//#include <pic16f877.h>
#include "pic14.h"
#include "elso.h"
//#include "segment.h"

  // seven segment display
  //     a
  //  f     b
  //     g
  //  e     c
  //     d
#define segment_a   RC6
#define segment_b   RC4
#define segment_c   RD3
#define segment_d   RD2
#define segment_e   RD4
#define segment_f   RC7
#define segment_g   RD5
#define segment_dot RC5

/* Configuration bits: adapt to your setup and needs */
typedef unsigned int word;
word at 0x2007 CONFIG = _HS_OSC & _WDT_OFF & _PWRTE_ON & _BODEN_ON & _LVP_OFF & _CPD_OFF & _DEBUG_OFF & _CP_OFF;
//_WRT_OFF &

static void isr(void) interrupt 0 {

    toggle_segment(1);
    if (ADIF) { // A/D completed
        on_digit_dot();
        ADIF = 0;
    }
}

void init_board(void) {
  TRISD0 = 0; // configure PORTD0 for output (blinking led)
  TRISD7 = 0;
  TRISD6 = 0;
  TRISD5 = 0;
  TRISD4 = 0;
  TRISD3 = 0;
  TRISD2 = 0;
  TRISC7 = 0;
  TRISC6 = 0;
  TRISC5 = 0;
  TRISC4 = 0;

  TRISA = BIN(11111111); //all input AN0 peidg analog
  //disable all interrupts

  PIE1 = BIN(00000000);       // All peripheral interrupts initially disabled
  INTCON = BIN(00000000);     // Interrupts disabled
  PIR1 = 0;                   // Clear peripheral interrupt flags



}

// ------------------------------------------------
// a simple delay function
void delay_ms(long ms)
{
    long i;
    while (ms--)
        for (i=0; i < 330; i++)
            ;
}
void on_digit_zero(void) {
        segment_a   = 1;
        segment_b   = 1;
        segment_c   = 1;
        segment_d   = 1;
        segment_e   = 1;
        segment_f   = 1;
        segment_g   = 0;
        segment_dot = 0;
}

void on_digit_one(void) {
        segment_a   = 1;
        segment_b   = 1;
        segment_c   = 0;
        segment_d   = 0;
        segment_e   = 0;
        segment_f   = 0;
        segment_g   = 0;
        segment_dot = 0;
}
void on_digit_two(void) {
        segment_a   = 1;
        segment_b   = 0;
        segment_c   = 1;
        segment_d   = 1;
        segment_e   = 0;
        segment_f   = 1;
        segment_g   = 1;
        segment_dot = 0;
}
void on_digit_three(void) {
        segment_a   = 1;
        segment_b   = 1;
        segment_c   = 1;
        segment_d   = 0;
        segment_e   = 0;
        segment_f   = 1;
        segment_g   = 1;
        segment_dot = 0;
}
void on_digit_four(void) {
        segment_a   = 1;
        segment_b   = 1;
        segment_c   = 0;
        segment_d   = 0;
        segment_e   = 1;
        segment_f   = 0;
        segment_g   = 1;
        segment_dot = 0;
}
void on_digit_five(void) {
        segment_a   = 0;
        segment_b   = 1;
        segment_c   = 1;
        segment_d   = 0;
        segment_e   = 1;
        segment_f   = 1;
        segment_g   = 1;
        segment_dot = 0;
}
void on_digit_six(void) {
        segment_a   = 0;
        segment_b   = 1;
        segment_c   = 1;
        segment_d   = 1;
        segment_e   = 1;
        segment_f   = 1;
        segment_g   = 1;
        segment_dot = 0;
}
void on_digit_seven(void) {
        segment_a   = 1;
        segment_b   = 1;
        segment_c   = 0;
        segment_d   = 0;
        segment_e   = 0;
        segment_f   = 1;
        segment_g   = 0;
        segment_dot = 0;
}
void on_digit_eight(void) {
        segment_a   = 1;
        segment_b   = 1;
        segment_c   = 1;
        segment_d   = 1;
        segment_e   = 1;
        segment_f   = 1;
        segment_g   = 1;
        segment_dot = 0;
}
void on_digit_nine(void) {
        segment_a   = 1;
        segment_b   = 1;
        segment_c   = 1;
        segment_d   = 0;
        segment_e   = 1;
        segment_f   = 1;
        segment_g   = 1;
        segment_dot = 0;
}
void on_digit_dot(void) {
        segment_a   = 0;
        segment_b   = 0;
        segment_c   = 0;
        segment_d   = 0;
        segment_e   = 0;
        segment_f   = 0;
        segment_g   = 0;
        segment_dot = 1;
}
void clear_digit(void) {
        segment_a   = 0;
        segment_b   = 0;
        segment_c   = 0;
        segment_d   = 0;
        segment_e   = 0;
        segment_f   = 0;
        segment_g   = 0;
        segment_dot = 0;
}
// turn one segment on
void toggle_segment(int on) {
    if (on) {
        segment_a   = 0;
        segment_b   = 1;
        segment_c   = 1;
        segment_d   = 1;
        segment_e   = 1;
        segment_f   = 1;
        segment_g   = 1;
        segment_dot = 1;
    } else {
        segment_a = 0;
        segment_b = 0;
        segment_c = 0;
        segment_d = 0;
        segment_e = 0;
        segment_f = 0;
        segment_g = 0;
        segment_dot = 0;
    }
}

void count() {
        on_digit_zero();
        delay_ms(250);
        on_digit_one();
        delay_ms(250);
        on_digit_two();
        delay_ms(250);
        on_digit_three();
        delay_ms(250);
        on_digit_four();
        delay_ms(250);
        on_digit_five();
        delay_ms(250);
        on_digit_six();
        delay_ms(250);
        on_digit_seven();
        delay_ms(250);
        on_digit_eight();
        delay_ms(250);
        on_digit_nine();
        delay_ms(250);
        clear_digit();
        delay_ms(250);
}

void main() {
    // sit in an endless loop blinking the led

    init_board();
    for (;;)
    {
        INTCON = BIN(11000000); //GIE, PEIE
        PIE1   = BIN(01000000); //ADIE = 1
        ADCON0 = BIN(10000001); //Tosc/32, ADON
        ADCON1 = BIN(00001110); //left justified,an0
        ADIF = 0;
        delay_ms(1); //wait the required aquisition time
        ADON = 1; //start AD
        count();
    }
}