MicroPython Forum (Archive)

Hi, Unfortunately I have 2 more problems with Micropython. The first one is that, for some reason, my app crashes when I call a recursive function with too much depth. For example, this simple recursive function: def r(n): if n == 0: return 0 else: return 1+r(n-1) Calling up to r(63) works fine, but...

I would like to allow the user to get out of an infinite loop. At the moment this is impossible: as MPy is not waiting for a key, all keys are ignored, and the only way to interrupt the loop is by pressing the hardware reset button. I could put a timer that listens separately for the [EXIT] key and ...

... old IEEE754 floats. - How does Micropython avoid these kinds of double precision issues? - Is there an operation where a BCD system (used by TI/casio calculators) would return a different answer from Micropython?

Found the solution thanks to https://github.com/adafruit/circuitpython/issues/130

In the makefile, replace "none" with "mpz":

It comes from build/_frozen_mpy.c:
Apparently MPy believes that any implementation of long int is incompatible. Why is that? I looked inside mpz.c and 32-bit seems to be supported.

The MICROPY_LONGINT_IMPL_MPZ is what you want. MPZ implement arbitrary precision integers. You can find the support files in the py directory: https://github.com/micropython/micropython/blob/master/py/mpz.h https://github.com/micropython/micropython/blob/master/py/mpz.c I'm not sure where the incomp...

... found these long-int implementations: - MICROPY_LONGINT_IMPL_NONE (int is limited to 2^31 bits) - MICROPY_LONGINT_IMPL_LONGLONG (can't use it as Casio doesn't have 64-bit, and no long long) - MICROPY_LONGINT_IMPL_MPZ (no idea what it is, throws a preprocessor error "incompatible MICROPY_LONGINT_IMPL") ...

As 2064 is very close to a power of 2, I think there is a hardcoded limit somewhere. I don't think there is a coincidence because 2 kb is quite low I knew it, there is indeed a hardcoded limit (in main.c, hiding in plain sight): static char heap[2048]; Changing the size of the heap works, but in my...

http://edu.casio.com/products/graphic/fxcg50/#Python "Python mode supports a version of MicroPython Version 1.9.4, which has been adapted to run on this calculator. Please note that MicroPython is different from the Python that ...

Micropython is a work in progress.


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