docs/presence/README.md

1 # Fan Presence Configuration File
16 The `phosphor-fan-presence-tach` application is controlled by a configuration
20 presence of each fan within a machine.
30 See [config.json](../../presence/example/config.json).
38 `/usr/share/phosphor-fan-presence/presence/`
49 i.e.) `/usr/share/phosphor-fan-presence/presence/config.json`
66 The `phosphor-fan-presence-tach` application then traverses the supported
72 1. `/usr/share/phosphor-fan-presence/presence/com.ampere.Hardware.Chassis.Model.MtJade/`
74 2. `/usr/share/phosphor-fan-presence/presence/com.ampere.Hardware.Chassis.Model.MtMitchell/config.j…
78 and `phosphor-fan-presence-tach` application terminates preventing the machine
83 `/etc/phosphor-fan-presence/presence/`
93 `mkdir -p /etc/phosphor-fan-presence/presence`
97 The `phosphor-fan-presence-tach` application will search for the config file at
110 presence is detected and the policy used to update its present state within
164       "Uses two methods of presence detection"
170         "comments": "Use GPIO for presence detection",
177         "comments": "Also use the tach for presence detection",
205 fan presence configuration instead of the config file located under the
210 The config file is loaded when the `phosphor-fan-presence-tach` application
216 `systemctl kill -s HUP phosphor-fan-presence-tach@0.service`
220 `journalctl -u phosphor-fan-presence-tach@0.service | grep Loading`