main.lst

单片机中的定时器模块

__start:
__text_start:
    0046 EFCF      LDI	R28,0xFF
    0047 E1D0      LDI	R29,0x10
    0048 BFCD      OUT	0x3D,R28
    0049 BFDE      OUT	0x3E,R29
    004A 51C0      SUBI	R28,0x10
    004B 40D0      SBCI	R29,0
    004C EA0A      LDI	R16,0xAA
    004D 8308      STD	Y+0,R16
    004E 2400      CLR	R0
    004F E0E0      LDI	R30,0
    0050 E0F1      LDI	R31,1
    0051 E011      LDI	R17,1
    0052 30E1      CPI	R30,1
    0053 07F1      CPC	R31,R17
    0054 F011      BEQ	0x0057
    0055 9201      ST	R0,Z+
    0056 CFFB      RJMP	0x0052
    0057 8300      STD	Z+0,R16
    0058 E8EC      LDI	R30,0x8C
    0059 E0F0      LDI	R31,0
    005A E0A0      LDI	R26,0
    005B E0B1      LDI	R27,1
    005C E010      LDI	R17,0
    005D 38EC      CPI	R30,0x8C
    005E 07F1      CPC	R31,R17
    005F F021      BEQ	0x0064
    0060 95C8      LPM
    0061 9631      ADIW	R30,1
    0062 920D      ST	R0,X+
    0063 CFF9      RJMP	0x005D
    0064 940E0067  CALL	_main
_exit:
    0066 CFFF      RJMP	_exit
FILE: C:\DOCUME~1\tao\桌面\文档\工程\prj\TIMER\prj\main.c
(0001) //ICC-AVR application builder : 2007-8-13 15:05:41
(0002) // Target : M128
(0003) // Crystal: 7.3728Mhz
(0004) 
(0005) #include <iom128v.h>
(0006) #include <macros.h>
(0007) #include "port.h"
(0008) #include "timer.h"
(0009) 
(0010) 
(0011) 
(0012) /*call this routine to initialize all peripherals */
(0013) void main(void)
(0014) { 
(0015)   UNS8 i;
(0016)  //stop errant interrupts until set up
(0017)   CLI(); //disable all interrupts
_main:
  i                    --> Y+1
    0067 94F8      BCLR	7
(0018)   
(0019)   port_init();
    0068 940E0099  CALL	_port_init
(0020) 
(0021)   timer0_init();
    006A 940E0071  CALL	_timer0_init
(0022)   
(0023)   MCUCR = 0x00;//IO
    006C 2422      CLR	R2
    006D BE25      OUT	0x35,R2
(0024)  
(0025)  /*
(0026)  Set_Bit(PORTE,7);
(0027)  transmit_byte(0xaa);
(0028)  delay(10000);
(0029)  Clr_Bit(PORTE,7);
(0030)  */
(0031)  
(0032)  SEI(); //re-enable interrupts
    006E 9478      BSET	7
(0033)  //all peripherals are now initialized
(0034) 
(0035) 	 
(0036) for(;;)
    006F CFFF      RJMP	0x006F
    0070 9508      RET
FILE: C:\DOCUME~1\tao\桌面\文档\工程\prj\TIMER\prj\timer\timer.c
(0001) 
(0002) #include <macros.h>
(0003) #include "stdtypes.h"
(0004) #include "timer.h"
(0005) 
(0006) 
(0007) 
(0008) UNS8 time_couter;
(0009) 
(0010) 
(0011) //TIMER0 initialize - prescale:64
(0012) // WGM: Normal
(0013) // desired value: 1mSec
(0014) // actual value:  0.998mSec (0.2%)
(0015) void timer0_init(void)
(0016) {
(0017)  TCCR0 = 0x00; //stop
_timer0_init:
    0071 2422      CLR	R2
