pyfanctl/fan_control.py

#!/usr/bin/env python

import gobject
import dbus
import dbus.service
import dbus.mainloop.glib
from obmc.dbuslib.bindings import get_dbus, DbusProperties, DbusObjectManager

DBUS_NAME = 'org.openbmc.control.Fans'
OBJ_PATH = '/org/openbmc/control/fans'
IFACE_NAME = 'org.openbmc.control.Fans'

FAN_BUS = 'org.openbmc.Sensors'
FAN_OBJS = [
    '/org/openbmc/sensors/speed/fan0',
    '/org/openbmc/sensors/speed/fan1',
    '/org/openbmc/sensors/speed/fan2',
    '/org/openbmc/sensors/speed/fan3',
    '/org/openbmc/sensors/speed/fan4',
    '/org/openbmc/sensors/speed/fan5',
]
FAN_IFACE = 'org.openbmc.SensorValue'


class FanControl(DbusProperties, DbusObjectManager):
    def __init__(self, bus, name):
        super(FanControl, self).__init__(
            conn=bus,
            object_path=name)
        self.Set(IFACE_NAME, "floor", 250)
        self.Set(IFACE_NAME, "ceiling", 255)
        self.fan_intf = []
        ## create interface proxies to all fans
        for fan in FAN_OBJS:
            print "Initializing fan: "+fan
            obj = bus.get_object(FAN_BUS, fan, introspect=False)
            self.fan_intf.append(dbus.Interface(obj, FAN_IFACE))

    @dbus.service.method(DBUS_NAME, in_signature='', out_signature='')
    def setMax(self):
        print "Setting fans to max"
        for intf in self.fan_intf:
            intf.setValue(dbus.UInt32(255))


if __name__ == '__main__':
    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
    bus = get_dbus()
    fan_control = FanControl(bus, OBJ_PATH)
    mainloop = gobject.MainLoop()

    print "Starting fan control"
    fan_control.setMax()

    fan_control.unmask_signals()
    name = dbus.service.BusName(DBUS_NAME, bus)
    mainloop.run()

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