68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
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/*
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* Copyright (c) 2008, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google, Inc. nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <bits.h>
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#include <debug.h>
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#include <string.h>
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#include <dev/keys.h>
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static unsigned long key_bitmap[BITMAP_NUM_WORDS(MAX_KEYS)];
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void keys_init(void)
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{
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memset(key_bitmap, 0, sizeof(key_bitmap));
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}
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void keys_post_event(uint16_t code, int16_t value)
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{
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if (code >= MAX_KEYS) {
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dprintf(INFO, "Invalid keycode posted: %d\n", code);
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return;
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}
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/* TODO: Implement an actual event queue if it becomes necessary */
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if (value)
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bitmap_set(key_bitmap, code);
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else
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bitmap_clear(key_bitmap, code);
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// dprintf(INFO, "key state change: %d %d\n", code, value);
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}
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int keys_get_state(uint16_t code)
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{
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if (code >= MAX_KEYS) {
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dprintf(INFO, "Invalid keycode requested: %d\n", code);
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return -1;
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}
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return bitmap_test(key_bitmap, code);
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}
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