X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/23c1653efe58d436504c01438133c1ef7b3f8fbc..6f4cc344ab47b720651e5bbf7674951c32e210b1:/Demos/Device/LowLevel/AudioOutput/AudioOutput.c

diff --git a/Demos/Device/LowLevel/AudioOutput/AudioOutput.c b/Demos/Device/LowLevel/AudioOutput/AudioOutput.c
index 2b2cdcbbf..7dde84bb3 100644
--- a/Demos/Device/LowLevel/AudioOutput/AudioOutput.c
+++ b/Demos/Device/LowLevel/AudioOutput/AudioOutput.c
@@ -30,7 +30,7 @@
 
 /** \file
  *
- *  Main source file for the Audio Output demo. This file contains the main tasks of the demo and
+ *  Main source file for the AudioOutput demo. This file contains the main tasks of the demo and
  *  is responsible for the initial application hardware configuration.
  */
  
@@ -213,6 +213,9 @@ void USB_Audio_Task(void)
 		/* Mix the two channels together to produce a mono, 8-bit sample */
 		int8_t  MixedSample_8Bit  = (((int16_t)LeftSample_8Bit + (int16_t)RightSample_8Bit) >> 1);
 
+		/* Get absolute value of mixed sample value */
+		uint8_t MixedSample_8Bit_Abs = abs(MixedSample_8Bit);
+
 #if defined(AUDIO_OUT_MONO)
 		/* Load the sample into the PWM timer channel */
 		OCR3A = ((uint8_t)MixedSample_8Bit ^ (1 << 7));
@@ -223,25 +226,22 @@ void USB_Audio_Task(void)
 #elif defined(AUDIO_OUT_PORTC)
 		/* Load the 8-bit mixed sample into PORTC */
 		PORTC = MixedSample_8Bit;
-#else
-		uint8_t LEDMask = LEDS_NO_LEDS;
+#endif
 
-		/* Make mixed sample value positive (absolute) */
-		MixedSample_8Bit = abs(MixedSample_8Bit);
+		uint8_t LEDMask = LEDS_NO_LEDS;
 
-		if (MixedSample_8Bit > ((128 / 8) * 1))
+		if (MixedSample_8Bit_Abs > 2)
 		  LEDMask |= LEDS_LED1;
 		  
-		if (MixedSample_8Bit > ((128 / 8) * 2))
+		if (MixedSample_8Bit_Abs > 4)
 		  LEDMask |= LEDS_LED2;
 		  
-		if (MixedSample_8Bit > ((128 / 8) * 3))
+		if (MixedSample_8Bit_Abs > 8)
 		  LEDMask |= LEDS_LED3;
 
-		if (MixedSample_8Bit > ((128 / 8) * 4))
+		if (MixedSample_8Bit_Abs > 16)
 		  LEDMask |= LEDS_LED4;
 		  
 		LEDs_SetAllLEDs(LEDMask);
-#endif
 	}
 }