Fix incorrect configuration in the ClassDriver AudioOutput demo.

Make all audio device Class Driver functions require a reference to the Audio class instance, so that the endpoint size can be checked (and to standardize the APIs).

Make LEDs more responsive in the AudioOutput device demos.

3 files changed, 13 insertions, 16 deletions

diff --git a/Demos/Device/ClassDriver/AudioOutput/AudioOutput.c b/Demos/Device/ClassDriver/AudioOutput/AudioOutput.c
index 9a63af68a..2caf6faa6 100644
--- a/Demos/Device/ClassDriver/AudioOutput/AudioOutput.c
+++ b/Demos/Device/ClassDriver/AudioOutput/AudioOutput.c
@@ -46,8 +46,8 @@ USB_ClassInfo_Audio_Device_t Speaker_Audio_Interface =
 			{

 				.StreamingInterfaceNumber = 1,

 

-				.DataINEndpointNumber     = AUDIO_STREAM_EPNUM,

-				.DataINEndpointSize       = AUDIO_STREAM_EPSIZE,

+				.DataOUTEndpointNumber    = AUDIO_STREAM_EPNUM,

+				.DataOUTEndpointSize      = AUDIO_STREAM_EPSIZE,

 			},

 	};

 

@@ -62,8 +62,7 @@ int main(void)
 	

 	for (;;)

 	{

-		if (Speaker_Audio_Interface.State.InterfaceEnabled)

-		  ProcessNextSample();

+		ProcessNextSample();

 

 		Audio_Device_USBTask(&Speaker_Audio_Interface);

 		USB_USBTask();

@@ -90,14 +89,15 @@ void SetupHardware(void)
  */

 void ProcessNextSample(void)

 {

+	/* Check if the sample reload timer period has elapsed, and that the USB bus is ready for a new sample */

 	if ((TIFR0 & (1 << OCF0A)) && Audio_Device_IsSampleReceived(&Speaker_Audio_Interface))

 	{

 		/* Clear the sample reload timer */

 		TIFR0 |= (1 << OCF0A);

 

 		/* Retrieve the signed 16-bit left and right audio samples */

-		int16_t LeftSample_16Bit  = (int16_t)Audio_Device_ReadSample16();

-		int16_t RightSample_16Bit = (int16_t)Audio_Device_ReadSample16();

+		int16_t LeftSample_16Bit  = Audio_Device_ReadSample16(&Speaker_Audio_Interface);

+		int16_t RightSample_16Bit = Audio_Device_ReadSample16(&Speaker_Audio_Interface);

 

 		/* Massage signed 16-bit left and right audio samples into signed 8-bit */

 		int8_t  LeftSample_8Bit   = (LeftSample_16Bit  >> 8);

@@ -124,16 +124,16 @@ void ProcessNextSample(void)
 		/* Make mixed sample value positive (absolute) */

 		MixedSample_8Bit = abs(MixedSample_8Bit);

 

-		if (MixedSample_8Bit > ((128 / 8) * 1))

+		if (MixedSample_8Bit > 2)

 		  LEDMask |= LEDS_LED1;

 		  

-		if (MixedSample_8Bit > ((128 / 8) * 2))

+		if (MixedSample_8Bit > 4)

 		  LEDMask |= LEDS_LED2;

 		  

-		if (MixedSample_8Bit > ((128 / 8) * 3))

+		if (MixedSample_8Bit > 8)

 		  LEDMask |= LEDS_LED3;

 

-		if (MixedSample_8Bit > ((128 / 8) * 4))

+		if (MixedSample_8Bit > 16)

 		  LEDMask |= LEDS_LED4;

 

 		LEDs_SetAllLEDs(LEDMask);

diff --git a/Demos/Device/ClassDriver/AudioOutput/AudioOutput.h b/Demos/Device/ClassDriver/AudioOutput/AudioOutput.h
index ea897c954..9846a7634 100644
--- a/Demos/Device/ClassDriver/AudioOutput/AudioOutput.h
+++ b/Demos/Device/ClassDriver/AudioOutput/AudioOutput.h
@@ -40,6 +40,7 @@
 		#include <avr/io.h>

 		#include <avr/wdt.h>

 		#include <avr/power.h>

+		#include <stdlib.h>

 

 		#include "Descriptors.h"

 		

diff --git a/Demos/Device/ClassDriver/AudioOutput/Descriptors.h b/Demos/Device/ClassDriver/AudioOutput/Descriptors.h
index bc894285c..a9b00a7e9 100644
--- a/Demos/Device/ClassDriver/AudioOutput/Descriptors.h
+++ b/Demos/Device/ClassDriver/AudioOutput/Descriptors.h
@@ -43,12 +43,8 @@
 		#include <avr/pgmspace.h>

 

 	/* Macros: */

-		#if defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR) || defined(__DOXYGEN__)

-			/** Endpoint number of the Audio isochronous streaming data endpoint. */

-			#define AUDIO_STREAM_EPNUM       1

-		#else

-			#define AUDIO_STREAM_EPNUM       3

-		#endif

+		/** Endpoint number of the Audio isochronous streaming data endpoint. */

+		#define AUDIO_STREAM_EPNUM           1

 		

 		/** Endpoint size in bytes of the Audio isochronous streaming data endpoint. The Windows audio stack requires

 		 *  at least 192 bytes for correct output, thus the smaller 128 byte maximum endpoint size on some of the smaller