Mcp23017

Add-ons Bindings
1

Hello.

I have a little problem.
I need to work on expander mcp23017 via Openhab 1.8.3.
I downloaded latest version of mcp23017 binding (v1.10.0) and it doesn’t work…
I don’t know how to fix it… all gpio pins work on Openhab but that expander still not.
I’ve installed wiringPi and PI4J on my Raspberry Pi 3 B , i’ve made an item in items file and still expander didn’t answer… I realy don’t know what to do…

There is my question. Is there any way to look that binding is running? Need I something else to install?
Or mayby some others add-ons are needed to run this binding correctly?

2

Hi,
i’ve some questions:

  1. Is I2C bus support activated on Raspberry?
  2. What output produce “y2cdetect -y 1”?
  3. What happen if you run MCP23017GpioExample from Pi4J library?
    Attention: The example opens MCP23017 on address 21 and not on 20.
  4. What says openhab.log? Is binding load or not?
3
  1. yes
  2. that my expander is on address 0x20
  3. nothing about it.

I downloaded earlier version of that binding and everything work.

4

Cool :slight_smile: