/*****************************************************
This program was produced by the
CodeWizardAVR V2.05.3 Standard
Automatic Program Generator
© Copyright 1998-2011 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com
Project :
Version :
Date : 3/5/2014
Author : Saman.َAsadi
Chip type : ATmega16
Program type : Application
AVR Core Clock frequency: 8.000000 MHz
Memory model : Small
External RAM size : 0
Data Stack size : 256
*****************************************************/
#include <mega16.h>
#include <delay.h>
#include <alcd.h>
#define ADC_VREF_TYPE 0xC0
#define lcd lcd_putsf
#define cls lcd_clear()
#define lcds lcd_puts
#define lcdc lcd_putchar
#define locate lcd_gotoxy
unsigned int adc_data;
// ADC interrupt service routine
interrupt [ADC_INT] void adc_isr(void)
{
// Read the AD conversion result
adc_data=ADCW;
}
// Read the AD conversion result
// with noise canceling
unsigned int read_adc(unsigned char adc_input)
{
ADMUX=adc_input | ADC_VREF_TYPE;
// Delay needed for the stabilization of the ADC input voltage
delay_us(10);
#asm
in r30,mcucr
cbr r30,__sm_mask
sbr r30,__se_bit | __sm_adc_noise_red
out mcucr,r30
sleep
cbr r30,__se_bit
out mcucr,r30
#endasm
return adc_data;
}
void lcdf(float x , int z)
{
int a,b=0;
unsigned long int c;
char y;
float d;
long e;
x=x+0.00001;
c=x;
d=x;
for(a=0;a<100;a++)
{
if(c==0)break;
c=c/10;
if(b==0)b++;
else b*=10;
}
if(b==0)lcd("0");
for(a=b;a>0;a/=10)
{
c=x/(float)a;
x=x-((float)c*(float)a);
y=c+48;
lcdc(y);
}
x=d;
e=x;
x=x-e;
for(a=0;a<z;a++)x=x*10;
if(x<1)
{ lcd(" ");
return;
}
e=d;
d=d-e;
if(d>0)
{
lcd(".");
for(a=0;a<z;a++)
{ d*=10;
b=d;
y=b+48;
lcdc(y);
d=d-b;
}
}
}
void main(void)
{ unsigned int a=0;
{
// Declare your local variables here
// ADC initialization
// ADC Clock frequency: 62.500 kHz
// ADC Voltage Reference: Int., cap. on AREF
// ADC Auto Trigger Source: ADC Stopped
ADMUX=ADC_VREF_TYPE;
ADCSRA=0x8F;
// Alphanumeric LCD initialization
// Connections are specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTB Bit 0
// RD - PORTB Bit 1
// EN - PORTB Bit 2
// D4 - PORTB Bit 4
// D5 - PORTB Bit 5
// D6 - PORTB Bit 6
// D7 - PORTB Bit 7
// Characters/line: 16
lcd_init(16);
// Global enable interrupts
#asm("sei")
}
cls;
lcd("temp=");
while (1)
{ a++;
locate(5,0);
lcdf(((float)read_adc(0)/4)-0.25,2);
lcd(" ");
delay_ms(300);
}
}
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