MicroPython Forum (Archive)

my python control loop code runs 30ms, it's getting slower with the time, my C control loop runs 10ms. The balance control loop needs max. 10ms.

i've built my self balancing robot and trying to port the c code into micropython. Unfortunately micropython is too slow on STM32F407 Board.
Is there any better µcontroller which is for micropython optimized.

https://www.youtube.com/watch?v=jPH4uLOQLpM

You should read this: http://docs.micropython.org/en/latest/pyboard/reference/isr_rules.html?highlight=interrupt You're not allowed to allocate memory inside an interrupt handler (and timer callbacks are interrupt handlers). The for loop is trying to allocate an iterator object. If you rewrite it l...

Yep - see an example here (that also uses classes): https://github.com/dhylands/upy-examples/blob/master/heartbeat_irq.py thanks. now i get a another error message MemoryError: memory allocation failed, heap is locked micropython runs on a STM32F407 Discovery Board MicroPython v1.8.3-26-ga56a683 on...

Hello, i'm trying to toggle the leds every 1 second. i get the this error message uncaught exception in Timer(2) interrupt handler TypeError: function takes 1 positional arguments but 2 were given import pyb import micropython micropython.alloc_emergency_exception_buf(200) class A: def __init__(self...

i would calculate the time of operation. Is there any function like %timeit ?

pfalcon wrote:Sorry, none of the __r*__ methods are supported.

Okay Thanks!

i'm trying to test the overload operator __rmul__ on micropython, Unfortunately it does not work on micropython class foo: def __init__(self, data): self.data = data def __mul__(self, other): if type(other) in (int, float): return foo(self.data * other) else: return foo(self.data * other.data) def _...

dhylands wrote:I don't understand the difference between your working and non-working scenarios. Were they both flashed the same way?

Yes they were both flashed same way,

recent built of micropython did not work as always, then converted again same firmware.elf to prog.bin. After flashing, ctrl+c does work. I'm confused, Is it something wrong with objcopy? arm-none-eabi-objcopy -O binary firmware.elf prog.bin st-flash write prog.bin 0x8000000 Screen Shot 2016-08-16 a...