oc1ab输出pwm.lst

ICC mega8例子

__start:
__text_start:
      13 E5CF      LDI	R28,0x5F
      14 E0D4      LDI	R29,4
      15 BFCD      OUT	0x3D,R28
      16 BFDE      OUT	0x3E,R29
      17 51CE      SUBI	R28,0x1E
      18 40D0      SBCI	R29,0
      19 EA0A      LDI	R16,0xAA
      1A 8308      STD	Y+0,R16
      1B 2400      CLR	R0
      1C E6E0      LDI	R30,0x60
      1D E0F0      LDI	R31,0
      1E E010      LDI	R17,0
      1F 36E0      CPI	R30,0x60
      20 07F1      CPC	R31,R17
      21 F011      BEQ	0x0024
      22 9201      ST	R0,Z+
      23 CFFB      RJMP	0x001F
      24 8300      STD	Z+0,R16
      25 E2E6      LDI	R30,0x26
      26 E0F0      LDI	R31,0
      27 E6A0      LDI	R26,0x60
      28 E0B0      LDI	R27,0
      29 E010      LDI	R17,0
      2A E000      LDI	R16,0
      2B BF0B      OUT	0x3B,R16
      2C 32E6      CPI	R30,0x26
      2D 07F1      CPC	R31,R17
      2E F021      BEQ	0x0033
      2F 95C8      LPM
      30 9631      ADIW	R30,1
      31 920D      ST	R0,X+
      32 CFF9      RJMP	0x002C
      33 D02D      RCALL	_main
_exit:
      34 CFFF      RJMP	_exit
FILE: E:\xiaozhiyong2009\设计资料\项目设计\ICCAVR_mega8_C\ICCAVR_mega8_OC1AB输出PWM\OC1AB输出PWM.c
(0001) //ICC-AVR application builder : 2009-3-11 13:52:41
(0002) // Target : M8
(0003) // Crystal: 8.0000Mhz
(0004) 
(0005) #include <iom8v.h>
(0006) #include <macros.h>
(0007) 
(0008) void port_init(void)
(0009) {
(0010)  PORTB = 0x00;
_port_init:
      35 2422      CLR	R2
      36 BA28      OUT	0x18,R2
(0011)  DDRB  = 0x00;
      37 BA27      OUT	0x17,R2
(0012)  PORTC = 0x00; //m103 output only
      38 BA25      OUT	0x15,R2
(0013)  DDRC  = 0x00;
      39 BA24      OUT	0x14,R2
(0014)  PORTD = 0x00;
      3A BA22      OUT	0x12,R2
(0015)  DDRD  = 0x00;
      3B BA21      OUT	0x11,R2
      3C 9508      RET
(0016) }
(0017) 
(0018) //call this routine to initialize all peripherals
(0019) void init_devices(void)
(0020) {
(0021)  //stop errant interrupts until set up
(0022)  CLI(); //disable all interrupts
_init_devices:
      3D 94F8      BCLR	7
(0023)  port_init();
      3E DFF6      RCALL	_port_init
(0024) 
(0025)  MCUCR = 0x00;
      3F 2422      CLR	R2
      40 BE25      OUT	0x35,R2
(0026)  GICR  = 0x00;
      41 BE2B      OUT	0x3B,R2
(0027)  TIMSK = 0x00; //timer interrupt sources
      42 BE29      OUT	0x39,R2
(0028)  SEI(); //re-enable interrupts
      43 9478      BSET	7
      44 9508      RET
(0029)  //all peripherals are now initialized
(0030) }
(0031) 
(0032) /************************************
(0033) 用    途:用TC1输出PWM
(0034) Taget   :mega8
(0035) crystal :8M
(0036) 介    绍:PB1(OC1A),PB2(OC1B)
(0037) 入口参数:A,B的占空比
(0038) 出口参数:
(0039) *************************************/
(0040) void init_timer1_PWM(unsigned int x,unsigned int y)
(0041) {
(0042)  DDRB|=(1<<PB1)|(1<<PB2);
_init_timer1_PWM:
  y                    --> R18
  x                    --> R16
      45 B387      IN	R24,0x17
      46 6086      ORI	R24,6
      47 BB87      OUT	0x17,R24
(0043)  TCCR1B=0x0;//先停止TC1
      48 2422      CLR	R2
      49 BC2E      OUT	0x2E,R2
(0044)  TCNT1=0;//设置TCNT1的初值
      4A 2433      CLR	R3
      4B BC3D      OUT	0x2D,R3
      4C BC2C      OUT	0x2C,R2
(0045)  OCR1A=x;//设置OC1A的初值
      4D BD1B      OUT	0x2B,R17
      4E BD0A      OUT	0x2A,R16
(0046)  OCR1B=y;//设置OC1B的初值
      4F BD39      OUT	0x29,R19
      50 BD28      OUT	0x28,R18
(0047)  ICR1=0xff;//设置ICR的初值
      51 EF8F      LDI	R24,0xFF
      52 E090      LDI	R25,0
      53 BD97      OUT	0x27,R25
      54 BD86      OUT	0x26,R24
(0048)  //系统时钟64分频CS1[2、0]=0x03
(0049)  //COM1A[1-0]=0x00,COM1B[1-0]=0x02
(0050)  TCCR1A|=(1<<COM1A1)|(1<<COM1B1)|(1<<WGM11);
      55 B58F      IN	R24,0x2F
      56 6A82      ORI	R24,0xA2
      57 BD8F      OUT	0x2F,R24
(0051)  TCCR1B|=(1<<WGM13)|(1<<CS11)|(1<<CS10);//Starttimer
      58 B58E      IN	R24,0x2E
      59 6183      ORI	R24,0x13
      5A BD8E      OUT	0x2E,R24
      5B 9508      RET
(0052) }
(0053) //调节占空比
(0054) void timer1_PWM(unsigned int x,unsigned int y)
(0055) {
(0056)  OCR1A=x;
_timer1_PWM:
  y                    --> R18
  x                    --> R16
      5C BD1B      OUT	0x2B,R17
      5D BD0A      OUT	0x2A,R16
(0057)  OCR1B=y;
      5E BD39      OUT	0x29,R19
      5F BD28      OUT	0x28,R18
      60 9508      RET
(0058) }
(0059) 
(0060) void main()
(0061) {
(0062)  port_init();
_main:
      61 DFD3      RCALL	_port_init
(0063)  init_devices();
      62 DFDA      RCALL	_init_devices
(0064)  
(0065)  init_timer1_PWM(100,200);
      63 EC28      LDI	R18,0xC8
      64 E030      LDI	R19,0
      65 E604      LDI	R16,0x64
      66 E010      LDI	R17,0
      67 DFDD      RCALL	_init_timer1_PWM
      68 C002      RJMP	0x006B
(0066)  while(1)
(0067)  {
(0068)   PORTB=0xff;
FILE: <library>
      69 EF8F      LDI	R24,0xFF
      6A BB88      OUT	0x18,R24
      6B CFFD      RJMP	0x0069
      6C 9508      RET