📄 006.lst
字号:
__text_start:
__start:
002A E5CF LDI R28,0x5F
002B E0D4 LDI R29,4
002C BFCD OUT 0x3D,R28
002D BFDE OUT 0x3E,R29
002E 51C0 SUBI R28,0x10
002F 40D0 SBCI R29,0
0030 EA0A LDI R16,0xAA
0031 8308 STD Y+0,R16
0032 2400 CLR R0
0033 E6E0 LDI R30,0x60
0034 E0F0 LDI R31,0
0035 E010 LDI R17,0
0036 36E0 CPI R30,0x60
0037 07F1 CPC R31,R17
0038 F011 BEQ 0x003B
0039 9201 ST R0,Z+
003A CFFB RJMP 0x0036
003B 8300 STD Z+0,R16
003C E5E4 LDI R30,0x54
003D E0F0 LDI R31,0
003E E6A0 LDI R26,0x60
003F E0B0 LDI R27,0
0040 E010 LDI R17,0
0041 35E4 CPI R30,0x54
0042 07F1 CPC R31,R17
0043 F021 BEQ 0x0048
0044 95C8 LPM
0045 9631 ADIW R30,1
0046 920D ST R0,X+
0047 CFF9 RJMP 0x0041
0048 940E005A CALL _main
_exit:
004A CFFF RJMP _exit
_delay_ms:
a --> R20
b --> R22
i --> R16
004B 940E009F CALL push_gset2
FILE: E:\ICCAVR\project\AVRMEG~2\icc\006-INT0-LED\main.c
(0001) /*
(0002) 实验六:
(0003) INT0中断实验。
(0004) 1、按键中断实验。低电平中断,在中断中改变PB1电平状态。
(0005) 2、内部1 M晶振,程序采用单任务方式,软件延时。
(0006) 3、进行此实验请插上JP1的所有8个短路块,JP7(LED_EN)短路块。
(0007)
(0008) AVR mega16学习板
(0009) www.iccavr.com
(0010) 2006-03-23
(0011) */
(0012)
(0013) #include "iom16v.h"
(0014) #include <macros.h>
(0015)
(0016) /*延时函数*/
(0017) void delay_ms(unsigned char i) {
(0018)
(0019) unsigned char a, b;
(0020) for (a = 1; a < i; a++) {
004D E041 LDI R20,1
004E C006 RJMP 0x0055
(0021) for (b = 1; b; b++) {
004F E061 LDI R22,1
0050 C001 RJMP 0x0052
0051 9563 INC R22
0052 2366 TST R22
0053 F7E9 BNE 0x0051
0054 9543 INC R20
0055 1740 CP R20,R16
0056 F3C0 BCS 0x004F
0057 940E0096 CALL pop_gset2
0059 9508 RET
(0022) ;
(0023) }
(0024) }
(0025) }
(0026)
(0027) void main(void) {
(0028)
(0029) DDRA = 0x00; /*方向输入*/
_main:
005A 2422 CLR R2
005B BA2A OUT 0x1A,R2
(0030) PORTA = 0xFF; /*打开上拉*/
005C EF8F LDI R24,0xFF
005D BB8B OUT 0x1B,R24
(0031) DDRB = 0xFF; /*方向输出*/
005E BB87 OUT 0x17,R24
(0032) PORTB = 0xFF; /*电平设置*/
005F BB88 OUT 0x18,R24
(0033) DDRC = 0x00;
0060 BA24 OUT 0x14,R2
(0034) PORTC = 0xFF;
0061 BB85 OUT 0x15,R24
(0035) DDRD = 0x00;
0062 BA21 OUT 0x11,R2
(0036) PORTD = 0xFF;
0063 BB82 OUT 0x12,R24
(0037)
(0038) GICR |= (1 << INT0);
0064 B78B IN R24,0x3B
0065 6480 ORI R24,0x40
0066 BF8B OUT 0x3B,R24
(0039) SEI();
