/** * Copyright (c) 2006-2008 iWESUN (ShenZhen) Inf. * All rights reserved.  *  * Redistribution and use in source and binary forms, with or without modification,  * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, *    this list of conditions and the following disclaimer. * 2. 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. * 3. The name of the author may not be used to endorse or promote products *    derived from this software without specific prior written permission.  * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. * * This file is part of the AvrcX MTOS *  * Author: Winter Hu  <winter.hu@gmail.com> * Create: Dec 27, 2006 */#include "display.h"#include "avrcx.h"#if __DISPLAY__ == 1CHARDISPLAY(disp, DISPLAY_COLS, DISPLAY_ROWS);/** * Initialize display module */void init_display(Driver* drv){  disp.driver = drv;  disp.driver->_drv_init_hardware();  //  disp_clean();}/** * Move cursor to new site * * @param unsigned char y, The point y * @param unsigned char x, The point x * @return Point*, The pointer to the cursor struct */void disp_moveto(unsigned char y, unsigned char x){  disp.x = (x < disp.cols) ? x : disp.cols-1;  disp.y = (y < disp.rows) ? y : disp.rows-1;}/** * Write a character to display buffer of current cursor * * @param unsigned char b, The character */INTERFACE void disp_putchar(unsigned char b){  #if defined DISPLAY_CRLF  if (b == '\r') disp.x = 0;  if (b == '\n')     disp.y = (disp.y < disp.rows-1) ? disp.y+1 : 0;  #endif  *(disp.data + disp.x + disp.y*disp.cols) = b;  disp.x++;  if (disp.x >= disp.cols){    disp.x = 0;    disp.y = (disp.y < disp.rows-1) ? disp.y+1 : 0;  }}/** * Retrives the character from display buffer of current cursor * * @return unsigned char, The character */INTERFACE unsigned char disp_getchar(void){  return   *(disp.data + disp.x + disp.y*disp.cols);}/** * Clear display buffer */INTERFACE void disp_clean(void){  for(unsigned int i = 0; i < DISPLAY_BUFSIZE; i++){    *(disp.data+i) = DISPLAY_BLANK;  }}/** * Write a character to specified site * * @param unsigned char row, The row number * @param unsigned char col, The col number * @param unsigned char b, The character */INTERFACE void disp_write(unsigned char row, unsigned char col, 			  unsigned char b){  *(disp.data + col + row*disp.cols) = b;}/** * Retrives the character from display buffer with specified site * This method won't change cursor * * @param unsigned char row * @param unsigned char col * @return unsigned char, The character */INTERFACE unsigned char disp_read(unsigned char row, unsigned char col){  return *(disp.data + col + row*disp.cols);}/** * Refresh display buffer * User should invokes this method in timer to reflash screen */INTERFACE void disp_refresh(void){  _disp_flush(disp)(disp.rows, disp.cols, disp.data);}#endif /* __DISPLAY__ == 1 */