new build flag WLEDMM_WIFI_POWERON_HACK

This ensures that WiFi gets powered ON (useful for boards with small "RainSun" crystal Wi-Fi antenna)

platformio.ini

@@ -1113,6 +1113,7 @@ build_flags = ${common.build_flags} ${esp32.build_flagsV4} ${esp32c3.build_flags
   ; -DARDUINO_USB_CDC_ON_BOOT=1  ;; enable CDC USB -> needed for debugging over serial USB
   -DARDUINO_USB_CDC_ON_BOOT=0    ;; disable CDC USB
   -D SERVERNAME='"WLED-C3"'
+  ;-D WLEDMM_WIFI_POWERON_HACK ;; use this _only_ if your device is not able to make a WiFI connection!
   ;-D WLED_DISABLE_INFRARED ;; save flash space
   ;-D WLED_DISABLE_ALEXA    ;; save flash space
   -D LEDPIN=8 ;; onboard neopixel 5x5 Matrix. Attach your own LEDs to GPIO 20

wled00/wled.cpp

@@ -784,8 +784,10 @@ void WLED::initConnection()
   WiFi.begin(clientSSID, clientPass);
 
 #ifdef ARDUINO_ARCH_ESP32
-  // WLEDMM - if your board has issues connecting to WiFi, try uncommenting this
-  // WiFi.setTxPower(WIFI_POWER_5dBm);  // required for ESP32-C3FH4-RGB
+#ifdef WLEDMM_WIFI_POWERON_HACK
+  // WLEDMM - if your board has issues connecting to WiFi, try this
+  WiFi.setTxPower(WIFI_POWER_5dBm);  // required for ESP32-C3FH4-RGB
+#endif
   WiFi.setSleep(!noWifiSleep);
   WiFi.setHostname(hostname);
 #else