whithin this path: /sys/devices/platform/soc/*04000.i2c/i2c-1/1-0048/iio:device0/
you can find the different in_voltage#_raw to read out the different inputs; you just need to replace the * for whatever it is in your PI but it always ends with 04000.i2c
as an alternative, i could read out the first input vs ground with code from this link:
but before I had to remove the entry dtoverlay=ads1115 from the /boot/config.txt (or use the uninstall script).
now i do just need to figure out how to read out differentially two other inputs…
something seems to be broken with the device tree not properly building up… i guess this is a problem from the raspberry side?