개요

사진

샘플 코드

#define stb         10
#define clk         9
#define dio         8
uint8_t a = 0;
uint8_t b = 0;
uint8_t c = 0;
uint8_t dhor = 12;
uint8_t dmin = 34;
uint8_t dsec = 00;
int tOffset;
boolean latch = false;

void up() {
    uint8_t u = dhor / 10;
    uint8_t w = dhor % 10;
    uint8_t x = dmin / 10;
    uint8_t y = dmin % 10;
    uint8_t t;
    uint8_t a[] = {1, 0, 1, 1, 0, 1, 0, 1, 1, 1};
    uint8_t b[] = {1, 1, 1, 1, 1, 0, 0, 1, 1, 1};
    uint8_t c[] = {1, 1, 0, 1, 1, 1, 1, 1, 1, 1};
    uint8_t d[] = {1, 0, 1, 1, 0, 1, 1, 0, 1, 0};
    uint8_t e[] = {1, 0, 1, 0, 0, 0, 1, 0, 1, 0};
    uint8_t f[] = {1, 0, 0, 0, 1, 1, 1, 0, 1, 1};
    uint8_t g[] = {0, 0, 1, 1, 1, 1, 1, 0, 1, 1};
    uint8_t h[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
    digitalWrite(stb, LOW);
    shiftOut(dio, clk, LSBFIRST, 0x40);
    digitalWrite(stb, HIGH);
    digitalWrite(stb, LOW);
    shiftOut(dio, clk, LSBFIRST, 0xc0);
    t = a[y] << 4;
    t = t | a[x] << 5;
    t = t | a[w] << 6;
    t = t | a[u] << 7;
    shiftOut(dio, clk, LSBFIRST, t);
    shiftOut(dio, clk, LSBFIRST, 0x01);
    t = b[y] << 4;
    t = t | b[x] << 5;
    t = t | b[w] << 6;
    t = t | b[u] << 7;
    shiftOut(dio, clk, LSBFIRST, t);
    shiftOut(dio, clk, LSBFIRST, 0x01);
    t = c[y] << 4;
    t = t | c[x] << 5;
    t = t | c[w] << 6;
    t = t | c[u] << 7;
    shiftOut(dio, clk, LSBFIRST, t);
    shiftOut(dio, clk, LSBFIRST, 0x01);
    t = d[y] << 4;
    t = t | d[x] << 5;
    t = t | d[w] << 6;
    t = t | d[u] << 7;
    shiftOut(dio, clk, LSBFIRST, t);
    shiftOut(dio, clk, LSBFIRST, 0x01);
    t = e[y] << 4;
    t = t | e[x] << 5;
    t = t | e[w] << 6;
    t = t | e[u] << 7;
    shiftOut(dio, clk, LSBFIRST, t);
    shiftOut(dio, clk, LSBFIRST, 0x01);
    t = f[y] << 4;
    t = t | f[x] << 5;
    t = t | f[w] << 6;
    t = t | f[u] << 7;
    shiftOut(dio, clk, LSBFIRST, t);
    shiftOut(dio, clk, LSBFIRST, 0x01);
    t = g[y] << 4;
    t = t | g[x] << 5;
    t = t | g[w] << 6;
    t = t | g[u] << 7;
    shiftOut(dio, clk, LSBFIRST, t);
    shiftOut(dio, clk, LSBFIRST, 0x01);
    t = h[y] << 4;
    t = t | h[x] << 5;
    t = t | h[w] << 6;
    t = t | h[u] << 7;
    shiftOut(dio, clk, LSBFIRST, t);
    shiftOut(dio, clk, LSBFIRST, 0x01);
    digitalWrite(stb, HIGH);
}
void setup() {
    Serial.begin(9600);
    pinMode(stb, OUTPUT);
    pinMode(clk, OUTPUT);
    pinMode(dio, OUTPUT);
    digitalWrite(stb, LOW);
    shiftOut(dio, clk, LSBFIRST, 0x88);
    digitalWrite(stb, HIGH);
    tOffset = 500 - millis() % 1000;
    Serial.print("ok");
}
void loop() {
    uint8_t v;
    uint8_t btn = 20;
    digitalWrite(stb, LOW);
    shiftOut(dio, clk, LSBFIRST, 0x42);
    pinMode(dio, INPUT);
    v = shiftIn(dio, clk, LSBFIRST);
    if (v == 0x02)
    {
        btn = 1;
    }
    else if (v == 0x04)
    {
        btn = 7;
    }
    else if (v == 0x20)
    {
        btn = 2;
    }
    else if (v == 0x40)
    {
        btn = 8;
    }
    v = shiftIn(dio, clk, LSBFIRST);
    v = shiftIn(dio, clk, LSBFIRST);
    v = shiftIn(dio, clk, LSBFIRST);
    pinMode(dio, OUTPUT);
    digitalWrite(stb, HIGH);
    if (btn == 1)
    {
        dmin--;
    }
    if (btn == 2)
    {
        dhor--;
    }
    if (btn == 7)
    {
        dmin++;
    }
    if (btn == 8)
    {
        dhor++;
    }
    if ((millis() - tOffset) % 1000 < 500)
    {
        latch = true;
    }
    if (((millis() - tOffset) % 1000 >= 500) && latch)
    {
        latch = false;
        dsec++;
        if (dsec == 60)
        {
            dsec = 0;
            dmin++;
            if (dmin == 60)
            {
                dmin = 0;
                dhor++;
                if (dhor == 24)
                {
                    dhor = 0;
                }
            }
        }
    }
    up();
    delay(300);
}