main.asm

在dsp-5402的试验箱上实现数码管的显示

;ZY13DSP12BD CONTROL Digital LED
;Mr Li Xiao Bei 
;Hu Bei Zhong You
;2004.4.16
;LED Display
;======================== main.asm =========================
;       
		.mmregs
		.def _c_int00
		.include c54.inc
		.ref c54init
		;数码管地址
Digital0	.set 0x0010
Digital1	.set 0x0011
Digital2	.set 0x0012
Digital3	.set 0x0013
Digital4	.set 0x0014
Digital5	.set 0x0015
Digital6	.set 0x0016
Digital7	.set 0x0017
		.data
DATA:	.word 80FCH,8060H,80DAh,80F2h,8066H,80B6H,80BEH,80BEH;80E0H		;测试数据	
        .sect "progsys"
        .align  0x10
_c_int00:    
        STM #0x0f80,SP           	
		CALL c54init
		LD #DATA ,DP
		
LOOP:
		STM		#DATA+7,AR1
		PORTW	*AR1-,Digital7
		CALL	Delay
		PORTW	*AR1-,Digital6
		CALL	Delay
		PORTW	*AR1-,Digital5
		CALL	Delay
		PORTW	*AR1-,Digital4
		CALL	Delay
		PORTW	*AR1-,Digital3
		CALL	Delay
		PORTW	*AR1-,Digital2
		CALL	Delay
		PORTW	*AR1-,Digital1
		CALL	Delay
		PORTW	*AR1-,Digital0
		CALL	Delay
		B		LOOP
Delay:		
			STM 	#999,AR3	;循环次数1000
LOOP1:		STM		#9, AR2	;循环次数10
LOOP2:		BANZ	LOOP2,*AR2-	;如果AR2不等于0，AR2减1，再判断
			BANZ	LOOP1,*AR3-	;如果AR1不等于0，AR1减1,跳转到LOOP1
			RET		
						
        .end