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fixes problem with initialization in io_expander ch422g.py #516

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fixes problem with initialization in io_expander ch422g.py #516

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5 changes: 2 additions & 3 deletions api_drivers/common_api_drivers/io_expander/ch422g.py
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Original file line number Diff line number Diff line change
Expand Up @@ -33,9 +33,8 @@ class Pin(io_expander_framework.Pin):

@classmethod
def set_device(cls, device):
if cls._device is not None:
raise ValueError('device has already been set')

io_expander_framework.Pin.set_device(device)

cls._device = device

cls._reg_in = i2c.I2C.Device(
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