Added default config file building

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/trunk@1952 b32b6428-25c9-4566-ad07-03861ab6144f

devices/sensors/HTU21D/xaal/htu21d/devs.py

 
 from __future__ import print_function
 
-import xaal.lib
+from xaal.lib import Device,tools
 import logging
 import platform
 from . import HTU21D
@@ -9,10 +9,10 @@ from . import HTU21D
 
 PACKAGE_NAME = "xaal.htu21d"
 
-logger = xaal.lib.tools.get_logger(PACKAGE_NAME,logging.DEBUG,"%s.log" % PACKAGE_NAME)
+logger = tools.get_logger(PACKAGE_NAME,logging.DEBUG,"%s.log" % PACKAGE_NAME)
 
 def build_dev(addr,devtype):
-    dev            = xaal.lib.Device(devtype)
+    dev            = Device(devtype)
     dev.address    = addr
     dev.vendor_id  = "IHSEV"
     dev.version    = 0.1
@@ -35,10 +35,21 @@ def smooth(attribute,value,gap):
 class GW:
     def __init__(self,engine):
         self.engine = engine
+        self.config()
         self.setup()
 
+    def config(self):
+        cfg = tools.load_cfg(PACKAGE_NAME)
+        if not cfg:
+            logger.info('Missing config file, building a new one')
+            cfg = tools.new_cfg(PACKAGE_NAME)
+            cfg['config']['thermometer'] = tools.get_random_uuid()
+            cfg['config']['hygrometer'] = tools.get_random_uuid()
+            cfg.write()
+        self.cfg = cfg
+        
     def setup(self):
-        cfg = xaal.lib.tools.load_cfg_or_die(PACKAGE_NAME)['config']
+        cfg = self.cfg['config']
         rate = float(cfg['refresh'])
         self.engine.add_timer(self.process,rate)