flight/pios/inc/pios_bmp280.h

   1 /**
   2  ******************************************************************************
   3  * @addtogroup PIOS PIOS Core hardware abstraction layer
   4  * @{
   5  * @addtogroup PIOS_BMP280 BMP280 Functions
   6  * @brief Hardware functions to deal with the altitude pressure sensor
   7  * @{
   8  *
   9  * @file       pios_bmp280.h
  10  * @author     The LibrePilot Team, http://www.librepilot.org Copyright (C) 2017.
  11  * @brief      BMP280 functions header.
  12  * @see        The GNU Public License (GPL) Version 3
  13  *
  14  *****************************************************************************/
  15 /*
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 3 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful, but
  22  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  23  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  24  * for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License along
  27  * with this program; if not, write to the Free Software Foundation, Inc.,
  28  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  29  */
  30
  31 #ifndef PIOS_BMP280_H
  32 #define PIOS_BMP280_H
  33 #include <pios_sensors.h>
  34
  35 #define BMP280_OVERSAMP_SKIPPED      (0x00)
  36 #define BMP280_OVERSAMP_1X           (0x01)
  37 #define BMP280_OVERSAMP_2X           (0x02)
  38 #define BMP280_OVERSAMP_4X           (0x03)
  39 #define BMP280_OVERSAMP_8X           (0x04)
  40 #define BMP280_OVERSAMP_16X          (0x05)
  41
  42 #define BMP280_PRESSURE_OSR(x)    (x << 2)
  43 #define BMP280_TEMPERATURE_OSR(x) (x << 5)
  44
  45 #define BMP280_STANDARD_RESOLUTION   (BMP280_PRESSURE_OSR(BMP280_OVERSAMP_4X) | BMP280_TEMPERATURE_OSR(BMP280_OVERSAMP_1X))
  46 #define BMP280_HIGH_RESOLUTION       (BMP280_PRESSURE_OSR(BMP280_OVERSAMP_8X) | BMP280_TEMPERATURE_OSR(BMP280_OVERSAMP_1X))
  47 #define BMP280_ULTRA_HIGH_RESOLUTION (BMP280_PRESSURE_OSR(BMP280_OVERSAMP_16X) | BMP280_TEMPERATURE_OSR(BMP280_OVERSAMP_2X))
  48
  49 struct pios_bmp280_cfg {
  50     uint8_t oversampling;
  51 };
  52
  53 /* Public Functions */
  54 extern void PIOS_BMP280_Init(const struct pios_bmp280_cfg *cfg, uint32_t i2c_device);
  55
  56 #endif /* PIOS_BMP280_H */
  57
  58 /**
  59  * @}
  60  * @}
  61  */