1STM32F469 Discovery 2=================== 3 4This tutorial describes how to use the predefined Buildroot 5configuration for the STM32F469 Discovery evaluation platform. 6 7Building 8-------- 9 10 make stm32f469_disco_defconfig 11 make 12 13Flashing 14-------- 15 16 ./board/stmicroelectronics/stm32f469-disco/flash.sh output/ 17 18It will flash the U-boot bootloader. 19 20Creating SD card 21---------------- 22 23Buildroot prepares an"sdcard.img" image in the output/images/ directory, 24ready to be dumped on a SD card. Launch the following command as root: 25 26 dd if=output/images/sdcard.img of=/dev/<your-sd-device> 27 28*** WARNING! This will destroy all the card content. Use with care! *** 29 30For details about the medium image layout and its content, see the 31definition in board/stmicroelectronics/stm32f469-disco/genimage.cfg. 32 33Framebuffer 34----------- 35After Linux boots, /dev/fb0 will be accessible. You can control the 36brightness of the display after enabling the framebuffer by running the 37following commands: 38 39 # echo 0 0 > /sys/class/graphics/fb0/pan 40 # echo 255 >/sys/class/backlight/40016c00.dsi.0/brightness 41 42The brightness ranges from 0 to 255, as you can see running the 43command: 44 45 # cat /sys/class/backlight/40016c00.dsi.0/max_brightness 46