27 lines
513 B
C++
27 lines
513 B
C++
const int dot_pin = 2;
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const int dash_pin = 3;
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char last_state = 'X';
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void setup() {
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Serial.begin(115200);
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pinMode(dot_pin, INPUT_PULLUP);
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pinMode(dash_pin, INPUT_PULLUP);
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}
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void loop() {
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char current_state = '0';
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if (digitalRead(dot_pin) == LOW) {
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current_state += 1;
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}
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if (digitalRead(dash_pin) == LOW) {
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current_state += 2;
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}
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if (current_state != last_state) {
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Serial.print(current_state);
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last_state = current_state;
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}
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delay(1); // Limit update rate under 1kHz
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}
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