ValueError: incompatible .mpy file

My Pico requires the following mpy values:
mpy version: 6
mpy sub-version: 2
mpy flags: -march=armv6m

Checking the first two bytes of the file give version 6 and sub-version 6.
Is there a way to correct this please?

Thank you for the information, Paulo!

I had a few errors compiling the factfib.c, where are the fixes:

// missing the ” in the end.
#include “py/dynruntime.h”

// convert the return value to mp_obj_t
STATIC mp_obj_t factorial(mp_obj_t x_obj) {
mp_int_t x = mp_obj_get_int(x_obj);
mp_int_t rslt = factorial_helper(x);
return mp_obj_new_int(rslt);
}

Did you eventually get it to work?

– I followed the instructions above, got micropython, modified the makefile as described
– I do make (but I get a factfib.native.mpy file instead of factfib.mpy)
– I copy the factfib.native.mpy file to the pico as factfib.mpy
(I tried rshell but I got a “timed out or error in transfer to remote: b””, but I could copy it over using Thonny)
– I can import the module (in thonny or rshell – the same) without errors
– I try and run the “ff.fibonacci(5)” but then I get:

“Traceback (most recent call last):
File “”, line 1, in
AttributeError: ‘module’ object has no attribute ‘fibonacci'”

What do I do wrong?

Thank you for your feedback 🙂

STATIC mp_obj_t factorial(mp_obj_t x_obj) {
mp_int_t x = mp_obj_get_int(x_obj);
mp_int_t rslt = factorial_helper(x);
return mp_obj_new_int(rslt);
}