main.lss

单片机源代码

main.elf:     file format elf32-avr

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         00000084  00000000  00000000  00000094  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .data         00000000  00800060  00000084  00000118  2**0
                  CONTENTS, ALLOC, LOAD, DATA
  2 .bss          00000000  00800060  00000084  00000118  2**0
                  ALLOC
  3 .noinit       00000000  00800060  00800060  00000118  2**0
                  CONTENTS
  4 .eeprom       00000000  00810000  00810000  00000118  2**0
                  CONTENTS
  5 .stab         00000258  00000000  00000000  00000118  2**2
                  CONTENTS, READONLY, DEBUGGING
  6 .stabstr      00000371  00000000  00000000  00000370  2**0
                  CONTENTS, READONLY, DEBUGGING
Disassembly of section .text:

00000000 <__vectors>:
   0:	0a c0       	rjmp	.+20     	; 0x16
   2:	22 c0       	rjmp	.+68     	; 0x48
   4:	21 c0       	rjmp	.+66     	; 0x48
   6:	20 c0       	rjmp	.+64     	; 0x48
   8:	1f c0       	rjmp	.+62     	; 0x48
   a:	1e c0       	rjmp	.+60     	; 0x48
   c:	1d c0       	rjmp	.+58     	; 0x48
   e:	1c c0       	rjmp	.+56     	; 0x48
  10:	1b c0       	rjmp	.+54     	; 0x48
  12:	1a c0       	rjmp	.+52     	; 0x48
  14:	19 c0       	rjmp	.+50     	; 0x48

00000016 <__ctors_end>:
  16:	11 24       	eor	r1, r1
  18:	1f be       	out	0x3f, r1	; 63
  1a:	cf ed       	ldi	r28, 0xDF	; 223
  1c:	cd bf       	out	0x3d, r28	; 61

0000001e <__do_copy_data>:
  1e:	10 e0       	ldi	r17, 0x00	; 0
  20:	a0 e6       	ldi	r26, 0x60	; 96
  22:	b0 e0       	ldi	r27, 0x00	; 0
  24:	e4 e8       	ldi	r30, 0x84	; 132
  26:	f0 e0       	ldi	r31, 0x00	; 0
  28:	03 c0       	rjmp	.+6      	; 0x30

0000002a <.do_copy_data_loop>:
  2a:	c8 95       	lpm
  2c:	31 96       	adiw	r30, 0x01	; 1
  2e:	0d 92       	st	X+, r0

00000030 <.do_copy_data_start>:
  30:	a0 36       	cpi	r26, 0x60	; 96
  32:	b1 07       	cpc	r27, r17
  34:	d1 f7       	brne	.-12     	; 0x2a

00000036 <__do_clear_bss>:
  36:	10 e0       	ldi	r17, 0x00	; 0
  38:	a0 e6       	ldi	r26, 0x60	; 96
  3a:	b0 e0       	ldi	r27, 0x00	; 0
  3c:	01 c0       	rjmp	.+2      	; 0x40

0000003e <.do_clear_bss_loop>:
  3e:	1d 92       	st	X+, r1

00000040 <.do_clear_bss_start>:
  40:	a0 36       	cpi	r26, 0x60	; 96
  42:	b1 07       	cpc	r27, r17
  44:	e1 f7       	brne	.-8      	; 0x3e
  46:	01 c0       	rjmp	.+2      	; 0x4a

00000048 <__bad_interrupt>:
  48:	db cf       	rjmp	.-74     	; 0x0

0000004a <main>:
#define SET_LED PORTD&=0XEF //PD4接红色发光管
#define CLR_LED PORTD|=0X10

int main(void)
{
  4a:	cf ed       	ldi	r28, 0xDF	; 223
  4c:	d0 e0       	ldi	r29, 0x00	; 0
  4e:	de bf       	out	0x3e, r29	; 62
  50:	cd bf       	out	0x3d, r28	; 61
	uchar i,j=0;
  52:	20 e0       	ldi	r18, 0x00	; 0
	DDRD=0X10;
  54:	80 e1       	ldi	r24, 0x10	; 16
  56:	81 bb       	out	0x11, r24	; 17
	PORTD=0X10; 
  58:	82 bb       	out	0x12, r24	; 18

	TCNT0=0; // T/C0开始值 
  5a:	22 bf       	out	0x32, r18	; 50
	TCCR0=5; // 预分频 ck/1024 ,计数允许
  5c:	85 e0       	ldi	r24, 0x05	; 5
  5e:	83 bf       	out	0x33, r24	; 51
	
	while(1)
	{
		//查询定时器方式等待一秒
		//4000000 /1024 /256 /15 ≈ 1Hz
		for(i=0;i<15;i++)
  60:	90 e0       	ldi	r25, 0x00	; 0
		{
			loop_until_bit_is_set(TIFR,TOV0);
  62:	08 b6       	in	r0, 0x38	; 56
  64:	01 fe       	sbrs	r0, 1
  66:	fd cf       	rjmp	.-6      	; 0x62
			sbi(TIFR,TOV0);//写入逻辑1清除TOV0位
  68:	88 b7       	in	r24, 0x38	; 56
  6a:	82 60       	ori	r24, 0x02	; 2
  6c:	88 bf       	out	0x38, r24	; 56
  6e:	9f 5f       	subi	r25, 0xFF	; 255
  70:	9f 30       	cpi	r25, 0x0F	; 15
  72:	b8 f3       	brcs	.-18     	; 0x62
		}
		
		if(j)	//反向LED控制脚
  74:	22 23       	and	r18, r18
  76:	19 f0       	breq	.+6      	; 0x7e
			SET_LED,j=0;
  78:	94 98       	cbi	0x12, 4	; 18
  7a:	20 e0       	ldi	r18, 0x00	; 0
  7c:	f1 cf       	rjmp	.-30     	; 0x60
		else
			CLR_LED,j=1;
  7e:	94 9a       	sbi	0x12, 4	; 18
  80:	21 e0       	ldi	r18, 0x01	; 1
  82:	ee cf       	rjmp	.-36     	; 0x60