diy0816-03.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 940E0058  CALL	_main
_exit:
    004A CFFF      RJMP	_exit
FILE: D:\SL-DIY~1\diy0208_16_3\diy0816_03.c
(0001) //3.	I/O端口一对一控制。
(0002) //ATmega16的PB口8个开关控制PA口8个LED灯亮与灭;
(0003) //请你修改程序, 
(0004) //用ATmega16的PD口8个开关(可用接插线接VCC或GND代替)控制PB口8个LED灯亮与灭。
(0005) //     www.sl.com.cn
(0006) //     [e-mail]    05-11-12
(0007) // Target : mega16     Crystal: 8.0000Mhz
(0008) 
(0009) #include <iom16v.h>
(0010) #include <macros.h>
(0011) 
(0012) unsigned char pb_buf;
(0013) 		 //定义无符号字符型变量
(0014) void shiyan3()
(0015) {
(0016)  DDRB=0x00;PORTB=0xFF;//PB口输入，内部上拉
_shiyan3:
    004B 2422      CLR	R2
    004C BA27      OUT	0x17,R2
    004D EF8F      LDI	R24,0xFF
    004E BB88      OUT	0x18,R24
(0017)  DDRA=0xFF;PORTA=0xFF;//PA口输出
    004F BB8A      OUT	0x1A,R24
    0050 BB8B      OUT	0x1B,R24
    0051 C004      RJMP	0x0056
(0018)  while(1)			  //循环运行
(0019)  {
(0020)   pb_buf=PINB;        //读取PB口的管脚状态
    0052 B226      IN	R2,0x16
    0053 92200060  STS	pb_buf,R2
(0021)   PORTA=pb_buf;		  //PA口输出此状态，实现一对一控制
    0055 BA2B      OUT	0x1B,R2
    0056 CFFB      RJMP	0x0052
    0057 9508      RET
(0022)  } 
(0023) }
(0024) 
(0025) void main()
(0026) {
(0027)  shiyan3();			  //实验3函数
FILE: <library>
_main:
    0058 DFF2      RCALL	_shiyan3
    0059 9508      RET