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GPIO IRQ example: add check for interrupt source (#401)
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@ -174,7 +174,9 @@ fn IO_IRQ_BANK0() {
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// these will be of type `&mut LedPin` and `&mut ButtonPin`, so we don't have
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// to move them back into the static after we use them
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let (led, button) = gpios;
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// Check if the interrupt source is from the pushbutton going from high-to-low.
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// Note: this will always be true in this example, as that is the only enabled GPIO interrupt source
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if button.interrupt_status(EdgeLow) {
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// toggle can't fail, but the embedded-hal traits always allow for it
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// we can discard the return value by assigning it to an unnamed variable
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let _ = led.toggle();
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@ -184,5 +186,6 @@ fn IO_IRQ_BANK0() {
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button.clear_interrupt(EdgeLow);
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}
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}
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}
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// End of file
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