Dummy device Barometer

[Ctenberge]

hello, I have installed the BMP388 on a Raspberry Pi and send its measurements to another with Domoticz using Curl.
The problem is this: the values are send properly, I get the "OK" messages on both temperature and pressure on the commandline.
But the dummy device Barometer in Weather on Domoticz goes blanc where the true value in setup/devices shows the proper value (1025.9)
How is this possible?

[waltervl]

So you have a combined Temp/baro device and update it with https://www.domoticz.com/wiki/Domoticz_ ... Fbarometer

Perhaps try sending baro pressure as an integer (eg 1026), I believe this is a known issue (but not documented yet)

[Ctenberge]

You gave me an idea so I created a dummy device for the combination temperature/pressure. I changed the Curl in that combination and fired the command. Same result, but by now the temperature went also blanc.
Looking in the device section I saw this:
78 Dummy 1409E 1 BMP388 Temp + Baro BMP085 I2C 1026, 22.52
both readings are present but not in the temperature or weather tabs.

[FireWizard]

Hello @Ctenberge,

Hmm, I would say; "Here again".

This is a similar problem as discussed at: viewtopic.php?f=4&t=36885&p=278910#p278910

If you look this time to https://www.domoticz.com/wiki/Domoticz_ ... .2Fsensors

Code: Select all

/json.htm?type=command&param=udevice&idx=IDX&nvalue=0&svalue=TEMP;BAR;BAR_FOR;ALTITUDE

For a virtual Temperature/Barometer sensor you have 4 parameters and not 2.
These parameter are separated by a semicolon.
So you should fire:

Code: Select all

http://your.ip.address:8080/json.htm?type=command&param=udevice&idx=1234&nvalue=0&svalue="22.52;1026;0;0"

Replace the IDX number, 1234, with the IDX number of your virtual sensor.

Let us know

Regards

[Ctenberge]

I did. This is the result:
{
"status" : "OK",
"title" : "Update Device"
}
./BMP388.sh: line 26: 1026: command not found
./BMP388.sh: line 26: 0: command not found
./BMP388.sh: line 26: 0: command not found
I went to change the both zero's in "22.52;0;1026;0" and got a similar effect
also in "0;22.52;0;1026" with disapointing results
The status "OK" gets no result in the devices tab or Weather tab.

[waltervl]

Can you give the complete url you are sending?

[Ctenberge]

I can, but your information about adding a zero as a second parameter works, but in another way.
As the values temperature and pressure are separated from each other, so are the url's.
I had it with two curl commands and tried it combined, wich did not work as demonstrated before.
So back to the two commands I added the zero after the variable and it works now. This is how it turned out:
curl "http://mynetwork:8080/json.htm?type=com ... PERATURE;0"
curl "http://mynetwork:8080/json.htm?type=com ... ue=$DRUK;0"

Thanks for setting me on the right track

[waltervl]

For the next time I would advice you to really read the Wiki Page about Domoticz API URL's
Temperature should be .....&svalue=$TEMP
Barometer should be .....&svalue=$DRUK;0 (or 1,2,3)

So you have to add the 0 (or another number) for the barometer prediction.
For the Temp no trailing 0 needed.

[FireWizard]

Hi,

@waltervl

I tested it, but it seems that the wiki is not completely correct.

If I send the combined command, as shown above, it does not update the temperature, while it updates the pressure and the trailing 0 results in prediction "stable".
So it looks the combined command does not work, as expected.

Regards

[waltervl]

Hi,

@waltervl

I tested it, but it seems that the wiki is not completely correct.

If I send the combined command, as shown above, it does not update the temperature, while it updates the pressure and the trailing 0 results in prediction "stable".
So it looks the combined command does not work, as expected.

Regards

On what device, a combined temp/baro device or 2 separate devices as @Ctenberge is having now?

[FireWizard]

@waltervl,

No it is the combined device.and also@Ctenberge reported it as not working.

For that reason, he probably moved to 2 separated devices.
It looks that the data is handled by Domoticz as if, it was a Barometer device only.
I have to test further, also with other combined sensors.

I rarely use http to send data to Domoticz, as I prefer MQTT.

Can you test as well?

Regards

[waltervl]

I tested it. It works also on a combined device.
Do not use quotes: svalue=22.1;1026;0;0 is working, svalue="22.1;1026;0;0" gives a 0 temperature but a valid baro pressure....

Code: Select all

http://192.XXX.XXX.XXX:8080/json.htm?type=command&param=udevice&idx=364&nvalue=0&svalue=22.1;1026;0;0

Edit: non integers also work eg svalue=22.12;1026.15;0;0

[FireWizard]

Hi, @waltervl,

It has been a mistake from my side. I did not check the Wiki carefully, as I automatically used the same syntax as with MQTT.
I do confirm your observations. Without the quotes, it functions as intended. With the quotes the Temperature stays 0, but the pressure and prediction is okay. Funny. For the values, you can use 2 digits after the decimal point.

Now the Wiki:

For Temperature/barometer it is stated that:

Barometer forecast can be one of:
0 = No Info
1 = Sunny
2 = Paryly Cloudy // Note the typo
3 = Cloudy
4 = Rain

This is not correct, I tested it with the latest beta and found:

0 = Stable
1 = Sunny
2 = Cloudy
3 = Unstable
4 = Thunderstorm
5 = Unknown
6 = Cloudy/Rain
=> 7 = Unknown

The 4th 0 (intended for altitude) is not needed and may be omitted.

If you test as well and can confirm my findings, we should correct the Wiki.

I will test also the other sensors, but not today.

Regards

[waltervl]

Thanks for further testing. I will check too and update the wiki. But also not today

[waltervl]

I did some source code investigation:
For dummy devices the list is

0 { bmpbaroforecast_stable, "Stable" },
1 { bmpbaroforecast_sunny, "Sunny" },
2 { bmpbaroforecast_cloudy, "Cloudy" },
3 { bmpbaroforecast_unstable, "Unstable" },
4 { bmpbaroforecast_thunderstorm, "Thunderstorm" },
5 { bmpbaroforecast_unknown, "Unknown" },
6 { bmpbaroforecast_rain, "Cloudy/Rain" },

For other baro devices in native integrations, like in buienradar the list is different....
0 { wsbaroforecast_heavy_snow, "Heavy Snow" },
1 { wsbaroforecast_snow, "Snow" },
2 { wsbaroforecast_heavy_rain, "Heavy Rain" },
3 { wsbaroforecast_rain, "Rain" },
4 { wsbaroforecast_cloudy, "Cloudy" },
5 { wsbaroforecast_some_clouds, "Some Clouds" },
6 { wsbaroforecast_sunny, "Sunny" },
7 { wsbaroforecast_unknown, "Unknown" },
8 { wsbaroforecast_unstable, "Unstable" },
9 { wsbaroforecast_stable, "Stable" },