ESP8266 BlinkWithoutDelay

Author: probonopd

hardware/esp8266com/esp8266/libraries/esp8266/examples/BlinkWithoutDelay/BlinkWithoutDelay.ino

@@ -0,0 +1,33 @@
+/* 
+ ESP8266 BlinkWithoutDelay by Simon Peter
+ Blink the blue LED on the ESP-01 module
+ Based on the Arduino Blink without Delay example
+ This example code is in the public domain
+*/
+
+const int ledPin =  1;  // The blue LED on the ESP-01 module is connected to GPIO1 
+                        // (which is also the TXD pin; so we cannot use 
+                        // Serial.print() at the same time
+
+int ledState = LOW;     
+
+unsigned long previousMillis = 0;
+const long interval = 1000;
+
+void setup() {
+  pinMode(ledPin, OUTPUT);
+}
+
+void loop()
+{
+  unsigned long currentMillis = millis();
+  if(currentMillis - previousMillis >= interval) {
+    previousMillis = currentMillis;   
+    if (ledState == LOW)
+      ledState = HIGH;  // Note that this switches the LED *off*
+    else
+      ledState = LOW;   // Note that this switches the LED *on*
+    digitalWrite(ledPin, ledState);
+  }
+}
+