I have the same problem.

Power LED is blinking.

pi@revpi:~ $ piTest -d
Found 2 devices:

Address: 0 module type: 95 (0x5f) RevPi Core V1.2
Module is present
input offset: 113 length: 6
output offset: 119 length: 5

Address: 31 module type: 32864 (0x8060) RevPi DIO V0.0
Module is NOT present ...

What I want to achieve is:

The state of all configured inputs should be published to MQTT every 15 seconds.
Any state change of an input should be published immediatly.
Thre should be a topic that allows me to control the outputs.

I do not want to run additional logic.
Just forward the inputs to ...