37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
import storage
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import board
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import digitalio
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# --- Configuration ---
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# Set up the two pins we want to check
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pin16 = digitalio.DigitalInOut(board.IO16)
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pin16.direction = digitalio.Direction.INPUT
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pin16.pull = digitalio.Pull.UP
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pin17 = digitalio.DigitalInOut(board.IO17)
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pin17.direction = digitalio.Direction.INPUT
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pin17.pull = digitalio.Pull.UP
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# --- Logic ---
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# By default, the pull-up resistors hold the pins HIGH (True).
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# If we short a pin to GND, its value will become LOW (False).
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# We check if BOTH pins are HIGH.
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# If they are, it's a "normal boot," so we hide the drive.
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if pin16.value and pin17.value:
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print("Normal boot: Disabling CIRCUITPY drive.")
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storage.disable_usb_drive()
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else:
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# One of the pins was LOW (grounded), so we
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# enable the drive for maintenance.
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print("Storage boot: CIRCUITPY drive is ENABLED.")
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# We don't need to call storage.enable_usb_drive()
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# because it's enabled by default.
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# Clean up the pins so they can be used in code.py if needed
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pin16.deinit()
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pin17.deinit()
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# The boot.py file finishes, and CircuitPython will
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# either mount the drive or not, based on what we did.
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# After this, code.py will run. |