/*****************************************************
This program was produced by the
CodeWizardAVR V1.24.2c Professional
Automatic Program Generator
© Copyright 1998-2004 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.ro
e-mail:office@hpinfotech.ro

Project : FARIN VOISIN
Version : v1.3
Date    : 26/05/2010
Author  : F4CG                            
Company : F4CG                            
Comments: 


Chip type           : ATmega8535
Program type        : Application
Clock frequency     : 16,000000 MHz
Memory model        : Small
External SRAM size  : 0
Data Stack size     : 128
*****************************************************/

#include <mega8535.h> 
#include <stdio.h>
#include <delay.h>

int TempComp=0;
int CompRef=0;
long NbOT=0;
int t;
float Vt=0;
int NbT=0;
int Nbio;
int Vf;
float Kv=250000;
int Flag;
int NbTF;

#define CPT1 1

// I2C Bus functions
#asm
   .equ __i2c_port=0x18 ;PORTB
   .equ __sda_bit=0
   .equ __scl_bit=1
#endasm
#include <i2c.h>

// LM75 Temperature Sensor functions
#include <lm75.h>

// Alphanumeric LCD Module functions
#asm
   .equ __lcd_port=0x15 ;PORTC
#endasm
#include <lcd.h>

// External Interrupt 0 service routine
interrupt [EXT_INT0] void ext_int0_isr(void)
{
TempComp=TCNT0;
if(NbOT>5)
	{      
		t=NbOT*256+(256-CompRef)+TempComp;
		Vt=(float)Vt+(0.85/t)*250000;
		CompRef=TempComp;
		NbT=NbT+1;
		NbOT=0;
	}

}

// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
NbOT=NbOT+1;

}

// Timer 2 overflow interrupt service routine
interrupt [TIM2_OVF] void timer2_ovf_isr(void)
{
	Nbio=Nbio+1;
    	if(Nbio==977)
		{
			Vf=(float)(Vt/NbT);
			Flag=1;
			NbTF=NbT;
			Vt=0;
			NbT=0;
       			Nbio=0;
		}


}

#define ADC_VREF_TYPE 0x00
// Read the AD conversion result
unsigned int read_adc(unsigned char adc_input)
{
ADMUX=adc_input|ADC_VREF_TYPE;
// Start the AD conversion
ADCSRA|=0x40;
// Wait for the AD conversion to complete
while ((ADCSRA & 0x10)==0);
ADCSRA|=0x10;
return ADCW;
}

// Declare your global variables here

void main(void)
{
unsigned char Tampon[16];
int TensB;
int ADC;
int Temperature;
char signe;
int Charge;
int Vte;
int Vref;
int temp;
// 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: 250,000 kHz
// Mode: Normal top=FFh
// OC0 output: Disconnected
TCCR0=0x03;
TCNT0=0x00;
OCR0=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
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: 250,000 kHz
// Mode: Normal top=FFh
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x04;
TCNT2=0x00;
OCR2=0x00;

// External Interrupt(s) initialization
// INT0: On
// INT0 Mode: Rising Edge
// INT1: Off
// INT2: Off
GICR|=0x40;
MCUCR=0x03;
MCUCSR=0x00;
GIFR=0x40;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x41;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
// Analog Comparator Output: Off
ACSR=0x80;
SFIOR=0x00;

// ADC initialization
// ADC Clock frequency: 125,000 kHz
// ADC Voltage Reference: AREF pin
// ADC High Speed Mode: Off
// ADC Auto Trigger Source: None
ADMUX=ADC_VREF_TYPE;
ADCSRA=0x87;
SFIOR&=0xEF;

// I2C Bus initialization
i2c_init();

// LM75 Temperature Sensor initialization
// thyst: 75°C
// tos: 80°C
// O.S. polarity: 0
lm75_init(CPT1,23,24,0);

// LCD module initialization
lcd_init(16);

// Global enable interrupts
#asm("sei")
      		ADC=read_adc(0);
       		Vref=(ADC*(656.88/1024.00));
while (1)
      {
      		ADC=read_adc(0);
       		TensB=(ADC*(656.88/1024.00));
      temp=lm75_temperature_10(CPT1);
      signe='+';
      if (temp<0)
         {
         signe='-';
         temp=-temp;
         };
      sprintf(Tampon,"Temp = %c%i.%u\xdfC",signe,temp/10,temp%10);
 
      lcd_gotoxy(0,0);
      lcd_puts(Tampon);
     		lcd_gotoxy(0,1);
      		Charge=(TensB-400)*(100.00/(Vref-400));
      		sprintf(Tampon,"Batterie = %3d ",Charge);
      		lcd_puts(Tampon);
      		lcd_gotoxy(0,2);
      		sprintf(Tampon,"Vbat = %d,%d V",TensB/10,TensB%10);
      		lcd_puts(Tampon);
      		if(Flag==1)
      		{
       		lcd_gotoxy(0,3); 
         	sprintf(Tampon,"            "); 
          	lcd_puts(Tampon);
           	lcd_gotoxy(0,3);
           	Vte=(float)15.3*NbTF;
            	sprintf(Tampon,"V =%d,%d Km/h",Vte/10,Vte%10); 
             	lcd_puts(Tampon);
              	Flag=0;
	        }

      };
}