www.pudn.com > OS.rar > S200TTS1BIN_Access_byFAT.c, change:2006-01-12,size:1480b

#include "system_head.h" 
#include "component_head.h" 
 
#ifdef C_SND_S200TTS_SUPPORT 
//----------------------------------------------------------------- 
 
extern LPTR TTS1BIN_Curr_Addr; 
extern LPTR TTS1BIN_Dest_Addr; 
extern unsigned int TTS1BIN_Dest_Offset; 
extern unsigned int Frame_Length; 
 
int fs_Handle_S200TTS1=-1;	//when =-1,it say,have't open SP_WORD.200,not need close 
 
//begin address at _TTS1BIN_Curr_DS:_TTS1BIN_Curr_Addr 
void S200TTS1BIN_Access_Init(void) 
{ 
	fs_Handle_S200TTS1 = open (GLPSTR("a:\\SP_WORD.200"), O_RDWR ); 
} 
 
//move Frame_Length words from [TTS1BIN_Curr_DS:TTS1BIN_Curr_Addr] to [TTS1BIN_Dest_DS:TTS1BIN_Dest_Addr]	 
//then add Frame_Length to Dest pointer,Curr need not add,because, next time it is cal again 
void S200TTS1BIN_Access_GetData(void) 
{ 
	UINT32 Dest_Addr; 
 
	lseek( fs_Handle_S200TTS1, TTS1BIN_Curr_Addr, 0); 
	Dest_Addr = (UINT32)( (TTS1BIN_Dest_Addr < 1) + TTS1BIN_Dest_Offset ); 
	read( fs_Handle_S200TTS1, Dest_Addr, Frame_Length); 
	Dest_Addr += Frame_Length; 
	TTS1BIN_Dest_Offset = Dest_Addr & 0x0001; 
	TTS1BIN_Dest_Addr = Dest_Addr >> 1; 
} 
 
void S200TTS1BIN_Access_End(void) 
{ 
	if(fs_Handle_S200TTS1 != -1) 
	{ 
		//SpFSclose(fs_Handle_S200TTS1);	//guili 2005.10.22 
		close(fs_Handle_S200TTS1);			//guili 2005.10.22 
	} 
	fs_Handle_S200TTS1 = -1;	//let user know, this time SP_WORD.200 have closed 
} 
 
//----------------------------------------------------------------- 
#endif	//C_SND_S200_SUPPORT