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[dev] add primitive keys state management (keys device)

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This commit is contained in:
Dima Zavin
2009-01-20 19:25:48 -08:00
committed by Brian Swetland
parent afa6839a16
commit 443afca29b
3 changed files with 161 additions and 0 deletions
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67
dev/keys/keys.c Normal file
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/*
* Copyright (c) 2008, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google, Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS 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 <bits.h>
#include <debug.h>
#include <string.h>
#include <dev/keys.h>
static unsigned long key_bitmap[BITMAP_NUM_WORDS(MAX_KEYS)];
void keys_init(void)
{
memset(key_bitmap, 0, sizeof(key_bitmap));
}
void keys_post_event(uint16_t code, int16_t value)
{
if (code >= MAX_KEYS) {
dprintf(INFO, "Invalid keycode posted: %d\n", code);
return;
}
/* TODO: Implement an actual event queue if it becomes necessary */
if (value)
bitmap_set(key_bitmap, code);
else
bitmap_clear(key_bitmap, code);
// dprintf(INFO, "key state change: %d %d\n", code, value);
}
int keys_get_state(uint16_t code)
{
if (code >= MAX_KEYS) {
dprintf(INFO, "Invalid keycode requested: %d\n", code);
return -1;
}
return bitmap_test(key_bitmap, code);
}

5
dev/keys/rules.mk Normal file
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LOCAL_DIR := $(GET_LOCAL_DIR)
OBJS += \
$(LOCAL_DIR)/keys.o

89
include/dev/keys.h Normal file
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/*
* Copyright (c) 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google, Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*/
#ifndef __DEV_KEYS_H
#define __DEV_KEYS_H
#include <sys/types.h>
/* these are just the ascii values for the chars */
#define KEY_0 0x30
#define KEY_1 0x31
#define KEY_2 0x32
#define KEY_3 0x33
#define KEY_4 0x34
#define KEY_5 0x35
#define KEY_6 0x36
#define KEY_7 0x37
#define KEY_8 0x38
#define KEY_9 0x39
#define KEY_A 0x61
#define KEY_ESC 0x100
#define KEY_F1 0x101
#define KEY_F2 0x102
#define KEY_F3 0x103
#define KEY_F4 0x104
#define KEY_F5 0x105
#define KEY_F6 0x106
#define KEY_F7 0x107
#define KEY_F8 0x108
#define KEY_F9 0x109
#define KEY_LEFT 0x110
#define KEY_RIGHT 0x111
#define KEY_UP 0x112
#define KEY_DOWN 0x113
#define KEY_CENTER 0x114
#define KEY_VOLUMEUP 0x115
#define KEY_VOLUMEDOWN 0x116
#define KEY_MUTE 0x117
#define KEY_SOFT1 0x11a
#define KEY_SOFT2 0x11b
#define KEY_STAR 0x11c
#define KEY_SHARP 0x11d
#define KEY_MAIL 0x11e
#define KEY_SEND 0x120
#define KEY_CLEAR 0x121
#define KEY_HOME 0x122
#define KEY_BACK 0x123
#define MAX_KEYS 0x1ff
void keys_init(void);
void keys_post_event(uint16_t code, int16_t value);
int keys_get_state(uint16_t code);
#endif /* __DEV_KEYS_H */