add blink example with polledTimeout

esp8266 · devyte · Nov 26, 2018 · Oct 2, 2018 · Oct 2, 2018 · Oct 18, 2018
commit c15c76c5dbba7a714329ea73d3e81a3136077450
diff --git a/libraries/esp8266/examples/BlinkPolledTimeout/BlinkPolledTimeout.ino b/libraries/esp8266/examples/BlinkPolledTimeout/BlinkPolledTimeout.ino
@@ -0,0 +1,60 @@
+/*
+  ESP8266 Blink by Daniel Salazar
+  Copyright 2018
+
+  Blink the blue LED on the ESP module using polledTimeout class
+  This example code is in the public domain
+
+  Note that this sketch uses LED_BUILTIN to find the pin with the internal LED
+*/
+
+#include <PolledTimeout.h>
+
+void ledOn() {
+  digitalWrite(LED_BUILTIN, LOW);   // Turn the LED on (Note that LOW is the voltage level
+}
+
+void ledOff() {
+  digitalWrite(LED_BUILTIN, HIGH);  // Turn the LED off by making the voltage HIGH
+}
+
+void ledToggle() {
+  digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));  // Change the state of the LED
+}
+
+
+
+esp8266::polledTimeoutPeriodic halfPeriod(500); //use fully qualified type and avoid importing all ::esp8266 namespace to the global namespace
+
+// the setup function runs only once at start
+void setup() {
+  pinMode(LED_BUILTIN, OUTPUT);     // Initialize the LED_BUILTIN pin as an output
+
+  using esp8266::polledTimeoutOneShot; //import the type to the local namespace
+
+  //STEP1; turn the led ON
+  ledOn();
+
+  //STEP2: wait for ON timeout
+  polledTimeoutOneShot timeoutOn(2000);
+  while(!timeoutOn)
+    yield();
+
+  //STEP3: turn the led OFF
+  ledOff();
+
+  //STEP4: wait for OFF timeout to assure the led is kept off for this time before exiting setup
+  polledTimeoutOneShot timeoutOff(2000);
+  while(!timeoutOff)
+    yield();
+
+  //Done with STEPs, do other stuff
+  halfPeriod.reset(); //halfPeriod is global, so it gets inited on sketch start. Clear it here to make it ready for loop, where it's actually used.
+}
+
+
+// the loop function runs over and over again forever
+void loop() {
+  if(halfPeriod)
+    ledToggle();
+}