Zero 3E Trying to enable RTC with rsetup

I am trying to setup pins 3 and 5 on the 40 pin header with rsetup to talk to a DS3223 RTC chip via I2C. The old howto is not relevant now.

rsetup allows

Enable I2C3-M0
Enable I2C4-M0

So some help needed, please. :slight_smile:
Need pins 3 and 5?

So I tried to setup pins 3 & 5 for I2c using rsetup and nothing happens!

I tried i2cdetect before and afterwards … no change at all!


Seems like “rselect” is faulty?
Just following the “howto” on the website which happily tells me that it is from another board altogether.