diff options
Diffstat (limited to 'Demos/Device/AudioInput/AudioInput.c')
| -rw-r--r-- | Demos/Device/AudioInput/AudioInput.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/Demos/Device/AudioInput/AudioInput.c b/Demos/Device/AudioInput/AudioInput.c index bcfb04be1..31b3159e0 100644 --- a/Demos/Device/AudioInput/AudioInput.c +++ b/Demos/Device/AudioInput/AudioInput.c @@ -28,16 +28,29 @@ this software.
*/
+/** \file
+ *
+ * Main source file for the AudioInput demo. This file contains the main tasks of
+ * the demo and is responsible for the initial application hardware configuration.
+ */
+
#include "AudioInput.h"
+/** LUFA Audio Class driver interface configuration and state information. This structure is
+ * passed to all Audio Class driver functions, so that multiple instances of the same class
+ * within a device can be differentiated from one another.
+ */
USB_ClassInfo_Audio_t Microphone_Audio_Interface =
{
- .InterfaceNumber = 0,
+ .StreamingInterfaceNumber = 1,
- .DataINEndpointNumber = AUDIO_STREAM_EPNUM,
- .DataINEndpointSize = AUDIO_STREAM_EPSIZE,
+ .DataINEndpointNumber = AUDIO_STREAM_EPNUM,
+ .DataINEndpointSize = AUDIO_STREAM_EPSIZE,
};
-
+
+/** Main program entry point. This routine contains the overall program flow, including initial
+ * setup of all components and the main program loop.
+ */
int main(void)
{
SetupHardware();
@@ -53,6 +66,7 @@ int main(void) }
}
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
/* Disable watchdog if enabled by bootloader/fuses */
@@ -72,6 +86,9 @@ void SetupHardware(void) ADC_StartReading(ADC_REFERENCE_AVCC | ADC_RIGHT_ADJUSTED | MIC_IN_ADC_CHANNEL);
}
+/** Processes the next audio sample by reading the last ADC conversion and writing it to the audio
+ * interface, each time the sample reload timer period elapses to give a constant sample rate.
+ */
void ProcessNextSample(void)
{
if ((TIFR0 & (1 << OCF0A)) && USB_Audio_IsReadyForNextSample(&Microphone_Audio_Interface))
@@ -90,6 +107,7 @@ void ProcessNextSample(void) }
}
+/** Event handler for the library USB Connection event. */
void EVENT_USB_Connect(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
@@ -100,6 +118,7 @@ void EVENT_USB_Connect(void) TCCR0B = (1 << CS00); // Fcpu speed
}
+/** Event handler for the library USB Disconnection event. */
void EVENT_USB_Disconnect(void)
{
/* Stop the sample reload timer */
@@ -108,6 +127,7 @@ void EVENT_USB_Disconnect(void) LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}
+/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_ConfigurationChanged(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_READY);
@@ -116,6 +136,7 @@ void EVENT_USB_ConfigurationChanged(void) LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
}
+/** Event handler for the library USB Unhandled Control Packet event. */
void EVENT_USB_UnhandledControlPacket(void)
{
USB_Audio_ProcessControlPacket(&Microphone_Audio_Interface);
|