    0072 BE23      OUT	0x33,R2
(0018)  ASSR  = 0x00; //set async mode
    0073 BE20      OUT	0x30,R2
(0019)  TCNT0 = SET_COUNT; //set count
    0074 E88D      LDI	R24,0x8D
    0075 BF82      OUT	0x32,R24
(0020)  TCCR0 = 0x07; //start timer
    0076 E087      LDI	R24,7
    0077 BF83      OUT	0x33,R24
(0021)  TIMSK = TIMSK | (1 << TOIE0);
    0078 B787      IN	R24,0x37
    0079 6081      ORI	R24,1
    007A BF87      OUT	0x37,R24
(0022)  
(0023)  time_couter=0;
    007B 92200100  STS	time_couter,R2
    007D 9508      RET
_timer0_ovf_isr:
    007E 922A      ST	R2,-Y
    007F 938A      ST	R24,-Y
    0080 939A      ST	R25,-Y
    0081 B62F      IN	R2,0x3F
    0082 922A      ST	R2,-Y
(0024) }
(0025) 
(0026) #pragma interrupt_handler timer0_ovf_isr:17
(0027) void timer0_ovf_isr(void)
(0028) {
(0029)  //CLI(); //disable all interrupts
(0030)  
(0031)  TCNT0 = SET_COUNT;
    0083 E88D      LDI	R24,0x8D
    0084 BF82      OUT	0x32,R24
(0032) /*read the key value*/
(0033) 
(0034)   
(0035) 	 if(time_couter>10)
    0085 E08A      LDI	R24,0xA
    0086 90200100  LDS	R2,time_couter
    0088 1582      CP	R24,R2
    0089 F420      BCC	0x008E
(0036) 	 {
(0037) 	   time_couter=0;
    008A 2422      CLR	R2
    008B 92200100  STS	time_couter,R2
(0038) 	 }
    008D C005      RJMP	0x0093
(0039) 	 else
(0040) 	 {
(0041) 	 time_couter++;
    008E 91800100  LDS	R24,time_couter
    0090 5F8F      SUBI	R24,0xFF
    0091 93800100  STS	time_couter,R24
(0042) 	 }
    0093 9029      LD	R2,Y+
    0094 BE2F      OUT	0x3F,R2
    0095 9199      LD	R25,Y+
    0096 9189      LD	R24,Y+
    0097 9029      LD	R2,Y+
    0098 9518      RETI
FILE: C:\DOCUME~1\tao\桌面\文档\工程\prj\TIMER\prj\port\port.c
(0001) #include <iom128v.h>
(0002) 
(0003) 
(0004) void port_init(void)//修改
(0005) {
(0006)  PORTA = 0x00;
_port_init:
    0099 2422      CLR	R2
    009A BA2B      OUT	0x1B,R2
(0007)  DDRA  = 0x00;
    009B BA2A      OUT	0x1A,R2
(0008)  PORTB = 0x00;
    009C BA28      OUT	0x18,R2
(0009)  DDRB  = 0x00;
    009D BA27      OUT	0x17,R2
(0010)  PORTC = 0x00;
    009E BA25      OUT	0x15,R2
(0011)  DDRC  = 0x00;//key pc0-6
    009F BA24      OUT	0x14,R2
(0012)  PORTD = 0x00;
    00A0 BA22      OUT	0x12,R2
(0013)  DDRD  = 0x00;
    00A1 BA21      OUT	0x11,R2
(0014)  PORTE = 0x00;
    00A2 B823      OUT	0x03,R2
(0015)  DDRE  = 0x00;
    00A3 B822      OUT	0x02,R2
(0016)  PORTF = 0x00; 
    00A4 92200062  STS	0x62,R2
(0017)  DDRF  = 0x00;
    00A6 92200061  STS	0x61,R2
(0018)  PORTG = 0x00;
    00A8 92200065  STS	0x65,R2
(0019)  DDRG  = 0x00;
FILE: <library>
    00AA 92200064  STS	0x64,R2
    00AC 9508      RET