/////////////////////////////////////////////////////////////////////////////
// ChannelDefinition.h
// --------------------
// Defines a data channel (based on DDAS testplan.h)
//
//
// AUTHOR:	  A. J. Owski
//    LOC:	  1250
//   DEPT:	  5260 Tool Development 
//			  (formerly Instrument Systems)
//
// COPYRIGHT: (c) 2002 DaimlerChrysler Corp.
//
// REVISIONS: (most-recent at top of list).
//
// Date	  Init	Description of Change
// ----	  ----	---------------------
// 11/08/04 wjp	Remove redundant CalDate from Channel definition and label the 
//				field as spare bytes.  Use the date in the transducer structure,
//				which is part of the channel definition.
//

#if !defined( CHANNEL_H )
#define CHANNEL_H

#include  "TransducerDefinition.h"

enum ChannelFlags{CHANFLAG_ACTIVE};


// Channel State Macro's

#define	ISCHANACTIVE(pChan)(pChan->Flags&(1<<CHANFLAG_ACTIVE)?1:0)
#define	SETCHANACTIVE(pChan)(pChan->Flags|=(1<<CHANFLAG_ACTIVE))
#define	CLRCHANACTIVE(pChan)(pChan->Flags&=(~(1<<CHANFLAG_ACTIVE)))


// Channel Data Structure

typedef struct tagCHANNEL
	{
	short	Size;				//	Size of this object
	short	Flags;				//  Channel Flags
	char	Name[64];			//	Channel Name
	char	Sign[8];			//	Sign +, -, or blank
	char	Axis[8];			//	X,Y,Z,FX,MX,AX,...
	float	FilterFreq;			//	Channel Filter Class (in Hz)
	float	SetGain;			//	Gain setting (1 - n)
	float	ActGain;			//	Actual (measured?) gain setting.
	float	Rcal;				//  Shunt cal resistance
	float	Excitation;			//	Excitation Voltage (when programable)
//	time_t	CalDate;			//	Calibration date (Remove - redundant)
	byte	byteSpares[4];		//	Spare bytes (was Cal Date)
	TRANSDUCER	Transducer;		//	"Snapshot" of transducer values
	} CHANNEL;

typedef CHANNEL *PCHANNEL;		// Pointer to a channel
typedef CHANNEL *PCHAN;			// Even shorter version of above

#endif // !defined( CHANNEL_H )