X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/fb76acb0844a2528c32610455a8c7cd5266f3027..0210fa5648b1ed65caa384f966ac40b4ecc489ae:/Demos/Device/LowLevel/AudioOutput/AudioOutput.c

diff --git a/Demos/Device/LowLevel/AudioOutput/AudioOutput.c b/Demos/Device/LowLevel/AudioOutput/AudioOutput.c
index 6e7d818fb..22cfac4d9 100644
--- a/Demos/Device/LowLevel/AudioOutput/AudioOutput.c
+++ b/Demos/Device/LowLevel/AudioOutput/AudioOutput.c
@@ -1,13 +1,13 @@
 /*
              LUFA Library
-     Copyright (C) Dean Camera, 2010.
+     Copyright (C) Dean Camera, 2011.
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
-  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted
@@ -37,7 +37,8 @@
 #include "AudioOutput.h"
 
 /** Flag to indicate if the streaming audio alternative interface has been selected by the host. */
-bool StreamingAudioInterfaceSelected = false;
+static bool StreamingAudioInterfaceSelected = false;
+
 
 /** Main program entry point. This routine contains the overall program flow, including initial
  *  setup of all components and the main program loop.
@@ -80,7 +81,7 @@ void EVENT_USB_Device_Connect(void)
 
 	/* Sample reload timer initialization */
 	TIMSK0 = (1 << OCIE0A);
-	OCR0A  = (F_CPU / 8 / AUDIO_SAMPLE_FREQUENCY) - 1;
+	OCR0A  = ((F_CPU / 8 / AUDIO_SAMPLE_FREQUENCY) - 1);
 	TCCR0A = (1 << WGM01);  // CTC mode
 	TCCR0B = (1 << CS01);   // Fcpu/8 speed
 
@@ -168,6 +169,15 @@ void EVENT_USB_Device_ControlRequest(void)
 			}
 
 			break;
+		case AUDIO_REQ_GetStatus:
+			/* Get Status request can be directed at either the interface or endpoint, neither is currently used
+			 * according to the latest USB Audio 1.0 standard, but must be ACKed with no data when requested */
+			if ((USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) ||
+			    (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT)))
+			{
+				Endpoint_ClearSETUP();
+				Endpoint_ClearStatusStage();
+			}
 	}
 }
 
@@ -183,8 +193,8 @@ ISR(TIMER0_COMPA_vect, ISR_BLOCK)
 	if (Endpoint_IsOUTReceived() && StreamingAudioInterfaceSelected)
 	{
 		/* Retrieve the signed 16-bit left and right audio samples, convert to 8-bit */
-		int8_t LeftSample_8Bit   = ((int16_t)Endpoint_Read_Word_LE() >> 8);
-		int8_t RightSample_8Bit  = ((int16_t)Endpoint_Read_Word_LE() >> 8);
+		int8_t LeftSample_8Bit   = ((int16_t)Endpoint_Read_16_LE() >> 8);
+		int8_t RightSample_8Bit  = ((int16_t)Endpoint_Read_16_LE() >> 8);
 
 		/* 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);