text: /*
   * @file low.c
   *
   * @author Andy Lindsay
   *
   * @version 0.85
   *
   * @copyright Copyright (C) Parallax, Inc. 2012.  See end of file for
   * terms of use (MIT License).
   *
   * @brief low function source, see simpletools.h for documentation.
   *
   * @detail Please submit bug reports, suggestions, and improvements to
   * this code to editor@parallax.com.
   */
  
  #include "simpletools.h"                      // simpletools function prototypes
  
  void low(int pin)                             // low function definition
  {
    int mask = 1 << pin;                        // Set up mask
    OUTA &= ~mask;                              // Pin output state to low
    DIRA |= mask;                               // Pin direction to output
  }
  
  /**
   * TERMS OF USE: MIT License
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   * DEALINGS IN THE SOFTWARE.
   */
  