Hello,
I am reaching out to you because I would like to create a Lua script on my Wyser for KNX (Schneider) to make a request to capture the outdoor temperature from my weather station via the Ecowitt website. Ecowitt provides an API for making such requests. I tried to set it up directly on the machine, but I couldn't make it work.
As a result, I ran a script on my PC running Linux because it's easier to use the standard output. To make it work, I had to install additional packages: lua-socket, lua-socket, lua-socket. Below is the script that works on my PC (except the KNX part at the bottom) but does not work on the LogicMachine.
Now, I am facing a portability issue to this KNX supervisor. Could someone help me? I believe I am not very far from achieving my goal.
Thank you in advance.
NiSAGNEL
I am reaching out to you because I would like to create a Lua script on my Wyser for KNX (Schneider) to make a request to capture the outdoor temperature from my weather station via the Ecowitt website. Ecowitt provides an API for making such requests. I tried to set it up directly on the machine, but I couldn't make it work.
As a result, I ran a script on my PC running Linux because it's easier to use the standard output. To make it work, I had to install additional packages: lua-socket, lua-socket, lua-socket. Below is the script that works on my PC (except the KNX part at the bottom) but does not work on the LogicMachine.
Now, I am facing a portability issue to this KNX supervisor. Could someone help me? I believe I am not very far from achieving my goal.
Thank you in advance.
NiSAGNEL
Code:
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--I left in comments what was useful to me for development on my PC
json = require('json')
ltn12 = require('ltn12')
https = require('ssl.https')
-- Extraire les variables de l'URL
local applicationKey = 'MyApplication-Key'
local apiKey = 'MyAPI-Key'
local MacAdd = 'Mon Adresse MAC'
local TempUnit = '1' -- Temperature Unit 1 = °C
local Research = 'outdoor.temperature'
-- URL complète avec les paramètres
local url = 'https://api.ecowitt.net/api/v3/device/real_time?application_key=' .. applicationKey .. '&api_key=' .. apiKey .. '&mac=' .. MacAdd .. '&temp_unitid=' .. TempUnit .. '&call_back=' .. Research
-- Tableau pour stocker la réponse HTTP
local resp = {}
-- Effectuer la requête HTTPS
local res, code, headers, status = https.request{
url = url,
method = 'GET',
sink = ltn12.sink.table(resp),
}
-- Variable pour les erreurs de requetes
local LocalCountError = '1'
-- Afficher le code de statut et la réponse brute pour le débogage
-- print("Code de statut:", code)
-- print("Réponse brute:", table.concat(resp))
-- Vérifier le code de statut de la réponse
if code == 200 then
-- Concaténer la réponse HTTP
resp = table.concat(resp)
-- Décoder la réponse JSON
local data = json.decode(resp)
-- Afficher la réponse JSON brute pour le débogage
-- print("Raw JSON response:", resp)
-- Vérifier si la réponse est un objet JSON valide
if data then
-- Vérifier si le champ 'msg' est 'success'
if data.msg == "success" then
-- Extraire la valeur de la température
local tempExt = tonumber(data.data.outdoor.temperature.value)
if tempExt then
-- print(Research .. " : " .. tempExt .. " ℃")
LocalCountError = '0'
else
-- print("Impossible d'extraire la température.")
LocalCountError = LocalCountError + 1
end
else
-- print("Erreur dans la réponse JSON : " .. data.msg)
LocalCountError = LocalCountError + 10
end
else
-- print("Réponse JSON invalide.")
LocalCountError = LocalCountError + 100
end
else
print("La requête HTTPS a échoué. Code de statut : " .. code)
LocalCountError = LocalCountError + 1000
end
-- Error Management
-- Read Error on KNX address
local Error = tonumber(grp.read('32/3/254')) or 999
if LocalCountError ~= 0 then
Error = Error + 1
if Error > 5 then
tempExt = '99'
end
else
Error = 0
end
-- Send to KNX Address Error
grp.write('32/3/254', Error)
-- Send to KNX Address Valeur de Température
grp.write('32/3/1', tempExt)
