set speaker and mic volume on startup

whisplay_interface.py

@@ -1,3 +1,4 @@
+import subprocess
 import time
 import threading
 import runtime.whisplay_client
@@ -22,6 +23,8 @@ class WhisplayInterface:
         self._prev_is_pressed = False
         self._prev_press_end = None
 
+        self.set_wm8960_volume_stable(speaker=250, mic=30)
+
     # -- Properties --
 
     @property
@@ -111,3 +114,14 @@ class WhisplayInterface:
             self._button_is_long_pressed = False
 
         self._prev_is_pressed = is_pressed
+
+    def set_wm8960_volume_stable(self, speaker: int = 0, mic: int = 0):
+        CARD_NAME = 'wm8960soundcard'
+        DEVICE_ARG = f'hw:{CARD_NAME}'
+        try:
+            subprocess.run(['amixer', '-D', DEVICE_ARG, 'sset', 'Speaker',
+                            str(speaker)], check=False, capture_output=True)
+            subprocess.run(['amixer', '-D', DEVICE_ARG, 'sset',
+                            'Capture', str(mic)], check=False, capture_output=True)
+        except Exception as e:
+            print(f"ERROR: Failed to set volume: {e}")