void fbdev_init(void)
{
// Open the file for reading and writing
fbfd = open(FBDEV_PATH, O_RDWR);
if(fbfd == -1) {
perror("Error: cannot open framebuffer device");
return;
}
LV_LOG_INFO("The framebuffer device was opened successfully");

// Make sure that the display is on.
if (ioctl(fbfd, FBIOBLANK, FB_BLANK_UNBLANK) != 0) {
perror("ioctl(FBIOBLANK)");
// Don't return. Some framebuffer drivers like efifb or simplefb don't implement FBIOBLANK.
}

#if USE_BSD_FBDEV
struct fbtype fb;
unsigned line_length;

//Get fb type
if (ioctl(fbfd, FBIOGTYPE, &fb) != 0) {
perror("ioctl(FBIOGTYPE)");
return;
}

//Get screen width
if (ioctl(fbfd, FBIO_GETLINEWIDTH, &line_length) != 0) {
perror("ioctl(FBIO_GETLINEWIDTH)");
return;
}

vinfo.xres = (unsigned) fb.fb_width;
vinfo.yres = (unsigned) fb.fb_height;
vinfo.bits_per_pixel = fb.fb_depth;
vinfo.xoffset = 0;
vinfo.yoffset = 0;
finfo.line_length = line_length;
finfo.smem_len = finfo.line_length * vinfo.yres;
#else /* USE_BSD_FBDEV */

// Get fixed screen information
if(ioctl(fbfd, FBIOGET_FSCREENINFO, &finfo) == -1) {
perror("Error reading fixed information");
return;
}

// Get variable screen information
if(ioctl(fbfd, FBIOGET_VSCREENINFO, &vinfo) == -1) {
perror("Error reading variable information");
return;
}
#endif /* USE_BSD_FBDEV */

LV_LOG_INFO("%dx%d, %dbpp", vinfo.xres, vinfo.yres, vinfo.bits_per_pixel);

// Figure out the size of the screen in bytes
screensize = finfo.smem_len; //finfo.line_length * vinfo.yres;

// Map the device to memory
fbp = (char *)mmap(0, screensize, PROT_READ | PROT_WRITE, MAP_SHARED, fbfd, 0);
if((intptr_t)fbp == -1) {
perror("Error: failed to map framebuffer device to memory");
return;
}

// Don't initialise the memory to retain what's currently displayed / avoid clearing the screen.
// This is important for applications that only draw to a subsection of the full framebuffer.

LV_LOG_INFO("The framebuffer device was mapped to memory successfully");

}