Esp8266 threads

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esp8266 threads

Then post here. The best we can pull-off is FreeRTOS which allows the illusion of multitasking, but is really just a task scheduler Any CPU with some stack space to spare can engage in "cooperative multitasking". It's a big topic, but long story short you as the programmer have to do a bit of extra work not much to notify the CPU when it's OK to multitask.

Options 3 posts Page 1 of 1 3 posts Page 1 of 1. Return to General Discussions. Who is online. I am using an android smart device. The connection[…]. Hi, Probably a dumb question as the ESP was[…]. Halloween is coming up so I did a small project. From prior experience I would say that when saving[…]. Yes I'd also recommend an optocoupler, because sup[…]. Hi, I'm using this working library to extract H2[…]. Thanks for the explanation. If you are in "[…]. Hi, I would need some help reading a crash trace[…].

Hello, after selecting the installed esp board[…]. Even more, "standard" there is no HTTP s[…]. I'd say the build of the Arduino IDE you're using […]. Thanks for you answer.

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I'm using Arduino for the[…].Through the ESP we will a user interface to send commands to the device to control outputs PIN or to visualize sensor readings.

A classic example is building an HTML interface so that a user can interact with remote peripherals, such as turning on or off a remote LED, or check the sensor readings temperature, humidity, pressure and so on. There are also other scenario where we need to implement a Web User interface to interact with the ESP Imagine for example we want to configure the device. Therefore we have to develop an HTML interface so that an user can interact with it.

In this case, the ESP should act as an access point so that we can use our smart phone. By the way, if you want to know more about IoT devices and smartphone integration you can read how to connect the ESP32 to a smartphone.

Firstly, it is necessary to build the HTML page. This is trivial, therefore we show the code and the result:. Once, we have developed the home page to the server when a client connects to the ESP Web server, the next step is implementing the method to turn the LED on.

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Before, we have defined:. Therefore, in this method, we turn the LED on. If you want to see the schematic, please refer to the diagram in the next paragraph.

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The code is:. To do it let us add the following code:. Now it is time to show the schematic used in this project to send commands to control LED and get the temperature, humidity, and pressure through the Web server running on ESP The schematic is shown below:. The image below shows the WiFi on the smartphone:. We showed how to use the Web server in two different ways:.

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How to connect ESP 8266 wifi modular with local area network?

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I am using an android smart device. The connection[…].

esp8266 threads

Hi, Probably a dumb question as the ESP was[…]. Halloween is coming up so I did a small project. From prior experience I would say that when saving[…]. Yes I'd also recommend an optocoupler, because sup[…].

Hi, I'm using this working library to extract H2[…].

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Thanks for the explanation. If you are in "[…]. Hi, I would need some help reading a crash trace[…].GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. If it does, please help to provide the working example code. Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.

I'm not entirely sure what you're asking. You could do timestamps by tracking time spent with millis and then running one or another function when a certain amount of time has passed, or you could use timers to set a flag when a certain amount of time has passed and just check whether the flag is true or flag in loop and run your functions accordingly -- the latter solution makes for cleaner code, even if there is no practical difference.

I guess you may be looking for a cooperative scheduler like this one prepared for Arduino sam and samd architectures. Below is the portion of the code relating to the question. This looks like the main issue here. Could you please post the minimal code sample which demonstrates the issue?

I have to say, I still don't understand your problem. Are your loop2 and loop3 terribly slow, then?

esp8266 threads

As for cooperative scheduling, the ESP Arduino code already has the coroutine functions, I wonder if they can be exposed somehow to the users. I would love to make use of them for some of my code instead of the state machines I need to code now. A coroutine approach is much more convenient and while it is not portable I don't really care that much about portability anyway in my project.

I have to submit the changes to Arduino esp to weak the definition of some functions. It is not stable, but for now it is working very well. Let me get back to this thread.

The typical Webserver example has two handles: one to put an LED on and a second to put it off. Instead of just putting the LED on, I would like to do something that lasts forever - unless I stop it intentionally.

However, the second routine blocks the webserver and clicking on the button at the html-page to trigger ledOff therefore does not show any result than waiting. The idea is that the loop lets the code "breathe", and the handlers just set indicator variables that can be tested in the main loop.

It will take the example Vicne above to the next level and allow you to get rid of delay completely. For most Arduinos delay is blocking, so nothing else happens while you wait.GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.

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This is a clone of the official Arduino core for the ESP, with some highly experimental cooperative multi-threading support. It will likely make fun of you while you try to figure out why it doesn't work. Multi-threading can make it easier to write and maintain code, by avoiding complex state machines. There are some libraries out there for simulating this, but they typically don't have separate stacks, or they don't address the issue with blocking calls in the ESP WiFi libraries.

Since I had some spare time, and the support basically was already there in the core, I made a crude attempt to expose it. This is a case of cooperative multi-threading, meaning each thread either need to exit its loop regularly, or call one of the yield or delay ms functions, to let the other threads run. All threads have the same priority and are scheduled in a round-robin fashion.

If a thread function exit it will be invoked again later, just like the regular loop function. There is no way to terminate threads. The stack for each new thread is allocated on the heap and is by default bytes.

See ESPScheduler. It's probably best if you keep your threads responsibilities completely separate. Since this is a modified version of the original core, you need to remove that one if you have it installed and then install this one instead. Don't expect any support on it though, especially not from the original authors.

esp8266 threads

This project brings support for ESP chip to the Arduino environment. It lets you write sketches using familiar Arduino functions and libraries, and run them directly on ESP, no external microcontroller required.

Starting with 1. PlatformIO is an open source ecosystem for IoT development with cross platform build system, library manager and full support for Espressif ESP development. Using make instead of the Arduino IDE makes it easier to do automated and production builds. If you find this forum useful, please consider supporting it with a donation.

Check out the list of issues which are easy to fix — easy issues for 2. Working on them is a great way to move the project forward. Larger changes rewriting parts of existing code from scratch, adding new functions to the core, adding new libraries should generally be discussed by opening an issue first. Feature branches with lots of small commits especially titled "oops", "fix typo", "forgot to add file", etc. At the same time, please refrain from putting multiple unrelated changes into a single pull request.

It is distributed under MIT license. It is distributed under BSD license. We use optional third-party analytics cookies to understand how you use GitHub.

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