37 lines
858 B
Plaintext
37 lines
858 B
Plaintext
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/*
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This code will blink an LED attached to pin 13 on and off.
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It will stay on for 0.25 seconds.
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It will stay off for 1 second.
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*/
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#include <Metro.h> //Include Metro library
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#define LED 13 // Define the led's pin
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//Create a variable to hold theled's current state
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int state = HIGH;
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// Instanciate a metro object and set the interval to 250 milliseconds (0.25 seconds).
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Metro ledMetro = Metro(250);
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void setup()
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{
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pinMode(LED,OUTPUT);
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digitalWrite(LED,state);
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}
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void loop()
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{
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if (ledMetro.check() == 1) { // check if the metro has passed its interval .
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if (state==HIGH) {
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state=LOW;
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ledMetro.interval(250); // if the pin is HIGH, set the interval to 0.25 seconds.
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}
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else {
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ledMetro.interval(1000); // if the pin is LOW, set the interval to 1 second.
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state=HIGH;
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}
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digitalWrite(LED,state);
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}
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}
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