main.asm

三星94a5接收红外遥控码的并显示在LED上

.include        "C:\OPENice\Include\Reg\s3c94A5.reg"
.include	"ram.reg"



	        ORG	0000H
	        VECTOR	00H,INT_94A5

INT_94A5:
		tcm 	INTPND1,#01H	;是否是外部中断REMOTE
		jp 	Z,EXTER_INT6	;

		tcm 	INTPND1,#08H	;是否是外部中断CD_CLK
		jp 	Z,EXTER_INT1	;

		tcm	INTPND2,#40H	;是否是外部中断TAPE_A
		jp 	Z,EXTER_INT7	;

		tcm	INTPND2,#04H	;TAPE_B
		jp 	Z,EXTER_INT2	;
		
		tcm	INTPND3,#01H	;5MS
		jp	Z,INT_TIMER0

		tcm	INTPND3,#04H	;1000MS
		jp	Z,INT_TIMER1

		tcm	INTPND3,#10H	;200US
		jp	Z,INT_TIMER2
		IRET

	        ORG	3CH
		DB	0FFH
		DB	0FFH
		DB	0FFH
		DB	00H




        ;--------------<< Clear all data registers from 00h to 5Fh >>
	        ORG	100H
RESET: 	
		DI 			; Disable interrupt
	        ld BTCON,#10100011B 	; Watchdog disable
		ld CLKCON,#00011000B 	; Select non-divided CPU clock
		ld 	SP,#0AFH 		; Set stack pointer

		ld R0,#0 ; RAM clear
 RAM_CLR: 
	        clr 	@R0 ;
	        inc 	R0 ;
	        cp 	R0,#0AFH ;
	        jp 	ULE,RAM_CLR


		;*****TIME2 SETTING*******
		ld T0CON,#00100110B 	; 5ms
		ld T0DATAH,#000H
		ld T0DATAL,#0EAH
		
		ld T1CON,#00100100B	;FX/256
		ld T1DATAH,#0B7H
		ld T1DATAL,#1BH

		ld T2CON,#01000110B	;200us
		ld T2DATA,#25H
	 	call INIT_IO

		ld	Show_Led_0,#01
		ld	Show_Led_1,#02
		ld	Show_Led_2,#03
		ld	Show_Led_3,#04
		
		EI 

        ;--------------<< Clear all data registers from 00h to 5Fh >>

        

;-------------------------------------------------------------------------
;=========================================================
;=========================================================
;=========================================================
;=========================================================
;=========================================================
;			主程序开始
;=========================================================
;=========================================================
;=========================================================
;=========================================================
MAIN:

		call	Get_Remote_Key

		;call	Display_Temp



		call	Refresh_Display
		jp	MAIN
;=========================================================
;=========================================================
;=========================================================
;=========================================================
;=========================================================
;			主程序结束
;=========================================================
;=========================================================
;=========================================================
;=========================================================












































































































;***********************************************************	
;*************				********************	
;*************		INTERRUPT	********************	
;*************				********************	
;***********************************************************	

;*****************************************
;		EXTER INT 6 REMOTE
;*****************************************
EXTER_INT6:
		push		SYM
		clr             Time_Delay
		clr             Time_Delay1
		tcm		Status_1,#STATE_9M_BIT			;判断是否是接收起始码9毫秒状态
		jp		z,state_first
		tcm		Status_1,#STATE_2M_BIT			;
		jp		z,state_third	
		or		Status_1,#STATE_9M_BIT			;设置状态为接收9毫秒
		jp		ex_int_ret
state_first:
		cp		Time_Int_Count,#IR_TIME_9000US+IR_TIME_4500US+5*IR_TIME_MARGIN
		jp		ugt,error_return
		cp		Time_Int_Count,#IR_TIME_9000US+IR_TIME_4500US-5*IR_TIME_MARGIN
		jp		ugt,SET_SECN_2MS
		cp		Time_Int_Count,#IR_TIME_9000US+IR_TIME_2250US-5*IR_TIME_MARGIN
		jp		ult,error_return
		inc		Ir_Repeat_Times
		jp		error_return
SET_SECN_2MS:
		or		Status_1,#STATE_2M_BIT
		and		Status_1,#0ffh-STATE_9M_BIT
		ld		Remote_Bit_Count,#20h					;接收码值长度
		jp		ex_int_ret
state_third:
		cp		Time_Int_Count,#IR_TIME_2250US+2*IR_TIME_MARGIN		;允许误差200us
		jp		ugt,error_return
		cp		Time_Int_Count,#IR_TIME_1125US-2*IR_TIME_MARGIN		;允许误差200us
		jp		ult,error_return
		;与当中值(1125+2250)/2=1.6ms判断是1或0
		sub		Time_Int_Count,#(IR_TIME_2250US+IR_TIME_1125US)/2 	
		rrc             Remote_Cmd_Code1
		rrc             Remote_Cmd_Code0
		rrc             Remote_Sys_Code1
		rrc             Remote_Sys_Code0
		dec		Remote_Bit_Count
		jp		nz,ex_int_ret
set_ok:
		;遥控码接收完毕
		clr		Ir_Repeat_Times
		or		Status_1,#IR_KEY_OK_BIT
		or		Status_1,#IR_KEY_DOWN_UP_BIT
error_return:
		;初始化接收状态
		and		Status_1,#0ffh-STATE_2M_BIT
		or		Status_1,#STATE_9M_BIT
ex_int_ret:
		clr             Time_Int_Count
		;*********************************************
Exent_Int0_ret:
		and 		INTPND1,#0FEH ; 是否是外部中断
		pop		SYM
		iret
;*****************************************
;		EXTER INT 1 CD CLK
;*****************************************

EXTER_INT1:
		push		SYM
;****************************************************
		and 		INTPND1,#0F7H ; 是否是外部中断

		pop		SYM
		IRET

	
;*****************************************
;		EXTER INT P5.0
;*****************************************

EXTER_INT2:
		push		SYM
		and		INTPND2,#0FBH; 是否是外部中断
		pop		SYM
		IRET

	

;*****************************************
;		EXTER INT P4.7
;*****************************************

EXTER_INT7:
		push		SYM


		and		INTPND2,#0BFH; 
		pop		SYM
		IRET



;*****************************************
;		TIME0 INT 5MS
;*****************************************
INT_TIMER0:
		push		SYM
		inc		Show_Time_5ms
		inc		delay_5ms
		and		INTPND3,#0FEH
		pop		SYM
		iret

		

;*****************************************
;		TIME1 INT 1SEC
;*****************************************
INT_TIMER1:
		push		SYM
		and		INTPND3,#0FBH
		pop		SYM
		iret

		

;*****************************************
;		TIME2 INT 200US
;*****************************************
INT_TIMER2:
		push		SYM
	
		;------------------------------
		;超过120毫秒后表示遥控按键己弹起
		;------------------------------
		inc		Time_Int_Count
		inc             Time_Delay


		cp		Time_Delay,#30
		jp		ne,return_t_int
		inc             Time_Delay1
		clr		Time_Delay

		cp		Time_Delay1,#19
		jp		ne,return_t_int
		
		clr             Time_Delay1
		clr             Time_Delay
		and		Status_1,#0ffh-IR_KEY_DOWN_UP_BIT		;按键弹起
		and		Status_1,#0ffh-STATE_9M_BIT			;

return_t_int:	


		ld		INTPND3,#0EFH;TIME2
		pop		SYM
		iret
;*****************************************
;*****************************************







;.include	".\src\18b20\18b20.asm"
.include	"sys_init.asm"
.include 	"remote_key.asm"
.include	"show_led.asm"
.include	"time.asm"

	END