/* 
 * File:   1572_Speedlimiter.c
 * Author: Hans
 *
 * Erstellt am 21.03.2021, 11:11
 */

#include <stdio.h>
#include <stdlib.h>
#include <xc.h>

#pragma config FOSC = INTOSC    //  (INTOSC oscillator; I/O function on CLKIN pin)
#pragma config WDTE = OFF       // Watchdog Timer Enable (WDT disabled)
#pragma config PWRTE = ON       // Power-up Timer Enable (PWRT enabled)
#pragma config MCLRE = OFF      // MCLR Pin Function Select (MCLR/VPP pin function is digital input)
#pragma config CP = OFF         // Flash Program Memory Code Protection (Program memory code protection is disabled)
#pragma config BOREN = OFF      // Brown-out Reset Enable (Brown-out Reset disabled)
#pragma config CLKOUTEN = OFF   // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin)

// CONFIG2
#pragma config WRT = OFF        // Flash Memory Self-Write Protection (Write protection off)
#pragma config PLLEN = OFF      // PLL Enable (4x PLL disabled)
#pragma config STVREN = ON      // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will cause a Reset)
#pragma config BORV = LO        // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)
#pragma config LPBOREN = OFF    // Low Power Brown-out Reset enable bit (LPBOR is disabled)
#pragma config LVP = OFF        // Low-Voltage Programming Enable (High-voltage on MCLR/VPP must be used for programming)

unsigned char var;
unsigned char varH;
unsigned char varL;
unsigned char compare(void);
unsigned char Delay_ms( unsigned int i);
void __interrupt mein_interrupt(void)
{  
}


void main(void)
{
    if(RA3==0)OPTION_REG = 0x72;// PSA = ein, Vorteiler = 1/8 (wenn RA3 auf GND)
    OSCCONbits.IRCF = 0x0d;//Ozillator = 4MHZ
    LATA5 = 1;
    TRISA5 = 0;// Scheinwerfer ein
    ANSELAbits.ANSA2 = 0;// RA2 ADC Eingang
    ADCON0bits.CHS = 3;//RA4 ADC Messen
    ADCON0bits.ADON = 1;
    ADCON1 = 0x30;//A/D Konversionsfequenz = FRC, VREF an VDD
    ADCON2bits.TRIGSEL2 = 1;// automatische Konversion, TMR1 triggert
    T1CONbits.TMR1ON = 1;//ADC Trigger
    TMR0 = 0;
    while(1)
    {
    Delay_ms(600);
    var = ADRESH;
    if(TMR0>=var)LATA5 = 0;
    TMR0 = 0;
    }
}