blob: b4637fd801bb95c49deb351c6e285df803049485 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
/*
* spreadspace avr utils
*
*
* Copyright (C) 2013-2014 Christian Pointner <equinox@spreadspace.org>
*
* This file is part of spreadspace avr utils.
*
* spreadspace avr utils 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, either version 3 of the License, or
* any later version.
*
* spreadspace avr utils 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 spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
*/
#include <LUFA/Drivers/Misc/RingBuffer.h>
#include "eventqueue.h"
static RingBuffer_t event_queue;
static uint8_t event_queue_data[16];
void eventqueue_init(void)
{
RingBuffer_InitBuffer(&event_queue, event_queue_data, sizeof(event_queue_data));
}
uint8_t eventqueue_pop(uint8_t* key, uint8_t* state)
{
if (RingBuffer_IsEmpty(&event_queue))
return 0;
uint8_t event = RingBuffer_Remove(&event_queue);
*state = (event & 0x80) ? 1 : 0;
*key = event & 0x7F;
return 1;
}
void eventqueue_push(uint8_t key, uint8_t state)
{
uint8_t event = (state) ? 0x80 : 0;
event |= (key & 0x7F);
RingBuffer_Insert(&event_queue, event);
}
|
