speed_iso.lst

一个用mega8开发的速度发生器,速度比较准确,值得下载

__start:
__text_start:
    0014 E5CF      LDI	R28,0x5F
    0015 E0D4      LDI	R29,4
    0016 BFCD      OUT	0x3D,R28
    0017 BFDE      OUT	0x3E,R29
    0018 51C0      SUBI	R28,0x10
    0019 40D0      SBCI	R29,0
    001A EA0A      LDI	R16,0xAA
    001B 8308      STD	Y+0,R16
    001C 2400      CLR	R0
    001D E6E1      LDI	R30,0x61
    001E E0F0      LDI	R31,0
    001F E010      LDI	R17,0
    0020 36E1      CPI	R30,0x61
    0021 07F1      CPC	R31,R17
    0022 F011      BEQ	0x0025
    0023 9201      ST	R0,Z+
    0024 CFFB      RJMP	0x0020
    0025 8300      STD	Z+0,R16
    0026 E2E6      LDI	R30,0x26
    0027 E0F0      LDI	R31,0
    0028 E6A0      LDI	R26,0x60
    0029 E0B0      LDI	R27,0
    002A E010      LDI	R17,0
    002B 32E7      CPI	R30,0x27
    002C 07F1      CPC	R31,R17
    002D F021      BEQ	0x0032
    002E 95C8      LPM
    002F 9631      ADIW	R30,1
    0030 920D      ST	R0,X+
    0031 CFF9      RJMP	0x002B
    0032 D048      RCALL	_main
_exit:
    0033 CFFF      RJMP	_exit
FILE: D:\xb_work\标准速度测试仪\speed_mega8\C_file\main.c
(0001) //ICC-AVR application builder : 2006-10-11 上午 11:30:40
(0002) // Target : M8
(0003) // Crystal: 6.0000Mhz
(0004) 
(0005) #include <iom8v.h>
(0006) #include <macros.h>
(0007) 
(0008)  unsigned char flag =0;
(0009) 
(0010) void port_init(void)
(0011) {
(0012)  PORTB = 0x00;
_port_init:
    0034 2422      CLR	R2
    0035 BA28      OUT	0x18,R2
(0013)  DDRB  = 0x00;
    0036 BA27      OUT	0x17,R2
(0014)  PORTC = 0x00; //m103 output only
    0037 BA25      OUT	0x15,R2
(0015)  DDRC  = 0x00;
    0038 BA24      OUT	0x14,R2
(0016)  PORTD = 0x00;
    0039 BA22      OUT	0x12,R2
(0017)  DDRD  = 0x00;
    003A BA21      OUT	0x11,R2
    003B 9508      RET
(0018) }
(0019) 
(0020) //Watchdog initialize
(0021) // prescale: 16K 
(0022) void watchdog_init(void)
(0023) {
(0024)  WDR(); //this prevents a timout on enabling
_watchdog_init:
    003C 95A8      WDR
(0025)  WDTCR = 0x08; //WATCHDOG ENABLED - dont forget to issue WDRs
    003D E088      LDI	R24,0x8
    003E BD81      OUT	0x21,R24
    003F 9508      RET
(0026) }
(0027) 
(0028) //TIMER1 initialize - prescale:1
(0029) // WGM: 0) Normal, TOP=0xFFFF
(0030) // desired value: 320Hz
(0031) // actual value: 320.000Hz (0.0%)
(0032) void timer1_init(void)
(0033) {
(0034)  TCCR1B = 0x00; //stop
_timer1_init:
    0040 2422      CLR	R2
    0041 BC2E      OUT	0x2E,R2
(0035)  TCNT1H = 0xD8; //setup
    0042 ED88      LDI	R24,0xD8
    0043 BD8D      OUT	0x2D,R24
(0036)  TCNT1L = 0xF0;
    0044 EF80      LDI	R24,0xF0
    0045 BD8C      OUT	0x2C,R24
(0037)  OCR1AH = 0x27;
    0046 E287      LDI	R24,0x27
    0047 BD8B      OUT	0x2B,R24
(0038)  OCR1AL = 0x10;
    0048 E180      LDI	R24,0x10
    0049 BD8A      OUT	0x2A,R24
(0039)  OCR1BH = 0x27;
    004A E287      LDI	R24,0x27
    004B BD89      OUT	0x29,R24
(0040)  OCR1BL = 0x10;
