Remove analog flicker (#678)

* remove analog LED flicker

run SetRgbwPwm from main loop and with GetPixelColor(0) to get all effects using fade_out() working.

* correct unintended bitwise AND to logical AND

* Update analogLastShow

* new Arduino Core WaveForm library included

* new Arduino Core only for 8266

* correct formating + define for MQTT_KEEP_ALIVE

* fix for ESP32

* reduce scope of variable "done"

* call analogWrite only if Color or Bri did change

* Remove duplicate wifi sleep code

Co-authored-by: Aircoookie <cschwinne@gmail.com>

wled00/wled00.ino

@@ -93,6 +93,18 @@
   #include <IRutils.h>
  #endif
 
+// remove flicker because PWM signal of RGB channels can become out of phase
+#if defined(WLED_USE_ANALOG_LEDS) && defined(ESP8266)
+  #include "src/dependencies/arduino/core_esp8266_waveform.h"
+#endif
+
+// enable additional debug output
+#ifdef WLED_DEBUG
+  #ifndef ESP8266
+    #include <rom/rtc.h>
+  #endif
+#endif
+
 //version code in format yymmddb (b = daily build)
 #define VERSION 2002192
 
@@ -526,6 +538,10 @@ void loop() {
 
   handleOverlays();
   yield();
+  #ifdef WLED_USE_ANALOG_LEDS 
+  strip.setRgbwPwm();
+  #endif
+
   if (doReboot) reset();
 
   if (!realtimeMode) //block stuff if WARLS/Adalight is enabled