diy0816-01.lst

AVR单片机应用开发指南及实例,包含许多实例,挺不错

__start:
__text_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 940E0062  CALL	_main
_exit:
    004A CFFF      RJMP	_exit
FILE: D:\SL-DIY~1\diy0208_16\diy0816-01.c
(0001) //1.	I/O端口作输入或输出实验。
(0002) //ATmega16的PB.0端口开关(可用接插线接VCC或GND代替,红色箭头表示本实验连线,
(0003) //     www.sl.com.cn
(0004) //     [e-mail]    05-11-12
(0005) // Target : mage16     Crystal: 8.0000Mhz
(0006) 
(0007) #include <iom16v.h>
(0008) #include <macros.h> 
(0009) 
(0010) unsigned char pb_buf;//定义为字符型变量
(0011) 
(0012) void shiyan1()
(0013) {
(0014)  DDRB=0x00;PORTB=0xFF;//PB口输入，内部上拉
_shiyan1:
    004B 2422      CLR	R2
    004C BA27      OUT	0x17,R2
    004D EF8F      LDI	R24,0xFF
    004E BB88      OUT	0x18,R24
(0015)  DDRA=0xFF;PORTA=0xFF;//PA口输出
    004F BB8A      OUT	0x1A,R24
    0050 BB8B      OUT	0x1B,R24
    0051 C00E      RJMP	0x0060
(0016)  while(1)			  //循环运行
(0017) {
(0018)   pb_buf=PINB;
    0052 B226      IN	R2,0x16
    0053 92200060  STS	pb_buf,R2
(0019)   pb_buf=pb_buf & 0x01;//检测PINB0是否为低电平 0
    0055 2D82      MOV	R24,R2
    0056 7081      ANDI	R24,1
    0057 93800060  STS	pb_buf,R24
(0020)   if(pb_buf==0x00)
    0059 2388      TST	R24
    005A F419      BNE	0x005E
(0021)   PORTA=0xfe;//为0，PA0输出低电平，点亮LED
    005B EF8E      LDI	R24,0xFE
    005C BB8B      OUT	0x1B,R24
    005D C002      RJMP	0x0060
(0022)   else PORTA = 0xff;//为1，PA0输出高电平，熄灭LED
    005E EF8F      LDI	R24,0xFF
    005F BB8B      OUT	0x1B,R24
    0060 CFF1      RJMP	0x0052
    0061 9508      RET
(0023)  }
(0024) }
(0025) 
(0026) void main()
(0027) {
(0028)  shiyan1();//实验1函数
FILE: <library>
_main:
    0062 DFE8      RCALL	_shiyan1
    0063 9508      RET