diy0816-05.lst

AVR单片机应用开发指南及实例,包含许多实例,挺不错

__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 36E1      CPI	R30,0x61
    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 940E007D  CALL	_main
_exit:
    004A CFFF      RJMP	_exit
FILE: D:\SL-DIY~1\diy0208_16_5\diy0816_05.c
(0001) //5.	用一个I/O端口控制二个I/O端口。
(0002) //ATmega16的PB.0端口开关(可用接插线接VCC或GND代替)
(0003) //控制PA.0,PA.1两端口LED灯轮流闪烁; 
(0004) //LED灯轮流闪烁可模拟动物的眼睛闪烁玩具使用。
(0005) //如果用ATmega16的PA.0端口开关控制PB.0,PB.1两端口LED灯轮流闪烁,
(0006) //你应该怎样来修改程序。
(0007) //     www.sl.com.cn
(0008) //     [e-mail]    05-11-12
(0009) // Target : mega16     Crystal: 8.0000Mhz
(0010) 
(0011) #include <iom16v.h>
(0012) #include <macros.h>
(0013) 
(0014) #define delay_time 500
(0015)      //delay_time=500，定义延时常量
(0016) unsigned char pb_buf;
(0017) 
(0018) void delay_us(int time)
(0019) {   //微秒延时       
(0020)  do
(0021)  {
(0022)   time--;
_delay_us:
  time                 --> R16
    004B 5001      SUBI	R16,1
    004C 4010      SBCI	R17,0
(0023)  }	
(0024)   while (time>1);
    004D E081      LDI	R24,1
    004E E090      LDI	R25,0
    004F 1780      CP	R24,R16
    0050 0791      CPC	R25,R17
    0051 F3CC      BLT	0x004B
    0052 9508      RET
_delay_ms:
  time                 --> R20
    0053 940E0087  CALL	push_gset1
    0055 01A8      MOVW	R20,R16
(0025) }	  
(0026) 
(0027) void delay_ms(unsigned int time)
(0028) {   //毫秒延时
    0056 C005      RJMP	0x005C
(0029)  while(time!=0)
(0030)  {		
(0031)   delay_us(1000);
    0057 EE08      LDI	R16,0xE8
    0058 E013      LDI	R17,3
    0059 DFF1      RCALL	_delay_us
(0032)   time--;
    005A 5041      SUBI	R20,1
    005B 4050      SBCI	R21,0
    005C 3040      CPI	R20,0
    005D 0745      CPC	R20,R21
    005E F7C1      BNE	0x0057
    005F 940E008A  CALL	pop_gset1
    0061 9508      RET
(0033)  }
(0034) }		
(0035) 
(0036) void shiyan5()
(0037) {
(0038)  DDRB=0x00;PORTB=0xFF;//PB口输入，内部上拉
_shiyan5:
    0062 2422      CLR	R2
    0063 BA27      OUT	0x17,R2
    0064 EF8F      LDI	R24,0xFF
    0065 BB88      OUT	0x18,R24
(0039)  DDRA=0xFF;PORTA=0xFF;//PA口输出
    0066 BB8A      OUT	0x1A,R24
    0067 BB8B      OUT	0x1B,R24
    0068 C012      RJMP	0x007B
(0040)  while(1)//循环运行
(0041)  {
(0042)   pb_buf=PINB & 0x01;//检测PINB0是否为0，为1重新检测
    0069 B386      IN	R24,0x16
    006A 7081      ANDI	R24,1
    006B 93800060  STS	pb_buf,R24
(0043)   if(pb_buf==0x00)//为0，PA0和PA1的两LED交替闪烁
    006D 2388      TST	R24
    006E F451      BNE	0x0079
(0044)   {
(0045)    PORTA=0xfe;//只让PA0的LED亮
    006F EF8E      LDI	R24,0xFE
    0070 BB8B      OUT	0x1B,R24
(0046)    delay_ms(delay_time);//延时
    0071 EF04      LDI	R16,0xF4
    0072 E011      LDI	R17,1
    0073 DFDF      RCALL	_delay_ms
(0047)    PORTA = 0xfd;//只让PA1的LED亮
    0074 EF8D      LDI	R24,0xFD
    0075 BB8B      OUT	0x1B,R24
(0048)    delay_ms(delay_time);//延时
    0076 EF04      LDI	R16,0xF4
    0077 E011      LDI	R17,1
    0078 DFDA      RCALL	_delay_ms
(0049)   }//重新检测
(0050)   PORTA=0xff;//为1，熄灭PA口的所有LED
    0079 EF8F      LDI	R24,0xFF
    007A BB8B      OUT	0x1B,R24
    007B CFED      RJMP	0x0069
    007C 9508      RET
(0051)  }
(0052) }
(0053) 
(0054) void main()
(0055) {
(0056)  shiyan5();//实验5函数
FILE: <library>
_main:
    007D DFE4      RCALL	_shiyan5
    007E 9508      RET
push_gset5:
    007F 92FA      ST	R15,-Y
    0080 92EA      ST	R14,-Y
push_gset4:
    0081 92DA      ST	R13,-Y
    0082 92CA      ST	R12,-Y
push_gset3:
    0083 92BA      ST	R11,-Y
    0084 92AA      ST	R10,-Y
push_gset2:
    0085 937A      ST	R23,-Y
    0086 936A      ST	R22,-Y
push_gset1:
    0087 935A      ST	R21,-Y
    0088 934A      ST	R20,-Y
    0089 9508      RET
pop_gset1:
    008A E0E1      LDI	R30,1
pop:
    008B 9149      LD	R20,Y+
    008C 9159      LD	R21,Y+
    008D FDE0      SBRC	R30,0
    008E 9508      RET
    008F 9169      LD	R22,Y+
    0090 9179      LD	R23,Y+
    0091 FDE1      SBRC	R30,1
    0092 9508      RET
    0093 90A9      LD	R10,Y+
    0094 90B9      LD	R11,Y+
    0095 FDE2      SBRC	R30,2
    0096 9508      RET
    0097 90C9      LD	R12,Y+
    0098 90D9      LD	R13,Y+
    0099 FDE3      SBRC	R30,3
    009A 9508      RET
    009B 90E9      LD	R14,Y+
    009C 90F9      LD	R15,Y+
    009D 9508      RET