X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/c5eeedd522c12c8b4996594f3c4167393d0af7ff..bbf89d81fa225fedc5ab1190ebfa8c775612178c:/Demos/Device/ClassDriver/AudioOutput/AudioOutput.c?ds=inline 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 } }