thank you
Oh, I forgot - two strings for that
postUpdate("invttot", data1)
Nope, still same warning. Is there any other way to convert string to number?
In a rule I’ll use below
mode = int(str(event.itemState))
thanks, can you share full example? I am not sure how can I apply this to my rule.
Only thing I can think of, you’ve got some invisible control characters in your strings.
Try
postUpdate("invttot", "3.142")
to prove stuff works.
Try
logInfo("test", "Chars " + data1.length)
for character count.
Sure, it’s called ‘parsing’.
To clarify, are you using RulesDSL or Jython/Python?
Below works without errors
postUpdate("invttot", "3.142")
Length of data1 is
2021-12-10 05:17:01.126 [INFO ] [org.openhab.core.model.script.test ] - Chars 8
String is separated by line breaks
logInfo("test", invtstring.state.toString())
returns
2021-12-10 09:15:30.704 [INFO ] [org.openhab.core.model.script.test ] - 12509.0
2.10
2534
how do I check?
You must be using the Rules DSL - if you configured python you would know.
Ok, in that case I cannot test your suggestion?
And that is this string with 7 visible characters, yes?
Guess you have output separate NL/CR characters from your script.
logInfo("results", data1)
logInfo("test", "Chars " + data1.length)
logInfo("results", data2)
logInfo("test", "Chars " + data2.length)
logInfo("results", data3)
logInfo("test", "Chars " + data3.length)
returns
2021-12-10 05:35:01.616 [INFO ] [rg.openhab.core.model.script.results] - 12509.8
2021-12-10 05:35:01.618 [INFO ] [org.openhab.core.model.script.test ] - Chars 8
2021-12-10 05:35:01.619 [INFO ] [rg.openhab.core.model.script.results] - 2.98
2021-12-10 05:35:01.634 [INFO ] [org.openhab.core.model.script.test ] - Chars 5
2021-12-10 05:35:01.636 [INFO ] [rg.openhab.core.model.script.results] - 2957
2021-12-10 05:35:01.637 [INFO ] [org.openhab.core.model.script.test ] - Chars 5
No, @rossko has the right stuff to get you going 
I tried by using “parsing” and it seems to be working so far. Below is the code
rule "solar inverter"
when
//Time cron "0 0/5 * 1/1 * ? *"
then
if(solarman.state == ON) {
var String invdata = executeCommandLine(Duration.ofSeconds(10),"/usr/bin/python", "/var/lib/openhab/INVT-inverter/getPVData.py")
invtstring.postUpdate(invdata)
val data1 = invtstring.state.toString.split("\n").get(0)
invttot.postUpdate(Float::parseFloat(data1))
val data2 = invtstring.state.toString.split("\n").get(1)
invtday.postUpdate(Float::parseFloat(data2))
val data3 = invtstring.state.toString.split("\n").get(2)
invtcurrent.postUpdate(Float::parseFloat(data3))
}
end
How can I convert invttot.postUpdate sentences to below format while still using parsing? Or is it not necessary?
postUpdate("invttot", data1)
Hi @niccodemi, could you please tell me what script/method you use in your python code to retrieve the data from the INVT inverter ? Thanks
Hi, below is modified python script which I am using. It’s based on the one I found on following link
#!/usr/bin/python
import urllib, urllib2, hashlib, re, requests
from xml.etree import ElementTree as ET
from requests.auth import HTTPBasicAuth
#config
username = 'USERNAME' #your inverter webpage username
password = 'PASSWORD' #your inverter webpage password
inverterIP = 'XXX.XXX.XXX.XXX' #inverter ip address
# Process html response
def processResponse(resp, strToken, strNextToken):
#parse response and get values
strTokenLen = len(strToken)
valueIndexToken = resp.find(strToken)
valueIndexNextToken = resp.find(strNextToken)
value = re.sub('[ =";]', '', resp[valueIndexToken+strTokenLen:valueIndexNextToken-5])
#print retreved values
return value
#fetch site from url
url = 'http://' + inverterIP + '/status.html'
try:
res = requests.get(url,auth=HTTPBasicAuth(username, password))
res.raise_for_status()
except requests.exceptions.HTTPError as err:
print err
sys.exit(1)
#gather values
inverter = processResponse(res.content, 'webdata_pv_type', 'webdata_rate_p')
totalToday = processResponse(res.content, 'webdata_today_e', 'webdata_total_e')
totalOveral = processResponse(res.content, 'webdata_total_e', 'webdata_alarm')
now = processResponse(res.content, 'webdata_now_p', 'webdata_today_e')
multiply='1000.0'
etotal1000 = float(totalOveral) * float(multiply)
strTotalOveral=str(etotal1000)
#print to console
print totalOveral
print totalToday
print now
This is the rule which gets the data from python script (via Wifi dongle connected to inverter)
rule "solar inverter"
when
//Time cron "0 0/5 * 1/1 * ? *" //normal
Time cron "0/30 0/1 * 1/1 * ? *" //(every 30 seconds - for testing)
//Time cron "0 44 13 ? * *" //https://github.com/jankeesder/getPVData/blob/master/getPVData.py
then
if(solarman.state == ON) {
var String invdata = executeCommandLine(Duration.ofSeconds(10),"/usr/bin/python", "/var/lib/openhab/INVT-inverter/getPVData.py")
invtstring.postUpdate(invdata)
// logInfo("results", invdata)
val data1 = invtstring.state.toString.split("\n").get(0)
// invttot.postUpdate(Float::parseFloat(String::format("%s",data1).replace(',','.')))
invttot.postUpdate(Float::parseFloat(data1))
// invttot.postUpdate(data1) //worked with OH 3.0
// postUpdate("invttot", "3.142")
val data2 = invtstring.state.toString.split("\n").get(1)
// invtday.postUpdate(data2)
invtday.postUpdate(Float::parseFloat(data2))
// invtday.postUpdate(Float::parseFloat(String::format("%s",data2).replace(',','.')))
val data3 = invtstring.state.toString.split("\n").get(2)
// invtcurrent.postUpdate(data3)
// postUpdate("invtcurrent", data3)
invtcurrent.postUpdate(Float::parseFloat(data3))
// invtcurrent.postUpdate(Float::parseFloat(String::format("%s",data3).replace(',','.')))
// logInfo("results", data1) // had //
// logInfo("test", invtstring.state.toString())
// logInfo("results", data1)
// logInfo("test", "Chars " + data1.length)
// logInfo("results", data2)
// logInfo("test", "Chars " + data2.length)
// logInfo("results", data3)
// logInfo("test", "Chars " + data3.length)
}
end
items
Switch solarman “solarman” { channel=“network:pingdevice:solarman:online”}
String invtstring “inverter string data”
Number invttot “inverter total [%.1f]” (gCharts)
Number invtday “inverter daily [%.1f]”
Number invtcurrent “inverter current power [%.1f]”
And thing
network:pingdevice:solarman [ hostname=“xxx.xxx.xxx.xxx”, retry=1, timeout=4000, refreshInterval=180000 ]
Great! Thanks. So if I understand I’ll have this “status.html” on my future INVT inverter where I can get the info from.
I don’t know about status.html and it’s future implementation.