40 lines
1.5 KiB
Arduino
40 lines
1.5 KiB
Arduino
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//***********************************************************************************
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// A debounce demo that reads a key and toggles the LED.
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// Set the pin to the correct one for your key.
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//***********************************************************************************
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#include <debounce.h>
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const int SAMPLE_TIME = 1; // The sample time in ms.
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const int DEBOUNCE_COUNT = 50; // The number of samples that must agree before a key state change is recognised. 50 = 50ms for 1ms sample time.
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const int HOLD_COUNT = 1000; // The number of samples that must agree before a key held state is recognised. 1000 = 1s for 1ms sample time.
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const int REPEAT_COUNT = 200; // The number of samples that must agree before a key repeat state is recognised. 200 = 200ms for 1ms sample time.
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const int KEY = XX; // The pin that the key is attached to.
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void setup()
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{
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// Initialize LED pin as an output and set off.
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pinMode(LED_BUILTIN , OUTPUT);
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digitalWrite(LED_BUILTIN, LOW);
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// Initialize KEY pin as an input.
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pinMode(KEY, INPUT);
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}
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void loop()
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{
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static int led_state = LOW;
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static etl::debounce<DEBOUNCE_COUNT, HOLD_COUNT, REPEAT_COUNT> key_state;
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if (key_state.add(digitalRead(KEY) == HIGH)) // Assumes 'HIGH' is 'pressed' and 'LOW' is 'released'.
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{
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if (key_state.is_set())
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{
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led_state = (led_state == LOW ? HIGH : LOW); // Toggle the LED state on every validated press or repeat.
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digitalWrite(LED_BUILTIN, led_state);
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}
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}
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delay(SAMPLE_TIME); // Wait 1ms
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}
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