diff options
Diffstat (limited to 'Demos/Device/ClassDriver/AudioOutput/AudioOutput.c')
| -rw-r--r-- | Demos/Device/ClassDriver/AudioOutput/AudioOutput.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/Demos/Device/ClassDriver/AudioOutput/AudioOutput.c b/Demos/Device/ClassDriver/AudioOutput/AudioOutput.c index 2caf6faa6..9a8804a45 100644 --- a/Demos/Device/ClassDriver/AudioOutput/AudioOutput.c +++ b/Demos/Device/ClassDriver/AudioOutput/AudioOutput.c @@ -103,10 +103,11 @@ void ProcessNextSample(void) int8_t LeftSample_8Bit = (LeftSample_16Bit >> 8);
int8_t RightSample_8Bit = (RightSample_16Bit >> 8);
-#if !defined(AUDIO_OUT_STEREO)
/* 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);
-#endif
+
+ /* 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 */
@@ -118,26 +119,23 @@ void ProcessNextSample(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 > 2)
+ if (MixedSample_8Bit_Abs > 2)
LEDMask |= LEDS_LED1;
- if (MixedSample_8Bit > 4)
+ if (MixedSample_8Bit_Abs > 4)
LEDMask |= LEDS_LED2;
- if (MixedSample_8Bit > 8)
+ if (MixedSample_8Bit_Abs > 8)
LEDMask |= LEDS_LED3;
- if (MixedSample_8Bit > 16)
+ if (MixedSample_8Bit_Abs > 16)
LEDMask |= LEDS_LED4;
LEDs_SetAllLEDs(LEDMask);
-#endif
}
}
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