ENVSYS_GSTRING (aka Generic String) uses the genstr member in
the envsys_data_t struct to add a generic string that envstat(8)
will show as value or state.
It's like the ENVSYS_DRIVER, but doesn't use value_cur. Below
is the dictionary created on these sensors:
<dict>
<key>description</key>
<string>acpibat0 charge state</string>
<key>generic-state-string</key>
<string>NORMAL</string>
<key>monitoring-supported</key>
<false/>
<key>state</key>
<string>valid</string>
<key>type</key>
<string>Generic string</string>
</dict>
Note that it's limited to 32 chars, but we can grow it if needed.
envstat(8) will print ENVSYS_GSTRING sensors as:
$ envstat -dacpibat0 -s"acpibat0 charge state"
acpibat0 charge state: NORMAL
$
1b3709ecde