pwm0_led.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:
    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 940E0067  CALL	_main
_exit:
    004A CFFF      RJMP	_exit
_delay_ms:
  i                    --> R20
  time                 --> R16
    004B 940E0087  CALL	push_gset1
FILE: D:\AVR\我的程序\PWM0\cfg.h
(0001) /*******************************
(0002) *程序名称：各功能函数
(0003) *作    者：萧联珠
(0004) *日    期：2007-11-22
(0005) ********************************/
(0006) #include <iom16v.h>
(0007) 
(0008) /*延时子程序*/
(0009) void delay_ms(int time)
(0010) {
(0011)  int i;
(0012)  for(;time>0;time--)
    004D C00A      RJMP	0x0058
(0013)   for(i=0;i<200;i++);
    004E 2744      CLR	R20
    004F 2755      CLR	R21
    0050 5F4F      SUBI	R20,0xFF
    0051 4F5F      SBCI	R21,0xFF
    0052 3C48      CPI	R20,0xC8
    0053 E0E0      LDI	R30,0
    0054 075E      CPC	R21,R30
    0055 F3D4      BLT	0x0050
    0056 5001      SUBI	R16,1
    0057 4010      SBCI	R17,0
    0058 2422      CLR	R2
    0059 2433      CLR	R3
    005A 1620      CP	R2,R16
    005B 0631      CPC	R3,R17
    005C F38C      BLT	0x004E
    005D 940E008A  CALL	pop_gset1
    005F 9508      RET
(0014) }
(0015) 
(0016) void port_init() 
(0017) {
(0018)  PORTB=0xFF; //PB口配置为输出
_port_init:
    0060 EF8F      LDI	R24,0xFF
    0061 BB88      OUT	0x18,R24
(0019)  DDRB=0xFF; //PB口初始值为"1"
    0062 BB87      OUT	0x17,R24
    0063 9508      RET
(0020) }
(0021) 
(0022) void pwm_init() 
(0023) {
(0024)  TCCR0=0x61;         //配置定时器工作在相位修正PWM模式
_pwm_init:
    0064 E681      LDI	R24,0x61
    0065 BF83      OUT	0x33,R24
    0066 9508      RET
FILE: D:\AVR\我的程序\PWM0\main.c
(0001) /****************************************
(0002) *实验目的：熟悉定时器PWM模式控制LED
(0003) *作者：萧联珠
(0004) *日期：2007-11-22
(0005) ****************************************/
(0006) #include "iom16v.h"
(0007) #include "cfg.h"
(0008) 
(0009) void main(void) 
(0010) {
(0011) 
(0012) 	unsigned char i;
(0013) 	port_init();
_main:
  i                    --> R20
    0067 DFF8      RCALL	_port_init
(0014) 	pwm_init();
    0068 DFFB      RCALL	_pwm_init
    0069 C013      RJMP	0x007D
(0015) 	
(0016) 	while (1) 
(0017) 	{
(0018) 	   for(i=250;i>1;i--)
    006A EF4A      LDI	R20,0xFA
    006B C005      RJMP	0x0071
(0019) 	   {
(0020) 	     OCR0=i;
    006C BF4C      OUT	0x3C,R20
(0021) 		 delay_ms(8);
    006D E008      LDI	R16,0x8
    006E E010      LDI	R17,0
    006F DFDB      RCALL	_delay_ms
    0070 954A      DEC	R20
    0071 E081      LDI	R24,1
    0072 1784      CP	R24,R20
    0073 F3C0      BCS	0x006C
(0022) 		}
(0023) 		for(i=1;i<250;i++)
    0074 E041      LDI	R20,1
    0075 C005      RJMP	0x007B
(0024) 		{
(0025) 		 OCR0=i;
    0076 BF4C      OUT	0x3C,R20
(0026) 		 delay_ms(8);
FILE: <library>
    0077 E008      LDI	R16,0x8
    0078 E010      LDI	R17,0
    0079 DFD1      RCALL	_delay_ms
    007A 9543      INC	R20
    007B 3F4A      CPI	R20,0xFA
    007C F3C8      BCS	0x0076
    007D CFEC      RJMP	0x006A
    007E 9508      RET
push_gset5:
    007F 92FA      ST	R15,-Y
    0080 92EA      ST	R14,-Y
push_gset4:
    0081 92DA      ST	R13,-Y
    0082 92CA      ST	R12,-Y
push_gset3:
    0083 92BA      ST	R11,-Y
    0084 92AA      ST	R10,-Y
push_gset2:
    0085 937A      ST	R23,-Y
    0086 936A      ST	R22,-Y
push_gset1:
    0087 935A      ST	R21,-Y
    0088 934A      ST	R20,-Y
    0089 9508      RET
pop_gset1:
    008A E0E1      LDI	R30,1
pop:
    008B 9149      LD	R20,Y+
    008C 9159      LD	R21,Y+
    008D FDE0      SBRC	R30,0
    008E 9508      RET
    008F 9169      LD	R22,Y+
    0090 9179      LD	R23,Y+
    0091 FDE1      SBRC	R30,1
    0092 9508      RET
    0093 90A9      LD	R10,Y+
    0094 90B9      LD	R11,Y+
    0095 FDE2      SBRC	R30,2
    0096 9508      RET
    0097 90C9      LD	R12,Y+
    0098 90D9      LD	R13,Y+
    0099 FDE3      SBRC	R30,3
    009A 9508      RET
    009B 90E9      LD	R14,Y+
    009C 90F9      LD	R15,Y+
    009D 9508      RET