On the ESP-WROOM-32, the GPIO0 pin is used for auto-programming in the schematic. I plan to use this GPIO0 pin for LED indication. Will this cause any issues?
In this website:
you can see the function of GPIOs.
How do you intend to turn on the LED?
From the GPIO through a resistor to GND or to +3.3V?
GPIO through a resistor to GND
GPIO0 outputs PWM signal at boot and must be LOW to enter flashing mode
so long as your circuit supports this you can use GPIO0
That will pull GPIO0 low and it will always be in download boot mode.
Connecting it to 3.3V may or may not work.
Best not to connect anything on GPIO0 that will pull it low or will cause it to sink additional current during boot
I will use this GPIO0 pin with a blinking LED. Will it create any issues when uploading the program or other time? And this GPIO0 is also connected with the EN pin ( In the schematic ) for auto programming
See post #5
Thank you so much for your guidance sir