displayMgr/src/blank.c File Reference

#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>

Go to the source code of this file.

Classes
struct	display_update_info
Defines
#define	FBIO_IOCTL_BASE   'v'
#define	FBIO_ERASE_WHITE   _IOW(FBIO_IOCTL_BASE, 2, struct display_update_info)
#define	WAVEFORM_4BPP_IMAGE   1
Functions
int	main (int argc, char *argv[])

---

Define Documentation

#define FBIO_ERASE_WHITE   _IOW(FBIO_IOCTL_BASE, 2, struct display_update_info)

Definition at line 30 of file blank.c.

#define FBIO_IOCTL_BASE   'v'

Copyright (C) 2005-2008 iRex Technologies B.V. All rights reserved.

Definition at line 29 of file blank.c.

#define WAVEFORM_4BPP_IMAGE   1

Definition at line 31 of file blank.c.

---

Function Documentation

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 40 of file blank.c.

{
    int fbdev;
    int ret;
    struct display_update_info updateinfo;

    fbdev = open ("/dev/fb0", O_RDWR);
        
    if (fbdev == -1)    
    {
        printf("Error opening framebufferdevice. # mknod /dev/fb0 c 29 0\n");
        exit(-1);
    }

    updateinfo.waveform = WAVEFORM_4BPP_IMAGE;
    updateinfo.sequence = 0;
        
    if ((ret=ioctl(fbdev, FBIO_ERASE_WHITE, &updateinfo))) 
    { 
        printf("Error sending FBIO_ERASE_WHITE: %x\n",ret); 
        exit(-1); 
    }

    close(fbdev);

    return 0;
}