add blink

Author: thijstriemstra

LED_PCF8574/LED_PCF8574.cpp

@@ -23,6 +23,15 @@ void LED_PCF8574::begin() {
 }
 
 void LED_PCF8574::loop() {
+  if (blink) {
+    unsigned long currentMillis = millis();
+
+    if (currentMillis - _previousMillis >= interval) {
+      _previousMillis = currentMillis;
+
+      toggle();
+    }
+  }
 }
 
 void LED_PCF8574::update() {
@@ -31,11 +40,13 @@ void LED_PCF8574::update() {
 
 void LED_PCF8574::enable() {
   state = HIGH;
+  blink = false;
   update();
 }
 
 void LED_PCF8574::disable() {
   state = LOW;
+  blink = false;
   update();
 }
 

LED_PCF8574/LED_PCF8574.h

@@ -19,6 +19,9 @@ class LED_PCF8574
       int led_state = LOW
     );
     int state;
+    bool blink = false;
+    unsigned long interval = 500;
+
     void begin();
     void loop();
     void enable();
@@ -29,6 +32,7 @@ class LED_PCF8574
     void update();
 
     int _pin;
+    unsigned long _previousMillis = 0;
     MultiPlexer_PCF8574* _expander;
 };