#include "conf_usb.h"
#include "debug.h"
#include "board.h"
#include "usb_drv.h"
#include "usb_host_enum.h"
#include "usb_host_task.h"
#include "usb_audio.h"
#include "host_audio_task.h"
#include <stdio.h>
#include "usb_stream_player.h"
#include "et024006dhu.h"
#include "cycle_counter.h"
#include "avr32_logo.h"
#include "audio_example.h"

Macros
#define	FONT_HEIGHT 14

#define	START_Y_DEMO_TEXT 33

#define	TIMER_MMI 1000

#define	TIMER_STARTUP 100

Functions
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...

uint16_t	host_audio_get_max (uint16_t unit, uint16_t channel_number)
	This function returns the 'MAX setting' feature of a particular unit. More...

void	host_audio_set_alt_interface (void)

void	host_audio_set_cur (uint16_t unit, uint16_t channel_number, uint16_t cur)
	This function set the 'current setting' feature of a particular unit. More...

void	host_audio_set_cur_mute (uint16_t unit, bool cs_mute)
	This function controls the Mute feature of a particular unit. More...

void	host_audio_task (void)
	This function manages the host audio task. More...

void	host_audio_task_init (void)
	This function initializes the host audio task. More...

void	host_audio_task_shutdown (void)
	This function shuts the host audio task down. More...

void	host_set_sampling_rate (uint16_t endpoint, uint32_t sampling_rate)
	This function selects one of the sampling rate of the streaming interface. More...

void	host_sof_action (void)
	host_sof_action 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...

Variables
uint8_t *	__bss_start

uint8_t *	__heap_end__

uint8_t *	__heap_start__

uint8_t *	_data

uint8_t *	_edata

uint8_t *	_estack

uint8_t *	_stack

volatile bool	audio_connected = false

volatile uint8_t	audio_cpt_sof

volatile bool	audio_new_device_connected = false

uint8_t *	end

host_audio_task_data_t *	host_audio_task_data = NULL

uint8_t	interf_audio_stream

static uint32_t	mmi_state =0

uint8_t	pipe_audio_in

static uint16_t	sof_cnt

t_cpu_time	timer

#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().

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().

uint16_t host_audio_get_max	(	uint16_t	unit,
		uint16_t	channel_number
	)

This function returns the 'MAX setting' feature of a particular unit.

References S_usb_setup_data::bmRequestType, BR_REQUEST_GET_MAX, S_usb_setup_data::bRequest, CS_VOLUME, data_stage, host_transfer_control(), S_usb_setup_data::incomplete_read, LSB, max, MSB, usb_request, S_usb_setup_data::wIndex, S_usb_setup_data::wLength, and S_usb_setup_data::wValue.

Referenced by host_audio_task().

void host_audio_set_alt_interface ( void )

References host_set_interface, and host_audio_task_data_t::interf_audio_stream.

Referenced by host_audio_task().

void host_audio_set_cur	(	uint16_t	unit,
		uint16_t	channel_number,
		uint16_t	cur
	)

This function set the 'current setting' feature of a particular unit.

References S_usb_setup_data::bmRequestType, BR_REQUEST_SET_CUR, S_usb_setup_data::bRequest, CS_VOLUME, data_stage, host_transfer_control(), S_usb_setup_data::incomplete_read, LSB, MSB, usb_request, S_usb_setup_data::wIndex, S_usb_setup_data::wLength, and S_usb_setup_data::wValue.

Referenced by host_audio_task().

void host_audio_set_cur_mute	(	uint16_t	unit,
		bool	cs_mute
	)

This function controls the Mute feature of a particular unit.

References S_usb_setup_data::bmRequestType, BR_REQUEST_SET_CUR, S_usb_setup_data::bRequest, CS_MUTE, data_stage, host_transfer_control(), S_usb_setup_data::incomplete_read, usb_request, S_usb_setup_data::wIndex, S_usb_setup_data::wLength, and S_usb_setup_data::wValue.

Referenced by host_audio_task().

void host_audio_task ( void )

This function manages the host audio task.

References AUDIO_CLASS, audio_connected, audio_new_device_connected, AUDIOSTREAMING_SUBCLASS, cs_feature_unit_t::bmaControls, host_audio_task_data_t::g_cs_feature, host_audio_task_data_t::g_cs_num_features_unit, host_audio_task_data_t::g_n_bits_per_sample, host_audio_task_data_t::g_n_channels, host_audio_task_data_t::g_sample_freq, Get_class, Get_ep_pipe, Get_interface_number, Get_nb_ep, Get_nb_supported_interface, Get_subclass, Host_ack_in_received, Host_ack_nak_received, host_audio_get_max(), host_audio_set_alt_interface(), host_audio_set_cur(), host_audio_set_cur_mute(), Host_enable_continuous_in_mode, Host_enable_sof_interrupt, Host_free_in, Host_get_pipe_endpoint_number, host_set_sampling_rate(), Host_unfreeze_pipe, i, host_audio_task_data_t::interf_audio_stream, interf_audio_stream, Is_ep_in, Is_host_in_received, Is_host_nak_received, Is_host_ready, Is_host_stall, j, max, mmi_activity_display(), mmi_display(), MSK_EP_DIR, cs_feature_unit_t::n_bmaControls, PIPE_AUDIO_IN, pipe_audio_in, cs_feature_unit_t::unit, USB_STREAM_HOST, usb_stream_init(), usb_stream_input(), usb_stream_resync(), vTaskDelayUntil(), and xTaskGetTickCount().

Referenced by host_audio_task_init(), and main().

void host_audio_task_init ( void )

This function initializes the host audio task.

References host_audio_task(), NULL, player_init(), sof_cnt, and xTaskCreate.

Referenced by main().

void host_audio_task_shutdown ( void )

This function shuts the host audio task down.

References NULL, and player_shutdown().

void host_set_sampling_rate	(	uint16_t	endpoint,
		uint32_t	sampling_rate
	)

This function selects one of the sampling rate of the streaming interface.

References S_usb_setup_data::bmRequestType, S_usb_setup_data::bRequest, data_stage, DEVICE_DESCRIPTOR, host_transfer_control(), S_usb_setup_data::incomplete_read, MSB1, MSB2, MSB3, usb_request, S_usb_setup_data::wIndex, S_usb_setup_data::wLength, and S_usb_setup_data::wValue.

Referenced by host_audio_task().

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(), i, sprintf(), START_Y_DEMO_TEXT, TIMER_MMI, tmp, USB_STREAM_BUFFER_NUMBER, usb_stream_ppm_get(), val, and WHITE.