Crash into the HardFault_Handler

[iraytrace]

Got a hard crash
bug.zip

[dhalbert]

The BOOT_OUT.TXT file in the zip file says it's beta 7. Could you upgrade to 4.0.1 and try again?

[tannewt]

@iraytrace any update on this?

[DavePutz]

Running some diagnostics this looks like a crash due to memory fragmentation. I believe this is due
to having 'import' statements scattered throughout the code. If all imports are placed at the top of the Python script things seem to run OK. i.e.:

import board
import digitalio
import time
from adafruit_debouncer import *
import neopixel
import os
from DiscJockey import *
import pulseio

In addition to helping memory management, this is just good Python programming practice. As Python PEP08 states:

Imports are always put at the top of the file, just after any module comments and docstrings, and before module globals and constants.

[kevinjwalters]

I'm not disagreeing with (non conditional) imports at the top but shouldn't running out of memory give a MemoryError exception?

[DavePutz]

Sorry - I should have made my comment clearer. MemoryError exceptions are what I was seeing when I was doing the requested testing using the 4.0.1 release. I did not test with the beta version the issue was reported on. The error occurs at line 96, which is the DiskJockey import statement.

[dhalbert]

Closing due to age of versions that showed an error.