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[pub/USBasp.git] / Demos / Device / LowLevel / AudioInput / AudioInput.c

diff --git a/Demos/Device/LowLevel/AudioInput/AudioInput.c b/Demos/Device/LowLevel/AudioInput/AudioInput.c
index 52fbb8b..ff165b2 100644 (file)
--- a/Demos/Device/LowLevel/AudioInput/AudioInput.c
+++ b/Demos/Device/LowLevel/AudioInput/AudioInput.c
@@ -163,16 +163,16 @@ void EVENT_USB_Device_ControlRequest(void)
                                /* Extract out the relevant request information to get the target Endpoint address and control being set */
                                uint8_t EndpointAddress = (uint8_t)USB_ControlRequest.wIndex;
                                uint8_t EndpointControl = (USB_ControlRequest.wValue >> 8);
-                               
+
                                /* Only handle SET CURRENT requests to the audio endpoint's sample frequency property */
                                if ((EndpointAddress == (ENDPOINT_DIR_IN | AUDIO_STREAM_EPNUM)) && (EndpointControl == AUDIO_EPCONTROL_SamplingFreq))
                                {
                                        uint8_t SampleRate[3];
-                               
+
                                        Endpoint_ClearSETUP();
                                        Endpoint_Read_Control_Stream_LE(SampleRate, sizeof(SampleRate));
                                        Endpoint_ClearIN();
-                                       
+
                                        /* Set the new sampling frequency to the value given by the host */
                                        CurrentAudioSampleFrequency = (((uint32_t)SampleRate[2] << 16) | ((uint32_t)SampleRate[1] << 8) | (uint32_t)SampleRate[0]);
 
@@ -180,7 +180,7 @@ void EVENT_USB_Device_ControlRequest(void)
                                        OCR0A = ((F_CPU / 8 / CurrentAudioSampleFrequency) - 1);
                                }
                        }
-                       
+
                        break;
                case AUDIO_REQ_GetCurrent:
                        if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))
@@ -188,20 +188,20 @@ void EVENT_USB_Device_ControlRequest(void)
                                /* Extract out the relevant request information to get the target Endpoint address and control being retrieved */
                                uint8_t EndpointAddress = (uint8_t)USB_ControlRequest.wIndex;
                                uint8_t EndpointControl = (USB_ControlRequest.wValue >> 8);
-                               
+
                                /* Only handle GET CURRENT requests to the audio endpoint's sample frequency property */
                                if ((EndpointAddress == (ENDPOINT_DIR_IN | AUDIO_STREAM_EPNUM)) && (EndpointControl == AUDIO_EPCONTROL_SamplingFreq))
                                {
                                        uint8_t SampleRate[3];
-                                       
+
                                        /* Convert the sampling rate value into the 24-bit format the host expects for the property */
                                        SampleRate[2] = (CurrentAudioSampleFrequency >> 16);
                                        SampleRate[1] = (CurrentAudioSampleFrequency >> 8);
                                        SampleRate[0] = (CurrentAudioSampleFrequency &  0xFF);
-                               
+
                                        Endpoint_ClearSETUP();
                                        Endpoint_Write_Control_Stream_LE(SampleRate, sizeof(SampleRate));
-                                       Endpoint_ClearOUT();                                    
+                                       Endpoint_ClearOUT();
                                }
                        }
 
@@ -225,11 +225,11 @@ 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
@@ -239,7 +239,7 @@ ISR(TIMER0_COMPA_vect, ISR_BLOCK)
                        #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);
-                       #endif          
+                       #endif
                #endif
 
                /* Write the sample to the buffer */