Reversing GPIO HIGH LOW

blase116 · May 23, 2019, 3:10am

Pretty new to Hestiapi and OpenHab for that matter. I think this issue may reside in OpenHab, but I am pretty new there too.

I sourced my own parts and put it together ( I didn’t want to wait until the end of the year :P) Everything is working fine, however my switches are backwards (On = off and off = on) and I am pretty sure it has to do with the SSRs I have. Should be a simple fix of reversing the GPIO high/low, but I do not know where to do that. In the bindings somewhere? I will continue to dig, but any insight would be much appreciated.

Thanks

HestiaPi · May 23, 2019, 4:36am

I really don’t recommend that change. If Pi freezes or reboots and never comes back (corrupted SD) your heating will stay on forever! Please consider sourcing the right components.

blase116 · May 23, 2019, 5:08pm

Makes total sense, but in the interest of my own troubleshooting in the interim, can I get this location?

blase116 · May 23, 2019, 7:30pm

Oh and to put everyone’s mind at ease, I sourced the proper high level trigger relays today

HestiaPi · May 23, 2019, 9:34pm

It seems you can change the items file:

github.com

HestiaPi/hestia-touch-openhab/blob/master/etc/openhab2/items/default.items

Group charts
Group chart_temp
Group chart_humi
Group chart_press

Switch HotWaterPin12 "Hot Water" { gpio="pin:12", mqtt=">[mosquitto:hestia/local/cmnd/hotwaterstate/POWER:command:*:default],<[mosquitto:hestia/local/hotwaterstate:state:MAP(binary.map)]" }
Switch HeatingPin23 "Heating" { gpio="pin:23", mqtt=">[mosquitto:hestia/local/heatingstate:command:ON:1],>[mosquitto:hestia/local/heatingstate:command:OFF:0],<[mosquitto:hestia/local/heatingstate:state:MAP(binary.map)]" }
Switch HumidityPin18 "Humidity" { gpio="pin:18", mqtt=">[mosquitto:hestia/local/cmnd/humiditystate/POWER:command:*:default]" }

String MyTemp "Temperature" <temperature> { channel="exec:command:gettemp:output" }
Number MyTempProxy "Temperature [%.1f °C]" <temperature> { mqtt=">[mosquitto:hestia/local/temperature:state:*:default]" }

String MyHumi "Humidity" <humidity> { channel="exec:command:gethumi:output" }
Number MyHumiProxy "Humidity [%.0f %%]" <humidity> { mqtt=">[mosquitto:hestia/local/humidity:state:*:default]" }

String MyPressure "Pressure" <pressure> { channel="exec:command:getpress:output" }
Number MyPressureProxy "Pressure [%.2f hPa]" { mqtt=">[mosquitto:hestia/local/pressure:state:*:default]" }

Number TempSetpoint "Temperature Setpoint[%.1f °C]" { mqtt=">[mosquitto:hestia/local/tempsetpoint:state:*:default],<[mosquitto:hestia/local/settempsetpoint:state:default]"}
Number TempSetpointChart "Heating Setpoint" (charts, chart_temp)

This file has been truncated. show original

like this:
sudo nano /etc/openhab2/items/default.items

and play with this flag:

[activelow:yes|no]

See full documentation here.

Please report here if you make it but re-include my warning as people tend to skim to the answer and copy-paste and run!

HestiaPi · January 22, 2020, 4:43pm