check for table type before checking length, added power conversion/formatting helpers

2022-09-22 21:31:07 -04:00
parent 50be7f9ca2
commit 4f7775ccb6
8 changed files with 43 additions and 34 deletions
--- a/scada-common/comms.lua
+++ b/scada-common/comms.lua
@@ -143,8 +143,12 @@ function comms.scada_packet()
            if #self.raw >= 3 then
                self.seq_num = self.raw[1]
                self.protocol = self.raw[2]
-                self.length = #self.raw[3]
-                self.payload = self.raw[3]
+
+                -- element 3 must be a table
+                if type(self.raw[3]) == "table" then
+                    self.length = #self.raw[3]
+                    self.payload = self.raw[3]
+                end
            end

            self.valid = type(self.seq_num) == "number" and