bee.lst

是一款开发板的外围电路试验程序(附有原理图)

__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 E6E1      LDI	R30,0x61
    0035 E0F0      LDI	R31,0
    0036 E010      LDI	R17,0
    0037 36E1      CPI	R30,0x61
    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 35E5      CPI	R30,0x55
    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:\mega16学习板资料\例程\m16\蜂鸣器基本实验\main.c
(0001) //ICC-AVR application builder : 2007-4-12 9:38:39
(0002) // Target : M16
(0003) // Crystal: 7.3728Mhz
(0004) //PA0输出频率波形
(0005) #include <iom16v.h>
(0006) #include <macros.h>
(0007) 
(0008) unsigned char Data=0;
(0009) void port_init(void)
(0010) {
(0011)  PORTA = 0xFF;
_port_init:
    004C EF8F      LDI	R24,0xFF
    004D BB8B      OUT	0x1B,R24
(0012)  DDRA  = 0xFF;
    004E BB8A      OUT	0x1A,R24
(0013)  PORTB = 0xFF;
    004F BB88      OUT	0x18,R24
(0014)  DDRB  = 0x00;
    0050 2422      CLR	R2
    0051 BA27      OUT	0x17,R2
(0015)  PORTC = 0xFF; 
    0052 BB85      OUT	0x15,R24
(0016)  DDRC  = 0x00;
    0053 BA24      OUT	0x14,R2
(0017)  PORTD = 0xFF;
    0054 BB82      OUT	0x12,R24
(0018)  DDRD  = 0x00;
    0055 BA21      OUT	0x11,R2
(0019) }
    0056 9508      RET
(0020) 
(0021) //TIMER0 initialisation - prescale:64
(0022) // WGM: Normal
(0023) // desired value: 1KHz
(0024) // actual value:  1.002KHz (0.2%)
(0025) void timer0_init(void)
(0026) {
(0027)  TCCR0 = 0x00; //stop
_timer0_init:
    0057 2422      CLR	R2
    0058 BE23      OUT	0x33,R2
(0028)  TCNT0 = 0x8D; //set count
    0059 E88D      LDI	R24,0x8D
    005A BF82      OUT	0x32,R24
(0029)  OCR0  = 0x73;  //set compare
    005B E783      LDI	R24,0x73
    005C BF8C      OUT	0x3C,R24
(0030)  TCCR0 = 0x03; //start timer
    005D E083      LDI	R24,3
    005E BF83      OUT	0x33,R24
(0031) }
    005F 9508      RET
_timer0_ovf_isr:
    0060 922A      ST	R2,-Y
    0061 938A      ST	R24,-Y
    0062 B62F      IN	R2,0x3F
    0063 922A      ST	R2,-Y
(0032) 
(0033) #pragma interrupt_handler timer0_ovf_isr:10
(0034) void timer0_ovf_isr(void)
(0035) {
(0036)  TCNT0 = 0x8D; //reload counter value
    0064 E88D      LDI	R24,0x8D
    0065 BF82      OUT	0x32,R24
(0037)  PORTA = Data;
    0066 90200060  LDS	R2,0x60
    0068 BA2B      OUT	0x1B,R2
(0038)  if(Data ==0)
    0069 2022      TST	R2
    006A F421      BNE	0x006F
(0039)   Data = 1;
    006B E081      LDI	R24,1
    006C 93800060  STS	0x60,R24
    006E C003      RJMP	0x0072
(0040)  else
(0041)   Data = 0;
    006F 2422      CLR	R2
    0070 92200060  STS	0x60,R2
(0042) }
    0072 9029      LD	R2,Y+
    0073 BE2F      OUT	0x3F,R2
    0074 9189      LD	R24,Y+
    0075 9029      LD	R2,Y+
    0076 9518      RETI
(0043) 
(0044) //call this routine to initialise all peripherals
(0045) void init_devices(void)
(0046) {
(0047)  //stop errant interrupts until set up
(0048)  CLI(); //disable all interrupts
_init_devices:
    0077 94F8      BCLR	7
(0049)  port_init();
    0078 DFD3      RCALL	_port_init
(0050)  timer0_init();
    0079 DFDD      RCALL	_timer0_init
(0051) 
(0052)  MCUCR = 0x00;
    007A 2422      CLR	R2
    007B BE25      OUT	0x35,R2
(0053)  GICR  = 0x00;
    007C BE2B      OUT	0x3B,R2
(0054)  TIMSK = 0x01; //timer interrupt sources
    007D E081      LDI	R24,1
    007E BF89      OUT	0x39,R24
(0055)  SEI(); //re-enable interrupts
    007F 9478      BSET	7
(0056)  //all peripherals are now initialised
(0057) }
    0080 9508      RET
(0058) 
(0059) //
(0060) void main(void)
(0061) {
(0062)  init_devices();
(0063)  //insert your functional code here...
(0064) }
FILE: <library>
_main:
    0081 CFF5      RJMP	_init_devices