listener.lua

local tArgs = { ... }
if #tArgs < 2 then
    print("Usage: listener <frequency> <side>")
    return
end

local freq = tArgs[1]
local side = tArgs[2]

rednet.open("bottom")

while true do
    local id, msg, state  = rednet.receive()
    if msg == freq then
        rs.setOutput(side, state == "true")
--        print(side.." set to "..state)
    end
end