I usually connect my stereopi to home WiFi network (to easily work on it with the computer) and mobile-phone WiFi network (for in-field control). However, SLP allows to store the ids of only one of these networks at a time.
By modifying the scripts, it is possible to have multiple access points registered (the first seen will be used). That way, I do not have to change the configuration of the stereopi anymore.
In /opt/StereoPi/scripts/wlan.lib.php
Add
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shell_exec('cat /etc/wifi.conf >> /run/' . $iface . '.conf');
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file_put_contents("/run/$iface.conf", "country=00\n");
It is possible to make the stereopi.conf more important by adding the aforementioned added line one line after.
To construct /etc/wifi.conf, you can (with the filesystem unlocked) do
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wpa_passphrase "SSID" "password" >> /etc/wifi.conf
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network={
ssid="MyPhone"
#psk="SuperPassword"
psk=479ad0624653e3b28b8da0fa355692603071a29f8613217f087eaec1b126ba4e
}
network={
ssid="MyHome"
#psk="SuperPassword"
psk=83f244c0e1f4079b262ce69d1c7075ddaaff397e1c63cf397ebe8fb27b0d43d5
}
network={
ssid="MyHome2"
psk=d1b4719a8788e370f0c03f5018422a2eb8bf11c557b6d21656087fd79dcd2f40
}