system.asm

凌阳单片机的语音程序5

//////////////////////////////////////////////////////////////////
// Function: System commander                     
// 	Service for H/W, keyboard scan
// Input: None
// Output: None

// Functions:
//	(In Assembly view)
// 	call F_System_Initial; 
//	(In C language view)
// 	System_Initial(); 
//////////////////////////////////////////////////////////////////

.include resource.inc;
.include hardware.inc;
.include key.inc;

.public 	R_SpeechType;
.RAM
.var		R_SpeechType;

.external	R_Flag_A2000;
.external	R_Flag_S480;

.CODE
.public _Set_SpeechType;
.public F_Set_SpeechType;
F_Set_SpeechType:
_Set_SpeechType:	.PROC
		push	BP,BP to [SP];				//add if some parameters in
  		BP = SP + 1;						//
		r1 = [BP+3];						//
		[R_SpeechType] = r1;				//
		pop		BP,BP from [SP];			//
		retf;
		.ENDP


.public _System_Initial;
.public	F_System_Initial;
_System_Initial: .PROC
F_System_Initial:
		
		push	BP,BP to [SP];				//add if some parameters in
  		
		call	F_Key_Scan_Initial;			// For keyboard scan
		// Add other general initialization here
		
		//BP = SP + 1;
		//r1 = [BP+3];
			
		call	F_User_Init_IO;
		
		//r1 =0x0001;						// return value
	
		pop		BP,BP from [SP];		
		retf;
		.ENDP;

//****************************************************************
// Function: Main Loop of system                     
// Input: None
// Output: None
// Using:
// 	call F_System_ServiceLoop; (in assembly domain)
//  System_ServiceLoop(); (in C domain) 	
//****************************************************************
.public _System_ServiceLoop;
.public	F_System_ServiceLoop;
_System_ServiceLoop: .PROC                  
F_System_ServiceLoop:
		call	F_Key_DebounceCnt_Down;		// calling debounce subroutine for key scan subroutine
		call    F_Key_Scan_ServiceLoop;		// calling key scan subroutine 1 scan line
		//call    F_Key_Scan_ServiceLoop_2;		// calling key scan subroutine 2 scan line
		// Add other general service functions here	
		R1 = 0x0001;                      // Clear watch dog
		[P_Watchdog_Clear] = R1;       	//	
        retf;
        .ENDP;

.public F_User_Init_IO;        
F_User_Init_IO:        
		R1 = 0xFE00;				// IOB: b8 input, b9 output for PC-Play / SRAM addr.
        [P_IOB_Dir] = R1;			// IOB: output b15 .. b10 output
        [P_IOB_Attrib] = R1;
        R1 = 0x01FF;
        [P_IOB_Data] = R1;
        
        R1 = 0xff80;				// IOA: b15 .. b8 :output SRAM data
        [P_IOA_Dir] = R1;			// IOA: b7: Key scan line	
        [P_IOA_Attrib] = R1;		// IOA: b6 .. b4: CS*,OE*,WR
        R1 = 0x0000;				// IOA: b3 .. b0: Key input
        [P_IOA_Data] = R1; 
        RETF; 
//=====================================================================================
//函数：F_ClearWatchdog （）
//语法：void F_ClearWatchdog (void)
//描述：看清门狗
//参数：无
//返回：无
//=====================================================================================      
.code 
.public _F_ClearWatchdog;
_F_ClearWatchdog: .proc
        R1 = 0x0001;
        [P_Watchdog_Clear] = R1;
        RETF;
.ENDP