Create em300.py

powermeter/em300.py

@@ -0,0 +1,43 @@
+from .base import Powermeter
+import requests
+import time
+import json
+
+class Em300(Powermeter):
+    def __init__(self, ip: str, user: str, password:str, json_power_calculate: bool):
+        self.ip = ip
+        self.user = user
+        self.password = password
+        self.json_power_calculate = json_power_calculate
+        self.session = requests.Session()
+
+    def get_json(self, path):
+        import requests
+        import json
+
+        headers = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; "}
+        myparams= {'login': self.user, 'password': self.password, 'save_login': '1'}
+        global mySession
+
+        try:
+            mySession.get('http://'+ self.ip +'/mum-webservice/data.php',  headers=headers)
+        except:
+            mySession = requests.Session()
+            r=mySession.get('http://'+ self.ip + '/start.php', headers=headers)
+            if self.user != '':
+                time.sleep(0.25)
+                mySession.post('http://'+ self.ip + '/start.php', myparams, headers=headers)
+            r=mySession.get('http://'+ self.ip +'/mum-webservice/data.php',  headers=headers)
+
+        em300data = json.loads(r.text)
+
+        return (em300data)    
+
+    def get_powermeter_watts(self):
+        response = self.get_json(self)
+        if not self.json_power_calculate:
+            return [int(response["1-0:1.4.0*255"])]
+        else:
+            power_in = response["1-0:1.4.0*255"]
+            power_out = response["1-0:2.4.0*255"]
+            return [int(power_in) - int(power_out)]