Merge pull request #380 from brentru/fix-esp8266-led-state

Fix Adafruit Feather HUZZAH ESP8266 builtin LED behavior

Author: brentru

src/Wippersnapper.cpp

@@ -1998,6 +1998,7 @@ void Wippersnapper::pingBroker() {
   }
   // blink status LED every STATUS_LED_KAT_BLINK_TIME millis
   if (millis() > (_prvKATBlink + STATUS_LED_KAT_BLINK_TIME)) {
+    WS_DEBUG_PRINTLN("KAT BLINK!");
     statusLEDBlink(WS_LED_STATUS_KAT);
     _prvKATBlink = millis();
   }

src/components/digitalIO/Wippersnapper_DigitalGPIO.cpp

@@ -73,7 +73,15 @@ void Wippersnapper_DigitalGPIO::initDigitalPin(
     WS_DEBUG_PRINT("Configured digital output pin on D");
     WS_DEBUG_PRINTLN(pinName);
     pinMode(pinName, OUTPUT);
+// Initialize LOW
+#if defined(ARDUINO_ESP8266_ADAFRUIT_HUZZAH)
+    // The Adafruit Feather ESP8266's built-in LED is reverse wired so setting
+    // the pin LOW will turn the LED on.
+    digitalWrite(STATUS_LED_PIN, !0);
+#else
+    pinMode(pinName, OUTPUT);
     digitalWrite(pinName, LOW); // initialize LOW
+#endif
   } else if (
       direction ==
       wippersnapper_pin_v1_ConfigurePinRequest_Direction_DIRECTION_INPUT) {
@@ -173,7 +181,16 @@ void Wippersnapper_DigitalGPIO::digitalWriteSvc(uint8_t pinName, int pinValue) {
   WS_DEBUG_PRINT(pinName);
   WS_DEBUG_PRINT(" to ");
   WS_DEBUG_PRINTLN(pinValue);
+
+// Write to the GPIO pin
+#if defined(ARDUINO_ESP8266_ADAFRUIT_HUZZAH)
+  // The Adafruit Feather ESP8266's built-in LED is reverse wired so setting the
+  // pin LOW will turn the LED on.
+  if (pinName == 0)
+    digitalWrite(pinName, !pinValue);
+#else
   digitalWrite(pinName, pinValue);
+#endif
 }
 
 /**********************************************************/

src/components/statusLED/Wippersnapper_StatusLED.cpp

@@ -67,9 +67,19 @@ bool statusLEDInit() {
 #endif
 
 #ifdef USE_STATUS_LED
-  pinMode(STATUS_LED_PIN, OUTPUT); // Initialize LED
-  digitalWrite(STATUS_LED_PIN, 0); // Turn OFF LED
-  WS.lockStatusLED = true;         // set global pin "lock" flag
+  pinMode(STATUS_LED_PIN,
+          OUTPUT); // Initialize LED
+
+// Turn OFF LED
+#if defined(ARDUINO_ESP8266_ADAFRUIT_HUZZAH)
+  // The Adafruit Feather ESP8266's built-in LED is reverse
+  // wired so setting the pin LOW will turn the LED on.
+  digitalWrite(STATUS_LED_PIN, !0);
+#else
+  digitalWrite(STATUS_LED_PIN, 0);
+#endif
+
+  WS.lockStatusLED = true; // set global pin "lock" flag
   is_success = true;
 #endif
   return is_success;
@@ -195,8 +205,15 @@ void statusLEDFade(uint32_t color, int numFades = 3) {
   pinMode(STATUS_LED_PIN, OUTPUT);
 #endif
 
+// turn OFF ESP8266's status LED
+#if defined(ARDUINO_ESP8266_ADAFRUIT_HUZZAH)
+  // The Adafruit Feather ESP8266's built-in LED is reverse wired
+  // clear status LED color
+  setStatusLEDColor(BLACK ^ 1);
+#else
   // clear status LED color
   setStatusLEDColor(BLACK);
+#endif
 }
 
 /****************************************************************************/
@@ -275,6 +292,12 @@ void statusLEDBlink(ws_led_status_t statusState) {
     setStatusLEDColor(ledColor);
     delay(100);
     setStatusLEDColor(BLACK);
+#if defined(ARDUINO_ESP8266_ADAFRUIT_HUZZAH)
+    // The Adafruit Feather ESP8266's built-in LED is reverse wired
+    setStatusLEDColor(BLACK ^ 1);
+#else
+    setStatusLEDColor(BLACK);
+#endif
     delay(100);
     blinkNum--;
   }