refactored RTU devices

rtu/dev/imatrix_rtu.lua

@@ -0,0 +1,33 @@
+-- #REQUIRES rtu.lua
+
+function new(imatrix)
+    local self = {
+        rtu = rtu.rtu_init(),
+        imatrix = imatrix
+    }
+
+    local rtu_interface = function ()
+        return self.rtu
+    end
+
+    -- discrete inputs --
+    -- none
+
+    -- coils --
+    -- none
+
+    -- input registers --
+    -- build properties
+    self.rtu.connect_input_reg(self.imatrix.getTotalMaxEnergy)
+    -- containers
+    self.rtu.connect_input_reg(self.imatrix.getTotalEnergy)
+    self.rtu.connect_input_reg(self.imatrix.getTotalEnergyNeeded)
+    self.rtu.connect_input_reg(self.imatrix.getTotalEnergyFilledPercentage)
+
+    -- holding registers --
+    -- none
+
+    return {
+        rtu_interface = rtu_interface
+    }
+end