BeanieBots
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I am trying to use a DS18B20 sensor on a 28X2 pin A.3 (firmware B.3) without success.
The sensor works fine when connected to any C or B port pins.
Pin A.3 toggles fine if using high/low commands.
I've even tried setting A.3 high initially but all I get from the sensor is a value of zero.
Is owin/out supported on pin A.3? Nothing in the manual suggests otherwise.
(yes, there is a 4k7 pullup on A.3)
EDIT:
Problem solved. Working fine on A.3 now.
Issue was my hardware. That pin is diode or'd with several others and I had the DS18B20 wired the wrong side of the diode which of course will not work for bi-directional comms. Sorry for wasting everybody's time.
The sensor works fine when connected to any C or B port pins.
Pin A.3 toggles fine if using high/low commands.
I've even tried setting A.3 high initially but all I get from the sensor is a value of zero.
Is owin/out supported on pin A.3? Nothing in the manual suggests otherwise.
(yes, there is a 4k7 pullup on A.3)
EDIT:
Problem solved. Working fine on A.3 now.
Issue was my hardware. That pin is diode or'd with several others and I had the DS18B20 wired the wrong side of the diode which of course will not work for bi-directional comms. Sorry for wasting everybody's time.
Last edited: