text: /*
   * @file oledc_setRotation.c
   *
   * @author Matthew Matz
   *
   * @version 0.9
   *
   * @copyright Copyright (C) Parallax, Inc. 2016.  See end of file for
   * terms of use (MIT License).
   *
   * @brief 0.96-inch RGB OLED display bitmap driver, see oledc_h. for documentation.
   *
   * @detail Please submit bug reports, suggestions, and improvements to
   * this code to editor@parallax.com.
   */
  
  
  #include "oledc.h"
  
  char TFTROTATION = 2;
  int _width;
  int _height;
  
  void oledc_setRotation(char x) 
  {
    while(oledc_screenLock());  
    oledc_screenLockSet();
  
    TFTROTATION = (x & 3);
    switch (TFTROTATION) {
      case 0:
      case 2:
        _width  = TFTWIDTH;
        _height = TFTHEIGHT;
        break;
      case 1:
      case 3:
        _width  = TFTHEIGHT;
        _height = TFTWIDTH;
        break;
    }
    oledc_screenLockClr();
  }
  
  // Parts of this file are from the Adafruit GFX arduino library
  
  /***************************************************
    This is a library for the 0.96" 16-bit Color OLED with SSD1331 driver chip
    Pick one up today in the adafruit shop!
    ------> http://www.adafruit.com/products/684
    These displays use SPI to communicate, 4 or 5 pins are required to
    interface
    Adafruit invests time and resources providing this open source code,
    please support Adafruit and open-source hardware by purchasing
    products from Adafruit!
    Written by Limor Fried/Ladyada for Adafruit Industries.
    BSD license, all text above must be included in any redistribution
   ****************************************************/
  
  /**
   * 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.
   */
  