t1_bell.lst

学习AVR单片机的基础实验程序 适合初学者学习提高

__start:
__text_start:
    002B E5CF      LDI	R28,0x5F
    002C E0D4      LDI	R29,4
    002D BFCD      OUT	0x3D,R28
    002E BFDE      OUT	0x3E,R29
    002F 51C0      SUBI	R28,0x10
    0030 40D0      SBCI	R29,0
    0031 EA0A      LDI	R16,0xAA
    0032 8308      STD	Y+0,R16
    0033 2400      CLR	R0
    0034 E6E2      LDI	R30,0x62
    0035 E0F0      LDI	R31,0
    0036 E010      LDI	R17,0
    0037 36E2      CPI	R30,0x62
    0038 07F1      CPC	R31,R17
    0039 F011      BEQ	0x003C
    003A 9201      ST	R0,Z+
    003B CFFB      RJMP	0x0037
    003C 8300      STD	Z+0,R16
    003D E5E4      LDI	R30,0x54
    003E E0F0      LDI	R31,0
    003F E6A0      LDI	R26,0x60
    0040 E0B0      LDI	R27,0
    0041 E010      LDI	R17,0
    0042 35E6      CPI	R30,0x56
    0043 07F1      CPC	R31,R17
    0044 F021      BEQ	0x0049
    0045 95C8      LPM
    0046 9631      ADIW	R30,1
    0047 920D      ST	R0,X+
    0048 CFF9      RJMP	0x0042
    0049 940E007D  CALL	_main
_exit:
    004B CFFF      RJMP	_exit
FILE: D:\AVR\我的程序\定时器1的普通模式实验\cfg.h
(0001) /*******************************
(0002) *程序名称：各功能函数
(0003) *作    者：萧联珠
(0004) *日    期：2007-11-20
(0005) ********************************/
(0006) #include <iom16v.h>
(0007) int flag_bell=0;
(0008) 
(0009) /*端口初始化*/
(0010) void port_init()    //端口初始化
(0011) {
(0012)   DDRD|=(1<<DDD5);  //配置PD5口为输出
_port_init:
    004C 9A8D      SBI	0x11,5
(0013)   PORTD|=(1<<PD5);  //PD5口的初始值为"1"
    004D 9A95      SBI	0x12,5
    004E 9508      RET
(0014) }
(0015) 
(0016) /*定时器1初始化*/
(0017) void timer1_init()
(0018) {
(0019)  SREG=0x80;          //使能全局中断
_timer1_init:
    004F E880      LDI	R24,0x80
    0050 BF8F      OUT	0x3F,R24
(0020)  TIMSK=(1<<TOIE1);  //使能定时溢出中断
    0051 E084      LDI	R24,4
    0052 BF89      OUT	0x39,R24
(0021)  TCCR1A=0x00;       //配置定时器工作在普通模式
    0053 2422      CLR	R2
    0054 BC2F      OUT	0x2F,R2
(0022)  TCCR1B=0x01;       //无分频
    0055 E081      LDI	R24,1
    0056 BD8E      OUT	0x2E,R24
    0057 9508      RET
_Timer1_ovf:
    0058 922A      ST	R2,-Y
    0059 923A      ST	R3,-Y
    005A 938A      ST	R24,-Y
    005B 939A      ST	R25,-Y
    005C 93EA      ST	R30,-Y
    005D B62F      IN	R2,0x3F
    005E 922A      ST	R2,-Y
(0023) }
(0024) 
(0025) /*定时器1中断服务程序*/
(0026) #pragma interrupt_handler Timer1_ovf:9
(0027) void Timer1_ovf(void)
(0028) { 
(0029)   flag_bell=flag_bell+1;
    005F 91800060  LDS	R24,flag_bell
    0061 91900061  LDS	R25,flag_bell+1
    0063 9601      ADIW	R24,1
    0064 93900061  STS	flag_bell+1,R25
    0066 93800060  STS	flag_bell,R24
(0030)   if(flag_bell==1)
    0068 3081      CPI	R24,1
    0069 E0E0      LDI	R30,0
    006A 079E      CPC	R25,R30
    006B F449      BNE	0x0075
(0031)   {
(0032)      flag_bell=0;
    006C 2422      CLR	R2
    006D 2433      CLR	R3
    006E 92300061  STS	flag_bell+1,R3
    0070 92200060  STS	flag_bell,R2
(0033) 	 PORTD=~(PORTD);
    0072 B222      IN	R2,0x12
    0073 9420      COM	R2
    0074 BA22      OUT	0x12,R2
(0034)   }
    0075 9029      LD	R2,Y+
    0076 BE2F      OUT	0x3F,R2
    0077 91E9      LD	R30,Y+
    0078 9199      LD	R25,Y+
    0079 9189      LD	R24,Y+
    007A 9039      LD	R3,Y+
    007B 9029      LD	R2,Y+
    007C 9518      RETI
FILE: D:\AVR\我的程序\定时器1的普通模式实验\main.c
(0001) /***********************************
(0002) *实验目的：熟悉定时器T1溢出中断模编程
(0003) *设    计：萧联珠
(0004) *日    期：2007-11-20
(0005) ************************************/
(0006) #include <iom16v.h>
(0007) #include "cfg.h"
(0008) 
(0009) void main()
(0010) {
(0011)   port_init();
_main:
    007D DFCE      RCALL	_port_init
(0012)   timer1_init();
    007E DFD0      RCALL	_timer1_init
(0013)   
(0014)   while(1);
FILE: <library>
    007F CFFF      RJMP	0x007F
    0080 9508      RET