/*****************************************************************************/
/*???????????????????????????????????????????????????????????????????????????*/
/*?FILENAME?:?bargraph.c?????????????????????????????????????????????????????*/
/*???????????????????????????????????????????????????????????????????????????*/
/*?DEscriptION???????????????????????????????????????????????????????????????*/
/*???TMS320C5416?DSK.????????????????????????????????????????????????????????*/
/*???Configures?four?user?LEDs?as?a?bargraph?display.????????????????????????*/
/*???Different?formats?of?display?for?mono?audio?stereo?audio?or?power??????*/
/*???for?use?with?Fast?Fourier?Transform?（FFT）.??????????????????????????????*/
/*???????????????????????????????????????????????????????????????????????????*/
/*****************************************************************************/

ioport?unsigned?port0;

/*****************************************************************************/
/*?Reference?thresholds??????????????????????????????????????????????????????*/
/*---------------------------------------------------------------------------*/
/*???????????????????????????????????????????????????????????????????????????*/
/*?0?dB?reference?is?taken?to?be?50%?output?level.?This?allows?6dB?headroom??*/
/*?Other?thresholds?are?-6dB?-12dB?and?-18dB?below?the?reference?of?0dB.????*/
/*???????????????????????????????????????????????????????????????????????????*/
/*****************************************************************************/

#define?LEVEL_0dB??0x4000
#define?LEVEL_3dB??0x2D3F
#define?LEVEL_6dB??0x2000
#define?LEVEL_9dB??0x169F
#define?LEVEL_12dB?0x1000
#define?LEVEL_18dB?0x0800
#define?LEVEL_24dB?0x0400
#define?LEVEL_36dB?0x0100

/*****************************************************************************/
/*?bargraph_3dB（）????????????????????????????????????????????????????????????*/
/*---------------------------------------------------------------------------*/
/*???????????????????????????????????????????????????????????????????????????*/
/*?Displays?greater?of?two?inputs?as?a?bargraph?using?3dB?increments.????????*/
/*?For?mono?use?use?the?single?mono?input?for?both?the?left?and?the?right???*/
/*?channels.?????????????????????????????????????????????????????????????????*/
/*???????????????????????????????????????????????????????????????????????????*/
/*****************************************************************************/

void?bargraph_3dB（int?left_channel?int?right_channel）
{
	unsigned?int?input;
	unsigned?int?value?=?0;
	
	/*?If?input?value?is?negative?then?convert?to?positive?*/
	/*?Special?case?where?input?=?-32768?Saturate?0x8000?to?+32767.?*/
	if?（?0x8000?==?left_channel）	left_channel=?0x7FFF;
	else?if?（left_channel?
	if?（?0x8000?==?right_channel）	right_channel=?0x7FFF;
	else?if?（right_channel?
	/*?Di

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

?????文件???????6483??2005-11-13?20:16??template1\bargraph.c

?????文件???????1206??2005-11-11?17:14??template1\bargraph.h

?????文件???????1051??2009-07-11?11:29??template1\cc_build_Debug.log

?????文件???????4878??2009-07-11?11:29??template1\Debug\bargraph.obj

?????文件???????6331??2009-07-11?11:29??template1\Debug\dskboard.obj

?????文件???????8561??2009-07-08?17:17??template1\Debug\EmulatorResetTemp.wks

?????文件?????????31??2009-07-08?17:17??template1\Debug\SdTempBoardFile.dat

?????文件???????4463??2009-07-11?11:29??template1\Debug\switches.obj

?????文件???????5378??2009-07-11?11:29??template1\Debug\template1.obj

?????文件??????55109??2009-07-11?11:29??template1\Debug\template1.out

?????文件???????2810??2009-07-11?11:29??template1\Debug\vectors.obj

?????文件????????690??2009-07-11?11:29??template1\Debug.lkf

?????文件????????492??2009-07-09?11:03??template1\Debug.lkv

?????文件???????2151??2009-07-11?10:53??template1\dskboard.c

?????文件???????1476??2005-11-15?16:42??template1\dskboard.h

?????文件???????2769??2009-07-08?17:01??template1\switches.c

?????文件???????1019??2005-11-08?11:40??template1\switches.h

?????文件???????3073??2009-07-11?11:29??template1\template1.c

?????文件????????278??2005-11-15?16:20??template1\template1.cmd

?????文件???????3072??2009-07-11?11:29??template1\template1.CS_\FILE.CDX

?????文件????????466??2009-07-11?11:29??template1\template1.CS_\FILE.DBF

?????文件????????801??2009-07-11?11:29??template1\template1.CS_\FILE.FPT

?????文件??????28160??2009-07-11?11:29??template1\template1.CS_\SYMBOL.CDX

?????文件??????12208??2009-07-11?11:29??template1\template1.CS_\SYMBOL.DBF

?????文件??????18041??2009-07-11?11:29??template1\template1.CS_\SYMBOL.FPT

?????文件???????2794??2009-07-09?11:42??template1\template1.paf

?????文件???????2977??2009-07-11?11:30??template1\template1.paf2

?????文件???????1029??2009-07-10?18:23??template1\template1.pjt

?????文件???????2385??2009-07-11?11:30??template1\template1.sbl

?????文件???????2424??2005-11-16?15:46??template1\vectors.asm

............此處省略6個文件信息