/*============================================================================
PROJECT...............:?Wireless?Headset
FILE..................:?audio.c
INITIAL?AUTHOR........:?Nordic?Semiconductor
INITIAL?DATE..........:?15.04.2005
COMPILER..............:?avr-gcc?（GCC）?3.4.3

Description?:?Functions?for?initialization?and?interaction?with?audio?codec
			??XE3005?and?USB?audio?controller?SN11220ACF.

Modification?history:

DATE??????		VERSION		COMMENT
-----------------------------------------------------------------------------
03.11.2006		1.0			Initial?version
06.11.2006		1.1			Included?function?reset_codec（）.
21.11.2006		1.2			Changed?reset_codec?function				??
============================================================================*/

/***************************************************************************
*?Library?Includes
***************************************************************************/
#include?
#include?
#include?
#include?

/***************************************************************************
*?Local?Includes
***************************************************************************/
#include?“audio.h“
#include?“main.h“
#include?“mcu.h“
#include?“protocol.h“

/***************************************************************************
*?Constants
***************************************************************************/

/***************************************************************************
*?Types?
***************************************************************************/

/***************************************************************************
*?Variables?
***************************************************************************/
char?sample_counter;

/***************************************************************************
*?Macros?
***************************************************************************/

/***************************************************************************
*?Prototypes
***************************************************************************/
void?write_codec_reg（char?addresschar?data_byte）;

/***************************************************************************
Interrupt:?SIGNAL?（SIG_OUTPUT_COMPARE2B）

Function?:?Interrupt?routine?that?is?called?when?USART?databuffer?is?empty.
		???One?byte?of?data?is?transmitted/received?to/from?the?Codec.	
***************************************************************************/
#ifndef?USB
SIGNAL?（SIG_OUTPUT_COMPARE2B）
{
	*input_write_ptr++?=?UDR0;
	*input_write_ptr++?=?UDR0;
	UDR0?=?*output_read_ptr++;
	UDR0?=?*output_read_ptr++;

	if（input_write_ptr?>=?&input[AUDIO_BUFFER_LENGTH]）
		input_write_ptr?=?&input[0];
	if（output_read_ptr?>=?&output[AUDIO_BUFFER_LENGTH]）
		output_read_ptr?=?&output[0];
}
#endif
/***************************************************************************

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????3087514??2007-03-22?09:52??nRF24V1\Release?1.0\atmega48_atmega88_atmega168[1].pdf

?????文件??????83288??2006-12-15?10:14??nRF24V1\Release?1.0\Documentation\nRD24V1?Getting?Started?Guide?v1.0.pdf

?????文件??????70694??2006-12-15?13:13??nRF24V1\Release?1.0\Documentation\nRD24V1?SW?Developer?Guide?v1.0.pdf

?????文件?????167156??2006-12-11?09:31??nRF24V1\Release?1.0\Documentation\nRD24V1?USB?Qualification?Test?Report.pdf

?????文件?????415191??2006-12-18?09:39??nRF24V1\Release?1.0\Documentation\nRD24V1?User?Guide?v1.0.pdf

?????文件???????1365??2007-03-28?16:06??nRF24V1\Release?1.0\Firmware\Code\.dep\main.o.d

?????文件???????1563??2007-03-28?17:12??nRF24V1\Release?1.0\Firmware\Code\.dep\mcu.o.d

?????文件???????1175??2007-03-28?16:06??nRF24V1\Release?1.0\Firmware\Code\.dep\protocol.o.d

?????文件????????325??2006-12-06?12:40??nRF24V1\Release?1.0\Firmware\Code\application.h

?????文件???????6216??2007-03-28?15:48??nRF24V1\Release?1.0\Firmware\Code\audio.c

?????文件???????2420??2006-12-14?10:22??nRF24V1\Release?1.0\Firmware\Code\audio.h

?????文件????????431??2006-11-01?11:09??nRF24V1\Release?1.0\Firmware\Code\headset.pnproj

?????文件??????10865??2006-12-14?10:22??nRF24V1\Release?1.0\Firmware\Code\main.c

?????文件???????3050??2006-12-14?10:22??nRF24V1\Release?1.0\Firmware\Code\main.h

?????文件??????17153??2007-03-28?16:06??nRF24V1\Release?1.0\Firmware\Code\main.lst

?????文件???????9360??2007-03-28?16:06??nRF24V1\Release?1.0\Firmware\Code\main.o

?????文件???????2944??2007-03-26?16:20??nRF24V1\Release?1.0\Firmware\Code\main_elf.aps

?????文件??????14220??2006-11-01?11:03??nRF24V1\Release?1.0\Firmware\Code\makefile

?????文件??????10375??2006-12-14?10:21??nRF24V1\Release?1.0\Firmware\Code\mcu.c

?????文件???????5563??2007-09-08?08:49??nRF24V1\Release?1.0\Firmware\Code\mcu.h

?????文件??????32076??2006-12-14?10:21??nRF24V1\Release?1.0\Firmware\Code\protocol.c

?????文件???????5787??2006-12-14?10:09??nRF24V1\Release?1.0\Firmware\Code\protocol.h

?????文件?????130167??2007-03-28?16:06??nRF24V1\Release?1.0\Firmware\Code\protocol.lst

?????文件??????23744??2007-03-28?16:06??nRF24V1\Release?1.0\Firmware\Code\protocol.o

?????文件???????9675??2006-12-14?10:20??nRF24V1\Release?1.0\Firmware\Code\radio.c

?????文件???????3279??2006-12-14?10:23??nRF24V1\Release?1.0\Firmware\Code\radio.h

?????文件??????17007??2006-12-06?12:43??nRF24V1\Release?1.0\Firmware\Compiled\audio_dongle_1_4.hex

?????文件??????17289??2006-12-06?12:44??nRF24V1\Release?1.0\Firmware\Compiled\headset_1_4.hex

?????文件??????17318??2006-12-06?12:41??nRF24V1\Release?1.0\Firmware\Compiled\usb_dongle_1_4.hex

?????文件???????1453??2007-03-21?10:02??nRF24V1\Release?1.0\Firmware\EEPROM\nRD24V1_EE_D1.hex

............此處省略86個文件信息