forked from Archive/PX4-Autopilot
84 lines
2.8 KiB
C
84 lines
2.8 KiB
C
/****************************************************************************
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*
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* Copyright (C) 2012 PX4 Development Team. 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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*
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* 1. 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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* 2. 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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* 3. Neither the name PX4 nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* 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
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/*
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* Driver for the ST LIS331 MEMS accelerometer
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*/
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#include <sys/ioctl.h>
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#define _LIS331BASE 0x6900
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#define LIS331C(_x) _IOC(_LIS331BASE, _x)
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/*
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* Sets the sensor internal sampling rate, and if a buffer
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* has been configured, the rate at which entries will be
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* added to the buffer.
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*/
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#define LIS331_SETRATE LIS331C(1)
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#define LIS331_RATE_50Hz (0<<3)
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#define LIS331_RATE_100Hz (1<<3)
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#define LIS331_RATE_400Hz (2<<3)
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#define LIS331_RATE_1000Hz (3<<3)
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/*
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* Sets the sensor internal range.
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*/
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#define LIS331_SETRANGE LIS331C(2)
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#define LIS331_RANGE_2G (0<<4)
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#define LIS331_RANGE_4G (1<<4)
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#define LIS331_RANGE_8G (3<<4)
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/*
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* Sets the address of a shared lis331_buffer
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* structure that is maintained by the driver.
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*
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* If zero is passed as the address, disables
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* the buffer updating.
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*/
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#define LIS331_SETBUFFER LIS331C(3)
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struct lis331_buffer {
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uint32_t size; /* number of entries in the samples[] array */
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uint32_t next; /* the next entry that will be populated */
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struct {
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uint16_t x;
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uint16_t y;
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uint16_t z;
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} samples[];
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};
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extern int lis331_attach(struct spi_dev_s *spi, int spi_id);
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