rectifier.eve

DSP中YSS920B开发板工具程序

//           僒儞僾儖僾儘僌儔儉 rectifier.eve
//
// 忦審暘婒傪娷傓僒儞僾儖僾儘僌儔儉偱偡丅
// 偙偺僾儘僌儔儉偱偼慡攇惍棳婍 (full wave rectifier) 傪幚尰偟偰偄傑偡丅
// 偮傑傝丄
//     擖椡怣崋偑惓側傜偽偦偺傑傑
//     擖椡怣崋偑晧側傜偽斀揮
// 偱偡丅
//
// SDI0 偺 Lch 偵擖椡偝傟偨怣崋偵懳偟偰慡攇惍棳傪巤偟偨傕偺傪
// SDO0 偺 Rch 偵弌椡偟偰偄傑偡丅SDO0 偺 Lch 偵偼 SDI0 Lch 
// 擖椡傪偦偺傑傑弌椡偟偰偄傑偡丅
// SDO0 偺 L/Rch 埲奜偺僠儍儞僱儖偼偡傋偰 0 弌椡偱偡丅
//
// 惓尫攇傪 SDI0 偺 Lch 偵擖椡偟丄SDO0 偺 L/R ch 傪僆僔儘僗僐
// 乕僾偱妋擣偡傞偙偲偵傛傝慡攇惍棳屻偺攇宍傪妋擣偱偒傑偡丅
//
// 偙偺僾儘僌儔儉傪傾僙儞僽儔 EveAsm.exe 偱傾僙儞僽儖偡傞偙偲偵傛傝
// rectifier.datEve 偑嶌惉偝傟傑偡丅
//
// -----------------------------------------------------------------
//
//           Sample program  rectifier.eve
//
// This is the program including the branching.
// This program realizes the full wave rectifier, which means :
//   When input signal is positive, output as it is.
//   When input signal is negative, output the reversed signal.
//
// Full-wave-rectified SDI0 Lch signal is output from SDO0 Rch,
// while SDI0 Lch signal is output from SDO0 Lch as it is.
// The other channels except for SDO0 L/Rch are all zero output.
//
// Input sine wave to SDI0 Lch, and check SDO0 L/Rch analog output
// by oscilloscope to confirm the wave.
//
// rectifier.datEve is assemble from this program by executing EveAsm.exe.



// -----------------------------------------------------------------
// -----------------------------------------------------------------
// -----------------------------------------------------------------

#define ERAM_TYPE NO_ERAM             //奜晅 RAM 側偟

//============================================================
//                  EVE Program
//                       rectifier
//============================================================

// COEF define
	CDat	P0.5		(-1, 0x4000);		// +0.5
	CDat	M0.5		(-1, 0xC000);		// -0.5

// Inner DATA define
	DAdr	Dtmp		(0);				// temporary 梡

//------------------------------------------------------------
//       幚峴僐儅儞僪僽儘僢僋
//  	|   ERAM            |   BUS             |   MAC/JMP   
//------------------------------------------------------------
		;					Dtmp = IN0;			ACC0 = Dtmp		*P0.5;			// ACC0=IN0*(+0.5)
		;					;					ACC1 = Dtmp		*M0.5;			// ACC1=IN0*(-0.5)
		;					;					;
		;					;					;
		;					;					;
		;					;					if (ACC<0) jmp minus;			// ACC0 偑晧偺偲偒偼 minus 傊丅
plus:	;					OUT1 = ACC0Ls1;		;								// ACC0 偑惓偺偲偒丄OUT1=ACC0<<1丅
		;					;					jmp RecEnd;
minus:	;					OUT1 = ACC1Ls1;		;								// ACC0 偑晧偺偲偒丄OUT1=ACC1<<1丅
//	----------------------------------------------------------------------
RecEnd:	;					OUT0 = IN0;			;								// OUT0=IN0
		;					OUT2 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
		;					OUT3 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
		;					OUT4 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
		;					OUT5 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
		;					OUT6 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
		;					OUT7 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
//	----------------------------------------------------------------------
		;					MPEND = $0.5;		;								// program 廔椆丅
		;					;					;
		;					;					;