[Tab5] How to de-init the touch panel?

ImLunchtime

I'm creating a firmware manager project (which loads bin firmwares from the SD card and runs them on the device), for the Tab5 with ESP-IDF v5.4.1 and LVGL.

I have finished the firmware flashing functions (through ESP32's built-in OTA functions) but now I met a problem with the Tab5's GT911 touch panel.

Since the Launcher shall reboot the system after loading a firmware (to boot into the firmware), I simply called esp_restart() to reboot the ESP32.

But after the ESP32 reboots, the touch panel isn't working (the screen shows the UI though). The touch panel works if I manually rebooted the device with the power button.
I think that's a problem with the GT911 touch driver not being correctly de-initialized, but I didn't find any functions to de-init the touch panel.

Are there any ways to de-init the GT911 touch driver, or any ways to make sure the firmware, after a software reboot, can have access to the touch panel?

Since this is a firmware manager project, I can't modify the user's custom firmware, so any methods that involves changing the user's firmware won't work for me.

My project's repo is at: https://github.com/ImLunchtime/Tab5_Launcher

ImLunchtime

Problem fixed with just two lines of code:

esp_sleep_enable_timer_wakeup(50000); // 50ms
esp_deep_sleep_start();

I used this to replace esp_restart() and it worked. Putting the device to deep-sleep makes use of the PMS150G chip and basically turned the device off and then on again, so actually there is a way to let the device force a full reboot on itself.

yuyun2000

@ImLunchtime chatbot是否解决了你的问题？他的回复有什么帮助？

ImLunchtime

Yes, the GT911 chip only needs to be turned off and then on again.

ImLunchtime

@yuyun2000 chatbot还是有点用的这是它的回复里最后一个方法（也是唯一一个能用的）

yuyun2000

@ImLunchtime 有建议欢迎多提~