276 lines
8.7 KiB
Lua
276 lines
8.7 KiB
Lua
--
|
|
-- RTU Gateway System Core Peripheral Backplane
|
|
--
|
|
|
|
local log = require("scada-common.log")
|
|
local network = require("scada-common.network")
|
|
local ppm = require("scada-common.ppm")
|
|
local util = require("scada-common.util")
|
|
|
|
local databus = require("rtu.databus")
|
|
local rtu = require("rtu.rtu")
|
|
|
|
local println = util.println
|
|
|
|
---@class rtu_backplane
|
|
local backplane = {}
|
|
|
|
local _bp = {
|
|
smem = nil, ---@type rtu_shared_memory
|
|
|
|
wlan_pref = true,
|
|
lan_iface = "",
|
|
|
|
act_nic = nil, ---@type nic
|
|
wd_nic = nil, ---@type nic|nil
|
|
wl_nic = nil, ---@type nic|nil
|
|
|
|
sounders = {} ---@type rtu_speaker_sounder[]
|
|
}
|
|
|
|
-- initialize the system peripheral backplane
|
|
---@param config rtu_config
|
|
---@param __shared_memory rtu_shared_memory
|
|
---@return boolean success
|
|
function backplane.init(config, __shared_memory)
|
|
_bp.smem = __shared_memory
|
|
_bp.wlan_pref = config.PreferWireless
|
|
_bp.lan_iface = config.WiredModem
|
|
|
|
-- Modem Init
|
|
|
|
-- init wired NIC
|
|
if type(_bp.lan_iface) == "string" then
|
|
local modem = ppm.get_modem(_bp.lan_iface)
|
|
local wd_nic = network.nic(modem)
|
|
|
|
log.info("BKPLN: WIRED PHY_" .. util.trinary(modem, "UP ", "DOWN ") .. _bp.lan_iface)
|
|
|
|
_bp.wd_nic = wd_nic
|
|
_bp.act_nic = wd_nic -- set this as active for now
|
|
|
|
wd_nic.closeAll()
|
|
wd_nic.open(config.RTU_Channel)
|
|
|
|
databus.tx_hw_wd_modem(modem ~= nil)
|
|
end
|
|
|
|
-- init wireless NIC(s)
|
|
if config.WirelessModem then
|
|
local modem, iface = ppm.get_wireless_modem()
|
|
local wl_nic = network.nic(modem)
|
|
|
|
log.info("BKPLN: WIRELESS PHY_" .. util.trinary(modem, "UP ", "DOWN") .. (iface or ""))
|
|
|
|
-- set this as active if connected or if both modems are disconnected and this is preferred
|
|
if (modem and _bp.wlan_pref) or not (_bp.act_nic and _bp.act_nic.is_connected()) then
|
|
_bp.act_nic = wl_nic
|
|
end
|
|
|
|
_bp.wl_nic = wl_nic
|
|
|
|
wl_nic.closeAll()
|
|
wl_nic.open(config.RTU_Channel)
|
|
|
|
databus.tx_hw_wl_modem(modem ~= nil)
|
|
end
|
|
|
|
-- at least one comms modem is required
|
|
if not ((_bp.wd_nic and _bp.wd_nic.is_connected()) or (_bp.wl_nic and _bp.wl_nic.is_connected())) then
|
|
println("startup> no comms modem found")
|
|
log.warning("BKPLN: no comms modem on startup")
|
|
return false
|
|
end
|
|
|
|
-- Speaker Init
|
|
|
|
-- find and setup all speakers
|
|
local speakers = ppm.get_all_devices("speaker")
|
|
for _, s in pairs(speakers) do
|
|
log.info("BKPLN: SPEAKER LINK_UP " .. ppm.get_iface(s))
|
|
|
|
local sounder = rtu.init_sounder(s)
|
|
table.insert(_bp.sounders, sounder)
|
|
|
|
log.debug(util.c("BKPLN: added speaker sounder, attached as ", sounder.name))
|
|
end
|
|
|
|
databus.tx_hw_spkr_count(#_bp.sounders)
|
|
|
|
return true
|
|
end
|
|
|
|
-- get the active NIC
|
|
function backplane.active_nic() return _bp.act_nic end
|
|
|
|
-- get the sounder interfaces
|
|
function backplane.sounders() return _bp.sounders end
|
|
|
|
-- handle a backplane peripheral attach
|
|
---@param type string
|
|
---@param device table
|
|
---@param iface string
|
|
---@param print_no_fp function
|
|
function backplane.attach(type, device, iface, print_no_fp)
|
|
local wl_nic, wd_nic = _bp.wl_nic, _bp.wd_nic
|
|
|
|
local comms = _bp.smem.rtu_sys.rtu_comms
|
|
|
|
if type == "modem" then
|
|
---@cast device Modem
|
|
|
|
local m_is_wl = device.isWireless()
|
|
|
|
log.info(util.c("BKPLN: ", util.trinary(m_is_wl, "WIRELESS", "WIRED"), " PHY_ATTACH ", iface))
|
|
|
|
if wd_nic and (_bp.lan_iface == iface) then
|
|
-- connect this as the wired NIC
|
|
wd_nic.connect(device)
|
|
|
|
log.info("BKPLN: WIRED PHY_UP " .. iface)
|
|
print_no_fp("wired comms modem reconnected")
|
|
|
|
databus.tx_hw_wd_modem(true)
|
|
|
|
if (_bp.act_nic ~= wd_nic) and not _bp.wlan_pref then
|
|
-- switch back to preferred wired
|
|
_bp.act_nic = wd_nic
|
|
|
|
comms.switch_nic(_bp.act_nic, _bp.smem.rtu_state)
|
|
log.info("BKPLN: switched comms to wired modem (preferred)")
|
|
end
|
|
