Niclas Westerlund asked 3 years ago
Hi,
I have tried the MicroPython ESP Web Server, but it seems to get stuck already with one client.
For ESP8266/Arduino there seems to be a much better async web server, but nothing for ESP8266/Microphyton?
(What I want to do is a model-lighthouse server, with ability to set light-characteristics from a simple webpage, but I can’t get the code blink the LED at the same time as handling the webserver, and only one client, I need something more powerful)
Thsi is the tutorial I’m following:
https://randomnerdtutorials.com/esp32-esp8266-micropython-web-server/
Any suggestions?
Kind regards
Niclas
Sara Santos Staff answered 3 years ago
Hi.
What do you mean that the web server gets stuck?
For “multitasking”, you may want to take a look at this (I haven’t tried it):
- https://docs.micropython.org/en/v1.15/library/uasyncio.html
- https://forum.micropython.org/viewtopic.php?t=4067
Have you taken a look at picoweb?:
- https://techtutorialsx.com/2017/09/01/esp32-micropython-http-webserver-with-picoweb/
I haven’t tried it, but it is an alternative way to build web servers with micropython.
Regards,
Sara
Niclas Westerlund answered 3 years ago
Hi,
Since english not is my native language, I maybe not that clear, but I’ll give it another try.
What I mean is that following your tutorial (which normally is a very good path to get started) I can get the ESP8266 presenting a web-page, with a choice of LED on/off, which I extended to a four-button panel. So far everything works, but as soon as I try to get the LED blinking instead it seems like the webserver takes all resources. Switching a LED on and off is done in microseconds but to get the LED blinking a special sequence seems not doable, since the webserver appears to be single threaded and blocks the processor from doing other stuff.
What I think I need is a multithreaded and/or asynchronos webserver which let me handle more than one client and do other things in the background. This seems however much more complicated so I just wondered if you, or someone in the forum, has experience with a little more powerful, but still easy to use, webserver for micropython on ESP8266.
I’ll check your suggestions, but maybe someone have more ideas?
Kind regards
Niclas
Sara Santos Staff answered 3 years ago
Hi.
Thanks for clarifying. It is clear now.
To have multithreaded you need to use the async scheduler methods: https://docs.micropython.org/en/v1.15/library/uasyncio.html
You can create different tasks that run on their own time. Unfortunately, I’m not familiar with those micropython methods. But, that’s where you should start searching.
Regards,
Sara