Enum type for BMS Message Category

BmsApp.py

@@ -6,6 +6,10 @@ import wx.propgrid
 
 import gettext
 
+from pubsub import pub
+
+from enum import Enum
+
 import can
 import cantools
 
@@ -22,43 +26,59 @@ def parse_can_id (arbitration_id):
     mtype = arbitration_id & 0xff
     return mtag, mid, mtype
 
+BMS_MSG_CAT = Enum(
+    "BMS_MSG_CAT",
+    "BMS_PROFILE "
+    "PACK_PROFILE "
+    "PACK_ALARM "
+    "PACK_DATA "
+    "MODULE_DATA "
+    "UNDEFINED "
+    "ERROR "
+)
+
 def findCategory (imsg, isignal):
     tag, id, type = parse_can_id(imsg)
+
     if tag != 0x14180:
-        return None
+        return BMS_MSG_CAT.ERROR
 
     if 0x00 <= type <= 0x06:
-        return "bmsprofile"
+        return BMS_MSG_CAT.BMS_PROFILE
 
     elif type == 0x11:
-        return "packprofile"
+        return BMS_MSG_CAT.PACK_PROFILE
 
     elif type == 0x10:
         if isignal < 4:
-            return "packprofile"
+            return BMS_MSG_CAT.PACK_PROFILE
         else:
-            return "packalarms"
+            return BMS_MSG_CAT.PACK_ALARM
 
     elif type == 0x15:
         if isignal < 3:
-            return "packdata"
+            return BMS_MSG_CAT.PACK_DATA
         else:
-            return "packalarms"
+            return BMS_MSG_CAT.PACK_ALARM
 
     elif type == 0x14:
-        return "packdata"
+        return BMS_MSG_CAT.PACK_DATA
 
     elif 0x16 <= type <= 0x20:
-        return "packdata"
+        return BMS_MSG_CAT.PACK_DATA
 
     elif 0x07 <= type <= 0x0B:
-        return "moduledata"
+        return BMS_MSG_CAT.MODULE_DATA
 
     else:
-        # print("undefined category ", hex(imsg))
+        return BMS_MSG_CAT.UNDEFINED
-        return "undefined"
 
-cat_propgrid = ["bmsprofile", "packprofile", "packdata", "packalarms",]
+cat_propgrid = [
+    BMS_MSG_CAT.BMS_PROFILE,
+    BMS_MSG_CAT.PACK_PROFILE,
+    BMS_MSG_CAT.PACK_ALARM,
+    BMS_MSG_CAT.PACK_DATA
+]
 
 tohex = "{:#04X}-".format
 
@@ -74,7 +94,8 @@ class BmsMonitorView(BmsMonitorFrame):
 
         self.property_grid_page_info = self.property_grid_1.AddPage("Info")
 
-        for cat_name in cat_propgrid:
+        for c in cat_propgrid:
+            cat_name = c.name
             cat = wx.propgrid.PropertyCategory(label=cat_name)
             self.property_grid_page_info.Append(cat)
 
@@ -86,9 +107,9 @@ class BmsMonitorView(BmsMonitorFrame):
 
             if id == 0x02:
 
-                if findCategory(msg.frame_id, 0) == "bmsprofile":
+                if findCategory(msg.frame_id, 0) == BMS_MSG_CAT.BMS_PROFILE:
                     prop = wx.propgrid.StringProperty(label=msg.name)
-                    self.property_grid_page_info.AppendIn("bmsprofile", prop)
+                    self.property_grid_page_info.AppendIn(BMS_MSG_CAT.BMS_PROFILE.name, prop)
 
                 for isig, signal in enumerate(msg.signals):
                     plabel = tohex(type)+signal.name
@@ -98,11 +119,11 @@ class BmsMonitorView(BmsMonitorFrame):
                     cat = findCategory(msg.frame_id, isig)
 
                     if cat in cat_propgrid:
-                        self.property_grid_page_info.AppendIn(cat, prop)
+                        self.property_grid_page_info.AppendIn(cat.name, prop)
 
                     '''
                     if tag == 0x14180 and id == 0x2 and 0x00 <= type <= 0x06: # BMS Profile
-                        self.property_grid_page_info.AppendIn("bmsprofile", prop)
+                        self.property_grid_page_info.AppendIn(BMS_MSG_CAT.BMS_PROFILE, prop)
 
                     if tag == 0x14180 and id == 0x2 and 0x10 <= type <= 0x20:  # Pack Profile and Data
                         self.property_grid_page_info.AppendIn("packdata", prop)
@@ -149,7 +170,7 @@ class BmsMonitorView(BmsMonitorFrame):
         master_id = int(self.choice_1.GetStringSelection(), 16)
 
         if mid == master_id:
-            if findCategory(fullid, 0) == "moduledata":
+            if findCategory(fullid, 0) == BMS_MSG_CAT.MODULE_DATA:
                 try:
                     dmsg = db.decode_message(msg.arbitration_id, msg.data)
                 except KeyError as key:
@@ -157,7 +178,7 @@ class BmsMonitorView(BmsMonitorFrame):
                 else:
                     self.__update_bm_state(dmsg)
 
-            elif findCategory(fullid, 0) == "bmsprofile":
+            elif findCategory(fullid, 0) == BMS_MSG_CAT.BMS_PROFILE:
                 try:
                     print ("bmsprofile message raw", (dbmsg.name), msg.data, msg.data.decode())
                 except UnicodeDecodeError:
@@ -182,7 +203,7 @@ class BmsMonitorView(BmsMonitorFrame):
 
                     '''
                     if tag == 0x14180 and id == 0x2 and 0x00 <= type <= 0x06: # BMS Profile
-                        self.property_grid_page_info.AppendIn("bmsprofile", prop)
+                        self.property_grid_page_info.AppendIn(BMS_MSG_CAT.BMS_PROFILE, prop)
 
                     if tag == 0x14180 and id == 0x2 and 0x10 <= type <= 0x20:  # Pack Profile and Data
                         self.property_grid_page_info.AppendIn("packdata", prop)