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RIOT/cpu/x86/include/x86_videoram.h 1.85 KB
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  /*
   * Copyright (C) 2014  René Kijewski  <rene.kijewski@fu-berlin.de>
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
   */
  
  /**
   * Writing to the videoram.
   *
   * @ingroup x86
   * @{
   * @file
   * @author  René Kijewski <rene.kijewski@fu-berlin.de>
   */
  
  #ifndef X86_VIDEORAM_H
  #define X86_VIDEORAM_H
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /**
   * @brief   Print out a single character on the graphical device.
   *
   * This method can be used before the UART system was initialized.
   *
   * Special characters that are understood: '\\n' and '\\r'.
   * Use DOS newlines.
   */
  void videoram_putc(char c);
  
  /**
   * @brief   Print out multiple characters on the graphical device.
   *
   * This is the same as calling videoram_putc() repeatedly.
   */
  void videoram_put(const char *s);
  
  /**
   * @brief   Print out multiple characters on the graphical device, then go to the next line.
   *
   * This is the same as calling `videoram_put(s); videoram_put("\r\n");`.
   */
  void videoram_puts(const char *s);
  
  /**
   * @brief   Print out a hexadecimal number on the graphical device, including "0x" at the start.
   */
  void videoram_put_hex(unsigned long v);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* X86_VIDEORAM_H */
  
  /** @} */