MicroPython Forum (Archive)

The receiving pyboard is not connected to a PC. The filesystem is only updated from code. Maybe this could help to clarify. import machine with open('main.py', 'w') as f: f.write('print("hello world")') while flash.active(): pass machine.reset() I'd like to know if there's a function or method like ...

Thanks for the response. Could you elaborate what these precautions are? Using rshell is not an option for me. I'm sending filecontents from one pyboard to another. Then the receiving pyboard writes the filecontents to flash. At this point I'd like to know when the flash write was completed and the ...

Hi everyone,

A lot of times resetting too early corrupts the filesystem.

I know the red LED indicates when the flash is being written to, but is there a way to check for this in software?

That makes sense. Thank you

Oh, I see. So this is perfectly normal since b is not available at compile time? # test.py from micropython import const b = const(1) # main.py from micropython import const from test import b a = const(1) c = const(a + 1) # works d = const(b + 1) # SyntaxError: constant must be an integer I'm still...

This seems like a bug to me: MicroPython v1.9.4-740-gdc23978dd on 2018-12-10; PYBv1.1 with STM32F405RG Type "help()" for more information. >>> from micropython import const >>> a = const(1) >>> b = const(int(1)) Traceback (most recent call last): File "<stdin>", line 1 SyntaxError: constant must be ...

Yes! That works.
Thank you very much!

Hello everyone. I've been trying to find a good way to serialize objects, but there's always something missing in the micropython implementation. My goal is a Setting class where: - I can access parameters by name (not key lookup) - I can serialize the parameters to JSON Something that can do: objec...

The responses on the issue explain the behavior.
You can't use the console with the heap locked, and heap_unlock without a previous lock "fails".

Thanks everyone!

New account, so no code tags, sorry When I run this code I get a MemmoryError: memory allocation failed, heap is locked import micropython micropython.alloc_emergency_exception_buf(100) micropython.heap_lock() micropython.heap_unlock() Running this also locks the heap: import micropython micropython...