arduino-esp32 | Arduino core for the ESP32

 by   espressif C Version: 2.0.9 License: LGPL-2.1

kandi X-RAY | arduino-esp32 Summary

kandi X-RAY | arduino-esp32 Summary

arduino-esp32 is a C library typically used in Internet of Things (IoT), Arduino applications. arduino-esp32 has no bugs, it has no vulnerabilities, it has a Weak Copyleft License and it has medium support. You can download it from GitHub.

Arduino core for the ESP32

            kandi-support Support

              arduino-esp32 has a medium active ecosystem.
              It has 10882 star(s) with 6849 fork(s). There are 482 watchers for this library.
              There were 4 major release(s) in the last 12 months.
              There are 415 open issues and 5398 have been closed. On average issues are closed in 311 days. There are 69 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of arduino-esp32 is 2.0.9

            kandi-Quality Quality

              arduino-esp32 has no bugs reported.

            kandi-Security Security

              arduino-esp32 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              arduino-esp32 is licensed under the LGPL-2.1 License. This license is Weak Copyleft.
              Weak Copyleft licenses have some restrictions, but you can use them in commercial projects.

            kandi-Reuse Reuse

              arduino-esp32 releases are available to install and integrate.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of arduino-esp32
            Get all kandi verified functions for this library.

            arduino-esp32 Key Features

            No Key Features are available at this moment for arduino-esp32.

            arduino-esp32 Examples and Code Snippets

            No Code Snippets are available at this moment for arduino-esp32.

            Community Discussions


            Download binary from GCS using HttpsOTAUpdate
            Asked 2021-Nov-19 at 10:14

            So I'm trying to download a binary file from a GCS (google cloud storage) bucket to update the firmware of an esp32 using the following supported structure:


            code looks like this



            Answered 2021-Nov-18 at 11:37

            Downloading stuff from a storage bucket requires authenticating your client. You can't just point an HTTPS client to a storage bucket URL and merrily download. You need to generate a OAuth2 token first, then include it in a header of your request:




            Asked 2021-Sep-22 at 09:32

            I am trying to use arduino-esp32 methods defined in file mqtt_client.h for my project. I've used this: example.

            My device is connecting to IoT Hub Azure and successfully sends data to it. My problem is when I'm trying to send a message from IoTHub to device from azure console. The MQTT_EVENT_DATA is not fired.



            Answered 2021-Sep-22 at 09:32

            So, as romkey mentioned, I subscribed to C2D topic and after that EVENT_DATA is triggered.



            ESP32 MQTT event processing
            Asked 2020-Dec-21 at 14:30

            I am trying to use arduino-esp32 methods defined in file mqtt_client.h for my ESP32/Arduino IDE project :

            I am struggling to make an event handler out of this.

            I currently have:



            Answered 2020-Dec-21 at 02:21

            The type of your event handle is wrong, it should return an esp_err_t so instead be:



            How to delete and restart hw timer (for interrupts) on demand for esp32 arduino (stepper motor controller application)
            Asked 2020-Nov-04 at 02:34

            I am having trouble figuring out how to disable then re-enable (upon a triggering event) the hw (esp32-hal-timer) timer from the esp-arduino library, here for a stepper motor controller application with my esp32 development board. It will count down and trigger the ISR as desired as many times as I want, but when I disable it (so that the ISR is not unnecessarily called), it will not start when I try to start it again. The weird thing is that it is started the same way it was the first time, so I'm not sure if it is an issue with my code or the way that that particular library handles garbage collection. This is also my first time trying to work with interrupts at all. My code is below.

            To avoid having to wade through too much, the general process is to initialize the timer (called motorTimer) in the setup method, then connect to wifi, within the callback method for mqtt any message with the payload of an integer will trigger the 'moveTo' method in the motor.h class, and then the update method in that same class will be triggered when the ISR timer is triggered. The timer will then change its time with each iteration, for acceleration compensation. This works great, until it comes time to kill the timer and then restart it later - then the ISR is not called at all, like the timer wasn't stopped properly. And that is where my issue lies.



            Answered 2020-Nov-04 at 02:34

            The word 'restart' had me thinking that it would just immediately start the timer again, but it turns out that is not the case. If the reload was set false previously, the timer has to be set again before it will actually execute - which works perfectly for my use case. Below is my new code (figured I would include the wifi and mqtt stuff to help anyone else as well):



            Add Esp32-Wifi library to PlatformIO
            Asked 2020-Sep-19 at 17:31

            Hello i can't find out how i can add the Esp32 Wifi Library ( to my PlatformIO Project (VS-Code). How am I able to add and import it? I tried to copy it into the libs folder, and add the link to lib_deps

            And Stackoverflow just says this Problem is not described good enough... Sorry for the lines at the end



            Answered 2020-Sep-19 at 17:31

            You don't need to explicitly add the Wifi library. It's part of the ESP32 Arduino Core support.

            You do need a correctly written platformio.ini file for that to work. That file would look something like this:



            ESP32 not recognising that any device is connected to its access point
            Asked 2020-Jun-17 at 16:01

            I have gotten my ESP32 to create a wireless access point. It shows up fine on any device however, no matter what device I try and connect (iPhone 6s, iPhone 8, Windows desktop), the ESP32 just says that there is no device connected. My code is:



            Answered 2020-Jun-17 at 16:01

            That's not how this works. Your program is working properly; your expectations are wrong.

            WiFiServer is poorly named. It has nothing to do with clients connecting to the wifi network that softAP creates. Instead it creates a server listening on the TCP port number that you gave it when you created the object (in this case, 48899). It should really be called TCPServer but sadly, it's not, and we all just have to live with it.

            If I connect a device, it should increase to 1 however it doesn't.

            This is incorrect. If you connect a device to the wifi network it's not the same thing as connecting to a WiFiServer.

            For your code to work, each device that connects to the wifi network your ESP32 is providing will also have to be run a program on it that opens a TCP connection to port 48899 on the ESP32. Otherwise the loop will never see a client available because there will be none.

            If you want to know whether any devices have connected to the WiFi access point, you can use WiFi.softAPgetStationNum() - it will return the number of currently connected devices.

            For instance,



            Downloading file on ESP32 using fails -- "Task watchdog" error
            Asked 2020-May-03 at 20:10

            I'm testing code downloading large files (approx 1mb OTA binary file) from a server

            The error happens midway through the download:



            Answered 2020-May-03 at 20:10

            You're doing too much in the HTTP callback. While the callback is running, the watchdog timer can't be reset. If that happens for too long you'll get the error you're seeing - Task watchdog got triggered. The big clue is that it happens in the async_tcp task.

            Try rewriting your code so that the HTTP_POST handler sets a global variable to indicate that execOTA() needs to be called, rather than calling it itself. Then have loop() do the heavy lifting.

            Something like this:



            arduino (esp8266/esp32) ticker callback class member function
            Asked 2020-Apr-02 at 08:03

            Can someone help me with the following code ?
            I have a custom class and I want to define a callback for the ticker the function onTickerCallback().
            It compiles and runs on ESP8266 but not on ESP32.
            I see that ESP32 Ticker::once has a different declaration but my c++ knowledge does not help me to find a solution.




            Answered 2020-Apr-02 at 08:03

            The implementations of the two Ticker.h files are a bit different. On ESP8266, the once method expects type "callback_function_t" where callback_function_t is defined as:


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install arduino-esp32

            You can download it from GitHub.


            You can use Arduino-ESP32 Online Documentation to get all information about this project.
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries

            Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link