text: /*
   * Copyright (c) 2020, Richard Henrichsen
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * * Redistributions of source code must retain the above copyright notice, this
   *   list of conditions and the following disclaimer.
   *
   * * Redistributions in binary form must reproduce the above copyright notice,
   *   this list of conditions and the following disclaimer in the documentation
   *   and/or other materials provided with the distribution.
   *
   * * Neither the name of the copyright holder nor the names of its
   *   contributors may be used to endorse or promote products derived from
   *   this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "analog_pin.h"
  
  void AnalogPin::init(AnalogDigitalConverter *adc, GPIO_TypeDef *basePort, uint16_t pin, uint8_t adc_channel)
  {
    this->adc_ = adc;
    this->gpio_.init(basePort, pin, GPIO::ANALOG);
    this->index_ = this->adc_->add_channel(adc_channel);
  }
  
  double AnalogPin::read() const
  {
    return read_raw() * AnalogDigitalConverter::REFERENCE_VOLTAGE / AnalogDigitalConverter::RAW_READING_MAX;
  }
  
  uint16_t AnalogPin::read_raw() const
  {
    return adc_->read(index_);
  }
  