tc0_6.lss
来自「arm的功能测试模块」· LSS 代码 · 共 212 行
LSS
212 行
TC0_6.elf: file format elf32-avr
Sections:
Idx Name Size VMA LMA File off Algn
0 .text 0000015c 00000000 00000000 00000094 2**0
CONTENTS, ALLOC, LOAD, READONLY, CODE
1 .data 00000000 00800060 0000015c 000001f0 2**0
CONTENTS, ALLOC, LOAD, DATA
2 .bss 00000001 00800060 00800060 000001f0 2**0
ALLOC
3 .noinit 00000000 00800061 00800061 000001f0 2**0
CONTENTS
4 .eeprom 00000000 00810000 00810000 000001f0 2**0
CONTENTS
5 .debug_aranges 00000014 00000000 00000000 000001f0 2**0
CONTENTS, READONLY, DEBUGGING
6 .debug_pubnames 00000044 00000000 00000000 00000204 2**0
CONTENTS, READONLY, DEBUGGING
7 .debug_info 00000160 00000000 00000000 00000248 2**0
CONTENTS, READONLY, DEBUGGING
8 .debug_abbrev 0000005c 00000000 00000000 000003a8 2**0
CONTENTS, READONLY, DEBUGGING
9 .debug_line 0000012d 00000000 00000000 00000404 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 67 00 jmp 0xce
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: ec e5 ldi r30, 0x5C ; 92
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: 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: a1 36 cpi r26, 0x61 ; 97
82: b1 07 cpc r27, r17
84: e1 f7 brne .-8 ; 0x7e
86: 0c 94 a6 00 jmp 0x14c
0000008a <__bad_interrupt>:
8a: 0c 94 00 00 jmp 0x0
0000008e <init_timer0>:
uchar temp;
//对于T/C0的比较匹配输出初始化
void init_timer0(void)
{DDRB|=(1<<PB3); //PB3（oc0）引脚定义为输出
8e: cf 93 push r28
90: df 93 push r29
92: cd b7 in r28, 0x3d ; 61
94: de b7 in r29, 0x3e ; 62
96: 80 91 37 00 lds r24, 0x0037
9a: 88 60 ori r24, 0x08 ; 8
9c: 80 93 37 00 sts 0x0037, r24
TCCR0=0X1c; //T0 256分频， CTC 模式(WGM01:0 = 2)，比较匹配时OC0引脚取反
a0: 8c e1 ldi r24, 0x1C ; 28
a2: 80 93 53 00 sts 0x0053, r24
OCR0=0X7F; //在CTC 模式(WGM01:0 = 2) 下OCR0 寄存器用于调节计数器的分辨率。当计数器的数值
a6: 8f e7 ldi r24, 0x7F ; 127
a8: 80 93 5c 00 sts 0x005C, r24
// TCNT0等于OCR0时计数器清零。OCR0定义了计数器的TOP值，亦即计数器的分辨率。
temp=OCR0;
ac: 80 91 5c 00 lds r24, 0x005C
b0: 80 93 60 00 sts 0x0060, r24
TIFR|=(1<<OCF0); //对输出比较匹配标志写1清零
b4: 80 91 58 00 lds r24, 0x0058
b8: 82 60 ori r24, 0x02 ; 2
ba: 80 93 58 00 sts 0x0058, r24
TIMSK|=(1<<OCIE0); //使能输出比较匹配功能
be: 80 91 59 00 lds r24, 0x0059
c2: 82 60 ori r24, 0x02 ; 2
c4: 80 93 59 00 sts 0x0059, r24
c8: df 91 pop r29
ca: cf 91 pop r28
cc: 08 95 ret
000000ce <__vector_19>:
}
SIGNAL (SIG_OUTPUT_COMPARE0) //T/C0输出比较匹配中断服务程序
{
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: 8f 93 push r24
de: 9f 93 push r25
e0: cf 93 push r28
e2: df 93 push r29
e4: cd b7 in r28, 0x3d ; 61
e6: de b7 in r29, 0x3e ; 62
e8: 22 97 sbiw r28, 0x02 ; 2
ea: de bf out 0x3e, r29 ; 62
ec: cd bf out 0x3d, r28 ; 61
switch(temp)
ee: 80 91 60 00 lds r24, 0x0060
f2: 28 2f mov r18, r24
f4: 33 27 eor r19, r19
f6: 29 83 std Y+1, r18 ; 0x01
f8: 3a 83 std Y+2, r19 ; 0x02
fa: 89 81 ldd r24, Y+1 ; 0x01
fc: 9a 81 ldd r25, Y+2 ; 0x02
fe: 8f 33 cpi r24, 0x3F ; 63
100: 91 05 cpc r25, r1
102: 71 f0 breq .+28 ; 0x120
104: 29 81 ldd r18, Y+1 ; 0x01
106: 3a 81 ldd r19, Y+2 ; 0x02
108: 2f 37 cpi r18, 0x7F ; 127
10a: 31 05 cpc r19, r1
10c: 09 f0 breq .+2 ; 0x110
10e: 0f c0 rjmp .+30 ; 0x12e
{
case 0x7F: OCR0=0X3F; temp=OCR0;break; // 改变OCR0的值,从而该变方波周期
110: 8f e3 ldi r24, 0x3F ; 63
112: 80 93 5c 00 sts 0x005C, r24
116: 80 91 5c 00 lds r24, 0x005C
11a: 80 93 60 00 sts 0x0060, r24
11e: 07 c0 rjmp .+14 ; 0x12e
case 0x3F: OCR0=0X7F; temp=OCR0;break;
120: 8f e7 ldi r24, 0x7F ; 127
122: 80 93 5c 00 sts 0x005C, r24
126: 80 91 5c 00 lds r24, 0x005C
12a: 80 93 60 00 sts 0x0060, r24
12e: 22 96 adiw r28, 0x02 ; 2
130: f8 94 cli
132: de bf out 0x3e, r29 ; 62
134: cd bf out 0x3d, r28 ; 61
136: df 91 pop r29
138: cf 91 pop r28
13a: 9f 91 pop r25
13c: 8f 91 pop r24
13e: 3f 91 pop r19
140: 2f 91 pop r18
142: 0f 90 pop r0
144: 0f be out 0x3f, r0 ; 63
146: 0f 90 pop r0
148: 1f 90 pop r1
14a: 18 95 reti
0000014c <main>:
default: break;
}
}
int main(void)
{
14c: cf e5 ldi r28, 0x5F ; 95
14e: d4 e0 ldi r29, 0x04 ; 4
150: de bf out 0x3e, r29 ; 62
152: cd bf out 0x3d, r28 ; 61
init_timer0();
154: 0e 94 47 00 call 0x8e
sei();
158: 78 94 sei
while(1){;}
15a: ff cf rjmp .-2 ; 0x15a
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