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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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Error with using BLE and ESPNOW protocol together

My project includes connecting multiple esp32 boards together in server client form, Server sends data to clients, clients receive data, get some input sensor data and send it back to server device. This is performed using ESPNOW(is there a better…
benak ravishankar
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Why is this ESP32 IDF example file throwing so many errors?

I'm attempting to setup a UART communication between an ESP32 and STM32 using the Espressif IDF through VScode on a macbook pro using the M1 processor. Below I have provided an image of one of the problems I've been encountering and cant seem to…
Aaron Underwood
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ESP32: Trying to update UART data on the ESP server webpage using SOCKETS, page stops loading as soon as UART data is sent (UART over webpage)

am using Micropython to make a ESP webserver that can update my UART data live on the page. the page works good as long as there is no UART data. but when UART data is sent, the page stops loading. below is my code. any help would be…
Venky
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Is there a way to change esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP);

this is my first time posting here and sorry if i do not post in the correct category . I want to ask you if there is any possibility to change #define TIME_TO_SLEEP 5; to #define TIME_TO_SLEEP yourInputString = readFile(SPIFFS,…
Cyra Spark
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ESP32 - What are the negative consequences using min_spiffs partition table?

Maybe my question is trivial but I'm wondering why spifss should have a bigger space than bare minimum. Is min_spiffs configuration a good choice for all kind of applications?
thoraz
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ESP32S3 Feather - data sketch upload problem

Im working with ESP32S3 feather right now. I wanted to make web server with it, as I did long time ago with ESP32 Dev board. First, as I write program in VS Code, I tried to upload Filesystem Image through VS, there were no error but when I checked…
Blackhoody
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Can’t find ESP32-S3-WROOM-1-N16R8 (16M Flash/8SRAM) on platformio

I am new to esp32 & platformio, I bought the ESP32-S3-DevKitC-1 which has ESP32-S3-WROOM-1-N16R8(16M Flash/8SRAM), I want to create a new arduino project using platformio on vscode but I am not able to find the right board, the only one that I found…
Ana Houa
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Which is the best way to send wifi credentials from an APP (Android Studio) to ESP32?

As the question says, i was wondering if there is a safe, and non really complex way to send credentials from an APP to an ESP32, in this moment i made an app that connect via bluetooth and send the credentials via serial and it works, but this way…
OVO Cuenta
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Error while trying to include Azure IoT SDK in ESP-IDF

Not able to integrate Azure IoT SDK in ESP-IDF Hello guys, I am trying to use Azure IoT SDK with ESP-IDF.I follow the steps for this to that: Download Azure IoT SDK from link: https://github.com/Azure/azure-iot-middleware-freertos Then I pasted…
Amit Sharma
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How to read register MD02 using ModBus ESP32?

I have an MD02 sensor (SHT20). In the storefront it says that this sensor is part of the MD02 series and not the XY-MD02. But the store description says it can be configured according to the XY-MD02 register. After I tried, the register couldn't…
renaldyks
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esp32 what is ESP_SPP_MAX_MTU?

I just want to know what's the missşon of ESP_SPP_MAX_MTU. I shearched it on internet but I could not find any usable information that. hello everyone, I just want to know what's the missşon of ESP_SPP_MAX_MTU. I shearched it on internet but I could…
Mahmut Hilmi
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UART communication in ESP 32

I am new to esp32 and I am trying uart echo. I tried modifying uart echo code to; #include #include #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "driver/uart.h" #include "driver/gpio.h" #include…
LOGESHWARAN C
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Can I use the UART pin of ESP32 that also works as pins for internal flash?

I'm using AI-Thinker's ESP32-S board, and my use case requires all 3 UARTs present in the board. But, from the pin diagram, I can see that the UART1 pins also work as pins for integrated flash. Of course, I need internal flash to actually be able to…
Vishesh Varma
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sqlite3_step causes esp32 to restart even though valid sql is produced

I have the following code, which when executed, crashes the esp32 with Guru Meditation Error: Core 1 panic'ed (Unhandled debug exception). I'm wondering if there is something wrong with this code that I have overlooked. It produces valid sql that…
Bigbob556677
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How to Change the colour of LED's with fastLED and a ESP32

so I developed an app which will send a series of integers over Bluetooth (for RED, GREEN & BLUE) to a ESP32 which will then change the colour of 3 LED's (WS2811) based on the numbers it receives. It works the first time I send them but when I try…
dazz500
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