settings: get default DPI if current DPI is returned as 0
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@ -493,6 +493,14 @@ class AdjustableDpi(_Setting):
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dpi_list = range(dpi_list[0], dpi_list[1] + 1, step)
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return cls(choices=_NamedInts.list(dpi_list), byte_count=3) if dpi_list else None
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def validate_read(self, reply_bytes): # special validator to use default DPI if needed
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reply_value = _bytes2int(reply_bytes[1:3])
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if reply_value == 0: # use default value instead
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reply_value = _bytes2int(reply_bytes[3:5])
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valid_value = self.choices[reply_value]
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assert valid_value is not None, '%s: failed to validate read value %02X' % (self.__class__.__name__, reply_value)
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return valid_value
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class SpeedChange(_Setting):
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"""Implements the ability to switch Sensitivity by clicking on the DPI_Change button."""
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