#include <stdio.h>
#include "usart.h"
#include "conf_usb.h"
#include "board.h"
#include "controller.h"
#include "usb_drv.h"
#include "usb_descriptors.h"
#include "usb_standard_request.h"
#include "device_audio_task.h"
#include "usb_stream_player.h"
#include "audio_example.h"
#include "et024006dhu.h"
#include "cycle_counter.h"
#include "debug.h"
#include "avr32_logo.h"
#include "microphone_samples.h"

Macros
#define	FONT_HEIGHT 14

#define	START_Y_DEMO_TEXT 33

#define	TIMER_MMI 1000

#define	TIMER_STARTUP 100

Functions
void	device_audio_task (void)
	Entry point of the device Audio task management. More...

void	device_audio_task_init (void)
	This function initializes the hardware/software resources required for device Audio task. More...

static void	display_box (uint32_t x, uint32_t y, uint32_t size_x, uint32_t size_y, uint16_t color, uint16_t edge_color)
	This function displays a box on the LCD. More...

static void	mmi_activity_display (bool init, uint32_t fifo_cnt)
	This function displays the a bargraph indicating the state of the audio buffers and the PPM deviation between the incoming USB audio sampling frequency and the output DAC sampling frequency. More...

static void	mmi_display (void)
	This function displays the MMI interface and some static informations. More...

void	usb_sof_action (void)
	usb_sof_action More...

Variables
uint8_t *	__bss_start

uint8_t *	_data

uint8_t *	_edata

uint8_t *	_estack

uint8_t *	_stack

static uint32_t	dat_sample_index

device_audio_task_data_t *	device_audio_task_data = NULL

uint8_t *	end

static uint32_t	mmi_state =0

bool	mute
	Public : (bit) mute mute is set to true when ACTIVE mute is set to false otherwise /. More...

static uint16_t	sof_cnt

t_cpu_time	timer

int16_t	volume
	Public : (int16_t) volume volume represents the current volume of audio stream /. More...

#define FONT_HEIGHT 14

Referenced by mmi_activity_display(), and mmi_display().

#define START_Y_DEMO_TEXT 33

Referenced by mmi_activity_display(), and mmi_display().

#define TIMER_MMI 1000

Referenced by mmi_activity_display().

#define TIMER_STARTUP 100

Referenced by mmi_display().

void device_audio_task ( void )

Entry point of the device Audio task management.

References audio_mixer_dacs_input, dat_sample_index, EP_AUDIO_IN, EP_AUDIO_OUT, EP_SIZE_IN, Is_device_enumerated, is_joystick_pressed(), Is_usb_out_received, Is_usb_write_enabled, LED0, LED_On(), LED_Set_Intensity(), mmi_activity_display(), mmi_display(), mmi_state, mute, sample_sound, SAMPLE_SOUND_LEN, Usb_ack_in_ready_send, Usb_ack_out_received_free, Usb_reset_endpoint_fifo_access, USB_STREAM_DEVICE, usb_stream_input(), usb_stream_resync(), and Usb_write_endpoint_data.

Referenced by device_audio_task_init(), and main().

void device_audio_task_init ( void )

This function initializes the hardware/software resources required for device Audio task.

References dat_sample_index, device_audio_task(), Is_usb_device, player_init(), sof_cnt, SPEAKER_FREQUENCY, Usb_enable_sof_interrupt, and usb_stream_init().

Referenced by main().

static void display_box	(	uint32_t	x,
		uint32_t	y,
		uint32_t	size_x,
		uint32_t	size_y,
		uint16_t	color,
		uint16_t	edge_color
	)

static

This function displays a box on the LCD.

References et024006_DrawFilledRect(), et024006_DrawHorizLine(), and et024006_DrawVertLine().

Referenced by mmi_activity_display().

static void mmi_activity_display	(	bool	init,
		uint32_t	fifo_cnt
	)

static

This function displays the a bargraph indicating the state of the audio buffers and the PPM deviation between the incoming USB audio sampling frequency and the output DAC sampling frequency.

References BLACK, BLUE, BLUE_LEV, cpu_is_timeout(), cpu_ms_2_cy(), cpu_set_timeout(), display_box(), et024006_DrawFilledRect(), et024006_PrintString(), FCPU_HZ, FONT8x8, FONT_HEIGHT, get_heap_curr_used_size(), get_heap_free_size(), get_heap_total_used_size(), START_Y_DEMO_TEXT, TIMER_MMI, USB_STREAM_BUFFER_NUMBER, usb_stream_ppm_get(), and WHITE.