flight/pios/inc/pios_bmp085.h

   1 /**
   2  ******************************************************************************
   3  * @addtogroup PIOS PIOS Core hardware abstraction layer
   4  * @{
   5  * @addtogroup PIOS_BMP085 BMP085 Functions
   6  * @brief Hardware functions to deal with the altitude pressure sensor
   7  * @{
   8  *
   9  * @file       pios_bmp085.h
  10  * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
  11  * @brief      BMP085 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_BMP085_H
  32 #define PIOS_BMP085_H
  33
  34 /* BMP085 Addresses */
  35 #define BMP085_I2C_ADDR     0x77
  36 #define BMP085_CALIB_ADDR   0xAA
  37 #define BMP085_CALIB_LEN    22
  38 #define BMP085_CTRL_ADDR    0xF4
  39 #define BMP085_OVERSAMPLING PIOS_BMP085_OVERSAMPLING
  40 #define BMP085_PRES_ADDR    (0x34 + (BMP085_OVERSAMPLING << 6))
  41 #define BMP085_TEMP_ADDR    0x2E
  42 #define BMP085_ADC_MSB      0xF6
  43 #define BMP085_P0           101325
  44
  45 /* Local Types */
  46 typedef struct {
  47     int16_t  AC1;
  48     int16_t  AC2;
  49     int16_t  AC3;
  50     uint16_t AC4;
  51     uint16_t AC5;
  52     uint16_t AC6;
  53     int16_t  B1;
  54     int16_t  B2;
  55     int16_t  MB;
  56     int16_t  MC;
  57     int16_t  MD;
  58 } BMP085CalibDataTypeDef;
  59
  60 typedef enum {
  61     PressureConv,
  62     TemperatureConv
  63 } ConversionTypeTypeDef;
  64
  65 /* Global Variables */
  66 #if defined(PIOS_INCLUDE_FREERTOS)
  67 extern xSemaphoreHandle PIOS_BMP085_EOC;
  68 #else
  69 extern int32_t PIOS_BMP085_EOC;
  70 #endif
  71
  72 /* Public Functions */
  73 extern void PIOS_BMP085_Init(void);
  74 extern void PIOS_BMP085_StartADC(ConversionTypeTypeDef Type);
  75 extern void PIOS_BMP085_ReadADC(void);
  76 extern int16_t PIOS_BMP085_GetTemperature(void);
  77 extern int32_t PIOS_BMP085_GetPressure(void);
  78 extern bool PIOS_BMP085_Read(uint8_t address, uint8_t *buffer, uint8_t len);
  79 extern bool PIOS_BMP085_Write(uint8_t address, uint8_t buffer);
  80 extern int32_t PIOS_BMP085_Test();
  81
  82 #endif /* PIOS_BMP085_H */
  83
  84 /**
  85  * @}
  86  * @}
  87  */