// test1.c
// 数码管动态显示自己学号后6位
// display the last 6 digits of your student ID on the Seg.

#include "homework5.h"
unsigned char LedBuff[6] = {
    0xFF, 0XFF, 0XFF, 0XFF, 0XFF, 0XFF};
unsigned char i             = 0;
unsigned char display_id[6] = {1, 3, 0, 0, 7, 1};

void test1()
{
    // display the number on the Seg.
    // 5 is high digit.
    // 0 is low digit.
    LedBuff[5] = LedChar[display_id[0]];
    LedBuff[4] = LedChar[display_id[1]];
    LedBuff[3] = LedChar[display_id[2]];
    LedBuff[2] = LedChar[display_id[3]];
    LedBuff[1] = LedChar[display_id[4]];
    LedBuff[0] = LedChar[display_id[5]];
    while (1) {
        /*
         * seg id on 38 transistors:
         * Y0: LEDS0 the latest digit.
         * Y1: LEDS1 the second digit.
         * Y2: LEDS2 the third digit.
         * Y3: LEDS3 the forth digit.
         * Y4: LEDS4 the fifth digit.
         * Y5: LEDS5 the highest digit.
         * Y6: 2LED to the LED lights.
         */
        set38Transistors(i);
        P2 = LedBuff[i];
        i++;
        timer(1);
        // reset the i to 0 when it reaches 6.
        if (i >= 6) {
            i = 0;
        }
    }
}

void main()
{
    test1();
}