| STM32F469 Discovery |
| =================== |
| |
| This tutorial describes how to use the predefined Buildroot |
| configuration for the STM32F469 Discovery evaluation platform. |
| |
| Building |
| -------- |
| |
| make stm32f469_disco_sd_defconfig |
| make |
| |
| Flashing |
| -------- |
| |
| ./board/stmicroelectronics/stm32f469-disco/flash_sd.sh output/ |
| |
| It will flash the U-boot bootloader. |
| |
| Creating SD card |
| ---------------- |
| |
| Buildroot prepares an"sdcard.img" image in the output/images/ directory, |
| ready to be dumped on a SD card. Launch the following command as root: |
| |
| dd if=output/images/sdcard.img of=/dev/<your-sd-device> |
| |
| *** WARNING! This will destroy all the card content. Use with care! *** |
| |
| For details about the medium image layout and its content, see the |
| definition in board/stmicroelectronics/stm32f469-disco/genimage.cfg. |
| |
| Framebuffer |
| ----------- |
| After Linux boots, /dev/fb0 will be accessible. You can control the |
| brightness of the display after enabling the framebuffer by running the |
| following commands: |
| |
| # echo 0 0 > /sys/class/graphics/fb0/pan |
| # echo 255 >/sys/class/backlight/40016c00.dsi.0/brightness |
| |
| The brightness ranges from 0 to 255, as you can see running the |
| command: |
| |
| # cat /sys/class/backlight/40016c00.dsi.0/max_brightness |
