63 lines
1.1 KiB
C++
63 lines
1.1 KiB
C++
#define BUTTON 4
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int LED[] = {5, 6, 9, 10, 11};
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#define DELAY 100
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#define STEP 50
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bool isPressed() {
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// falling edge trigger
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static bool last = true;
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bool result = false;
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if (last && !digitalRead(BUTTON)) {
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result = true;
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}
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last = digitalRead(BUTTON);
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delay(1);
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return result;
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}
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void move() {
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static int clk = 0;
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for (int i = 0; i < 5; i++) {
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digitalWrite(LED[i], clk % 5 != i);
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}
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clk += 1;
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}
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void setup() {
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for (int i = 0; i < 5; i++) {
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pinMode(LED[i], OUTPUT);
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digitalWrite(LED[i], HIGH);
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}
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pinMode(BUTTON, INPUT);
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}
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void loop() {
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static int delay_time = DELAY;
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static bool stopping = false;
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static unsigned long checkpoint = 0;
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static int end = 0;
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static int step = 0;
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if (isPressed()) {
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stopping = !stopping;
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if (stopping) {
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end = random(12, 17);
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step = 0;
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} else {
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step = 0;
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}
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}
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if (millis() - checkpoint > delay_time) {
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if (!stopping || step < end) {
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move();
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}
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if (stopping) {
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step++;
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}
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checkpoint = millis();
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}
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delay_time = DELAY + step * STEP;
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}
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