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Questions tagged [esp32]

For issues relating to the ESP 32 Wi-Fi and Bluetooth combo chip of Espressif.

The ESP32 is a 2.4 GHz Wi-Fi and Bluetooth combo chip from Espressif and the successor to the . It is designed for mobile, wearable electronics, and Internet-of-Things (IoT) applications.

Resources:

The CPU itself is based on the Xtensa ISA. Use for questions about Xtensa assembly language, ISA, and gcc options. But not for problems compiling / linking with the ESP32 SDK; that's specific to the vendor-supplied SDK not really the ISA.

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ESP32 OTA read local files

I have this code in html, which has a form to send files, but I would like to read these files directly from a path on the computer, how do I do that? I'm new to the language Thanks const char* serverIndex = "
Matt Dogg
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FASTLED.show() stops working when working in core 1 FREERTOS (after deleting the task running a pattern and creating a new one)

I have a couple of pattern functions and one task (Task1) which runs on core 1. I receive data (pattern no.) from BLE in core 0. Depending on the data, I create the task above with the task function as the chosen pattern. Problem comes when I want…
Creator Muncan
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LVGL Compile error “dram0.bss’ will not fit in region `dram0_0_seg’” with ILI9488 & ESP32 on Arduino Core

I constantly get this error, no matter what I'm doing... I have an ILI9488 with 4-wire SPI and a GT911 capacitive Touch driver on an ESP32 (2MB, no PSRAM, arduino core). this is my main.ino-file: #include #include #include…
kokospalme
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ESP32-WROOM-32 callback function and memory issue

We are currently testing a library related to the IoT Platform with ESP32-WROOM-32 now. _token is defined in .h file. In one file HttpDownstream.cpp: void HttpDownstreamClient::tokenCreate(char* URL, char* Subname, char* Suber, int expiretime) { …
YIL
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Arduino - The serial value is not saved in PLX-DAQ

(Sorry for using the translator in poor English.) I am making a balance bot using PID control for exhibition at a university in Korea. I use esp32 pico kit, and I printed pitch, roll, and yaw values in serial print in real time. An attempt to save…
Rokang
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esp32cam trying to save image from camera into SD card, Espressif framework

I'm using the Esp32cam and platformio/VScode. I'm trying to save the image taken from the camera into the Sdcard. I manage to take the photo but I'm unable to save it using, either fwrite or fprintf. I did try using the serial monitor but for some…
lightshadown
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Ambiguous overloaded call when compiling for ESP32

Disclaimer: I haven't done C/C++ in ages and have decided to dive into the deeper end here. I'm attempting to build esp32-opencv which is basically a version of OpenCV with some necessary changes for the ESP32. I'm seeing the following error on make…
GKruger
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Cannot locate project.cmake in my esp-idf framework

I cxannot build any of my ESP projects. I am using VSCode with platformio. I keep getting the following error: ***CMake Error at CMakeLists.txt:2 (include): include could not find load file: C:\XXXXXX\XXXXXX.platformio\packages\framework…
JoeyB
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ESP32: Guru Meditation Error: Core 1 panic'ed (StoreProhibited) in GY521 I2C project

Good afternoon, I hope you are well. I'm new here on SO, I apologize in advance for my English. I'm doing a project with 4 accelerometers and a TCA9548A multiplexer to talk to an esp32. The samples of the 4 sensors are correct, but this error…
Thiago Kenzo
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Not getting error response of sent packet from ESP32C3 LwIP TCP server

I am facing issue of not receiving error in return of "send()" function in case of TCP socket disconnected at client side. I am using example TCP server(ESP32C3) by using LwIP stack (version v2.1.3). To debug this issue I have added delay of 50ms…
craval
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How to restart device without reseting RTC clock?

Hi to restart the device without resetting RTC clock. For example, when I run: import machine print(str(time.localtime())) # Set the…
GILO
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Write specific NVS value on esp32

I am able to write NVS values by creating a pre-generate NVS data partition (as binary file) and write it in the esp32 partition. But I am unable to read these values despite there are indeed present in the NVS partition. The commands I executed…
jetLagMan
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Installing ESP-IDF by Visual Sutdio in Win10 meets some problems

I've already installed the offline installer from https://dl.espressif.com/dl/esp-idf/, and then chose the "use existing setup" option from the extended program ESP-IDF, and then the output window shows the following information: error: Microsoft…
Cisco
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Android ESP32 BLE read after write not working

I'm writing an embedded system which doesn't have an internet connection, so the main interaction is using BLE from an Android device. (ESP32 is using the NimBLE-Arduino library) I have some write characteristics and some read characteristics. Each…
La bla bla
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How to find total acceleration data from X,Y,Z axis from mpu9250 when vibration is produced in the accelerometer

I want to find acceleration data when small vibration produced in mpu9250 module....Total acceleration means the acceleration produced by the vibration from X,Y and Z axis of accelerometer. float r = sqrt((IMU.getAccelX_mss()*IMU.getAccelX_mss())…
moaz
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