74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
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#define LED_COUNT 8
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#define UP 1
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#define DOWN 2
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#define PWM_PRECISION 8
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#define PWM_VALUE_MAX 1 << PWM_PRECISION
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#define PIN_BUTTON 13
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#define BUTTON_UP 1
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#define BUTTON_BOUNCING 2
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#define BUTTON_DOWN 3
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#define BUTTON_HELD 4
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const byte ledPins[] = {21, 47, 38, 39, 40, 41, 42, 2}; //define led pins
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const byte chns[] = {0, 1, 2, 3, 4, 5, 6, 7}; //define the pwm channels
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int pwmvalues[] = {1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7};
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char velocities[] = {DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN, DOWN};
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int delayTimes = 100; //flowing speed ,the smaller, the faster
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unsigned long button_bounce_millis = 0;
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char buttonState = BUTTON_UP;
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void setup() {
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for (int i = 0; i < LED_COUNT; i++) { //setup the pwm channels
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ledcAttachChannel(ledPins[i], 1000, PWM_PRECISION, chns[i]);
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}
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pinMode(PIN_BUTTON, INPUT);
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}
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void checkButtonPressed(void) {
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unsigned long curmillis = millis();
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if ( digitalRead(PIN_BUTTON) == LOW ) {
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if ( buttonState == BUTTON_UP ) {
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button_bounce_millis = millis();
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buttonState = BUTTON_BOUNCING;
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return;
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} else if ( buttonState == BUTTON_BOUNCING && curmillis - button_bounce_millis > 20 ) {
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if ( digitalRead(PIN_BUTTON) == LOW ) {
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buttonState = BUTTON_DOWN;
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}
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}
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} else if ( digitalRead(PIN_BUTTON) == HIGH ) {
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buttonState = BUTTON_UP;
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}
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}
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void loop() {
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checkButtonPressed();
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if ( buttonState == BUTTON_DOWN ) {
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for ( int i = 0; i < LED_COUNT ; i++ ) {
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if ( velocities[i] == UP) {
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velocities[i] = DOWN;
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} else {
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velocities[i] = UP;
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}
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}
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buttonState = BUTTON_HELD;
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}
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for ( int i = 0; i < LED_COUNT ; i++ ) {
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if ( pwmvalues[i] == 0 ) {
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velocities[i] = UP;
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pwmvalues[i] = 1;
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} else if ( pwmvalues[i] == PWM_VALUE_MAX ) {
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velocities[i] = DOWN;
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}
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if ( velocities[i] == UP ) {
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pwmvalues[i] = pwmvalues[i] << 1;
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} else if ( velocities[i] == DOWN ) {
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pwmvalues[i] = pwmvalues[i] >> 1;
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}
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ledcWrite(ledPins[i], pwmvalues[i]);
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}
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delay(delayTimes);
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}
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