How RST (EN) pin might be used for hardreset ESP32?

Q&A Forum › Category: ESP32 › How RST (EN) pin might be used for hardreset ESP32?

Omar Menchaca asked 4 years ago

Hello,

Despite the fact ESP32 board has RST (EN) push button mounted over board (near smart usb) .. how RST (EN) PIN might be used to serve this purpose?

I’m guessing EN pin might be used to provide a hardreset (push-button) available whenever ESP32 Devkit V1 board doesn’t wake up after deep sleep. I’ve encountered esp32 not always wakes up on the time committed nor pressing ext(0) assigned to RTC-GPIO 33pin.

Sorry to bother you with this stupid question but I can’t find any reference for RST (EN) pin on board ESP32 Devkit V1.

Thank you for infinite patience and time,

Omar Menchaca

Question Tags: Deep sleep, en pin, hardreset, reset, rst pin, wake up

1 Answers

0 Vote Up Vote Down

Sara Santos Staff answered 4 years ago

Hi.
When the EN pin is pulled to GND, it resets the ESP32 boards. It’s the same thing as pressing the on-board reset button.
So, you can connect a pushbutton to the GPIO labeled as EN. You should wire the pushbutton so that when it is pressed, it connects to GND. This way, when you press that button the ESP32 will reset.
Let me know if this is clear.
Regards,
Sara