0067 9478 BSET 7
0068 C006 RJMP 0x006F
(0040)
(0041) while (1) {
(0042) delay_ms(200);
0069 EC08 LDI R16,0xC8
006A DFE0 RCALL _delay_ms
(0043) PORTB ^= (1 << 0); /*PB0电平取反*/
006B E081 LDI R24,1
006C B228 IN R2,0x18
006D 2628 EOR R2,R24
006E BA28 OUT 0x18,R2
006F CFF9 RJMP 0x0069
0070 9508 RET
_Int0:
i --> R16
0071 922A ST R2,-Y
0072 930A ST R16,-Y
0073 931A ST R17,-Y
0074 938A ST R24,-Y
0075 939A ST R25,-Y
0076 B62F IN R2,0x3F
0077 922A ST R2,-Y
(0044) }
(0045) }
(0046)
(0047) #pragma interrupt_handler Int0: 2 /*外部中断INT0*/
(0048) void Int0(void) {
(0049) unsigned int i;
(0050) PORTB ^= (1 << 1); /*PB1电平取反*/
0078 E082 LDI R24,2
0079 B228 IN R2,0x18
007A 2628 EOR R2,R24
007B BA28 OUT 0x18,R2
(0051) i = 1000; /*加入廷时防按键颤动*/
007C EE08 LDI R16,0xE8
007D E013 LDI R17,3
(0052) while (--i);
007E 01C8 MOVW R24,R16
007F 9701 SBIW R24,1
0080 018C MOVW R16,R24
0081 3000 CPI R16,0
0082 0701 CPC R16,R17
0083 F7D1 BNE 0x007E
(0053) while ((PIND & (1 << PD2)) == 0); /*等待按键松开*/
0084 9B82 SBIS 0x10,2
0085 CFFE RJMP 0x0084
(0054) i = 1000; /*加入廷时防按键颤动*/
0086 EE08 LDI R16,0xE8
0087 E013 LDI R17,3
(0055) while (--i);
FILE: <library>
0088 01C8 MOVW R24,R16
0089 9701 SBIW R24,1
008A 018C MOVW R16,R24
008B 3000 CPI R16,0
008C 0701 CPC R16,R17
008D F7D1 BNE 0x0088
008E 9029 LD R2,Y+
008F BE2F OUT 0x3F,R2
0090 9199 LD R25,Y+
0091 9189 LD R24,Y+
0092 9119 LD R17,Y+
0093 9109 LD R16,Y+
0094 9029 LD R2,Y+
0095 9518 RETI
pop_gset2:
0096 E0E2 LDI R30,2
0097 940C00A5 JMP pop
push_gset5:
0099 92FA ST R15,-Y
009A 92EA ST R14,-Y
push_gset4:
009B 92DA ST R13,-Y
009C 92CA ST R12,-Y
push_gset3:
009D 92BA ST R11,-Y
009E 92AA ST R10,-Y
push_gset2:
009F 937A ST R23,-Y
00A0 936A ST R22,-Y
push_gset1:
00A1 935A ST R21,-Y
00A2 934A ST R20,-Y
00A3 9508 RET
pop_gset1:
00A4 E0E1 LDI R30,1
pop:
00A5 9149 LD R20,Y+
00A6 9159 LD R21,Y+
00A7 FDE0 SBRC R30,0
00A8 9508 RET
00A9 9169 LD R22,Y+
00AA 9179 LD R23,Y+
00AB FDE1 SBRC R30,1
00AC 9508 RET
00AD 90A9 LD R10,Y+
00AE 90B9 LD R11,Y+
00AF FDE2 SBRC R30,2
00B0 9508 RET
00B1 90C9 LD R12,Y+
00B2 90D9 LD R13,Y+
00B3 FDE3 SBRC R30,3
00B4 9508 RET
00B5 90E9 LD R14,Y+
00B6 90F9 LD R15,Y+
00B7 9508 RET
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