Wireless card not receiving messages reliably?

[dom11990 0]

hi all,

I'm on the Enigmatica 2 Expert Modpack and trying to get a simple wireless network up and running. I wrote two programs in MineOS to send and receive broadcast messages. Unfortunately, the receiver seems to randomly drop some.

This is the recevier:

local event = require("event")
local comp = require("component")
---------------------------------------------------------------------------------

modem = comp.get("modem")
modem.open(1)

-- modem_message signature: type: string = "modem_message", localAddress: string, remoteAddress: string, port: number, distance: number, ....
local function ModemEventHandler(e1,localAddress,remoteAddress,port,distance,data1,data2,data3)
  if type(e1) == "string" then
    print(e1)
    if e1 == "modem_message" then
      print("Distance: " .. distance .. " contents: " .. data1)
    end
  end
end
---------------------------------------------------------------------------------

event.addHandler(ModemEventHandler)

This the sender:

 

-- Import libraries
local event = require("event")
local cp = require("component")

---------------------------------------------------------------------------------

modem = cp.get("modem")

function Timer1_s()
  data = "sent some data " .. computer.uptime()
    res = modem.broadcast(1,data)
    if res then 
      st = "true"
    else
      st="false"
    end
    print(data .. " " .. st)
end

event.addHandler(Timer1_s,1)

The sender always prints the uptime and true whereas the receiver seems to skip around 10% of them. Range is 65.97, everything is max tier. Any idea on what could be causing this or do you suspect it has to do with MineOS not handling the events properly?

Edit:

I went ahead and made another computer and put it 2 blocks away from the sender. This machine reliably receives the messages. What could be going on? Everything is chunkloaded and the wiki says explicitly that packets cannot get lost.