Minor documentation improvements.
[pub/USBasp.git] / Demos / Host / ClassDriver / AudioOutputHost / AudioOutputHost.c
index c43b3ab..783b0a5 100644 (file)
@@ -1,13 +1,13 @@
 /*
              LUFA Library
-     Copyright (C) Dean Camera, 2011.
+     Copyright (C) Dean Camera, 2012.
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
-  Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2012  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
@@ -81,11 +81,11 @@ ISR(TIMER0_COMPA_vect, ISR_BLOCK)
                #if defined(USE_TEST_TONE)
                        static uint8_t SquareWaveSampleCount;
                        static int16_t CurrentWaveValue;
-                       
+
                        /* In test tone mode, generate a square wave at 1/256 of the sample rate */
                        if (SquareWaveSampleCount++ == 0xFF)
                          CurrentWaveValue ^= 0x8000;
-                       
+
                        /* Only generate audio if the board button is being pressed */
                        AudioSample = (Buttons_GetStatus() & BUTTONS_BUTTON1) ? CurrentWaveValue : 0;
                #else
@@ -97,11 +97,11 @@ ISR(TIMER0_COMPA_vect, ISR_BLOCK)
                        AudioSample -= (SAMPLE_MAX_RANGE / 2);
                        #endif
                #endif
-               
-               Audio_Host_WriteSample16(&Speaker_Audio_Interface, AudioSample);        
+
+               Audio_Host_WriteSample16(&Speaker_Audio_Interface, AudioSample);
                Audio_Host_WriteSample16(&Speaker_Audio_Interface, AudioSample);
        }
-       
+
        Pipe_SelectPipe(PrevPipe);
 }
 
@@ -182,9 +182,10 @@ void EVENT_USB_Host_DeviceEnumerationComplete(void)
        {
                puts_P(PSTR("Error Enabling Audio Stream.\r\n"));
                LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+               USB_Host_SetDeviceConfiguration(0);
                return;
        }
-       
+
        USB_Audio_SampleFreq_t SampleRate = AUDIO_SAMPLE_FREQ(48000);
        if (Audio_Host_GetSetEndpointProperty(&Speaker_Audio_Interface, Speaker_Audio_Interface.Config.DataOUTPipeNumber,
                                              AUDIO_REQ_SetCurrent, AUDIO_EPCONTROL_SamplingFreq,
@@ -192,6 +193,7 @@ void EVENT_USB_Host_DeviceEnumerationComplete(void)
        {
                puts_P(PSTR("Error Setting Audio Sampling Frequency.\r\n"));
                LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+               USB_Host_SetDeviceConfiguration(0);
                return;
        }