Just got the board. When I connect to it through usb/serial terminal app, on board startup, it appears to continually be scanning for wifi points:
scan start
scan done
2 networks found
1: Nobody Close (-49)*
2: Nobody Close_2GEXT (-74)*
This never seems to end. When I try to erase the flash with esptool:
esptool.py --chip esp32 --port COM3 --baud 115200 erase_flash
just get a timeout eventually. Any suggestion
esptool cannot connect to HiLetgo® ESP-WROOM-32
-
- Posts: 28
- Joined: Wed Mar 30, 2016 4:09 pm
Re: esptool cannot connect to HiLetgo® ESP-WROOM-32
Hello @lamikan,
I guess that the problem you're having is the baud rate you're to connect to the board, as I can see you are trying withplease try with .
Another thing I strongly recommend is upgrade the esptool if you haven't done it yet.
I tried the command I post above with the esptool v2.4.1 and it worked like a charm.
Hope it helps
Regards.
I guess that the problem you're having is the baud rate you're to connect to the board, as I can see you are trying with
Code: Select all
115200
Code: Select all
esptool.py --chip esp32 --port <your device port> --baud 460800 erase_flash
Another thing I strongly recommend is upgrade the esptool if you haven't done it yet.
I tried the command I post above with the esptool v2.4.1 and it worked like a charm.
Hope it helps
Regards.
Re: esptool cannot connect to HiLetgo® ESP-WROOM-32
Can you provide a link to the board you purchased? If nothing works, maybe we can look at the sales page and find a circuit diagram. Sometimes it could be the manufacturing wasn't perfect and you have a few disconnected pins. Does your board look good on closeup inspection?