sketch is being uploaded but the serial monitor is not showing anything

Q&A Forum › Category: ESP32 › sketch is being uploaded but the serial monitor is not showing anything

Abdulla Anas asked 5 months ago

i have a esp32s3 wroom n16r8 and when i am uploading the wifi scan sketch it is taking like 2 minutes to upload and when it is getting uploaded the serial monitor is showing blank. com and module everything is selected correctly yet serial monitor is blank also i tested both 9600 and 115200 baud rate yet same blank

5 Answers

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Sara Santos Staff answered 5 months ago

Hi.
You may need to press the RST or EN button on the board for it to start running the code.
Let me know if this helps.
Regards,
Sara

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Abdulla Anas answered 5 months ago

enabling usb cdc helped me thanks btw

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Sara Santos Staff answered 5 months ago

Great.
I’ll mark this issue as resolved. If you need further help, you just need to open a new question in our forum.
Regards,
Sara

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Bernie answered 4 months ago

Yes on the S3, after an upload, it closes the serial port so Serial Monitor ceases to work.
So on the Arduino IDE, you must set Tools/USB CDC On Boot/Enabled. After upload one sometimes must hit RST. Then the thing starts working.

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Sara Santos Staff answered 4 months ago

Thanks for providing that info.
Regards,
Sara