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author | Thomas Gubler <thomasgubler@gmail.com> | 2014-05-30 19:36:19 +0200 |
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committer | Thomas Gubler <thomasgubler@gmail.com> | 2014-05-30 19:36:19 +0200 |
commit | c94e3583807f13411c84067b20ce0e7d6933c294 (patch) | |
tree | 8390629d32be31c1e5863531d5456fb0d7ede00d /src/drivers/drv_io_expander.h | |
parent | 33356ed50386ceb086595e5bd13e42d8fd924add (diff) | |
parent | 90d8f7726d682e11039a313ebac6b047b59ccfb8 (diff) | |
download | px4-firmware-c94e3583807f13411c84067b20ce0e7d6933c294.tar.gz px4-firmware-c94e3583807f13411c84067b20ce0e7d6933c294.tar.bz2 px4-firmware-c94e3583807f13411c84067b20ce0e7d6933c294.zip |
Merge remote-tracking branch 'upstream/master' into mtecs
Diffstat (limited to 'src/drivers/drv_io_expander.h')
-rw-r--r-- | src/drivers/drv_io_expander.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/drivers/drv_io_expander.h b/src/drivers/drv_io_expander.h new file mode 100644 index 000000000..106354377 --- /dev/null +++ b/src/drivers/drv_io_expander.h @@ -0,0 +1,71 @@ +/**************************************************************************** + * + * Copyright (c) 2014 PX4 Development Team. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. Neither the name PX4 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. + * + ****************************************************************************/ + +/** + * @file drv_io_expander.h + * + * IO expander device API + */ + +#pragma once + +#include <stdint.h> +#include <sys/ioctl.h> + +/* + * ioctl() definitions + */ + +#define _IOXIOCBASE (0x2800) +#define _IOXIOC(_n) (_IOC(_IOXIOCBASE, _n)) + +/** set a bitmask (non-blocking) */ +#define IOX_SET_MASK _IOXIOC(1) + +/** get a bitmask (blocking) */ +#define IOX_GET_MASK _IOXIOC(2) + +/** set device mode (non-blocking) */ +#define IOX_SET_MODE _IOXIOC(3) + +/** set constant values (non-blocking) */ +#define IOX_SET_VALUE _IOXIOC(4) + +/* ... to IOX_SET_VALUE + 8 */ + +/* enum passed to RGBLED_SET_MODE ioctl()*/ +enum IOX_MODE { + IOX_MODE_OFF, + IOX_MODE_ON, + IOX_MODE_TEST_OUT +}; |