52 lines
1.8 KiB
C
52 lines
1.8 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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*
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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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#ifndef __DEV_GPIO_H
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#define __DEV_GPIO_H
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#define GPIO_INPUT 0x0000
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#define GPIO_OUTPUT 0x0001
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#define GPIO_LEVEL 0x0000
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#define GPIO_EDGE 0x0010
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#define GPIO_RISING 0x0020
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#define GPIO_FALLING 0x0040
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#define GPIO_HIGH 0x0020
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#define GPIO_LOW 0x0040
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#define GPIO_PULLUP 0x0100
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#define GPIO_PULLDOWN 0x0200
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int gpio_config(unsigned nr, unsigned flags);
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void gpio_set(unsigned nr, unsigned on);
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int gpio_get(unsigned nr);
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#endif
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