3.3.7

libraries/Ticker/examples/Blinker/Blinker.ino

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+#include <Arduino.h>
+#include <Ticker.h>
+
+// attach a LED to pPIO 21
+#define LED_PIN 21
+
+Ticker blinker;
+Ticker toggler;
+Ticker changer;
+float blinkerPace = 0.1;       //seconds
+const float togglePeriod = 5;  //seconds
+
+void change() {
+  blinkerPace = 0.5;
+}
+
+void blink() {
+  digitalWrite(LED_PIN, !digitalRead(LED_PIN));
+}
+
+void toggle() {
+  static bool isBlinking = false;
+  if (isBlinking) {
+    blinker.detach();
+    isBlinking = false;
+  } else {
+    blinker.attach(blinkerPace, blink);
+    isBlinking = true;
+  }
+  digitalWrite(LED_PIN, LOW);  //make sure LED on on after toggling (pin LOW = led ON)
+}
+
+void setup() {
+  pinMode(LED_PIN, OUTPUT);
+  toggler.attach(togglePeriod, toggle);
+  changer.once(30, change);
+}
+
+void loop() {}

libraries/Ticker/examples/TickerBasic/TickerBasic.ino

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+/*
+  Basic Ticker usage
+
+  Ticker is an object that will call a given function with a certain period.
+  Each Ticker calls one function. You can have as many Tickers as you like,
+  memory being the only limitation.
+
+  A function may be attached to a ticker and detached from the ticker.
+  There are two variants of the attach function: attach and attach_ms.
+  The first one takes period in seconds, the second one in milliseconds.
+
+  The built-in LED will be blinking.
+*/
+
+#include <Ticker.h>
+
+#ifndef LED_BUILTIN
+#define LED_BUILTIN 13
+#endif
+
+Ticker flipper;
+
+int count = 0;
+
+void flip() {
+  int state = digitalRead(LED_BUILTIN);  // get the current state of GPIO1 pin
+  digitalWrite(LED_BUILTIN, !state);     // set pin to the opposite state
+
+  ++count;
+  // when the counter reaches a certain value, start blinking like crazy
+  if (count == 20) {
+    flipper.attach(0.1, flip);
+  }
+  // when the counter reaches yet another value, stop blinking
+  else if (count == 120) {
+    flipper.detach();
+  }
+}
+
+void setup() {
+  pinMode(LED_BUILTIN, OUTPUT);
+  digitalWrite(LED_BUILTIN, LOW);
+
+  // flip the pin every 0.3s
+  flipper.attach(0.3, flip);
+}
+
+void loop() {}

libraries/Ticker/examples/TickerParameter/TickerParameter.ino

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+/*
+  Passing parameters to Ticker callbacks
+
+  Apart from void(void) functions, the Ticker library supports
+  functions taking one argument. This argument's size has to be less or
+  equal to 4 bytes (so char, short, int, float, void*, char* types will do).
+
+  This sample runs two tickers that both call one callback function,
+  but with different arguments.
+
+  The built-in LED will be pulsing.
+*/
+
+#include <Ticker.h>
+
+#ifndef LED_BUILTIN
+#define LED_BUILTIN 13
+#endif
+
+Ticker tickerSetLow;
+Ticker tickerSetHigh;
+Ticker tickerSetChar;
+
+void setPinLow() {
+  digitalWrite(LED_BUILTIN, 0);
+}
+
+void setPinHigh() {
+  digitalWrite(LED_BUILTIN, 1);
+}
+
+void setPin(int state) {
+  digitalWrite(LED_BUILTIN, state);
+}
+
+void setPinChar(char state) {
+  digitalWrite(LED_BUILTIN, state);
+}
+
+void setup() {
+  pinMode(LED_BUILTIN, OUTPUT);
+
+  // every 25 ms, call setPinLow()
+  tickerSetLow.attach_ms(25, setPinLow);
+
+  // every 26 ms, call setPinHigh()
+  tickerSetHigh.attach_ms(26, setPinHigh);
+
+  // every 54 ms, call setPinChar(1)
+  tickerSetChar.attach_ms(26, setPinChar, (char)1);
+}
+
+void loop() {}