51 lines
1.0 KiB
C++
51 lines
1.0 KiB
C++
const unsigned int scan[] = {5, 6, 7, 8};
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#define DATA 10
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#define LATCH 11
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#define CLK 12
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const int date[] = {2022, 323};
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byte numbers[] = {
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0xC0, 0xF9, 0xA4, 0xB0, 0x99,
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0x92, 0x82, 0xF8, 0x80, 0x90
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};
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void setup() {
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for (int i = 0; i < 4; i++) {
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pinMode(scan[i], OUTPUT);
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digitalWrite(scan[i], HIGH);
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}
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pinMode(DATA, OUTPUT);
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pinMode(LATCH, OUTPUT);
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pinMode(CLK, OUTPUT);
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}
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void setDigits(int number, int digits[4]) {
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for (int i = 0; i < 4; i++) {
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digits[i] = number % 10;
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number /= 10;
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}
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}
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void show(int digits[4]) {
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for (int i = 0; i < 4; i++) {
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digitalWrite(LATCH, LOW);
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shiftOut(DATA, CLK, MSBFIRST, numbers[digits[i]]);
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digitalWrite(LATCH, HIGH);
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digitalWrite(scan[i], LOW);
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delay(1);
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digitalWrite(scan[i], HIGH);
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}
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}
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void loop() {
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static unsigned long checkpoint = 0;
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static int digits[4];
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static bool mode = false;
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show(digits);
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if (millis() - checkpoint > 500) {
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mode = !mode;
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setDigits(date[mode], digits);
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checkpoint = millis();
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}
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}
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