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- // ---------------------------------------------------------------------------
- // While the NewPing library's primary goal is to interface with ultrasonic sensors, interfacing with
- // the Timer2 interrupt was a result of creating an interrupt-based ping method. Since these Timer2
- // interrupt methods were built, the library may as well provide the functionality to use these methods
- // in your sketches. This shows how simple it is (no ultrasonic sensor required). Keep in mind that
- // these methods use Timer2, as does NewPing's ping_timer method for using ultrasonic sensors. You
- // can't use ping_timer at the same time you're using timer_ms or timer_us as all use the same timer.
- // ---------------------------------------------------------------------------
- #include <NewPing.h>
- #define LED_PIN 13 // Pin with LED attached.
- void setup() {
- pinMode(LED_PIN, OUTPUT);
- NewPing::timer_ms(500, toggleLED); // Create a Timer2 interrupt that calls toggleLED in your sketch once every 500 milliseconds.
- }
- void loop() {
- // Do anything here, the Timer2 interrupt will take care of the flashing LED without your intervention.
- }
- void toggleLED() {
- digitalWrite(LED_PIN, !digitalRead(LED_PIN)); // Toggle the LED.
- }
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