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Orange Pi Zero I2C1 pullup

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Post time 2019-2-1 10:15:12 | Show all posts |Read mode
On Orange Pi Zero, there are two pull-up resistor, R153, R154. Why is it used the external pull-up resistors? If we use internal pull-up, we may use these ports for multiple purpose.

I want to use this port for controlling relay. After boot-up, this value is high so activated my relay.
Can I configure it down maually on boot stage?
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