elseif wl_nic and (not wl_nic.is_connected()) and m_is_wl then
|
|
-- connect this as the wireless NIC
|
|
wl_nic.connect(device)
|
|
|
|
log.info("BKPLN: WIRELESS PHY_UP " .. iface)
|
|
print_no_fp("wireless comms modem reconnected")
|
|
|
|
databus.tx_hw_wl_modem(true)
|
|
|
|
if (_bp.act_nic ~= wl_nic) and _bp.wlan_pref then
|
|
-- switch back to preferred wireless
|
|
_bp.act_nic = wl_nic
|
|
|
|
comms.switch_nic(_bp.act_nic, _bp.smem.rtu_state)
|
|
log.info("BKPLN: switched comms to wireless modem (preferred)")
|
|
end
|
|
elseif wl_nic and m_is_wl then
|
|
-- the wireless NIC already has a modem
|
|
device.closeAll()
|
|
|
|
print_no_fp("standby wireless modem connected")
|
|
log.info("BKPLN: standby wireless modem connected")
|
|
else
|
|
device.closeAll()
|
|
|
|
print_no_fp("unassigned modem connected")
|
|
log.warning("BKPLN: unassigned modem connected")
|
|
end
|
|
elseif type == "speaker" then
|
|
---@cast device Speaker
|
|
|
|
log.info("BKPLN: SPEAKER LINK_UP " .. iface)
|
|
|
|
table.insert(_bp.sounders, rtu.init_sounder(device))
|
|
|
|
print_no_fp("a speaker was connected")
|
|
log.info("BKPLN: setup speaker sounder for speaker " .. iface)
|
|
|
|
databus.tx_hw_spkr_count(#_bp.sounders)
|
|
end
|
|
end
|
|
|
|
-- handle a backplane peripheral detach
|
|
---@param type string
|
|
---@param device table
|
|
---@param iface string
|
|
---@param print_no_fp function
|
|
function backplane.detach(type, device, iface, print_no_fp)
|
|
local wl_nic, wd_nic = _bp.wl_nic, _bp.wd_nic
|
|
|
|
local comms = _bp.smem.rtu_sys.rtu_comms
|
|
|
|
if type == "modem" then
|
|
---@cast device Modem
|
|
|
|
log.info(util.c("BKPLN: PHY_DETACH ", iface))
|
|
|
|
if wd_nic and wd_nic.is_modem(device) then
|
|
wd_nic.disconnect()
|
|
log.info("BKPLN: WIRED PHY_DOWN " .. iface)
|
|
|
|
databus.tx_hw_wd_modem(false)
|
|
elseif wl_nic and wl_nic.is_modem(device) then
|
|
wl_nic.disconnect()
|
|
log.info("BKPLN: WIRELESS PHY_DOWN " .. iface)
|
|
|
|
databus.tx_hw_wl_modem(false)
|
|
end
|
|
|
|
-- we only care if this is our active comms modem
|
|
if _bp.act_nic.is_modem(device) then
|
|
print_no_fp("active comms modem disconnected")
|
|
log.warning("BKPLN: active comms modem disconnected")
|
|
|
|
-- failover and try to find a new comms modem
|
|
if _bp.act_nic == wl_nic then
|
|
-- wireless active disconnected
|
|
-- try to find another wireless modem, otherwise switch to wired
|
|
local modem, m_iface = ppm.get_wireless_modem()
|
|
if wl_nic and modem then
|
|
log.info("BKPLN: found another wireless modem, using it for comms")
|
|
|
|
wl_nic.connect(modem)
|
|
|
|
log.info("BKPLN: WIRELESS PHY_UP " .. m_iface)
|
|
|
|
databus.tx_hw_wl_modem(true)
|
|
elseif wd_nic and wd_nic.is_connected() then
|
|
_bp.act_nic = wd_nic
|
|
|
|
comms.switch_nic(_bp.act_nic, _bp.smem.rtu_state)
|
|
log.info("BKPLN: switched comms to wired modem")
|
|
end
|
|
elseif wl_nic and wl_nic.is_connected() then
|
|
-- wired active disconnected, wireless available
|
|
_bp.act_nic = wl_nic
|
|
|
|
comms.switch_nic(_bp.act_nic, _bp.smem.rtu_state)
|
|
log.info("BKPLN: switched comms to wireless modem")
|
|
else
|
|
-- wired active disconnected, wireless unavailable
|
|
end
|
|
elseif wd_nic and wd_nic.is_modem(device) then
|
|
-- wired, but not active
|
|
print_no_fp("standby wired modem disconnected")
|
|
log.info("BKPLN: standby wired modem disconnected")
|
|
elseif wl_nic and wl_nic.is_modem(device) then
|
|
-- wireless, but not active
|
|
print_no_fp("standby wireless modem disconnected")
|
|
log.info("BKPLN: standby wireless modem disconnected")
|
|
else
|
|
print_no_fp("unassigned modem disconnected")
|
|
log.warning("BKPLN: unassigned modem disconnected")
|
|
end
|
|
elseif type == "speaker" then
|
|
---@cast device Speaker
|
|
|
|
log.info("BKPLN: SPEAKER LINK_DOWN " .. iface)
|
|
|
|
for i = 1, #_bp.sounders do
|
|
if _bp.sounders[i].speaker == device then
|
|
table.remove(_bp.sounders, i)
|
|
|
|
print_no_fp("a speaker was disconnected")
|
|
log.warning("BKPLN: speaker sounder " .. iface .. " disconnected")
|
|
|
|
databus.tx_hw_spkr_count(#_bp.sounders)
|
|
break
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
return backplane
|