MicroPython Forum (Archive)

pythoncoder

Your senddata routine instantiates a socket. If an exception occurs after that point the socket is not closed. This can occur if you get a WiFi outage. It is worth ensuring that sockets are always closed as they use RAM. The reliability of ESP8266 devices depends also on the quality of the device an...

pythoncoder

Is this any use?

Code: Select all

settings_dict = {"param": 1, "bar":99}  # loaded from JSON

class Foo:
    def __init__(self):
        for k in settings_dict.keys():
            setattr(self, k, settings_dict[k])

foo = Foo()
foo.param
foo.bar

pythoncoder

The battery backed RAM is 4KiB of contiguous space. You'll find some tips on accessing it here.

pythoncoder

I can't see anything obviously wrong with your code. It would help if you could post the details of your REPL session from a soft reboot to your error so we can see exactly how it occurs. In general MicroPython handles args and self exactly as per CPython.

pythoncoder

Re GC in my experience (mainly on Pyboard and ESP8266) GC time is radically reduced if you issue

Code: Select all

gc.collect()

explicitly at regular intervals. Ideally you do this at times when your code can tolerate a pause of a few ms.

Good to hear of a successful application for the fast_io fork

pythoncoder

There is no question that hardware quality is very variable, both ESP8266 modules and USB power supplies. I have a USB PSU which works fine for charging phones. It even works for a couple of days running an ESP8266. Then it generates a burst of about 1000 power spikes before resuming normal operatio...

pythoncoder

The standard way to deal with real time events in Python is to use asyncio, Python's cooperative scheduler. The MicroPython version is uasyncio. There is a tutorial on its use here.

pythoncoder

You might like to look at nano-gui which supports these displays. Fonts are created as Python source files uding font-to-py . This supports multi-lingual fonts and converts industry standard font files to Python source. The Python files are designed so that, if they are frozen as bytecode, their RAM...

pythoncoder

I'm running a test with three ESP8266 devices connected to a server. Each communicates in both directions every five seconds. Code is designed according to the principles in this doc . This test runs 24/7. I have accumulated some 1500 device hours of running with only one crash. This may have had an...

pythoncoder

@Johnny010 There are optimisations you can make. I suggest you read this doc.

MicroPython Forum (Archive)

Search found 5956 matches

Re: ESP8266 Code crashes after ~30 hours

Re: namedtuple to JSON possible?

Re: Save data on power down

Re: "Function takes 0 positional arguments" - but it should take self

Re: optimizing uasyncio performance

Cheap hardware

Re: wifi interupt

Re: ssd1331 Multi-Language Font

They should never crash.

Re: Memmory Allocation Error although plenty of RAM left...