pwm2_bell.lst

cvavr m48 pwm实验

__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 940E0081  CALL	_main
_exit:
    004B CFFF      RJMP	_exit
FILE: D:\AVR\我的程序\定时器1的快速PWM实验\cfg.h
(0001) /*******************************
(0002) *程序名称：功能函数集
(0003) *设    计：萧联珠
(0004) *日    期：2007-11-19
(0005) ********************************/
(0006) #include <iom16v.h>
(0007) int flag_bell=0;
(0008)     
(0009) /*端口初始化*/
(0010) void port_init()    
(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) /*PWM初始化*/
(0017) void pwm_init()
(0018) {
(0019)  SREG=0x80;         //使能全局中断
_pwm_init:
    004F E880      LDI	R24,0x80
    0050 BF8F      OUT	0x3F,R24
(0020)  TIMSK=(1<<OCIE1A); //使能比较匹配中断
    0051 E180      LDI	R24,0x10
    0052 BF89      OUT	0x39,R24
(0021)  TCCR1A=0x03;      //配置定时器工作在快速PWM模式
    0053 E083      LDI	R24,3
    0054 BD8F      OUT	0x2F,R24
(0022)  TCCR1B=0x19;     //无分频
    0055 E189      LDI	R24,0x19
    0056 BD8E      OUT	0x2E,R24
(0023)  OCR1A=200;       //设置捕捉比较输出初值
    0057 EC88      LDI	R24,0xC8
    0058 E090      LDI	R25,0
    0059 BD9B      OUT	0x2B,R25
    005A BD8A      OUT	0x2A,R24
    005B 9508      RET
_pwm_int:
    005C 922A      ST	R2,-Y
    005D 923A      ST	R3,-Y
    005E 938A      ST	R24,-Y
    005F 939A      ST	R25,-Y
    0060 93EA      ST	R30,-Y
    0061 B62F      IN	R2,0x3F
    0062 922A      ST	R2,-Y
(0024) }
(0025) 
(0026) /*PWM中断服务程序*/
(0027) #pragma interrupt_handler pwm_int:7
(0028) void pwm_int()
(0029) {
(0030)   flag_bell=flag_bell+1;
    0063 91800060  LDS	R24,flag_bell
    0065 91900061  LDS	R25,flag_bell+1
    0067 9601      ADIW	R24,1
    0068 93900061  STS	flag_bell+1,R25
    006A 93800060  STS	flag_bell,R24
(0031)   if(flag_bell==10)
    006C 308A      CPI	R24,0xA
    006D E0E0      LDI	R30,0
    006E 079E      CPC	R25,R30
    006F F449      BNE	0x0079
(0032)   {
(0033)      flag_bell=0;
    0070 2422      CLR	R2
    0071 2433      CLR	R3
    0072 92300061  STS	flag_bell+1,R3
    0074 92200060  STS	flag_bell,R2
(0034) 	 PORTD=~(PORTD);
    0076 B222      IN	R2,0x12
    0077 9420      COM	R2
    0078 BA22      OUT	0x12,R2
(0035)   }
    0079 9029      LD	R2,Y+
    007A BE2F      OUT	0x3F,R2
    007B 91E9      LD	R30,Y+
    007C 9199      LD	R25,Y+
    007D 9189      LD	R24,Y+
    007E 9039      LD	R3,Y+
    007F 9029      LD	R2,Y+
    0080 9518      RETI
FILE: D:\AVR\我的程序\定时器1的快速PWM实验\main.c
(0001) /***********************************
(0002) *实验目的：熟悉定时器CTC模式编程
(0003) *设    计：萧联珠
(0004) *日    期：2007-11-19
(0005) ************************************/
(0006) #include <iom16v.h>
(0007) #include "cfg.h"
(0008) 
(0009) void main()
(0010) {
(0011)   port_init();
_main:
    0081 DFCA      RCALL	_port_init
(0012)   pwm_init();
    0082 DFCC      RCALL	_pwm_init
(0013)   
(0014)   while(1);
FILE: <library>
    0083 CFFF      RJMP	0x0083
    0084 9508      RET