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Talking to Espressif’s Bootloader

qsantos · published 15 May 2025

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How to use “real” UART Read at the source ↗

Arduino’s Automatic Reset Read at the source ↗

Linux always toggles DTR & RTS Read at the source ↗

Espressif’s Automatic Reset Read at the source ↗

The ESP32-S2 reset pin Read at the source ↗

Reproducing Espressif’s reset circuit Read at the source ↗

The missing part of Espressif’s reset circuit Read at the source ↗

Transistors in reverse and redundant circuits Read at the source ↗

The serial TX path seems to be down Read at the source ↗

https://en.wikipedia.org/wiki/Serial_Line_Internet_Protocol

en.wikipedia.org

https://docs.espressif.com/projects/esptool/en/latest/esp32/advanced-topics/serial-protocol.html

docs.espressif.com

https://github.com/espressif/esptool/blob/a4ddac0aa46c1706d9466024f9ebb7bb01008bae/esptool/__init__.py

github.com

https://github.com/espressif/esptool/blob/a4ddac0aa46c1706d9466024f9ebb7bb01008bae/esptool/loader.py

github.com