//-----------------------------------------------------------------------------
// Note
//  3桁の7セグメントの点灯
//  PICの周波数を32Mhzに設定
//-----------------------------------------------------------------------------
#include <xc.h>
#include <stdio.h>
#include <stdlib.h>

// コンフィグレーションBIT1 設定
#pragma config FOSC = INTOSC    // Oscillator Selection (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 CPD = OFF        // Data Memory Code Protection (Data 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)
#pragma config IESO = OFF       // Internal/External Switchover (Internal/External Switchover mode is disabled)
#pragma config FCMEN = OFF      // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor is disabled)

// コンフィグレーションBIT2 設定
#pragma config WRT = OFF        // Flash Memory Self-Write Protection (Write protection off)
#pragma config PLLEN = ON       // PLL Enable (4x PLL enabled)
#pragma config STVREN = ON      // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will cause a Reset)
#pragma config BORV = HI        // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), high trip point selected.)
#pragma config LVP = OFF        // Low-Voltage Programming Enable (High-voltage on MCLR/VPP must be used for programming)

#define _XTAL_FREQ 32000000 // オシレータ周波数 32Mhzの場合

// 点灯IOの定義
#define SEG_LED_A RA2
#define SEG_LED_B RA0
#define SEG_LED_C RC3
#define SEG_LED_D RC7
#define SEG_LED_E RB7
#define SEG_LED_F RA1
#define SEG_LED_G RC4
#define SEG_LED_DP RC6

#define SEG_DEGI_1 RA5
#define SEG_DEGI_2 RA4
#define SEG_DEGI_3 RC5

// 点灯位置の設定
const unsigned char seg_led[18] =
{
    {0b00111111},   // 0
    {0b00000110},   // 1
    {0b01011011},   // 2
    {0b01001111},   // 3
    {0b01100110},   // 4
    {0b01101101},   // 5
    {0b01111101},   // 6
    {0b00100111},   // 7
    {0b01111111},   // 8
    {0b01101111},   // 9
    {0b00000001},   // a
    {0b00000010},   // b
    {0b00000100},   // c
    {0b00001000},   // d
    {0b00010000},   // e
    {0b00100000},   // f
    {0b01000000},   // g
    {0b10000000}    // dp
};

const unsigned short out_num[12] =
{
    111,
    222,
    333,
    444,
    555,
    666,
    777,
    888,
    999,
    123,
    456,
    789
};


void out_7seg(short,short);


int main(int argc, char** argv)
{
    short num = 10;
    short seg = 0;
    short digi = 999;
    short wait = 1000;
    short i;
    short work;
    short out[3];

    OSCCON = 0b01110000 ;    // 内部クロック8ＭＨｚ

    ANSELA = 0b00000000 ;    // すべてデジタルI/Oに割当てる
    TRISA  = 0b00001000 ;    // ピンは全て出力に割当てる(RA3は入力のみとなる)
    PORTA  = 0b00000000 ;    // 出力ピンの初期化(全てLOWにする)

    ANSELB = 0b00000000 ;    // すべてデジタルI/Oに割当てる
    TRISB  = 0b00000000 ;    // ピンは全て出力に割当てる
    PORTB  = 0b00000000 ;    // 出力ピンの初期化(全てLOWにする)

    ANSELC = 0b00000000 ;    // すべてデジタルI/Oに割当てる
    TRISC  = 0b00000000 ;    // ピンは全て出力に割当てる
    PORTC  = 0b00000000 ;    // 出力ピンの初期化(全てLOWにする)

    // 初期出力 7セグメント OFF
    SEG_DEGI_1 = 1;
    SEG_DEGI_2 = 1;
    SEG_DEGI_3 = 1;

    for(;;)
    {
        for(;;)
        {
            seg = seg_led[num];
            out_7seg(seg, digi);

            // 1桁の待ち時間設定
            for(i=0; i<wait; i++)
                __delay_ms(1);

            num++;
            if( num>17 )
            {
                break;
            }
        }

        digi = 0;
        wait = 900;
        for(;;)
        {
            work = wait;
            out[2] = work % 10;// 1桁目
            work /= 10;
            out[1] = work % 10;// 2桁目
            work /= 10;
            out[0] = work;// 3桁目
            num = out[digi];
            seg = seg_led[num];
            out_7seg(seg, digi);

            // 1桁の待ち時間設定
            for(i=0; i<wait; i++)
                __delay_ms(1);

            digi++;
            if(digi>2)
            {
                digi = 0;
                if( wait > 200)
                    wait -= 50;
                else if( wait > 50 )
                    wait -= 5;
                else
                    wait -= 1;
                if( wait < 5 )
                    wait = 5;
            }
        }
    }

    return (EXIT_SUCCESS);
}


void out_7seg(short seg, short digi)
{
    // a点灯
    if( (seg & 0x01) != 0 )
        SEG_LED_A = 0;
    else
        SEG_LED_A = 1;

    // b点灯
    if( (seg & 0x02) != 0 )
        SEG_LED_B = 0;
    else
        SEG_LED_B = 1;

    // c点灯
    if( (seg & 0x04) != 0 )
        SEG_LED_C = 0;
    else
        SEG_LED_C = 1;

    // d点灯
    if( (seg & 0x08) != 0 )
        SEG_LED_D = 0;
    else
        SEG_LED_D = 1;

    // e点灯
    if( (seg & 0x10) != 0 )
        SEG_LED_E = 0;
    else
        SEG_LED_E = 1;

    // f点灯
    if( (seg & 0x20) != 0 )
        SEG_LED_F = 0;
    else
        SEG_LED_F = 1;

    // g点灯
    if( (seg & 0x40) != 0 )
        SEG_LED_G = 0;
    else
        SEG_LED_G = 1;

    // DP点灯
    if( (seg & 0x80) != 0 )
        SEG_LED_DP = 0;
    else
        SEG_LED_DP = 1;

    // 表示桁指定
    if( (digi == 0) || (digi == 999) )
        SEG_DEGI_1 = 0;
    else
        SEG_DEGI_1 = 1;

    if( (digi == 1) || (digi == 999) )
        SEG_DEGI_2 = 0;
    else
        SEG_DEGI_2 = 1;

    if( (digi == 2) || (digi == 999) )
        SEG_DEGI_3 = 0;
    else
        SEG_DEGI_3 = 1;
}