supervisor comms init

scada-common/comms.lua

@@ -5,6 +5,11 @@ PROTOCOLS = {
     COORD_DATA = 3  -- data packets for coordinators to/from supervisory controller
 }
 
+SCADA_SV_MODES = {
+    ACTIVE = 0,
+    BACKUP = 1
+}
+
 RPLC_TYPES = {
     KEEP_ALIVE = 0,     -- keep alive packets
     LINK_REQ = 1,       -- linking requests
@@ -131,8 +136,15 @@ function coord_comms()
 end
 
 -- supervisory controller communications
-function superv_comms()
+function superv_comms(mode, num_reactors, modem, dev_listen, fo_channel, sv_channel)
     local self = {
+        mode = mode,
+        seq_id = 0,
+        num_reactors = num_reactors,
+        modem = modem,
+        dev_listen = dev_listen,
+        fo_channel = fo_channel,
+        sv_channel = sv_channel,
         reactor_struct_cache = nil
     }
 end

supervisor/config.lua

@@ -5,14 +5,12 @@
 --      instant failover if active goes offline without re-sync
 SYSTEM_TYPE = 'active'
 
--- scada network
+-- scada network listen for PLC's and RTU's
-SCADA_NET_PFX = 16000
+SCADA_DEV_LISTEN = 16000
 -- failover synchronization
 SCADA_FO_CHANNEL = 16001
--- listen port for SCADA supervisor access
+-- listen port for SCADA supervisor access by coordinators
 SCADA_SV_CHANNEL = 16002
--- listen port for PLC's
-SCADA_PLC_LISTEN = 16003
 
 -- expected number of reactors
 NUM_REACTORS = 4

supervisor/scada-supervisor.lua

@@ -20,14 +20,24 @@ if modem == nil then
     return
 end
 
--- read config
+-- determine active/backup mode
-
+local mode = comms.SCADA_SV_MODES.BACKUP
--- start comms
+if config.SYSTEM_TYPE == "active" then
-if not modem.isOpen(config.LISTEN_PORT) then
+    mode = comms.SCADA_SV_MODES.ACTIVE
-    modem.open(config.LISTEN_PORT)
 end
 
-local comms = comms.superv_comms(config.NUM_REACTORS, modem, config.SCADA_PLC_LISTEN, config.SCADA_SV_CHANNEL)
+-- start comms, open all channels
+if not modem.isOpen(config.SCADA_DEV_LISTEN) then
+    modem.open(config.SCADA_DEV_LISTEN)
+end
+if not modem.isOpen(config.SCADA_FO_CHANNEL) then
+    modem.open(config.SCADA_FO_CHANNEL)
+end
+if not modem.isOpen(config.SCADA_SV_CHANNEL) then
+    modem.open(config.SCADA_SV_CHANNEL)
+end
+
+local comms = comms.superv_comms(config.NUM_REACTORS, modem, config.SCADA_DEV_LISTEN, config.SCADA_FO_CHANNEL, config.SCADA_SV_CHANNEL)
 
 -- base loop clock (4Hz, 5 ticks)
 local loop_tick = os.startTimer(0.25)