Appendix
IBR117
User’s Manual
39
J.
LVDS Test
//Open the file for reading and writing
framebuffer_fd = open("/dev/fb0", O_RDWR);
// Get fixed screen information
ioctl(framebuffer_fd, FBIOGET_FSCREENINFO, &finfo)
// Get variable screen information
ioctl(framebuffer_fd, FBIOGET_VSCREENINFO, &vinfo)
// Figure out the size of the screen in bytes
screensize = vinfo.xres * vinfo.yres * vinfo.bits_per_pixel / 8;
// Map the device to memory
fbp = (char *)mmap(0, screensize, PROT_READ | PROT_WRITE, MAP_SHARED, framebuffer_fd, 0);
// Figure out where in memory to put the pixel
memset(fbp, 0x00,screensize);
//draw point by fbp
long int location = 0;
location = (x+g_xoffset) * (g_bits_per_pixel/8) +
(y+g_yoffset) * g_line_length;
*(fbp + lo 0) = color_b;
*(fbp + lo 1) = color_g;
*(fbp + lo 2) = color_r;
//close framebuffer fd
close(framebuffer_fd);
Summary of Contents for IBR117
Page 1: ...IBR117 3 5 ARM based SBC With NXP Cortex A9 Dual Core i MX6 User s Manual Version 1 0 May 2018...
Page 8: ...viii IBR117 User s Manual This page is intentionally left blank...
Page 15: ...General Information IBR117 User s Manual 7 1 1 7 Dimensions Unit mm...
Page 16: ...8 IBR117 User s Manual IBR117 Reference Heat Sink...
Page 20: ...12 IBR117 User s Manual 2 3 Jumper Connector Locations on IBR117 Board diagram of IBR117...
Page 39: ...31 Appendix This section provides the information of reference code...