You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

60 lines
2.3 KiB

/***************************************************************************
* Copyright (C) 11/2014 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; version 2 of the License, *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <avr/io.h>
#include "event.h"
/* *********************************************************************** */
#define EVENT_COUNT 16
static struct event_entry events[EVENT_COUNT];
static volatile uint8_t event_in_idx;
static volatile uint8_t event_out_idx;
/* *********************************************************************** */
void event_queue(uint8_t type, uint8_t num, uint16_t value)
{
uint8_t idx = event_in_idx;
struct event_entry *event = &events[idx++];
if (event->type == EVENT_TYPE_EMPTY)
{
event->type = type;
event->num = num;
event->value = value;
event_in_idx = idx % EVENT_COUNT;
}
} /* event_queue */
struct event_entry * event_get(void)
{
return &events[event_out_idx];
} /* event_get */
void event_clear(void)
{
uint8_t idx = event_out_idx;
events[idx++].type = EVENT_TYPE_EMPTY;
event_out_idx = idx % EVENT_COUNT;
} /* event_clear */