Enrico Vitali asked 11 months ago
I use Windows 10 22H2.
I followed the procedure in detail according to the document: Learn_LVGL_Build_GUIs_for_ESP32_Projects_V1_1.pdf up to page 44. (modul 1.6).
In the ARDUINO IDE 2.3.2 only COM3 appears as the USB network.
Then I installed CH340 driver as recommended but without success. (see details on attached docu).
With the use of COM3 it is not possible to load the example WiFiScan.ino.
What can I do to solve this problem ?
I point out that when I launch Arduino IDE 2.3.2 the following message:
“Some indexes could not be updated with:
404 Not Found: https://raw.githubusercontent.com/espressif/arduino-esp32/ghpages/%20package_esp32_index.json
I thank you for a kind help
Sara Santos Staff answered 11 months ago
Hi.
You mistakenly added a space on the URL when installing the ESP32 boards.
Go to File > Preferences and fix your ESP32 URL in the “Additional boards manager URLs” field.
It should be:
https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
Yours have an extra space.
Regards,
Sara
Enrico Vitali answered 11 months ago
Thank you
Thanks for the advice.
I actually now no longer have the error indication “404 Not Found”.
But the USB network problem on COM3 remains and I cannot download the WiFiScan.ini example.
I get the message : “ Fatal error : Failed to connect to ESP32: No serial data received.
Regards,
Enrico
Sara Santos Staff answered 11 months ago
Do you have the ESP32 boards installed?
Which version?
Regards,
Sara
Enrico Vitali answered 11 months ago
Yes I have the “ESP32 by Espressif” version 3.0.3 -> “ESP32 dev Module”. -> Port “COM3”.
Regards,
Enrico.
Sara Santos Staff answered 11 months ago
Hi.
When you click on the upload button, do you see a lot of dots in the debugging window?
Right after clicking the upload button, after compiling, when you start seeing a lot of dots on the debugging window, hold your board BOOT button for around two seconds. Then, release it and the code should upload.
Regards,
Sara
Enrico Vitali answered 11 months ago
Hi,
I performed the procedure as you indicated ( I see several repeating dots) but the code does not load. I think the problem is related to the USB communication driver that only activates COM3 and that it does not seem to be working .Regards ,
Enrico.
Sara Santos Staff answered 11 months ago
Hi.
Yes. It must be an issue with your USB ports. Does that happen with a regular ESP32 too?
Regards,
Sara
Enrico Vitali answered 10 months ago
After a long holiday break I took up the problem again and found a solution:
I installed a universal USB driver -> CH341SER.EXE
and now the USB channel for code loading is working properly.
Sara Santos Staff answered 10 months ago
That’s great.
Thanks for sharing the solution.
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