Merge pull request #75 from michbeck100/feature/add_default_value

Adds an optional default value for register values.

SunGather/registers-sungrow.yaml

@@ -1,4 +1,4 @@
-version:  0.2.0
+version:  0.2.1
 vendor: Sungrow
 registers:
   - read:
@@ -1144,6 +1144,7 @@ registers:
           value: "Restarting"
         - response: 0x4000
           value: "EMS Run"
+      default: "Unknown"
       models: ["SH5K-20","SH3K6","SH4K6","SH5K-V13","SH5K-30","SH3K6-30","SH4K6-30","SH5.0RS","SH3.6RS","SH4.6RS","SH6.0RS","SH10RT","SH10RT-V112","SH8.0RT","SH6.0RT","SH5.0RT"] 
     - name: "running_state"
       level: 2

SunGather/sungather.py

@@ -233,14 +233,18 @@ class SungrowInverter():
 
                     # We convert a system response to a human value 
                     if register.get('datarange'):
+                        match = False
                         for value in register.get('datarange'):
                             if value['response'] == rr.registers[num]:
                                 register_value = value['value']
-
-
+                                match = True
+                        if not match:
+                            default = register.get('default')
+                            logging.debug(f"No matching value for {register_value} in datarange of {register_name}, using default {default}")
+                            register_value = default
 
                     if register.get('accuracy'):
-                        register_value = round(register_value * register.get('accuracy'),2)
+                        register_value = round(register_value * register.get('accuracy'), 2)
 
                     # Set the final register value with adjustments above included 
                     self.latest_scrape[register_name] = register_value