for my application, I need to connect a lot of Grove sensors, so the standard ports will probably not be sufficient.
In the post Having more Grove modules than connectors on the GrovePi I read that it should be possible to use the D0 port as additional digital port.
So, I tried to connect a Grove Temperature and Humidity Sensor Pro to the connector “SERIAL” and read the sensor values on pin 0.
[temp,humidity] = grovepi.dht(0, 1)
But this does not work.
My question is:
Do I need to change something on the GrovePi firmware to be able to use port D0?
Do I need to use a different pin number?
Or is it not possible to use the temperature and humidity sensor on this port as you need to write and read on the port to communicate with the sensor?
Thanks in advance for your help.