Hardware Development; Esp32 Modules; Esp32 Development Boards; Download Guidelines - Espressif Systems ESP32 Hardware Design Manuallines

Chapter 5

Hardware Development

5.1 ESP32 Modules

For a list of ESP32 modules please check the
To review module reference designs please check the

5.2 ESP32 Development Boards

For a list of the latest designs of ESP32 boards please check the
website.

5.3 Download Guidelines

You can download firmware to ESP32 via UART.
To download via UART:
1. Before the download, make sure to set the chip or module to Joint Download Boot mode, according to Table
Boot Mode Control.
2. Power up the chip or module and check the log via the UART0 serial port. If the log shows "waiting for
download", the chip or module has entered Joint Download Boot mode.
3. Download your firmware into flash via UART using the
4. After the firmware has been downloaded, pull GPIO0 high or leave it floating to make sure that the chip or
module enters SPI Boot mode.
5. Power up the chip or module again. The chip will read and execute the new firmware during initialization.
Note:
• It is advised to download the firmware only after the "waiting for download"log shows via serial ports.
• Serial tools cannot be used simultaneously with the Flash Download Tool on one com port.
Modules section on Espressif's official website.
Documentation section on Espressif's official website.
Development Boards
Flash Download
section on Espressif's official
Tool.
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