Memory leak using timers

[Colateral]

Hello,

LOPY 1.7.9.b3.
if you run the below code, you will see that after many loops it will raise "memory error". To reproduce in fastest way set SLEEP= 0.5. Same is with gc.enable().

import gc
import utime
from machine import Timer

class Object:

    def __init__(self, count=0):
        print ("Object INIT ", self)
        self._timer = Timer.Alarm(self._timerCallback, 0.5, periodic=False)

    def __del__(self):
        print ("Object DEL ", self)

    def _timerCallback(self, timer):    
        print("Timer finish " ,  self)
        self._timer.cancel()
        del self._timer
        self._timer = None
    
print("Start memory %s" %(gc.mem_free()))
SLEEP = 1.5
gc.disable()
while True:
    obj = Object(100)

    utime.sleep(SLEEP)
    gc.collect()
    print("\t\tmemory %s" %(gc.mem_free()))

[Colateral]

The issue was posted on github.

[jmarcelino]

@Colateral
The most effective place to post bug reports is at https://github.com/pycom/pycom-micropython-sigfox/issues

The forum is mostly to discuss such bugs, since there's no issue tracking.