diff options
Diffstat (limited to 'Demos/Device/LowLevel/AudioInput/AudioInput.c')
| -rw-r--r-- | Demos/Device/LowLevel/AudioInput/AudioInput.c | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/Demos/Device/LowLevel/AudioInput/AudioInput.c b/Demos/Device/LowLevel/AudioInput/AudioInput.c index 4abc17422..a984a2ab8 100644 --- a/Demos/Device/LowLevel/AudioInput/AudioInput.c +++ b/Demos/Device/LowLevel/AudioInput/AudioInput.c @@ -1,7 +1,7 @@ /* LUFA Library Copyright (C) Dean Camera, 2010. - + dean [at] fourwalledcubicle [dot] com www.fourwalledcubicle.com */ @@ -9,13 +9,13 @@ /* Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) - Permission to use, copy, modify, distribute, and sell this + Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted - without fee, provided that the above copyright notice appear in + without fee, provided that the above copyright notice appear in all copies and that both that the copyright notice and this - permission notice and warranty disclaimer appear in supporting - documentation, and that the name of the author not be used in - advertising or publicity pertaining to distribution of the + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the software without specific, written prior permission. The author disclaim all warranties with regard to this @@ -48,7 +48,7 @@ int main(void) LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); sei(); - + for (;;) { USB_Audio_Task(); @@ -65,13 +65,13 @@ void SetupHardware(void) /* Disable clock division */ clock_prescale_set(clock_div_1); - + /* Hardware Initialization */ LEDs_Init(); ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_32); ADC_SetupChannel(MIC_IN_ADC_CHANNEL); USB_Init(); - + /* Start the ADC conversion in free running mode */ ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | MIC_IN_ADC_MUX_MASK); } @@ -133,7 +133,7 @@ void EVENT_USB_Device_UnhandledControlRequest(void) /* Set Interface is not handled by the library, as its function is application-specific */ if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE)) { - Endpoint_ClearSETUP(); + Endpoint_ClearSETUP(); Endpoint_ClearStatusStage(); /* Check if the host is enabling the audio interface (setting AlternateSetting to 1) */ @@ -157,7 +157,7 @@ void USB_Audio_Task(void) /* Select the audio stream endpoint */ Endpoint_SelectEndpoint(AUDIO_STREAM_EPNUM); - + /* Check if the current endpoint can be written to and that the next sample should be stored */ if (Endpoint_IsINReady() && (TIFR0 & (1 << OCF0A))) { @@ -166,7 +166,7 @@ void USB_Audio_Task(void) /* Audio sample is ADC value scaled to fit the entire range */ int16_t AudioSample = ((SAMPLE_MAX_RANGE / ADC_MAX_RANGE) * ADC_GetResult()); - + #if defined(MICROPHONE_BIASED_TO_HALF_RAIL) /* Microphone is biased to half rail voltage, subtract the bias from the sample value */ AudioSample -= (SAMPLE_MAX_RANGE / 2); @@ -183,3 +183,4 @@ void USB_Audio_Task(void) } } } + |