[AVR] mutiple ADC Input 2 battery V & 1 temp sensor and display on lcd in ATMEGA 16

[reyyan]

hello, i am working on a project to detect the voltages of battery 1 and battery 2 and a temperature sensor and display on lcd, so i just made a code it detect battery 1 voltage and battery 2 voltages properly but temperature sensor is unable to give me correct value, if i there is change in battery 1 voltage then value of adc of temperature also change, here i am insert my code, kindly help me to fix it.

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Code C++ - [expand]
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#include<avr/io.h>
#include<util/delay.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h >
char display[50];
adc_read(unsigned int ch) 
{
ch&=00000011;
ADMUX=(ADMUX&0xF8)|ch;
delay_us(1);
ADCSRA |= (1<<ADSC);
while((ADCSRA & (1<<ADIF))==0);
}
void delay_us(int d)
{   unsigned int x;
    for(x=0 ; x<d ; x++)
        _delay_ms(10);
} 
int ready()
{
delay_us(10);
}
void LCD_Pulse_E(int t)
{
PORTB|= 0b00000100 ;  // E = 1; 
delay_us(t);
PORTB &= 0b11111011 ;  // E = 0; 
delay_us(t);
}
void lcdcommand(unsigned char cmnd)
{
ready();
PORTD=cmnd;
PORTB=0b11111000;
LCD_Pulse_E(1);
 
}
void lcddata(unsigned char data)
{
ready();
PORTD=data;
PORTB|=0b11111001;// RS=1; RW=0;
LCD_Pulse_E(1);
}
void lcd_init()
{
lcdcommand(0x38); 
lcdcommand(0x0C);
lcdcommand(0x01);
delay_us(5);
lcdcommand(0x06);
//lcdcommand(0x80);
/*void lcd_goto_yr(unsigned char y, unsigned char r)
{
unsigned char firstAddress[] = {0x80,0xC0,0x94,0xD4}; 
lcdcommand(firstAddress[y-1] + r-1);
delay_us(1000); 
}*/
 
}
void lcdprint(char * str)
{
unsigned char i=0;
while (str[i]!=0)
{
lcddata(str[i]);
i++;
}
}
int main(void)
{
DDRB=0xFF;
DDRD=0xFF;
DDRA=0x00;
DDRC=0xFF;
unsigned int adc_result0,adc_result1,adc_result2;
unsigned int volt1,final1,volt2,final2,temp;
lcd_init();
ADMUX=0b11100000; // ADC 0,internal 2.56V as Vref, left justify  
ADCSRA=0b10000111;
//lcdcommand(0xC0);// Cursor at Line 2, Position 0
//delay_us(500);
while(1)
{
 adc_read(0);
adc_result0=ADCH;
volt1=adc_result0;
final1=volt1*0.4807; 
sprintf(display,"BATT 1:%d",final1);
lcdprint(display);
 adc_read(1);
adc_result1=ADCH;
volt2=adc_result1;
final2=volt2*0.4807;
sprintf(display,"BATT 2:%d",final2);
lcdprint(display);
lcdcommand(0xC0);
 adc_read(2);
adc_result2=ADCH;
sprintf(display,"TEMP:%d",adc_result2);
lcdprint(display);
lcdcommand(0x02);
}
return 0;
}

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