From af1af1e22ddd4bcd55fe9eaaf98f4a640329a4c7 Mon Sep 17 00:00:00 2001 From: Lorenz Meier Date: Tue, 29 Apr 2014 18:38:30 +0200 Subject: Port expander driver first hacky version --- src/drivers/drv_io_expander.h | 65 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 src/drivers/drv_io_expander.h (limited to 'src/drivers/drv_io_expander.h') diff --git a/src/drivers/drv_io_expander.h b/src/drivers/drv_io_expander.h new file mode 100644 index 000000000..2705d6f9e --- /dev/null +++ b/src/drivers/drv_io_expander.h @@ -0,0 +1,65 @@ +/**************************************************************************** + * + * 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 +#include + +/* + * ioctl() definitions + */ + +#define _IOXIOCBASE (0x2800) +#define _IOXIOC(_n) (_IOC(_IOXIOCBASE, _n)) + +/** enable the device */ +#define IOX_ENABLE _IOXIOC(1) + +/** set constant values */ +#define IOX_SET_VALUE _IOXIOC(2) + +/** set constant values */ +#define IOX_SET_MODE _IOXIOC(3) + +/* enum passed to RGBLED_SET_MODE ioctl()*/ +enum IOX_MODE { + IOX_MODE_OFF, + IOX_MODE_ON +}; -- cgit v1.2.3