main.lst

一个关于AVR单片机的例程

__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 940E006B  CALL	_main
_exit:
    004A CFFF      RJMP	_exit
FILE: C:\DOCUME~1\administrator\桌面\教程\LED应用\红绿灯闪烁\main.c
(0001) //ICC-AVR application builder : 2006-12-9 下午 01:03:41
(0002) // Target : M16
(0003) // Crystal: 1.0000Mhz
(0004) 
(0005) #include <iom16v.h>
(0006) #include <macros.h>
(0007) void port_init(void)
(0008) {
(0009) PORTA = 0x03;
_port_init:
    004B E083      LDI	R24,3
    004C BB8B      OUT	0x1B,R24
(0010) DDRA = 0x03;
    004D BB8A      OUT	0x1A,R24
(0011) PORTB = 0x00;
    004E 2422      CLR	R2
    004F BA28      OUT	0x18,R2
(0012) DDRB = 0x00;
    0050 BA27      OUT	0x17,R2
(0013) PORTC = 0x00; //m103 output only
    0051 BA25      OUT	0x15,R2
(0014) DDRC = 0x00;
    0052 BA24      OUT	0x14,R2
(0015) PORTD = 0x00;
    0053 BA22      OUT	0x12,R2
(0016) DDRD = 0x00;
    0054 BA21      OUT	0x11,R2
    0055 9508      RET
(0017) }
(0018) 
(0019) //call this routine to initialize all peripherals
(0020) void init_devices(void)
(0021) {
(0022) //stop errant interrupts until set up
(0023) CLI(); //disable all interrupts
_init_devices:
    0056 94F8      BCLR	7
(0024) port_init();
    0057 DFF3      RCALL	_port_init
(0025) MCUCR = 0x00;
    0058 2422      CLR	R2
    0059 BE25      OUT	0x35,R2
(0026) GICR = 0x00;
    005A BE2B      OUT	0x3B,R2
(0027) TIMSK = 0x00; //timer interrupt sources
    005B BE29      OUT	0x39,R2
(0028) SEI(); //re-enable interrupts
    005C 9478      BSET	7
    005D 9508      RET
(0029) //all peripherals are now initialized
(0030) }
(0031) 
(0032) void Delay(void)
(0033) {
(0034) unsigned char i,j;
(0035) for(i=200;i>0;i--)
_Delay:
  i                    --> R16
  j                    --> R18
    005E EC08      LDI	R16,0xC8
    005F C007      RJMP	0x0067
(0036) {
(0037)   for(j=200;j>0;j--)
    0060 EC28      LDI	R18,0xC8
    0061 C001      RJMP	0x0063
    0062 952A      DEC	R18
    0063 2422      CLR	R2
    0064 1622      CP	R2,R18
    0065 F3E0      BCS	0x0062
    0066 950A      DEC	R16
    0067 2422      CLR	R2
    0068 1620      CP	R2,R16
    0069 F3B0      BCS	0x0060
    006A 9508      RET
(0038)   ;
(0039) }
(0040) }
(0041) 
(0042) void main(void)
(0043) {
(0044) 
(0045) init_devices();       //初始化
_main:
    006B DFEA      RCALL	_init_devices
    006C C006      RJMP	0x0073
(0046) 
(0047) while(1)
(0048) {
(0049) PORTB = 0x02;     //1脚为高，0脚为低，0脚灯亮
    006D E082      LDI	R24,2
    006E BB88      OUT	0x18,R24
(0050) Delay();     //延时
    006F DFEE      RCALL	_Delay
(0051) PORTB = 0x01;       //0脚为高，1脚为低，1脚灯亮
    0070 E081      LDI	R24,1
    0071 BB88      OUT	0x18,R24
(0052) Delay();     //延时
FILE: <library>
    0072 DFEB      RCALL	_Delay
    0073 CFF9      RJMP	0x006D
    0074 9508      RET