View Source VintageNetMobile.SignalMonitor (vintage_net_mobile v0.11.5)

Monitor the cell signal levels

This monitor queries the modem for cell signal level information and posts it to VintageNet properties.

The following properties are reported:

Property	Values	Description
`signal_asu`	`0-31,99`	This is the raw Arbitrary Strength Unit (ASU) reported. It's interpretation depends on the modem and possibly the connection technology.
`signal_4bars`	`0-4`	The signal level in "bars" for presentation to a user.
`signal_dbm`	`-144 - -44`	The signal level in dBm. Interpretation depends on the connection technology.

Summary

opt()

The options for the monitor are

Returns a specification to start this module under a supervisor.

start_link(opts)

@type opt() ::
  {:signal_check_interval, non_neg_integer()}
  | {:ifname, String.t()}
  | {:tty, String.t()}

The options for the monitor are:

:signal_check_interval - the number of milliseconds to wait before asking the modem for the signal quality (default 5 seconds)
:ifname - the interface name the mobile connection is using
:tty - the tty name that is used to send AT commands

Returns a specification to start this module under a supervisor.

@spec start_link([opt()]) :: GenServer.on_start()