FIX: better settings

settings.yaml

-# server's full base address for sendind requests (must end with /)
-BASE_URL: http://localhost:5000/
+# server's full base address for sendind requests
+BASE_URL: http://dados.cta.if.ufrgs.bt/emm
 
+# valid board ID to which data will be sent
 BOARD_ID: 2
 
+# list of sensors that will be 
 SENSORS:
-    - nickname: DHT22_TEMP
-      data_format: FLOAT
-
-    - nickname: DHT22_AH
-      data_format: FLOAT
-
-    - nickname: BMP085_PRESSURE
-      data_format: INTEGER
-
-    - nickname: LDR
-      data_format: FLOAT
+    - {nickname: DHT22_TEMP,      data_format: FLOAT}
+    - {nickname: DHT22_AH,        data_format: FLOAT}
+    - {nickname: BMP085_PRESSURE, data_format: INTEGER}
+    - {nickname: LDR,             data_format: FLOAT}
 
+# comma-separated list of USB ports that may have the Arduino plugged in 
 SERIAL_PORT: /dev/ttyACM0, /dev/ttyACM1
+
+# Arduino serial communication protocol (same as meteorolog/meteorolog.ino)
 BAUD_RATE: 9600     # 115200 seems unstable with Uno + PySerial
 
+# time to sleep between readings
 READING_INTERVAL_SECONDS: 5
 
+# CSV delimiter to be used on the file DATA_LOG_FILENAME
 EXPORT_CSV_SEP: '\t'
+
+# file which will hold all data locally (regardless of the web server)
 DATA_LOG_FILENAME: datalog.csv
+
+# temp file that hold data when server is off and will be sent when on
 SERVER_OUTGOING_DATA_LOG_FILENAME: outgoing.json