The serial port is disconnected?

www0904
Posts: 4
Joined: Sat Jul 16, 2022 3:58 pm

The serial port is disconnected?

Postby www0904 » Sat Jul 16, 2022 4:09 pm

When idf.py -p COM3 Flash monitor is executed, the serial port connection fails.How should be solved excuse me?
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ESP_Sprite
Posts: 9708
Joined: Thu Nov 26, 2015 4:08 am

Re: The serial port is disconnected?

Postby ESP_Sprite » Sun Jul 17, 2022 1:02 am

What hardware are you using? What software, what OS, do you use a VM?

www0904
Posts: 4
Joined: Sat Jul 16, 2022 3:58 pm

Re: The serial port is disconnected?

Postby www0904 » Sun Jul 17, 2022 1:58 am

The hardware is ESP32S3-Eye, no VIRTUAL machine is used, and the operating system is Windows. And I tried again later, there was a permission error, I found online that the serial port was occupied, may I ask how I should solve it?
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ESP_Sprite
Posts: 9708
Joined: Thu Nov 26, 2015 4:08 am

Re: The serial port is disconnected?

Postby ESP_Sprite » Sun Jul 17, 2022 2:33 am

That board uses the internal USB-serial-JTAG converter. You may have firmware loaded in there that is stuck in a bootloop, making it hard to reprogram it. The way around that is to manually put the board into download mode: hold the button labeled 'DOWNLOAD', press and release the button labeled 'RST', release the 'DOWNLOAD button and try uploading the program again.

www0904
Posts: 4
Joined: Sat Jul 16, 2022 3:58 pm

Re: The serial port is disconnected?

Postby www0904 » Mon Jul 18, 2022 9:11 am

Thank you very much. It's ready for normal use

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