uart.lss

avr串口实验,并且带有硬件原理图

uart.elf:     file format elf32-avr

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         00000130  00000000  00000000  00000094  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .data         00000006  00800060  00000130  000001c4  2**0
                  CONTENTS, ALLOC, LOAD, DATA
  2 .bss          00000000  00800066  00000136  000001ca  2**0
                  ALLOC
  3 .noinit       00000000  00800066  00800066  000001ca  2**0
                  CONTENTS
  4 .eeprom       00000000  00810000  00810000  000001ca  2**0
                  CONTENTS
  5 .debug_aranges 00000014  00000000  00000000  000001ca  2**0
                  CONTENTS, READONLY, DEBUGGING
  6 .debug_pubnames 0000004d  00000000  00000000  000001de  2**0
                  CONTENTS, READONLY, DEBUGGING
  7 .debug_info   000000f9  00000000  00000000  0000022b  2**0
                  CONTENTS, READONLY, DEBUGGING
  8 .debug_abbrev 00000085  00000000  00000000  00000324  2**0
                  CONTENTS, READONLY, DEBUGGING
  9 .debug_line   00000107  00000000  00000000  000003a9  2**0
                  CONTENTS, READONLY, DEBUGGING
 10 .debug_str    00000085  00000000  00000000  000004b0  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 67 00 	jmp	0xce
  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:	e0 e3       	ldi	r30, 0x30	; 48
  68:	f1 e0       	ldi	r31, 0x01	; 1
  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:	a6 36       	cpi	r26, 0x66	; 102
  72:	b1 07       	cpc	r27, r17
  74:	d9 f7       	brne	.-10     	; 0x6c

00000076 <__do_clear_bss>:
  76:	10 e0       	ldi	r17, 0x00	; 0
  78:	a6 e6       	ldi	r26, 0x66	; 102
  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:	a6 36       	cpi	r26, 0x66	; 102
  82:	b1 07       	cpc	r27, r17
  84:	e1 f7       	brne	.-8      	; 0x7e
  86:	0c 94 8c 00 	jmp	0x118

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

0000008e <uart_init>:
#define BAUD  9600
#define uchar unsigned char
void uart_init(void)
{
 	 UCSRC = (1<<URSEL) | 0x06;
  8e:	86 e8       	ldi	r24, 0x86	; 134
  90:	80 bd       	out	0x20, r24	; 32
	 UBRRL=(F_CPU/BAUD/16-1)%256;
  92:	83 e3       	ldi	r24, 0x33	; 51
  94:	89 b9       	out	0x09, r24	; 9
	 UBRRH=(F_CPU/BAUD/16-1)/256;
  96:	10 bc       	out	0x20, r1	; 32
	 UCSRA=0X00;
  98:	1b b8       	out	0x0b, r1	; 11
	 UCSRB = (1<<RXCIE)|(1<<RXEN)|(1<<TXEN);
  9a:	88 e9       	ldi	r24, 0x98	; 152
  9c:	8a b9       	out	0x0a, r24	; 10
  9e:	08 95       	ret

000000a0 <put_c>:
}

void put_c(unsigned char c) //发送采用查询方式
{
	while( !(UCSRA & (1<<UDRE)) );
  a0:	5d 9b       	sbis	0x0b, 5	; 11
  a2:	fe cf       	rjmp	.-4      	; 0xa0
	UDR=c;
  a4:	8c b9       	out	0x0c, r24	; 12
  a6:	08 95       	ret

000000a8 <put_s>:
}

void put_s(unsigned char *ptr)
{
  a8:	cf 93       	push	r28
  aa:	df 93       	push	r29
  ac:	ec 01       	movw	r28, r24
	while (*ptr)
	{
		put_c(*ptr++);
  ae:	88 81       	ld	r24, Y
  b0:	88 23       	and	r24, r24
  b2:	21 f0       	breq	.+8      	; 0xbc
  b4:	89 91       	ld	r24, Y+
  b6:	0e 94 50 00 	call	0xa0
  ba:	f9 cf       	rjmp	.-14     	; 0xae
	}
	put_c(0x0D);
  bc:	8d e0       	ldi	r24, 0x0D	; 13
  be:	0e 94 50 00 	call	0xa0
	put_c(0x0A);  //结尾发送回车换行
  c2:	8a e0       	ldi	r24, 0x0A	; 10
  c4:	0e 94 50 00 	call	0xa0
  c8:	df 91       	pop	r29
  ca:	cf 91       	pop	r28
  cc:	08 95       	ret

000000ce <__vector_11>:
}

SIGNAL(SIG_USART_RECV)
{
  ce:	1f 92       	push	r1
  d0:	0f 92       	push	r0
  d2:	0f b6       	in	r0, 0x3f	; 63
  d4:	0f 92       	push	r0
  d6:	11 24       	eor	r1, r1
  d8:	2f 93       	push	r18
  da:	3f 93       	push	r19
  dc:	4f 93       	push	r20
  de:	5f 93       	push	r21
  e0:	6f 93       	push	r22
  e2:	7f 93       	push	r23
  e4:	8f 93       	push	r24
  e6:	9f 93       	push	r25
  e8:	af 93       	push	r26
  ea:	bf 93       	push	r27
  ec:	ef 93       	push	r30
  ee:	ff 93       	push	r31
	put_c(UDR);
  f0:	8c b1       	in	r24, 0x0c	; 12
  f2:	0e 94 50 00 	call	0xa0
  f6:	ff 91       	pop	r31
  f8:	ef 91       	pop	r30
  fa:	bf 91       	pop	r27
  fc:	af 91       	pop	r26
  fe:	9f 91       	pop	r25
 100:	8f 91       	pop	r24
 102:	7f 91       	pop	r23
 104:	6f 91       	pop	r22
 106:	5f 91       	pop	r21
 108:	4f 91       	pop	r20
 10a:	3f 91       	pop	r19
 10c:	2f 91       	pop	r18
 10e:	0f 90       	pop	r0
 110:	0f be       	out	0x3f, r0	; 63
 112:	0f 90       	pop	r0
 114:	1f 90       	pop	r1
 116:	18 95       	reti

00000118 <main>:
}

int main(void)
{
 118:	cf e5       	ldi	r28, 0x5F	; 95
 11a:	d4 e0       	ldi	r29, 0x04	; 4
 11c:	de bf       	out	0x3e, r29	; 62
 11e:	cd bf       	out	0x3d, r28	; 61
	 uart_init();
 120:	0e 94 47 00 	call	0x8e
	 put_s("1111");
 124:	80 e6       	ldi	r24, 0x60	; 96
 126:	90 e0       	ldi	r25, 0x00	; 0
 128:	0e 94 54 00 	call	0xa8
	 sei();
 12c:	78 94       	sei
	 while(1);
 12e:	ff cf       	rjmp	.-2      	; 0x12e