На странице этого проекта есть только фаил с названием main.c
вот его содержание:
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Код: Выделить всё
/*
* File: main.c
* Author: Petr Kortanek, i4wifi a.s.
*
* Created on 23rd November 2013
*
* 2014-01-11 - RA3 (MCLR, prog 1) input for button
* 2014-04-09 - RA0 (ICSPDAT, prog 4) potentiometer input
* 2014-08-11 - fixed PWM duty (+10bit), RA1 (ICSPCLK, prog 5) input switch 6A / 10A
*/
#include <stdio.h>
#include <stdlib.h>
#include <xc.h>
#define _XTAL_FREQ 4000000
#define Button_pressed PORTAbits.RA3
#pragma config LVP = OFF, MCLRE = OFF, BOREN = OFF, PLLEN = OFF, FOSC = INTOSC, WDTE = OFF, CP = OFF, PWRTE = OFF
char latcha = 0;
char latchc = 0;
char pilot_value = 255;
char pot_value = 255;
char pot_value2 = 255;
char adchannel = 2;
char measure_nth = 0;
char button_pressed_counter = 0;
char amps = 16;
char amps_to_set = 16;
char setbypot = 0;
short duty = 500; //50%
//attached to RC1
void relayon() {
latchc = latchc | 0b00000011;//RC1+backup RC0
PORTC = latchc;
}
void relayoff() {
latchc = latchc & 0b11111100;//RC1+backup RC0
PORTC = latchc;
}
//attached to RC2
void ledon() {
latchc = latchc | 0b00000100;
PORTC = latchc;
}
void ledoff() {
latchc = latchc & 0b11111011;
PORTC = latchc;
}
void button_flashing() {
for (int i=0; i<20; i++) {
ledon();
__delay_ms(30);
ledoff();
__delay_ms(30);
}
}
void setAmps() {
setbypot = 0;
//we get current limit from the pot
if (pot_value <= 222) { //<4.4V, amps 6-80
amps = 6 + (222-pot_value)/3;
setbypot = 1;
}
//we get current limit from the "pot2" (set 6A / 10A)
if (pot_value2 <= 222) { //<4.4V,
amps = 10;
if (pot_value2 <= 25) { //short => amps 6 ~ >3kOhm
amps = 6;
}
setbypot = 1;
}
if (setbypot == 0) {
amps = amps_to_set;
}
//minimum
if (amps < 5)
amps = 5;
//maximum
if (amps > 80)
amps = 80;
//compute PWM duty
if (amps < 51)
duty = 1000 - (100 * amps) / 6;
else
duty = 1000 - (4*amps+640);
//set PWM output 10bit
CCPR1L = duty >> 2;
duty &= 0b00000011;
duty <<= 4;
CCP1CON = duty + 12; //1100
}
void main() {
OSCCON = 0b01101010; // 4MHz
TRISA = 0b11111111; //pilot detect RA2, button detect RA3, pot RA0, pot2 RA1
TRISC = 0b11110000; //relay RC1 (+backup RC0), LED RC2, pilot RC3
latcha = 0;
latchc = 0;
PORTA = latcha;
PORTC = latchc;
ADCON1 = 0b01100000; // f/64 4MHz, 16 us
ADON = 1; //channel: RA2=PWM detect, RA0=pot value, RA1=pot2 value
ADCON0bits.CHS = 2;
//pilot PWM RC3
PSTR1CONbits.STR1C = 1;
APFCON1bits.P1CSEL = 0; //P1C function is on RC3
PR2 = 249 ;//period value
CCP1CON = 0b00001100; //PWM mode
OPTION_REG = 0b00000001; //pullups and TMR0
WPUAbits.WPUA3 = 1; //button pressed detect - MCLR
WPUAbits.WPUA1 = 1; //6A / 10A input RA1
//T2CON timer ON + prescaler 4
T2CON = 0b00000101 ;
//INTCON = 0b11100000;
GIE = 1;
PEIE = 1;
ADIE = 1;
TMR2IE = 1;
setAmps();
while(1) {
//MODE set current
if(Button_pressed == 0) {
button_pressed_counter++;
//setting mode entered - rapid led flashing
if (button_pressed_counter == 5) {
button_flashing();
amps_to_set = 0;
}
if (button_pressed_counter >= 5) {
amps_to_set++;
setAmps();
ledoff();
__delay_ms(300);
ledon();
__delay_ms(300);
} else {
__delay_ms(800);
}
//MODE normal operation
} else {
if(button_pressed_counter>=5) {
//current setting mode exit confirmation
button_flashing();
}
button_pressed_counter = 0;
//car connected (pilot pulled down <8V)
if(pilot_value < 111) {
relayon();
ledon();
__delay_ms(800);
} else {
ledon();
__delay_ms(30);
relayoff();
}
ledoff();
__delay_ms(300);
}
}
}
void interrupt isr() {
//channel: RA2=PWM detect or RA0=pot value
if (ADIF) {
if (adchannel == 0) {
pot_value = ADRESH;
setAmps();
adchannel = 1;
} else if (adchannel == 1) {
pot_value2 = ADRESH;
setAmps();
adchannel = 2;
} else {
pilot_value = ADRESH;
adchannel = 0;
}
ADCON0bits.CHS = adchannel;
ADIF = 0;
}
if (TMR2IF) {
TMR2IF = 0;
//voltage must be measured when voltage is "up"
measure_nth++;
if (measure_nth>98) {
__delay_us(950);
GO_nDONE = 1;
measure_nth = 0;
}
}
}
Вот правильная прошивка и корректировок не требует! 
Вот для этого 