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How do I use nrf52832 P0.05/AIN3 to measure temperature by DS18B20?

It's my mistakes. 1.I want to measure temperature from DS18B20,but I don't confirm the capable of the pin - P0.05.Because it's Analog ,but DS18B20 is Digital. 2.I set the P0.05 like thislink text.But I read value of 0 all the time.

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