    004C E180      LDI	R24,0x10
    004D BD88      OUT	0x28,R24
(0041)  ICR1H  = 0x27;
    004E E287      LDI	R24,0x27
    004F BD87      OUT	0x27,R24
(0042)  ICR1L  = 0x10;
    0050 E180      LDI	R24,0x10
    0051 BD86      OUT	0x26,R24
(0043)  TCCR1A = 0x00;
    0052 BC2F      OUT	0x2F,R2
(0044)  TCCR1B = 0x01; //start Timer
    0053 E081      LDI	R24,1
    0054 BD8E      OUT	0x2E,R24
    0055 9508      RET
_timer1_ovf_isr:
    0056 922A      ST	R2,-Y
    0057 938A      ST	R24,-Y
    0058 B62F      IN	R2,0x3F
    0059 922A      ST	R2,-Y
(0045) }
(0046) 
(0047) #pragma interrupt_handler timer1_ovf_isr:9
(0048) void timer1_ovf_isr(void)
(0049) {
(0050)  //TIMER1 has overflowed
(0051)   TCNT1H = 0xD8; 
    005A ED88      LDI	R24,0xD8
    005B BD8D      OUT	0x2D,R24
(0052)   TCNT1L = 0xF0;
    005C EF80      LDI	R24,0xF0
    005D BD8C      OUT	0x2C,R24
(0053)  
(0054)  
(0055)   if(flag ==0)
    005E 90200060  LDS	R2,flag
    0060 2022      TST	R2
    0061 F429      BNE	0x0067
(0056)   {
(0057)       PORTD |= 0x04;
    0062 9A92      SBI	0x12,2
(0058) 	  flag =1;
    0063 E081      LDI	R24,1
    0064 93800060  STS	flag,R24
(0059)   }else
    0066 C004      RJMP	0x006B
(0060)   {
(0061)       PORTD &= ~(0x04);
    0067 9892      CBI	0x12,2
(0062) 	  flag =0;
    0068 2422      CLR	R2
    0069 92200060  STS	flag,R2
(0063)   }
    006B 9029      LD	R2,Y+
    006C BE2F      OUT	0x3F,R2
    006D 9189      LD	R24,Y+
    006E 9029      LD	R2,Y+
    006F 9518      RETI
(0064)  
(0065) }
(0066) 
(0067) //call this routine to initialize all peripherals
(0068) void init_devices(void)
(0069) {
(0070)  //stop errant interrupts until set up
(0071)  CLI(); //disable all interrupts
_init_devices:
    0070 94F8      BCLR	7
(0072)  port_init();
    0071 DFC2      RCALL	_port_init
(0073)  watchdog_init();
    0072 DFC9      RCALL	_watchdog_init
(0074)  timer1_init();
    0073 DFCC      RCALL	_timer1_init
(0075) 
(0076)  MCUCR = 0x00;
    0074 2422      CLR	R2
    0075 BE25      OUT	0x35,R2
(0077)  GICR  = 0x00;
    0076 BE2B      OUT	0x3B,R2
(0078)  TIMSK = 0x04; //timer interrupt sources
    0077 E084      LDI	R24,4
    0078 BF89      OUT	0x39,R24
(0079)  SEI(); //re-enable interrupts
    0079 9478      BSET	7
    007A 9508      RET
(0080)  //all peripherals are now initialized
(0081) }
(0082) 
(0083) //************************************************************ 
(0084)  void main(void)
(0085)  {
(0086)   init_devices();
_main:
    007B DFF4      RCALL	_init_devices
(0087)   DDRD  |= 0x04;
    007C 9A8A      SBI	0x11,2
(0088)   PORTD |= 0x04;
    007D 9A92      SBI	0x12,2
(0089)   flag =1;
    007E E081      LDI	R24,1
    007F 93800060  STS	flag,R24
    0081 C001      RJMP	0x0083
(0090)   
(0091)   while(1)
(0092)   {
(0093)    WDR();
FILE: <library>
    0082 95A8      WDR
    0083 CFFE      RJMP	0x0082
    0084 9508      RET