67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
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/***************************************************************************
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* Copyright (C) 01/2019 by Olaf Rempel *
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* razzor@kopf-tisch.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; version 2 of the License, *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <avr/interrupt.h>
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#include <avr/io.h>
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#include "event.h"
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/* *********************************************************************** */
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static event_entry_t events[EVENT_COUNT];
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static volatile uint8_t event_in_idx;
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static volatile uint8_t event_out_idx;
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/* *********************************************************************** */
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void event_queue(uint8_t type, uint8_t num, uint16_t value)
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{
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event_entry_t * p_event;
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uint8_t sreg_save;
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uint8_t idx;
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sreg_save = SREG;
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cli();
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idx = event_in_idx;
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p_event = &events[idx++];
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if (p_event->type == EVENT_TYPE_EMPTY)
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{
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p_event->type = type;
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p_event->num = num;
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p_event->value = value;
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event_in_idx = idx % EVENT_COUNT;
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}
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SREG = sreg_save;
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} /* event_queue */
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event_entry_t * event_get(void)
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{
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return &events[event_out_idx];
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} /* event_get */
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void event_clear(void)
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{
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uint8_t idx = event_out_idx;
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events[idx++].type = EVENT_TYPE_EMPTY;
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event_out_idx = idx % EVENT_COUNT;
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} /* event_clear */
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