27 lines
663 B
Python
27 lines
663 B
Python
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# Test executing Python code while IRQs disabled.
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try:
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from machine import disable_irq, enable_irq
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from time import ticks_us
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except ImportError:
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print("SKIP")
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raise SystemExit
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# Structured to also nest disable_irq() calls
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def f(n):
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st_irq = disable_irq()
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if n:
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f(n - 1)
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else:
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# busy-wait in a tight loop for 1ms, to simulate doing some work in a critical section
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# (can't wait for time_us() to increment as not all ports will "tick" with interrupts off.)
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for _ in range(100):
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ticks_us()
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enable_irq(st_irq)
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for nest in range(3):
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print(nest)
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for _ in range(5):
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f(nest)
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