BOOT as GPIO input
Posted: Wed Jan 31, 2024 9:40 pm
Hi,
I'm trying to design my esp32 based project and I would like use BOOT pin (pull-up during startup) as GPIO configured as output.
It is going to control another cheep e.g. shift register. I'm uploading software via uart with programator like in picture below:
https://dl.espressif.com/dl/schematics/ ... v4-sch.pdf (USB UART + SWITCH part).
I know that during startup there is sensing procedure in esp32, which is pulling up BOOT pin and I have to ensure that design would be safe for sensing procedure and by accidental pushing boot switch when BOOT pin is used as output.
Do you think if I add additional resistor between BOOT connector and IO0 would be enough?
I'm trying to design my esp32 based project and I would like use BOOT pin (pull-up during startup) as GPIO configured as output.
It is going to control another cheep e.g. shift register. I'm uploading software via uart with programator like in picture below:
https://dl.espressif.com/dl/schematics/ ... v4-sch.pdf (USB UART + SWITCH part).
I know that during startup there is sensing procedure in esp32, which is pulling up BOOT pin and I have to ensure that design would be safe for sensing procedure and by accidental pushing boot switch when BOOT pin is used as output.
Do you think if I add additional resistor between BOOT connector and IO0 would be enough?
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