Handling keyboard interrupt

README.md

@@ -1,7 +1,7 @@
 # viatom-ble
-Python script to read sensor values over BLE from Viatom ring oxygen (SpO2) monitors.
+Python script to read sensor values over BLE from Viatom wearable ring oxygen (SpO2) monitors.
 
-Reads values once every 2 second and logs to console or log file. Also publishes values to an MQTT broker if configured.
+Reads values once every 2 second and logs to console or log file. Also publishes values to an MQTT broker if so configured.
 
 ## Compatability
 Tested against a Viatom model PO3 (Wellue KidsO2) during development.
@@ -16,9 +16,9 @@ sudo pip install blueply
 sudo pip install paho-mqtt
 ```
 
-Scan devices while wearing the device to determine it's BLE address.
+Scan while wearing the device to determine it's BLE address.
 
-*Note: Be sure the device is not connected to any other monitor (ie the mobile app) before scanning.*
+*Note: Ensure the device is not connected to any other monitor (ie the mobile app) before scanning.*
 
 ```
 sudo python viatom-ble.py -s
@@ -32,7 +32,7 @@ Optionally also configure the MQTT client by enering values for the `mqtt_*` var
 
 Test BLE connectivity while wearing the device.
 
-*Note: Warnings and exceptions from the MQTT client can be ignored if it has not been confgured yet.
+*Note: Warnings and exceptions from the MQTT client can be ignored if it has not been confgured yet.*
 
 ```
 python viatom-ble.py -v -c

viatom-ble.py

@@ -101,7 +101,7 @@ def ble_scan():
 
     # ble config params
     # ble address of device
-    ble_address = ""
+    ble_address = "f3:ce:82:50:0c:a5"
     ble_type = btle.ADDR_TYPE_RANDOM
     # seconds to wait between reads
     ble_read_period = 2
@@ -246,9 +246,25 @@ def ble_scan():
         except IOError as e:
             logger.error("IOError: " + str(e))
 
-        logger.info("BLE: Waiting " + str(ble_next_reconnect_delay) + " seconds to reconnect...")
-        time.sleep(ble_next_reconnect_delay);
-        ble_next_reconnect_delay = ble_reconnect_delay
+        except KeyboardInterrupt:
+            logger.info("KeyboardInterrupt, exiting")
+            sys.exit()
+
+        except:
+            e = sys.exc_info()[0]
+            logger.error("Exception: " + str(e))
+
+        try:
+            logger.info("BLE: Waiting " + str(ble_next_reconnect_delay) + " seconds to reconnect...")
+            time.sleep(ble_next_reconnect_delay);
+            ble_next_reconnect_delay = ble_reconnect_delay
+        except KeyboardInterrupt:
+            logger.info("KeyboardInterrupt, exiting")
+            sys.exit()
+        except:
+            e = sys.exc_info()[0]
+            logger.error("Exception: " + str(e))
+
 
     logger.info("Exiting...")
     client.loop_stop()