improved logging with timestamps (instead of print)

[EVA-2020-02-2.git] / examples / luftdaten.py

diff --git a/examples/luftdaten.py b/examples/luftdaten.py
index 4d3d49acd87a86dae17d79f51981f67d75fc261a..dd6e967708664f4e3be22233904f576f2ea3c240 100755 (executable)
--- a/examples/luftdaten.py
+++ b/examples/luftdaten.py
@@ -12,7 +12,14 @@ try:
 except ImportError:
     from smbus import SMBus
 
-print("""luftdaten.py - Reads temperature, pressure, humidity,
+import logging
+
+logging.basicConfig(
+    format='%(asctime)s.%(msecs)03d %(levelname)-8s %(message)s',
+    level=logging.INFO,
+    datefmt='%Y-%m-%d %H:%M:%S')
+
+logging.info("""luftdaten.py - Reads temperature, pressure, humidity,
 PM2.5, and PM10 from Enviro plus and sends data to Luftdaten,
 the citizen science air quality project.
 
@@ -71,7 +78,7 @@ def read_values():
 
 # Get CPU temperature to use for compensation
 def get_cpu_temperature():
-    process = Popen(['vcgencmd', 'measure_temp'], stdout=PIPE)
+    process = Popen(['vcgencmd', 'measure_temp'], stdout=PIPE, universal_newlines=True)
     output, _error = process.communicate()
     return float(output[output.index('=') + 1:output.rindex("'")])
 
@@ -162,16 +169,16 @@ font_size = 16
 font = ImageFont.truetype("fonts/Asap/Asap-Bold.ttf", font_size)
 
 # Display Raspberry Pi serial and Wi-Fi status
-print("Raspberry Pi serial: {}".format(get_serial_number()))
-print("Wi-Fi: {}\n".format("connected" if check_wifi() else "disconnected"))
+logging.info("Raspberry Pi serial: {}".format(get_serial_number()))
+logging.info("Wi-Fi: {}\n".format("connected" if check_wifi() else "disconnected"))
 
 # Main loop to read data, display, and send to Luftdaten
 while True:
     try:
         values = read_values()
-        print(values)
+        logging.info(values)
         resp = send_to_luftdaten(values, id)
-        print("Response: {}\n".format("ok" if resp else "failed"))
+        logging.info("Response: {}\n".format("ok" if resp else "failed"))
         display_status()
     except Exception as e:
-        print(e)
+        logging.info(e)