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RIOT/drivers/bmp180/bmp180_saul.c 1.5 KB
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  /*
   * Copyright (C) 2016 Inria
   *
   * This file is subject to the terms and conditions of the GNU Lesser
   * General Public License v2.1. See the file LICENSE in the top level
   * directory for more details.
   */
  
  /**
   * @ingroup     drivers_bmp180
   * @{
   *
   * @file
   * @brief       SAUL adaption for BMP180 device
   *
   * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
   * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
   *
   * @}
   */
  
  #include <string.h>
  
  #include "saul.h"
  #include "bmp180.h"
  #include "xtimer.h"
  
  static int32_t temperature, pressure;
  
  static int check_and_read_temperature(void *dev, phydat_t *res)
  {
      bmp180_t *d = (bmp180_t *)dev;
  
      bmp180_read_temperature(d, &temperature);
      res->val[0] = temperature;
      res->unit = UNIT_TEMP_C;
      res->scale = -1;
      return 1;
  }
  
  static int check_and_read_pressure(void *dev, phydat_t *res)
  {
      bmp180_t *d = (bmp180_t *)dev;
  
      bmp180_read_pressure(d, &pressure);
  
      res->val[0] = pressure/10;
      res->unit = UNIT_PA;
      res->scale = 1;
      return 1;
  }
  
  static int read_temperature(void *dev, phydat_t *res)
  {
      return check_and_read_temperature(dev, res);
  }
  
  static int read_pressure(void *dev, phydat_t *res)
  {
      return check_and_read_pressure(dev, res);
  }
  
  const saul_driver_t bmp180_temperature_saul_driver = {
      .read = read_temperature,
      .write = saul_notsup,
      .type = SAUL_SENSE_TEMP
  };
  
  const saul_driver_t bmp180_pressure_saul_driver = {
      .read = read_pressure,
      .write = saul_notsup,
      .type = SAUL_SENSE_PRESS
  };