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# test micropython.schedule() function
import micropython
try:
micropython.schedule
except AttributeError:
print('SKIP')
raise SystemExit
# Basic test of scheduling a function.
def callback(arg):
global done
print(arg)
done = True
done = False
micropython.schedule(callback, 1)
while not done:
pass
# Test that callbacks can be scheduled from within a callback, but
# that they don't execute until the outer callback is finished.
def callback_inner(arg):
global done
print('inner')
done += 1
def callback_outer(arg):
global done
micropython.schedule(callback_inner, 0)
# need a loop so that the VM can check for pending events
for i in range(2):
pass
print('outer')
done += 1
done = 0
micropython.schedule(callback_outer, 0)
while done != 2:
pass
# Test that scheduling too many callbacks leads to an exception. To do this we
# must schedule from within a callback to guarantee that the scheduler is locked.
def callback(arg):
global done
try:
for i in range(100):
micropython.schedule(lambda x:x, None)
except RuntimeError:
print('RuntimeError')
done = True
done = False
micropython.schedule(callback, None)
while not done:
pass
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