maemo.org - Talk - using led with python

Hi,
searching the internet for making my N900 led blinking I found following code:

Code:

#!/usr/bin/env python

# -*- coding: utf-8 -*-



import osso

import time



_MCE_SERVICE = 'com.nokia.mce'

_MCE_REQUEST_PATH = '/com/nokia/mce/request'

_MCE_REQUEST_IF = 'com.nokia.mce.request'

_ENABLE_LED = 'req_led_pattern_activate'

_DISABLE_LED = 'req_led_pattern_deactivate'

_VIBRATE = 'req_vibrator_pattern_activate'

_VIBRATE_PATTERN= 'PatternChatAndEmail'

_LED_PATTERN = 'PatternCommunicationIM'



osso_c = osso.Context('test', '0.1', False)

rpc = osso.Rpc(osso_c)



def led_flash():

     rpc.rpc_run(_MCE_SERVICE, _MCE_REQUEST_PATH,_MCE_REQUEST_IF,_ENABLE_LED,rpc_args=(_LED_PATTERN,"",""),use_system_bus=True)



def vibrate():

    rpc.rpc_run(_MCE_SERVICE, _MCE_REQUEST_PATH, _MCE_REQUEST_IF, _VIBRATE, rpc_args=(_VIBRATE_PATTERN,"",""),use_system_bus=True)





for i in range(3):

    led_flash()

    time.sleep(1)

for i in range(3):

    vibrate()

    time.sleep(1)

vibrate works as expected, led not. What am I missing?