Check The Serial Output - Espressif ESP32-DevKitC Getting Started Manual

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�� Notes:
The parameters highlighted in blue represent the baud rate, serial port, flash frequency, and the flash
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mode, respectively. You can change these parameters as necessary.
Only DIO mode is currently supported. Further updates of download tools and scripts will allow support
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for both the QIO and DIO modes.
• To retrieve "help information", input python esptool.py -h. For information on download commands,
input python esptool.py write_flash -h.

2.4. Check the Serial Output

Launch the serial terminal on the PC and press the "EN" button on the development board.
The system is now expected to enter the SPI boot mode and output the following:
Espressif
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Figure 2-3. SPI Boot Mode Output
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2. Download Process
2016.11