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RIOT/sys/analog_util/dac_util.c 711 Bytes
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  /*
   * Copyright (C) 2015 Freie Universitรคt Berlin
   *
   * 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     sys_analog_util
   * @{
   *
   * @file
   * @brief       DAC utility function implementation
   *
   * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
   *
   * @}
   */
  
  #include <limits.h>
  
  #include "analog_util.h"
  
  uint16_t dac_util_map(int value, int min, int max)
  {
      return (uint16_t)((value - min) * UINT16_MAX) / (max - min);
  }
  
  uint16_t dac_util_mapf(float value, float min, float max)
  {
      return (uint16_t)(((value - min) * UINT16_MAX) / (max - min));
  }