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Make LowLevel AudioOutput demo work in the same way as the ClassDriver AudioOutput demo for LEDs output.

This commit is contained in:
Dean Camera 2009-07-28 10:49:33 +00:00
parent 61ff4824a9
commit 23c1653efe
1 changed files with 13 additions and 24 deletions
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37
Demos/Device/LowLevel/AudioOutput/AudioOutput.c
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@ -210,10 +210,10 @@ void USB_Audio_Task(void)
int8_t LeftSample_8Bit = (LeftSample_16Bit >> 8);
int8_t RightSample_8Bit = (RightSample_16Bit >> 8);
#if defined(AUDIO_OUT_MONO)
/* 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);
#if defined(AUDIO_OUT_MONO)
/* Load the sample into the PWM timer channel */
OCR3A = ((uint8_t)MixedSample_8Bit ^ (1 << 7));
#elif defined(AUDIO_OUT_STEREO)
@ -221,36 +221,25 @@ void USB_Audio_Task(void)
OCR3A = ((uint8_t)LeftSample_8Bit ^ (1 << 7));
OCR3B = ((uint8_t)RightSample_8Bit ^ (1 << 7));
#elif defined(AUDIO_OUT_PORTC)
/* 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);
/* Load the 8-bit mixed sample into PORTC */
PORTC = MixedSample_8Bit;
#else
uint8_t LEDMask = LEDS_NO_LEDS;
/* Make left channel positive (absolute) */
if (LeftSample_8Bit < 0)
LeftSample_8Bit = -LeftSample_8Bit;
/* Make mixed sample value positive (absolute) */
MixedSample_8Bit = abs(MixedSample_8Bit);
/* Make right channel positive (absolute) */
if (RightSample_8Bit < 0)
RightSample_8Bit = -RightSample_8Bit;
/* Set first LED based on sample value */
if (LeftSample_8Bit < ((128 / 8) * 1))
LEDMask |= LEDS_LED2;
else if (LeftSample_8Bit < ((128 / 8) * 3))
LEDMask |= (LEDS_LED1 | LEDS_LED2);
else
if (MixedSample_8Bit > ((128 / 8) * 1))
LEDMask |= LEDS_LED1;
/* Set second LED based on sample value */
if (RightSample_8Bit < ((128 / 8) * 1))
LEDMask |= LEDS_LED4;
else if (RightSample_8Bit < ((128 / 8) * 3))
LEDMask |= (LEDS_LED3 | LEDS_LED4);
else
if (MixedSample_8Bit > ((128 / 8) * 2))
LEDMask |= LEDS_LED2;
if (MixedSample_8Bit > ((128 / 8) * 3))
LEDMask |= LEDS_LED3;
if (MixedSample_8Bit > ((128 / 8) * 4))
LEDMask |= LEDS_LED4;
LEDs_SetAllLEDs(LEDMask);
#endif