Domoticz

Hi,

I'm trying to setup input/outputs port using mcp23017 expander connected to i2c port in my Raspberry Pi (http://www.raspberrypi-spy.co.uk/2013/0 ... pi-part-1/).
Firstly I'd like to explain what I have done now. I've been installed WiringPi and i'm able to export GPIO pins on RPI and of course I can configure switches which are directly on RPI board.
But... there is also an option to expand gpio ports using mcp23017 expander (http://wiringpi.com/the-gpio-utility/i2 ... xtensions/), and also I'm able to control inputs/outputs pins using command line. And the main goal here is to configure switches/lights buttons inside the domoticz to control mcp23017 in/out pins. It allows to expand inputs/outputs up to 128 inputs/outputs (It's possible to connect up to 8 devices to i2c bus and each device can support 16 lines).
Have anybody done domoticz configuration to manage mcp23017 in/outs?

I would be grateful for any help!!
Thank you in advance.

Is it even possible? Maybe I'd like to go throw the way which is currently impossible to be covered by domoticz software?

The goal I want to achieve to have at least 32 (preferable 48 digital outputs), and at least 16 inputs. Every circuits are done by wires inside the walls.

Any sugestions?

Ok, It seems I solved this problem using Dummy Virtual Devices and updating them by JSON and lua scripts and execute commands using script:/ function.
In a while I could present the way and solution if anybody is interested.

For sure the huge goal of this solution is possibility to connect up to 8 mcp23017 devices (each equipped 16 i/o ports) so in fact we can manage up to 128 i/o devices using just 2 communication wires (i2c bus) and it is low cost and stable solution.

Thank you.

hi
if you have a tutorial to explain how you did it
thank you

Hi,

I'm do not, but when I find a while I will describe the way.

Any update ? I have 2x MCPs ready to be installed.

Cheers

Hi SMQ,

Although it is some time ago since you wrote your message, i am very interesseted in your solution to control the MCP23017.
I hope you can help me with your "tutorial"

Regards,

Ronald.

new ideas ?
I fight with this a few days (

Instead mcp23017 I want to use mcp23s17 which is used in PiFace, however, is limited to 4 in domoticz, and the raspberry pi can address their 8 and an additional 8 to spi1, which gives 128 + 128 = 256 inputs / outputs. if someone tried to modify PiFace.cpp domoticz to detect them more than 4 Piface?

Hi,

does anybody have any tutorial or samples how to manage outputs of one or more MCP23017 with domoticz?

Thanks!

http://kiler.blog.pl/2017/03/14/raspber ... -mcp23017/

just added few words about it

try this https://www.domoticz.com/forum/viewtopi ... 32&t=27447

For output i use inside Domoiticz

On;

script:///usr/local/bin/gpio -x mcp230170x24 mode 110 out ; /usr/local/bin/gpio -x mcp230170x24 write 110 0

Off;

script:///usr/local/bin/gpio -x mcp230170x24 mode 110 out ; /usr/local/bin/gpio -x mcp230170x24 write 110 1