Polytech Projets Ge » Polytech Ge Sous Traitance

#if defined(_XC)
#include <xc.h> /* XC8 General Include File /
#elif defined(HI_TECH_C)
#include <htc.h> / HiTech General Include File /
#elif defined(_18CXX)
#include <p18cxxx.h> / C18 General Include File */
#endif

#if defined(__XC) || defined(HI_TECH_C)

#include <stdint.h> /* For uint8_t definition /
#include <stdbool.h> / For true/false definition */
#include <stdio.h>
#include<stdlib.h>
#include <string.h>
#include <pic18f45k50.h>

#endif

#include "system.h" /* System funct/params, like osc/peripheral config /
#include "user.h" / User funct/params, such as InitApp */

#define _XTAL_FREQ 4000000

#pragma config FOSC=INTOSCIO
#pragma config WDTEN=OFF
#pragma config MCLRE=OFF
#pragma config LVP=OFF

/**Je configure 1 sortie PWM sur les I/O C1**/

void PWM_init() {
//PWM period = [(PR2) + 1] x 4 x Tosc x (TMR2 prescale value)
//PR2=(period/ToscxTMR2prescalex4)-1

short int period = 1/1000 ; // ms hz
    PR2=(((period)*_XTAL_FREQ)/16)-1;
    //PR2=100;//Period Register 2: defini la periode de l MLI

CCPR1L=12;
    CCP1CON=0b00001100;//SET PWM Mode

CCPR2L=12;
    CCP2CON=0b00001100;//SET PWM Mode

T2CONbits.TMR2ON=1;//Set timer 2
}

void PWM1 {
duty_cycle=(duty_cycle-511)/(1023-511);
CCPR1L=PR2*duty_cycle/100;
}

void PWM2 {
duty_cycle=(511- duty_cycle)/(511);
CCPR2L=PR2*duty_cycle/100;
}

void ADC_Init() {
TRISA = 0xff; /*set as input port*/
ADCON1 = 0x0e; /*ref vtg is VDD and Configure pin as analog pin*/
ADCON2 = 0x92; /*Right Justified, 4Tad and Fosc/32. /
ADRESH = 0; /*Flush ADC output Register/
ADRESL = 0;
}

int ADC_Read(int channel) {
int digital;
ADCON0 =(ADCON0 & 0b11000011)|((channel<<2) & 0b00111100); /*channel 0 is selected i.e (CHS3CHS2CHS1CHS0=0000)
and ADC is disabled i.e ADON=0*/
ADCON0 |= ((1<<ADON)|(1<<GO)); /*Enable ADC and start conversion*/
while(ADCON0bits.GO_nDONE==1); /*wait for End of conversion i.e. Go/done'=0 conversion completed*/
digital = (ADRESH*256) | (ADRESL); /*Combine 8-bit LSB and 2-bit MSB*/
return(digital);
}

void main(void) {
/* Configure the oscillator for the device */
ConfigureOscillator();

/* Initialize I/O and Peripherals for application /
    InitApp();
    PWM_init();
    ADC_Init();
    / TODO <INSERT USER APPLICATION CODE HERE> */
    ANSELC=0;

TRISCbits.TRISC1=0;//PWM1
    TRISCbits.TRISC2=0;//PWM2

int x,y;

while(1)
{
        x=ADC_READ(0);

if(x>511)
{
            PMW1(x);
        }
        else
{
            PMW2(x);
        }

}

}