温度测量ds18b20.rar

					.module _111.c
					.area text(rom, con, rel)
					.dbfile ..\..\..\..\PROTEU~2\5.avr\19.温度测量ds18b20\2.精确延时函数\111.c
					.dbfile D:\教程及心得\Proteus\PROTEU~2\5.avr\19.温度测量ds18b20\2.精确延时函数\111.c
					.dbfunc e delay0ms5us _delay0ms5us fV
					.even
				_delay0ms5us::
					.dbline -1
					.dbline 10
				; //ICC-AVR application builder : 2008/11/17 22:33:32
				; // Target : M8
				; // Crystal: 8.0000Mhz
				; 
				; #include 
				; #include 
				; #include "mydelay.h"
				; #define uchar unsigned char
				; void delay0ms5us(void)
				; {
					.dbline 14
				; /*精确延时0ms 5us ,晶振8MHz*/
				; /*us级精确延时 766us/晶振以内 延时=1+n*3 */
				; // CLI;//屏蔽中断
				; asm("LDI R18,10");//1t ，寄存器R15~R30
					LDI R18,10
					.dbline 15
				; asm("CLZ");//1t
					CLZ
					.dbline 16
				; asm("LOOP1:DEC R18");//1t
					LOOP1:DEC R18
					.dbline 17
				; asm("BRNE LOOP1");//1t或2t//标志位Z是0就转移
					BRNE LOOP1
					.dbline 18
				; asm("NOP");//1t
					NOP
					.dbline 19
				; asm("NOP");//1t
					NOP
					.dbline -2
				L1:
					.dbline 0 ; func end
					ret
					.dbend
					.dbfunc e port_init _port_init fV
					.even
				_port_init::
					.dbline -1
					.dbline 27
				; // SEI;
				; /*us级精确延时 24543us以内,可用nop补足余数*/
				; //===精确延时 4.125us,晶振8MHz ===//
				; //===调用函数及返回花费0.875us==//
				; }
				; 
				; void port_init(void)
				; {
					.dbline 28
				;  PORTB = 0x00;
					clr R2
					out 0x18,R2
					.dbline 29
				;  DDRB  = 0x00;
					out 0x17,R2
					.dbline 30
				;  PORTC = 0x00; //m103 output only
					out 0x15,R2
					.dbline 31
				;  DDRC  = 0xff;
					ldi R24,255
					out 0x14,R24
					.dbline 32
				;  PORTD = 0x00;
					out 0x12,R2
					.dbline 33
				;  DDRD  = 0x00;
					out 0x11,R2
					.dbline -2
				L2:
					.dbline 0 ; func end
					ret
					.dbend
					.dbfunc e init_devices _init_devices fV
					.even
				_init_devices::
					.dbline -1
					.dbline 38
				; }
				; 
				; //call this routine to initialize all peripherals
				; void init_devices(void)
				; {
					.dbline 40
				;  //stop errant interrupts until set up
				;  CLI(); //disable all interrupts
					cli
					.dbline 41
				;  port_init();
					rcall _port_init
					.dbline 43
				; 
				;  MCUCR = 0x00;
					clr R2
					out 0x35,R2
					.dbline 44
				;  GICR  = 0x00;
					out 0x3b,R2
					.dbline 45
				;  TIMSK = 0x00; //timer interrupt sources
					out 0x39,R2
					.dbline 46
				;  SEI(); //re-enable interrupts
					sei
					.dbline -2
				L3:
					.dbline 0 ; func end
					ret
					.dbend
					.dbfunc e main _main fV
					.even
				_main::
					.dbline -1
					.dbline 51
				;  //all peripherals are now initialized
				; }
				; 
				; void main(void)
				; {
					.dbline 52
				;   init_devices();
					rcall _init_devices
					.dbline 53
				;   PORTC=0x00;
					clr R2
					out 0x15,R2
					.dbline 54
				;   delay0ms900us();  
					rcall _delay0ms900us
					.dbline 55
				;   PORTC=0xff;
					ldi R24,255
					out 0x15,R24
					.dbline -2
				L4:
					.dbline 0 ; func end
					ret
					.dbend
				; }