for AVR32
* - Supported devices: All AVR32 devices with an EIC module can be used.
* - AppNote:
*
* \author Atmel Corporation: http://www.atmel.com \n
* Support and FAQ: http://support.atmel.no/
*
******************************************************************************/
/* Copyright (c) 2009 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:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an Atmel
* AVR product.
*
* 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
* EXPRESSLY AND SPECIFICALLY 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
*
*/
#include <avr32/io.h>
#include "compiler.h"
#include "preprocessor.h"
#include "eic.h"
void eic_init(volatile avr32_eic_t *eic, const eic_options_t *opt, unsigned int nb_lines)
{
int i;
for (i = 0; i < nb_lines; i++)
{
// Set up mode level
eic->mode = (opt[i].eic_mode == 1) ? (eic->mode | (1 << opt[i].eic_line)) : (eic->mode & ~(1 << opt[i].eic_line));
// Set up edge type
eic->edge = (opt[i].eic_edge == 1) ? (eic->edge | (1 << opt[i].eic_line)) : (eic->edge & ~(1 << opt[i].eic_line));
// Set up level
eic->level = (opt[i].eic_level == 1) ? (eic->level | (1 << opt[i].eic_line)) : (eic->level & ~(1 << opt[i].eic_line));
// Set up if filter is used
eic->filter = (opt[i].eic_filter == 1) ? (eic->filter | (1 << opt[i].eic_line)) : (eic->filter & ~(1 << opt[i].eic_line));
// Set up which mode is used : asynchronous mode/ synchronous mode
eic->async = (opt[i].eic_async == 1) ? (eic->async | (1 << opt[i].eic_line)) : (eic->async & ~(1 << opt[i].eic_line));
}
}
void eic_enable_lines(volatile avr32_eic_t *eic, unsigned int mask_lines)
{
eic->en = mask_lines;
}
void eic_enable_line(volatile avr32_eic_t *eic, unsigned int line_number)
{
// Enable line line_number
eic->en = 1 << line_number;
}
void eic_disable_lines(volatile avr32_eic_t *eic, unsigned int mask_lines)
{
eic->dis = mask_lines;
}
void eic_disable_line(volatile avr32_eic_t *eic, unsigned int line_number)
{
// Disable line line_number
eic->dis = 1 << line_number;
}
Bool eic_is_line_enabled(volatile avr32_eic_t *eic, unsigned int line_number)
{
return (eic->ctrl & (1 << line_number)) != 0;
}
void eic_enable_interrupt_lines(volatile avr32_eic_t *eic, unsigned int mask_lines)
{
eic->ier = mask_lines;
}
void eic_enable_interrupt_line(volatile avr32_eic_t *eic, unsigned int line_number)
{
// Enable line line_number
eic->ier = 1 << line_number;
}
void eic_disable_interrupt_lines(volatile avr32_eic_t *eic, unsigned int mask_lines)
{
Bool global_interrupt_enabled = Is_global_interrupt_enabled();
if (global_interrupt_enabled) Disable_global_interrupt();
eic->idr = mask_lines;
eic->imr;
if (global_interrupt_enabled) Enable_global_interrupt();
}
void eic_disable_interrupt_line(volatile avr32_eic_t *eic, unsigned int line_number)
{
Bool global_interrupt_enabled = Is_global_interrupt_enabled();
// Disable line line_number
if (global_interrupt_enabled) Disable_global_interrupt();
eic->idr = 1 << line_number;
eic->imr;
if (global_interrupt_enabled) Enable_global_interrupt();
}
Bool eic_is_interrupt_line_enabled(volatile avr32_eic_t *eic, unsigned int line_number)
{
return (eic->imr & (1 << line_number)) != 0;
}
void eic_clear_interrupt_lines(volatile avr32_eic_t *eic, unsigned int mask_lines)
{
Bool global_interrupt_enabled = Is_global_interrupt_enabled();
if (global_interrupt_enabled) Disable_global_interrupt();
eic->icr = mask_lines;
eic->isr;
if (global_interrupt_enabled) Enable_global_interrupt();
}
void eic_clear_interrupt_line(volatile avr32_eic_t *eic, unsigned int line_number)
{
Bool global_interrupt_enabled = Is_global_interrupt_enabled();
// Clear line line_number
if (global_interrupt_enabled) Disable_global_interrupt();
eic->icr = 1 << line_number;
eic->isr;
if (global_interrupt_enabled) Enable_global_interrupt();
}
Bool eic_is_interrupt_line_pending(volatile avr32_eic_t *eic, unsigned int line_number)
{
return (eic->isr & (1 << line_number)) != 0;
}
#if !defined(AVR32_EIC_301_H_INCLUDED)
void eic_enable_interrupt_scan(volatile avr32_eic_t *eic,unsigned int presc)
{
// Enable SCAN function with PRESC value
eic->scan |= (presc << AVR32_EIC_SCAN_PRESC_OFFSET) | (1 << AVR32_EIC_SCAN_EN_OFFSET);
}
void eic_disable_interrupt_scan(volatile avr32_eic_t *eic)
{
// Disable SCAN function
eic->scan = 0 << AVR32_EIC_SCAN_EN_OFFSET;
}
unsigned long eic_get_interrupt_pad_scan(volatile avr32_eic_t *eic)
{
// Return pad number that causes interrupt
return(eic->scan>>AVR32_EIC_SCAN_PIN_OFFSET);
}
#endif
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