problem with 4g modem

[EjvindHald]

I have been trying it over the weekend, and it is only working now and then. Sometimes I can leave it for 1 hour, and then it can process a single new message - sometimes a few messages. If I enable the log writing, then it usually works, but that is not a long term solution.

This morning I got a reply after 7 minutes on a read request. This happens sometimes - sometimes no reply at all.

Hope you have some good ideas. The hardware is LM5p2-RIO3LTE.

[admin]

Logging does not affect how the script works. Try checking the signal quality periodically, maybe the modem loses connection: https://forum.logicmachine.net/showthrea...2#pid34692

You can modify the logging part to skip timeout errors:

Code:

local res, err, cmd, pos, sms

  res, err = self:read()
  if err ~= 'timeout` then
    log(res, err)
  end

[EjvindHald]

Here is the signal strength, which I things looks good. My antenna is located quite high which explains the good signal quality.

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The change in the logging to filter out timeout is actually very good. When I send a SMS request with no response, there is no activity in neither Logs nor Alerts tab. However, if I do a LM reboot it picks up the previous message and does a proper respond.

If you can't figure it out, I will live with it. After all, the sendsms function is by far the most important, and that works flawlessly.

[admin]

Signal quality is good.

Looks like the issue is in the modem and/or SIM card. When LM boots the modem is power cycled. When the script starts it deletes all previously received SMS messages. If you say that sent messages are processed after a reboot it means that these messages weren't received previously otherwise they would have been deleted.