MicroPython Forum (Archive)

Yes, max value for getrandbits() is 32.

I have try to add gc.collect() before calculation, it will decrease the increase time slightly.

It appears to be caused by the print function, this problem only appear on PICO.

Yes, it really works, the calculation time of PI is reduced by almost half. import gc from utime import ticks_ms, ticks_diff def pi(places=100): # 3 + 3*(1/24) + 3*(1/24)*(9/80) + 3*(1/24)*(9/80)*(25/168) # The numerators 1, 9, 25, ... are given by (2x + 1) ^ 2 # The denominators 24, 80, 168 are giv...

calc time: 3526 ms
calc time: 3573 ms
calc time: 3627 ms
calc time: 3666 ms
calc time: 3719 ms
calc time: 3758 ms
calc time: 3812 ms
calc time: 3852 ms

It works in PICO, but I have found a strange behavior in PICO, the calculation time increases each time, tens to hundreds of milliseconds each time. There is no such phenomenon on other hardware (such as pyboard, esp32, microbit).

Is this a bug in PICO firmware?

I have modify [*]examples/mandel.py[*] for performance testing. from time import ticks_ms, ticks_diff MAX_ITER = 60 MANDEL_CHAR = ( ' ', '.', '`', ',', ':', ';', '|', 'o', '<', '>', '(', ')', '{', '}', '+', '~', '=', '-', '#', '@' ) def run(func, param = None): t1 = ticks_ms() if param == None: func...

help('modules')

It's not difficult, just try more, and more discussion.

You can refer to my micropython library:

https://github.com/micropython-Chinese- ... ty/mpy-lib

You may use onboard stlink to flash hex/bin format firmware.