main.lss

来自「avr的I/O、串口、定时器/计数器、外部中断、LCD等的例程」· LSS 代码 · 共 146 行

main.elf:     file format elf32-avr

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         000000c6  00000000  00000000  00000094  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .data         00000000  00800060  000000c6  0000015a  2**0
                  CONTENTS, ALLOC, LOAD, DATA
  2 .bss          00000000  00800060  000000c6  0000015a  2**0
                  ALLOC
  3 .noinit       00000000  00800060  00800060  0000015a  2**0
                  CONTENTS
  4 .eeprom       00000000  00810000  00810000  0000015a  2**0
                  CONTENTS
  5 .debug_aranges 00000014  00000000  00000000  0000015a  2**0
                  CONTENTS, READONLY, DEBUGGING
  6 .debug_pubnames 0000001b  00000000  00000000  0000016e  2**0
                  CONTENTS, READONLY, DEBUGGING
  7 .debug_info   00000125  00000000  00000000  00000189  2**0
                  CONTENTS, READONLY, DEBUGGING
  8 .debug_abbrev 000000c4  00000000  00000000  000002ae  2**0
                  CONTENTS, READONLY, DEBUGGING
  9 .debug_line   000000e1  00000000  00000000  00000372  2**0
                  CONTENTS, READONLY, DEBUGGING
 10 .debug_str    0000009a  00000000  00000000  00000453  2**0
                  CONTENTS, READONLY, DEBUGGING
Disassembly of section .text:

00000000 <__vectors>:
   0:	0c 94 2a 00 	jmp	0x54
   4:	0c 94 45 00 	jmp	0x8a
   8:	0c 94 45 00 	jmp	0x8a
   c:	0c 94 45 00 	jmp	0x8a
  10:	0c 94 45 00 	jmp	0x8a
  14:	0c 94 45 00 	jmp	0x8a
  18:	0c 94 45 00 	jmp	0x8a
  1c:	0c 94 45 00 	jmp	0x8a
  20:	0c 94 45 00 	jmp	0x8a
  24:	0c 94 45 00 	jmp	0x8a
  28:	0c 94 45 00 	jmp	0x8a
  2c:	0c 94 45 00 	jmp	0x8a
  30:	0c 94 45 00 	jmp	0x8a
  34:	0c 94 45 00 	jmp	0x8a
  38:	0c 94 45 00 	jmp	0x8a
  3c:	0c 94 45 00 	jmp	0x8a
  40:	0c 94 45 00 	jmp	0x8a
  44:	0c 94 45 00 	jmp	0x8a
  48:	0c 94 45 00 	jmp	0x8a
  4c:	0c 94 45 00 	jmp	0x8a
  50:	0c 94 45 00 	jmp	0x8a

00000054 <__ctors_end>:
  54:	11 24       	eor	r1, r1
  56:	1f be       	out	0x3f, r1	; 63
  58:	cf e5       	ldi	r28, 0x5F	; 95
  5a:	d4 e0       	ldi	r29, 0x04	; 4
  5c:	de bf       	out	0x3e, r29	; 62
  5e:	cd bf       	out	0x3d, r28	; 61

00000060 <__do_copy_data>:
  60:	10 e0       	ldi	r17, 0x00	; 0
  62:	a0 e6       	ldi	r26, 0x60	; 96
  64:	b0 e0       	ldi	r27, 0x00	; 0
  66:	e6 ec       	ldi	r30, 0xC6	; 198
  68:	f0 e0       	ldi	r31, 0x00	; 0
  6a:	02 c0       	rjmp	.+4      	; 0x70

0000006c <.do_copy_data_loop>:
  6c:	05 90       	lpm	r0, Z+
  6e:	0d 92       	st	X+, r0

00000070 <.do_copy_data_start>:
  70:	a0 36       	cpi	r26, 0x60	; 96
  72:	b1 07       	cpc	r27, r17
  74:	d9 f7       	brne	.-10     	; 0x6c

00000076 <__do_clear_bss>:
  76:	10 e0       	ldi	r17, 0x00	; 0
  78:	a0 e6       	ldi	r26, 0x60	; 96
  7a:	b0 e0       	ldi	r27, 0x00	; 0
  7c:	01 c0       	rjmp	.+2      	; 0x80

0000007e <.do_clear_bss_loop>:
  7e:	1d 92       	st	X+, r1

00000080 <.do_clear_bss_start>:
  80:	a0 36       	cpi	r26, 0x60	; 96
  82:	b1 07       	cpc	r27, r17
  84:	e1 f7       	brne	.-8      	; 0x7e
  86:	0c 94 47 00 	jmp	0x8e

0000008a <__bad_interrupt>:
  8a:	0c 94 00 00 	jmp	0x0

0000008e <main>:
//    为了使 _delay_ms()函数的延时正确，须在makefile中设定F_CPU为实际的系统时钟频
//    本范例为1MHz内部RC振荡器 即 F_CPU=1000000

int main(void)
{
  8e:	cf e5       	ldi	r28, 0x5F	; 95
  90:	d4 e0       	ldi	r29, 0x04	; 4
  92:	de bf       	out	0x3e, r29	; 62
  94:	cd bf       	out	0x3d, r28	; 61
 unsigned char i,j,k; //定义变量
 PORTA=0xFF;			
  96:	8f ef       	ldi	r24, 0xFF	; 255
  98:	8b bb       	out	0x1b, r24	; 27
 DDRA=0xFF;				//PA口设为输出高电平，灯灭
  9a:	8a bb       	out	0x1a, r24	; 26
  9c:	ae ee       	ldi	r26, 0xEE	; 238
  9e:	b2 e0       	ldi	r27, 0x02	; 2
  a0:	c0 e0       	ldi	r28, 0x00	; 0
  a2:	d0 e0       	ldi	r29, 0x00	; 0
 while(1)
 {
	i=1;
  a4:	41 e0       	ldi	r20, 0x01	; 1
	for (j=0;j<8;j++)  //循环8次，即PA0~~PA7轮流闪亮  
  a6:	30 e0       	ldi	r19, 0x00	; 0
	{
		PORTA=~i;		//反相输出,低电平有效
  a8:	84 2f       	mov	r24, r20
  aa:	80 95       	com	r24
  ac:	8b bb       	out	0x1b, r24	; 27
  ae:	29 e0       	ldi	r18, 0x09	; 9
 */
static __inline__ void
_delay_loop_2(uint16_t __count)
{
	__asm__ volatile (
  b0:	cd 01       	movw	r24, r26
  b2:	01 97       	sbiw	r24, 0x01	; 1
  b4:	f1 f7       	brne	.-4      	; 0xb2
		for (k=0;k<10;k++) _delay_ms(3);	//延时 30*10=300毫秒，可自行调节
  b6:	21 50       	subi	r18, 0x01	; 1
  b8:	27 ff       	sbrs	r18, 7
  ba:	fa cf       	rjmp	.-12     	; 0xb0
		i=i<<1;			//左移一位
  bc:	44 0f       	add	r20, r20
  be:	3f 5f       	subi	r19, 0xFF	; 255
  c0:	38 30       	cpi	r19, 0x08	; 8
  c2:	90 f3       	brcs	.-28     	; 0xa8
  c4:	ef cf       	rjmp	.-34     	; 0xa4