lesson4.s

AVR单片机视频教程的课件和每一次课的源程序是学习AVR单片机的首选 第4节

	.module lesson4.c
	.area code(ram, con, rel)
	.area lit(rom, con, rel)
_table::
	.word 63
	.word 6
	.word 91
	.word 79
	.word 102
	.word 109
	.word 125
	.word 7
	.word 127
	.word 111
	.word 119
	.word 124
	.word 57
	.word 94
	.word 121
	.word 113
	.dbfile I:\AVR视频教程\视频教程\lesson4\lesson4\lesson4.c
	.dbsym e table _table A[32:16]I
	.area text(rom, con, rel)
	.dbfile I:\AVR视频教程\视频教程\lesson4\lesson4\lesson4.c
	.dbfunc e delay _delay fV
;              i -> R20,R21
;              j -> R22,R23
;             ms -> R16,R17
	.even
_delay::
	xcall push_gset2
	.dbline -1
	.dbline 9
; #include <iom16v.h>
; #include <macros.h>
; #define  uchar unsigned char
; #define  uint  unsigned int
; #pragma data:code 
; const  table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,
; 		           0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
; void delay(uint ms)
; {
	.dbline 11
;     uint i,j;
; 	for(i=0;i<ms;i++)
	clr R20
	clr R21
	xjmp L5
L2:
	.dbline 12
; 	   {
	.dbline 13
	clr R22
	clr R23
	xjmp L9
L6:
	.dbline 13
L7:
	.dbline 13
	subi R22,255  ; offset = 1
	sbci R23,255
L9:
	.dbline 13
	cpi R22,117
	ldi R30,4
	cpc R23,R30
	brlo L6
	.dbline 14
L3:
	.dbline 11
	subi R20,255  ; offset = 1
	sbci R21,255
L5:
	.dbline 11
	cp R20,R16
	cpc R21,R17
	brlo L2
	.dbline -2
	.dbline 15
; 	   for(j=0;j<1141;j++);
;        }
; }
L1:
	xcall pop_gset2
	.dbline 0 ; func end
	ret
	.dbsym r i 20 i
	.dbsym r j 22 i
	.dbsym r ms 16 i
	.dbend
	.dbfunc e show _show fV
;              k -> R20
;              j -> R22
	.even
_show::
	xcall push_gset2
	mov R20,R18
	mov R22,R16
	.dbline -1
	.dbline 17
; void show(uchar j,uchar k)
; {
	.dbline 18
;     PORTA|=BIT(3);
	sbi 0x1b,3
	.dbline 19
; 	PORTB=table[j];
	ldi R24,2
	mul R24,R22
	movw R30,R0
	ldi R24,<_table
	ldi R25,>_table
	add R30,R24
	adc R31,R25
	lpm R0,Z+
	lpm R1,Z
	movw R30,R0
	out 0x18,R30
	.dbline 20
; 	PORTA&=~BIT(3);
	cbi 0x1b,3
	.dbline 22
; 	
; 	PORTB=0XFF;
	ldi R24,255
	out 0x18,R24
	.dbline 23
; 	PORTB&=~BIT(k);
	ldi R16,1
	mov R17,R20
	xcall lsl8
	mov R2,R16
	com R2
	in R3,0x18
	and R3,R2
	out 0x18,R3
	.dbline 24
; 	PORTA|=BIT(4);
	sbi 0x1b,4
	.dbline 25
; 	PORTA&=~BIT(4);
	cbi 0x1b,4
	.dbline 26
; 	delay(1);
	ldi R16,1
	ldi R17,0
	xcall _delay
	.dbline -2
	.dbline 27
; }
L10:
	xcall pop_gset2
	.dbline 0 ; func end
	ret
	.dbsym r k 20 c
	.dbsym r j 22 c
	.dbend
	.dbfunc e main _main fV
;              i -> R20
	.even
_main::
	.dbline -1
	.dbline 29
; void main()
; {
	.dbline 31
;     uchar i;
;     DDRA|=BIT(3);
	sbi 0x1a,3
	.dbline 32
; 	DDRA|=BIT(4);
	sbi 0x1a,4
	.dbline 33
; 	DDRB=0XFF;
	ldi R24,255
	out 0x17,R24
	xjmp L13
L12:
	.dbline 35
; 	while(1)
; 	{
	.dbline 36
; 	for(i=1;i<7;i++)
	ldi R20,1
	xjmp L18
L15:
	.dbline 37
	.dbline 38
	mov R18,R20
	subi R18,1
	mov R16,R20
	xcall _show
	.dbline 39
L16:
	.dbline 36
	inc R20
L18:
	.dbline 36
	cpi R20,7
	brlo L15
	.dbline 40
L13:
	.dbline 34
	xjmp L12
X0:
	.dbline -2
	.dbline 41
; 	{
; 	   show(i,i-1);
; 	}
; 	}
; }
L11:
	.dbline 0 ; func end
	ret
	.dbsym r i 20 c
	.dbend