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Added debugging and error handling to get_monitor_brightness

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Jeremy Karst 2025-08-12 20:17:23 -04:00
parent 953a64459a
commit 750758ba84
1 changed files with 21 additions and 3 deletions
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24
monitors.py
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@ -126,16 +126,34 @@ class BatteryMonitor:
def get_monitor_brightness():
"""
Gets the brightness of the main laptop display so that we can scale the LED Matrix
brightness to match. Handles operating system or configuration specific logic to
retrieve the brightness value.
Returns:
A value between 0.0 and 1.0 which is scaled to the monitor's brightness
"""
brightness_value = 1.0
try:
if os.name == 'nt':
return wmi.WMI(namespace='wmi').WmiMonitorBrightness()[0].CurrentBrightness / 100.0
else:
try: # First try the dGPU brightness
return int(open('/sys/class/backlight/amdgpu_bl2/brightness', 'r').read()) / 255.0
brightness_value = int(open('/sys/class/backlight/amdgpu_bl2/brightness', 'r').read()) / 255.0
except: # If that doesn't work, try the iGPU brightness
return int(open('/sys/class/backlight/amdgpu_bl1/brightness', 'r').read()) / 255.0
brightness_value = int(open('/sys/class/backlight/amdgpu_bl1/brightness', 'r').read()) / 255.0
except Exception as e:
return 1.0
print(f"Error in get_monitor_brightness(): {e}")
if brightness_value < 0.0:
print(f"Invalid brightness value returned by get_monitor_brightness(): {brightness_value}")
brightness_value = 0.0
elif brightness_value > 1.0:
print(f"Invalid brightness value returned by get_monitor_brightness(): {brightness_value}")
brightness_value = 1.0
return brightness_value
if __name__ == "__main__":
print(get_monitor_brightness())