# Path to the input event device (usually event0 or event1, depends on probe order) # You may need to check /proc/bus/input/devices to find the exact eventX for your gpio-keys RECOVERY_DEV="/dev/input/event0" RECOVERY_KEY="KEY_RECOVERY" Cs 1.6 Infinity Gigabyte Download Didn't Know Why.
Edit your board-specific device tree file (usually located in device/config/chips/t507/configs/your_board/board.dts or similar path depending on your specific SDK version). Loveherfeet 24 06 22 Olivia Madison Giantess Fe Better Link
# Start Recovery Check /device/config/chips/t507/init.recovery.sh & Alternatively, add it to the appropriate runlevel if using a standard SysVinit or Procd system. Ensure the kernel supports GPIO keys. Run make kernel_menuconfig :
Since you referred to the (which is the chipset used in the Allwinner T507 and H616 SoCs, commonly found in automotive and Android TV boxes), asking to "make a feature" is a broad request.
In embedded development, "making a feature" usually means adding a driver, enabling a hardware capability, or modifying the system behavior.
Here is a comprehensive guide on how to implement a feature. This is a highly valuable feature for firmware developers that allows a user to restore the device to factory settings via a physical button or a specific key combination during boot. Feature Project: "One-Key Factory Recovery Mode" Goal: Modify the firmware so that if the user holds a specific GPIO button (or the IR remote "Menu" key) during boot, the device wipes the data partition and reboots into a fresh state.
#!/bin/sh
if check_recovery; then echo "Entering Factory Recovery Mode..." # 1. Unmount data partition if mounted umount /dev/by-name/data # 2. Format the data partition (Factory Reset) mkfs.ext4 /dev/by-name/data # 3. Reboot reboot fi Ideally, this logic happens in U-Boot (before loading the kernel) to save time, but doing it in userspace (init) is easier to implement for beginners. Step 3: Integrate into Build System You need to ensure this script runs automatically. In your SDK's rootfs configuration (usually target/allwinner/t507/busybox_init/init.d/rcS or similar startup script), add: