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by ewoewo
Tue May 21, 2024 8:19 am
Forum: Hardware
Topic: Low pegel is to high
Replies: 1
Views: 1093

Low pegel is to high

Hi,

I use ESP32-S3-mini Modul.

I try to send on UART U0TXD/GPIO43.

The U0TXD/GPIO43 is NOT connected with the RX PIN from other uC and the pull-up Resistor is removed.

I see on my scope a low pegel ~ 1,0V.

If I connect U0TXD/GPIO43 with RX PIN from my uC -> the pegel is still ~1,0V.

The low ...

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