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68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
/**
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******************************************************************************
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* @addtogroup PIOS PIOS Core hardware abstraction layer
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* @{
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* @addtogroup PIOS_MPXV MPXV* Functions
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* @brief Hardware functions to deal with the DIYDrones airspeed kit, using MPXV5004, 7002 or similar
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* @{
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*
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* @file pios_mpxv.h
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2012.
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* @brief ETASV3 Airspeed Sensor Driver
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* @see The GNU Public License (GPL) Version 3
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*
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******************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef PIOS_MPXV_H
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#define PIOS_MPXV_H
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typedef enum { PIOS_MPXV_UNKNOWN, PIOS_MPXV_5004, PIOS_MPXV_7002 } PIOS_MPXV_sensortype;
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typedef struct {
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PIOS_MPXV_sensortype type;
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uint8_t airspeedADCPin;
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uint16_t calibrationCount;
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uint32_t calibrationSum;
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uint16_t zeroPoint;
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float scale;
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float maxSpeed;
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} PIOS_MPXV_descriptor;
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#define PIOS_MPXV_5004_DESC(pin) \
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(PIOS_MPXV_descriptor) { \
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.type = PIOS_MPXV_5004, \
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.airspeedADCPin = pin, \
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.maxSpeed = 80.0f, \
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.calibrationCount = 0, \
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.calibrationSum = 0, \
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}
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#define PIOS_MPXV_7002_DESC(pin) \
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(PIOS_MPXV_descriptor) { \
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.type = PIOS_MPXV_7002, \
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.airspeedADCPin = pin, \
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.maxSpeed = 56.0f, \
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.calibrationCount = 0, \
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.calibrationSum = 0, \
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}
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uint16_t PIOS_MPXV_Measure(PIOS_MPXV_descriptor *desc);
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uint16_t PIOS_MPXV_Calibrate(PIOS_MPXV_descriptor *desc, uint16_t measurement);
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float PIOS_MPXV_CalcAirspeed(PIOS_MPXV_descriptor *desc, uint16_t measurement);
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#endif /* PIOS_MPXV_H */
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