[PIC] acquisition of a sinu signa

#include <16F88.h>
#device ADC=10 // conversion 10 bits
#include <math.h> //Ajoute la lib math
#fuses HS,NOWDT,NOPROTECT,NOLVP 
#use delay(clock=8000000)

#define LCD_DATA_PORT getenv("SFR:PORTB")


#byte TMR0 = 0x01F
#byte PORTA  = 0x5F
#byte PORTB  = 0x6F
#byte ADCON0  = 0x1F
#byte ADCON1  = 0x9F
#byte ANSEL  = 0x9B
#byte OPTION_REG  = 0x81
#byte INTCON  = 0x0B

#byte TRISA  = 0x85
#byte TRISB  = 0x86


#bit RP0 = 0x03.5
#bit RP1 = 0x03.6
#bit ADFM = 0x9F.7
#bit VCFG1 = 0x9F.5
#bit VCFG0 = 0x9F.4
#bit TOCS = 0x81.5
#bit PSA = 0x81.3
#bit GIE = 0x0B.7
#bit TMR0IE = 0x0B.5
#bit INT0IF = 0x0B.1



#define RS_PIN       PIN_B1
#define RW_PIN       PIN_B2
#define ENABLE_PIN   PIN_B0
#define Data4        PIN_B4
#define Data5        PIN_B5
#define Data6        PIN_B6
#define Data7        PIN_B7
#include <lcd.c>



float phi = 0;      
float tension = 0;  // effective voltage
float courant = 0;  // effective curent
int16 lue_phi = 0;      
int16 lue_tension = 0;  // read voltage
int16 lue_courant = 0; 
float conso_energie = 0; //consommation
float conso_puissance = 0;  
float deltaT = 0;//the operating time
float real_valueT = 0; 
float real_valueI = 0;





 const float cont_tension = 130; //coeficient for the effective voltage
 const float cont_courant = 10;  // coeficient for the effective curent
 const float deux_pi = 6.28 ;
 const float frequence = 50; // the frequency
 const float coef = 5/1024; 
  

 //Acquisition the curent and the phase
 void Acquisition()
 {
  
   while (lue_phi<2.5)
   {
     TMR0 = 0;
     lue_phi = read_adc();  //read the signal of the phase
     delay_us(100);
     
   }
   lue_courant = read_adc(); //read curent
   //delay_ms(100);
   real_valueI = ceil(coef*lue_courant); // have the amplitude of curent signal
   courant =cont_courant*lue_courant;    // the effective curent
   phi = 0.0001*deux_pi*frequence*TMR0; // phase value
   lue_phi = 0;
 }
 // Acquisition of the voltage
 void ATension()
 {
   
   lue_tension = read_adc();
   real_valueT = ceil(coef*lue_tension);
   tension =cont_tension*lue_tension; //the effective value
   
 }
 
 void main()
 {
   RP0 = 1;            
   TRISA  = 0b00000011;  
   TRISB = 0b00000000; 
   ADFM = 0;
   VCFG1 = 0;
   VCFG0 = 0;
   ANSEL = 0b00000011;//analog input configuration
   TOCS = 0; // TMR0 in timer mode
   PSA = 1; 
   RP0 = 0; 
   lcd_init();
   delay_ms(20);
   lcd_putc("\fENERGIE");
   while (1)
   {
    ADCON0 = 01000101;
    Acquisition();
    ADCON0 = 01001101;
    ATension();
    lcd_gotoxy(1,2);
    printf(lcd_putc,"%5.5f kwh",real_valueI);
    
   }
  
   
 }

float conso_energie = 0.0; //consommation
float conso_puissance = 0.0 ;  
float deltaT = 0.0 ;//the operating time
float real_valueT = 0.0 ; 
float real_valueI = 0.0 ;

 char txt[17];

   floatTostr(ConsoEnergy, txt,3) ;  // conversion avec 3 decimales
   lcd_putc(txt);