commlcd.c

MiniGUI for uCOS 移植实验全部源码

/*
** $Id: commlcd.c,v 1.1 2004/08/02 02:57:47 snig Exp $
** 
** commlcd.c: GAL driver for common lcd.
** 
** Copyright (C) 2004 Feynman Software.
**
** Create Date: 2003/07/04 by Wei Yongming
*/

/*
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>

#include "native.h"

#ifdef _NATIVE_GAL_COMMLCD
#include "lcddrive.h"
#include "fb.h"

static PSD fb_open(PSD psd)
{
    PSUBDRIVER subdriver;

    LCM_Init();
    fprintf(stderr, "GAL Common LCD engine: Init LCM!\n");

    // 设置液晶属性
    psd->planes = 1;				// 单屏    
    psd->xres = GUI_LCM_XMAX;
    psd->yres = GUI_LCM_YMAX;

	// 设置屏幕颜色深度
    psd->bpp = 8;
	psd->linelen = psd->xres;		// 一行使用的字节数
    psd->ncolors = 1 << (psd->bpp);	// 最大颜色数

	// 分配Framebuffer空间
    psd->addr = malloc(GUI_LCM_XMAX * GUI_LCM_YMAX );	// 每一个点要1字节数据
    if ( ! psd->addr ) 
   	{  fprintf(stderr, "GAL Common LCD engine: Couldn't allocate buffer!\n");
       return(NULL);			// 内存不足，初始化失败(返回NULL)
    }
    
    psd->gr_mode = MODE_SET;	// 画图模式为设置模式(非AND、XOR模式)

    psd->size = 0;             	// 分配的内存(由fb驱动程序设置)
    psd->flags = PSF_MEMORY;	// 采用MEMORY驱动方式    
    psd->flags |= PSF_MSBRIGHT; 

    // 设置象素格式
    psd->pixtype = PF_TRUECOLOR332;

    subdriver = select_fb_subdriver(psd);
    if (!subdriver) {
        fprintf(stderr,"GAL Common LCD engine: No driver for bpp %d\n", psd->bpp);
        goto fail;
    }

    if (!set_subdriver(psd, subdriver, TRUE)) {
        fprintf(stderr,"GAL Common LCD engine: Driver initialize failed for bpp %d\n", psd->bpp);
        goto fail;
    }

    return psd;

fail:
    return NULL;
}

/* close framebuffer*/
static void fb_close (PSD psd)
{
    if (psd->addr)
        free(psd->addr);
    psd->addr = NULL;
}

static void fb_setpalette (PSD psd, int first, int count, GAL_Color *palette)
{
}

static void fb_getpalette (PSD psd, int first, int count, GAL_Color *palette)
{
}

static void update_rect(PSD psd, int l, int t, int r, int b)
{
    int  bak;
    
	if(l > r) 
	{	
		bak = l;
		l = r;
		r = bak;
	}
	if(t > b) 
	{	
		bak = t;
		t = b;
		b = bak;
	}
	
	LCM_UpdateRects(l, t, r +1 - l, b +1 - t, psd->addr);
}

SCREENDEVICE commlcd = {
    0, 0, 0, 0, 0, 
    0, 0, 0, 0, 0, 
    0, 0, 0, 0, 0, 
    0, 0, 0, 0, 
    NULL, NULL,
    fb_open,
    fb_close,
    fb_setpalette,
    fb_getpalette,
    native_gen_allocatememgc,
    fb_mapmemgc,
    native_gen_freememgc,
    native_gen_clippoint,
    native_gen_fillrect,
    NULL,           /* DrawPixel subdriver */
    NULL,           /* ReadPixel subdriver */
    NULL,           /* DrawHLine subdriver */
    NULL,           /* DrawVLine subdriver */
    NULL,           /* Blit subdriver */
    NULL,           /* PutBox subdriver */
    NULL,           /* GetBox subdriver */
    NULL,           /* PutBoxMask subdriver */
    NULL,           /* CopyBox subdriver */
    update_rect
};

#endif /* _NATIVE_GAL_COMMLCD */