37 lines
944 B
C++
37 lines
944 B
C++
/*
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Button
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Turns on and off the built-in LED when the built-in button is
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pressed.
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Ported to Maple from the Arduino example 27 May 2011
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by Marti Bolivar
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*/
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void setup() {
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// Initialize the built-in LED pin as an output:
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pinMode(33, OUTPUT);
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// Initialize the built-in button (labeled BUT) as an input:
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pinMode(BOARD_BUTTON_PIN, INPUT);
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}
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#define BUTTON_DEBOUNCE_DELAY 1
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uint8 isButtonPressed(uint8 pin=BOARD_BUTTON_PIN,
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uint32 pressedLevel=BOARD_BUTTON_PRESSED_LEVEL) {
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if (digitalRead(pin) == pressedLevel) {
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delay(BUTTON_DEBOUNCE_DELAY);
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while (digitalRead(pin) == pressedLevel)
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;
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return true;
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}
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return false;
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}
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void loop() {
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// Check if the button is pressed.
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if (isButtonPressed()) {
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// If so, turn the LED from on to off, or from off to on:
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digitalWrite(33,!digitalRead(33));// Turn the LED from off to on, or on to off
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}
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}
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