delay.lis

avr icc 平台开发的pwm模拟功能

                        .module delay.c
                        .area text(rom, con, rel)
 0000                   .dbfile D:\NEW\AVR_PWM\delay.c
 0000                   .dbfunc e delay_1us _delay_1us fV
                        .even
 0000           _delay_1us::
 0000                   .dbline -1
 0000                   .dbline 5
 0000           ; #define DELAY_C
 0000           ; #include "includes.h"
 0000           ; #define XTAL 4    //晶振频率，单位MHz
 0000           ; void delay_1us(void)                 //1us延时函数
 0000           ;   {
 0000                   .dbline 6
 0000           ;    asm("nop");
 0000 0000              nop
 0002                   .dbline -2
 0002                   .dbline 7
 0002           ;   }
 0002           L1:
 0002                   .dbline 0 ; func end
 0002 0895              ret
 0004                   .dbend
 0004                   .dbfunc e delay_nus _delay_nus fV
 0004           ;              i -> R20,R21
 0004           ;              n -> R22,R23
                        .even
 0004           _delay_nus::
 0004 0E940000          xcall push_gset2
 0008 B801              movw R22,R16
 000A                   .dbline -1
 000A                   .dbline 10
 000A           ; 
 000A           ; void delay_nus(unsigned int n)       //N us延时函数
 000A           ;   {
 000A                   .dbline 11
 000A           ;    unsigned int i=0;
 000A 4427              clr R20
 000C 5527              clr R21
 000E                   .dbline 12
 000E           ;    for (i=0;i<n;i++)
 000E 03C0              xjmp L6
 0010           L3:
 0010                   .dbline 13
 0010 F7DF              xcall _delay_1us
 0012           L4:
 0012                   .dbline 12
 0012 4F5F              subi R20,255  ; offset = 1
 0014 5F4F              sbci R21,255
 0016           L6:
 0016                   .dbline 12
 0016 4617              cp R20,R22
 0018 5707              cpc R21,R23
 001A D0F3              brlo L3
 001C                   .dbline -2
 001C                   .dbline 14
 001C           ;    delay_1us();
 001C           ;   }
 001C           L2:
 001C 0E940000          xcall pop_gset2
 0020                   .dbline 0 ; func end
 0020 0895              ret
 0022                   .dbsym r i 20 i
 0022                   .dbsym r n 22 i
 0022                   .dbend
 0022                   .dbfunc e delay_1ms _delay_1ms fV
 0022           ;              i -> R16,R17
                        .even
 0022           _delay_1ms::
 0022                   .dbline -1
 0022                   .dbline 17
 0022           ;   
 0022           ; void delay_1ms(void)                 //1ms延时函数
 0022           ;   {
 0022                   .dbline 19
 0022 0027              clr R16
 0024 1127              clr R17
 0026 02C0              xjmp L11
 0028           L8:
 0028                   .dbline 19
 0028           L9:
 0028                   .dbline 19
 0028 0F5F              subi R16,255  ; offset = 1
 002A 1F4F              sbci R17,255
 002C           L11:
 002C                   .dbline 19
 002C           ;    unsigned int i;
 002C           ;    for (i=0;i<(unsigned int)(XTAL*143-2);i++);
 002C 0A33              cpi R16,58
 002E E2E0              ldi R30,2
 0030 1E07              cpc R17,R30
 0032 D0F3              brlo L8
 0034                   .dbline -2
 0034                   .dbline 20
 0034           ;   }
 0034           L7:
 0034                   .dbline 0 ; func end
 0034 0895              ret
 0036                   .dbsym r i 16 i
 0036                   .dbend
 0036                   .dbfunc e delay_nms _delay_nms fV
 0036           ;              i -> R20,R21
 0036           ;              n -> R22,R23
                        .even
 0036           _delay_nms::
 0036 0E940000          xcall push_gset2
 003A B801              movw R22,R16
 003C                   .dbline -1
 003C                   .dbline 23
 003C           ;   
 003C           ; void delay_nms(unsigned int n)       //N ms延时函数
 003C           ;   {
 003C                   .dbline 24
 003C           ;    unsigned int i=0;
 003C 4427              clr R20
 003E 5527              clr R21
 0040                   .dbline 25
 0040           ;    for (i=0;i<n;i++)
 0040 03C0              xjmp L16
 0042           L13:
 0042                   .dbline 26
 0042                   .dbline 27
 0042 EFDF              xcall _delay_1ms
 0044                   .dbline 28
 0044           L14:
 0044                   .dbline 25
 0044 4F5F              subi R20,255  ; offset = 1
 0046 5F4F              sbci R21,255
 0048           L16:
 0048                   .dbline 25
 0048 4617              cp R20,R22
 004A 5707              cpc R21,R23
 004C D0F3              brlo L13
 004E                   .dbline -2
 004E                   .dbline 29
 004E           ;    {
 004E           ;       delay_1ms();
 004E           ;    }   
 004E           ;   }
 004E           L12:
 004E 0E940000          xcall pop_gset2
 0052                   .dbline 0 ; func end
 0052 0895              ret
 0054                   .dbsym r i 20 i
 0054                   .dbsym r n 22 i
 0054                   .dbend