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https://github.com/pimoroni/grow-python
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85db231475
Forces only one pump to be active at a time, to avoid the sudden inrush current browning out the Pi or causing weirdness when multiple pumps fire and drop the voltage.
38 lines
1.0 KiB
Python
38 lines
1.0 KiB
Python
import time
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def test_pumps_are_mutually_exclusive(GPIO, smbus):
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from grow.pump import Pump, global_lock
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ch1 = Pump(channel=1)
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ch2 = Pump(channel=2)
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ch3 = Pump(channel=3)
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ch1.dose(speed=0.5, timeout=1.0, blocking=False)
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assert global_lock.locked() is True
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assert ch2.dose(speed=0.5) is False
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assert ch2.dose(speed=0.5, blocking=False) is False
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assert ch3.dose(speed=0.5) is False
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assert ch3.dose(speed=0.5, blocking=False) is False
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def test_pumps_run_sequentially(GPIO, smbus):
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from grow.pump import Pump, global_lock
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ch1 = Pump(channel=1)
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ch2 = Pump(channel=2)
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ch3 = Pump(channel=3)
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assert ch1.dose(speed=0.5, timeout=0.1, blocking=False) is True
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assert global_lock.locked() is True
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time.sleep(0.3)
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assert ch2.dose(speed=0.5, timeout=0.1, blocking=False) is True
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assert global_lock.locked() is True
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time.sleep(0.3)
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assert ch3.dose(speed=0.5, timeout=0.1, blocking=False) is True
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assert global_lock.locked() is True
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time.sleep(0.3)
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