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Unanswered Questions

705 questions with no upvoted or accepted answers
5 votes
0 answers
903 views

Internet in ESP32 is not working with IPv6

I am using ESP-WROOM-32D in STA mode with Arduino IDE(2.0.5) ESP32 board(2.0.9). I am trying to do http post request with ESP32. Router that provides internet supports only IPv6. Here I am getting ...
5 votes
0 answers
2k views

How to set ESP32 RTC clock source

According to the manufacturer's link below, the default RTC timekeeping in the ESP32 is supposedly based on Internal 150 kHz RC oscillator. Apparently, there is another option called Internal 8.5 MHz ...
4 votes
0 answers
140 views

Arduino IDE v 2.2.1 log file not limited in size (on Ubuntu 23.04)

I was learning/building with a new Arduino Nano ESP32 yesterday and left the Arduino IDE running overnight on Ubuntu 23.04 and it used all the space on my hard drive to write log files which broke my ...
4 votes
0 answers
2k views

Is there a way to use ESP8266 in promiscuous(monitor) mode and see the the wifi packets?

I didn't find much documentation about ESP promiscuous mode (just from the espressif sdk although I'm using ArduinoIDE https://docs.espressif.com/projects/esp8266-rtos-sdk/en/latest/api-reference/wifi/...
4 votes
0 answers
9k views

How do I interpret the esp8266 "boot mode" message?

Everytime the chips resets, we get the reason and the next boot mode. ets Jan 8 2013,rst cause:XXX, boot mode:(YYY,ZZZ) For XXX we can check the meaning here. For YYY and ZZZ I am not sure but I ...
4 votes
0 answers
343 views

Is Arduino WiFi101 library fully compatible with Arduino MKR1000 with WiFi HW?

Will all the classes in this library work with the MKR1000 with wifi hardware? The guide mentions "wifi shield". So, does the library work exactly the same with the Arduino MKR100 (with the onboard ...
3 votes
0 answers
1k views

How to use C++20 in Arduino IDE?

I'm writing a program for esp32 using the Arduino IDE that needs to count the number of '1' bits in a byte. I found a post elsewhere that says there's a nice function in the standard library to do it: ...
3 votes
0 answers
782 views

How can I connect my ESP32-WROOM-32 to Arduino IDE?

I'm using this 'ESP32-WROOM-32' but I can't find the correct board in the IDE. I see the esp32-wroom-DA (edit, i took it to the store where i bought it and it worked fine with theirs. they were on ...
3 votes
0 answers
774 views

Programming ESP32-S3 WROOM with a flexy pin board

I am using ESP32-S3-WROOM-1-N8 module https://www.digikey.de/de/products/detail/espressif-systems/ESP32-S3-WROOM-1-N8/15200089 . I have compared pinout of all Wroom modules ESP32 ESP32-S3 as well as ...
3 votes
0 answers
2k views

How to correctly synchronize time with NTP server?

I want to synchronize time with NTP server once in some time. I am using DOIT ESP32 DEVKIT V1, I tried with getLocalTime() function but it returned true even without wifi, but as I know without wifi ...
3 votes
0 answers
1k views

ESP32-C3 SPI Class documentation/features?

ESP32-C3 has a nice feature called GPIO Matrix which allows to map most of it's peripherals to any GPIO pin. And it has feature called IO_MUX which allows direct & faster operations for some of ...
3 votes
0 answers
801 views

ESP32 Bluetooth Master does not connect

I want to connect an ESP32 to a SMA Sunny Boy SB5000-TL Solar convertor over Bluetooth, but I cannot establish a connection and I'm kind of stuck. I use the internal bluetooth module of the ESP32. ...
3 votes
0 answers
1k views

ESP8266 Webserver does not respond

I am trying to reach the webserver running in my Wemos D1 Mini compatible board. I am trying one esp8266 example using Arduino examples "WifiManualServer" code below. I have replaced the SSI ...
3 votes
0 answers
3k views

Using or creating Wi-Fi Direct (P2P) connection on ESP8266

I want to make a Wi-Fi Direct connection with an android device using my ESP8266. According to ESP8266WiFi Documentation and ESP8266 datasheet, the board has a SoftAP mode which is I think what is ...
3 votes
0 answers
563 views

ESP32 HTTP Server request interrupts Telnet session

I have an ESP32 application that uses a web server as a user interface. For auditing and debugging during development I use Serial; however, that is impractical in the installed system. So, I decided ...

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