Mity CPU Platforms » MityDSP-L138 (ARM9 Based Platforms)

/**

 * \file fbfill.cpp

 * very simple VGA frame buffer pattern fill

 * to compile:

 * /usr/local/angstrom/arm/bin/arm-angstrom-linux-gnueabi-g++ -o fbfill fbfill.cpp

 *

 * 2010 (c) Critical Link LLC. This file is licensed under

 * the terms of the GNU General Public License version 2. This program

 * is licensed "as is" without any warranty of any kind, whether express

 * or implied.

 *

 */

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

int main(int argc, char** argv)

{

    int w = 640;

    int h = 480;

    int s = h/(8 *sizeof(unsigned short));

    unsigned short bitlane = 0;

    const char* devname = "/dev/fb";

    for(int aa = 1; aa < argc -1; ++aa)

    {

    	if(0 == strncmp(argv[aa],"-w",2) && argc > (aa+1))

  		{

  			w=atoi(argv[aa+1]);

  			++aa;

  		}

  		if(0 == strncmp(argv[aa],"-h",2) && argc > (aa+1))

  		{

  			h=atoi(argv[aa+1]);

  			++aa;

  		}

    }

    printf("Framebuffer w = %d h = %d\n", w,h);

    FILE* fp = NULL;

    // un-blank the display

    fp = fopen("/sys/devices/platform/da8xx_lcdc.0/graphics/fb0/blank", "w");

    if(fp)

    {

        fwrite("1\n",2,1,fp);

        fclose(fp);

    }

    printf("opening %s\n",devname);

    fp = fopen(devname,"w");

    if (!fp)

    {

        perror(devname);

        return(2);

    }

    unsigned short* pdata = new unsigned short[w];

    for (int xx = 0; xx < (w); ++xx)

    {

        pdata[xx] = 0xFFFF;

    }

    fwrite(pdata,2,w,fp);

    for (int yy = 1; yy < (h-1); ++yy)

    {

        pdata[0] = 0xFFFF;

        for (int xx = 1; xx < (w-1); ++xx)

        {

            pdata[xx] = 1 << bitlane;

        }

        pdata[w-1] = 0xFFFF;

        fwrite(pdata,2,w,fp);

        if (yy && (yy%s == 0))

            ++bitlane;

    }

    for (int xx = 0; xx < (w); ++xx)

    {

        pdata[xx] = 0xFFFF;

    }

    fwrite(pdata,2,w,fp);

    delete [] pdata;

    return 0;

}