使用CVAVR基于DS158b20检测发生的问题请高手解决，

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使用CVAVR基于DS158b20检测发生的问题请高手解决， [复制链接]

请高手帮忙我仿真出来只显示15.这是为什么刚开始用CVAVR好多不懂。请谅解

#include <mega16.h>

 #include <delay.h>

 #include <stdio.h>

#define uchar unsigned char

#define uint unsigned int

uchar teml,temh,tem,tt,a,b;

flash uchar table[]={'0','1','2','3','4','5','6','7','8','9',};

// 1 Wire Bus functions

#asm

   .equ __w1_port=0x1B ;PORTA

   .equ __w1_bit=0

#endasm

#include <1wire.h>

// DS1820 Temperature Sensor functions

#include <ds18b20.h>

// Alphanumeric LCD Module functions

#asm

   .equ __lcd_port=0x15 ;PORTC

#endasm

#include <lcd.h>

// Declare your global variables here

void main(void)

{

// Declare your local variables here

// Input/Output Ports initialization

// Port A initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 

PORTA=0x00;

DDRA=0x00;

// Port B initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 

PORTB=0x00;

DDRB=0x00;

// Port C initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 

PORTC=0x00;

DDRC=0x00;

// Port D initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 

PORTD=0x00;

DDRD=0x00;

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: Timer 0 Stopped

// Mode: Normal top=FFh

// OC0 output: Disconnected

TCCR0=0x00;

TCNT0=0x00;

OCR0=0x00;

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: Timer1 Stopped

// Mode: Normal top=FFFFh

// OC1A output: Discon.

// OC1B output: Discon.

// Noise Canceler: Off

// Input Capture on Falling Edge

// Timer1 Overflow Interrupt: Off

// Input Capture Interrupt: Off

// Compare A Match Interrupt: Off

// Compare B Match Interrupt: Off

TCCR1A=0x00;

TCCR1B=0x00;

TCNT1H=0x00;

TCNT1L=0x00;

ICR1H=0x00;

ICR1L=0x00;

OCR1AH=0x00;

OCR1AL=0x00;

OCR1BH=0x00;

OCR1BL=0x00;

// Timer/Counter 2 initialization

// Clock source: System Clock

// Clock value: Timer2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

ASSR=0x00;

TCCR2=0x00;

TCNT2=0x00;

OCR2=0x00;

// External Interrupt(s) initialization

// INT0: Off

// INT1: Off

// INT2: Off

MCUCR=0x00;

MCUCSR=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization

TIMSK=0x00;

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: Off

ACSR=0x80;

SFIOR=0x00;

// 1 Wire Bus initialization

//w1_init();

// LCD module initialization

lcd_init(16);

while (1)

      {

      w1_write(0XCC); //发转换命令

      w1_write(0X44); //启动

      delay_ms(750);

        w1_init();

        w1_write(0XCC); //读

        w1_write(0XBE);

        teml=w1_read(); 

        temh=w1_read();

        delay_ms(750); //延时 

        tem=temh;

        tem=tem*256;

        tem|=teml;

        tt=tem*0.0625;

        tem=tt*10+0.5;

        //tem=ds1820_read_spd(0xbe); 

        //tem=0x16; 

        a=tem/100;

        b=tem%100/10;

        

        //a=4;b=5; 

        

         lcd_clear();

         lcd_gotoxy(6,0 );

         lcd_putsf("temp");

         lcd_gotoxy(6,1 );     

         lcd_putchar(table[a]); 

         lcd_gotoxy(8,1 );

         lcd_putchar(table);

         

      };

}

if8051

1. /* measure and display the temperature(3) */
   while (1)
   {
   j=1;
   for (i=0;i<devices;i++)
   {
   // 格式化輸出到 lcd_buffer 陣列中，而不是使用 putchar() 從 UART 發送出去
   // Configure Project \ C Compiler \ (s)printf Features : float,width,precision
   // 原本是 int,width ROM 4052 Byte 修改為 float,width,precision ROM 6564 Byte 40.1%
   // 函式原型 float ds18b20_temperature(unsigned char *addr);
   
   sprintf(lcd_buffer,"t%u = %+.3f oC", j++, ds18b20_temperature(&rom_code[i][0]));
   
   puts(lcd_buffer); // 使用 putchar() 將字串 lcd_buffer 從 UART 發送出去，並在結尾自動補上換行符 \n，沒有此行，無法印出
   lcd_clear(); // LCM 清螢幕
   lcd_puts(lcd_buffer); // LCM 顯示存在 SRAM 中 lcd_buffer 陣列的字串
   delay_ms(2000);
   }
   }

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