Implemented platform specific stuff

src/sensor/soundsensor.py

@@ -1,5 +1,8 @@
 #!/usr/bin/env python3
+from typing import Optional
 from .abcsensor import AbcSensor
+from utils import config
+from birbnetes_iot_platform_raspberry import BirbnetesIoTPlatformRecordDriver
 
 """
 Sound sensor high level API
@@ -15,11 +18,17 @@ class SoundSensor(AbcSensor):
     """
     SoundSensor class. Responsible for sound retrieval from any microphones present.
     """
-    def getvalue(self) -> str:
+
+    def __init__(self):
+        BirbnetesIoTPlatformRecordDriver.init(config.SAMPLE_LENGTH)
+
+    def getvalue(self) -> Optional[str]:
         """
-        Retrieve a 5 second sound clip from a microphone.
+        Retrieve a configurable length second sound clip from a microphone.
         :return:
         """
-        # Recieve sound from microphone and save it to a file on the filesystem.
-        # Then return the filename
-        return "filename.wav"
+        return BirbnetesIoTPlatformRecordDriver.get_recording(False)
+
+    def __del__(self):
+        # In theory you should not put anything to __del__ as it is not guaranteed to be called.
+        BirbnetesIoTPlatformRecordDriver.cleanup()