Better management of data to display

raspberry/python/mqtt2epaper.py

@@ -76,13 +76,6 @@ def on_message(client, userdata, msg):
         payload = msg.payload.decode()
         val = json.loads(payload)
 
-        #Is value consistent ?
-        try:
-            val['value'] = float(val['value'] )
-        except:
-            print("Value error: {}".format(val['value']))
-            val['value'] = float('nan')
-
         #Manage special character "degree"
         val['unit'] = val['unit'].replace('deg', '°')
 
@@ -92,8 +85,19 @@ def on_message(client, userdata, msg):
                        'AP'     : (1, data2_line),
                        'VBAT'   : (inkyphat.WIDTH / 2 + 12, data2_line),
                       }
+        
         print(val)
         if val['type'] in coord_type:
+
+            #Manage special character "degree"
+            val['unit'] = val['unit'].replace('deg', '°')
+            #Is value consistent ?
+            try:
+                val['value'] = float(val['value'] )
+            except:
+                print("Value error: {}".format(val['value']))
+                val['value'] = float('nan')
+
             #Erase old data
             inkyphat.rectangle(coord_type[val['type']] + (coord_type[val['type']][0] + inkyphat.WIDTH / 2 - 2,
                                                           coord_type[val['type']][1] + 16),
@@ -104,13 +108,9 @@ def on_message(client, userdata, msg):
                           font=data_font,
                           fill=black)
             new_data_flag = True
-            update_display()
 
     # Print feather's date and time on epaper display
-    elif subtopics[0] == "SYS":
-        payload = msg.payload.decode()
-        val = json.loads(payload)
-        if val['type'] == "TIME":
+        elif val['type'] == "TIME":
             try:
                 #Check the date and time and offset to the right timezone
                 dt_texte = datetime.strftime(datetime.strptime(val['value'], "%Y/%m/%d_%H:%M:%S") + TimeZone.utcoffset(None),
@@ -123,7 +123,7 @@ def on_message(client, userdata, msg):
             # and draw the new date
             inkyphat.text((0, 31), dt_texte, font=font12, fill=black)
             new_data_flag = True
-            update_display()
+
 
 def on_message_camera(client, userdata, msg):
     """Update display with info from camera (camera shooting new picture or name