//---------------------------------------------------------------------------
#include "sio_util.h"
//---------------------------------------------------------------------------
typedef unsigned char byte;

typedef struct _LDCNMOD {
	byte	modtype;       	//module type
        byte	modver;	       	//module version number
	byte	statusitems;	//definition of items to be returned
	byte	stat;  	       	//status byte
        byte	groupaddr;     	//current group address
        bool	groupleader;	//TRUE if group leader
        void *	p;      	//pointer to specific module's data structure
} LDCNMOD;


#define MAXSIOERROR 3

//Define PIC baud rate divisors
#define	PB9600	       129
#define	PB19200		63
#define	PB57600		20
#define	PB115200	10

//Module type definitions:
#define	SERVOMODTYPE	0
#define	SERVOHYBTYPE   90
#define	IOMODTYPE  	2
#define	STEPMODTYPE   	3

//The following must be created for each new module type:
//		data structure XXXMOD
//		Initializer function NewXXXMod
//		Status reading function GetXXXStat
//		LdcnInit and SendLdcnCmd must be modified to include calls
//			to the two functions above

#define CKSUM_ERROR 	0x02	//Checksum error bit in status byte

#define MAXNUMMOD	33


//Initialization and shutdown
void InitVars(void);
void LdcnSetStopCtrl(byte addr, byte mode);

DLLENTRY(int)  LdcnInit(char *portname, unsigned int baudrate);
DLLENTRY(int)  LdcnFullInit(char *portname, unsigned int baudrate);
DLLENTRY(int)  LdcnRestoreNetwork(char *portname, unsigned int baudrate);
DLLENTRY(BOOL) LdcnSendCmd(byte addr, byte cmd, char *datastr, byte n);
DLLENTRY(void) FixSioError();
DLLENTRY(void) LdcnShutdown(void);

//Module type independant commands (supported by all module types)
DLLENTRY(BOOL) LdcnSetGroupAddr(byte addr, byte groupaddr, bool leader);
DLLENTRY(BOOL) LdcnDefineStatus(byte addr, byte statusitems);
DLLENTRY(BOOL) LdcnReadStatus(byte addr, byte statusitems);
DLLENTRY(BOOL) LdcnChangeBaud(byte groupaddr, unsigned int baudrate);
DLLENTRY(BOOL) LdcnSynchInput(byte groupaddr);
DLLENTRY(BOOL) LdcnNoOp(byte addr);
DLLENTRY(BOOL) LdcnHardReset();
DLLENTRY(BOOL) LdcnResetDevice(byte addr);

//Retrieve module type independant data from a module's data structure
DLLENTRY(byte) LdcnGetStat     (byte addr);
DLLENTRY(byte) LdcnGetStatItems(byte addr);
DLLENTRY(byte) LdcnGetModType  (byte addr);
DLLENTRY(byte) LdcnGetModVer   (byte addr);
DLLENTRY(byte) LdcnGetGroupAddr(byte addr);
DLLENTRY(BOOL) LdcnGroupLeader (byte addr);

DLLENTRY(HANDLE) GetComPort();
DLLENTRY(int)    GetSioError();
DLLENTRY(int)    IsBusy();