allow to control LEB brightness via config UI

lib/hardware/GwHardware.h

@@ -19,6 +19,7 @@
 #define GWSERIAL_TYPE_TX 4
 #include <GwConfigItem.h>
 #include <HardwareSerial.h>
+#include "GwAppInfo.h"
 #include "GwUserTasks.h"
 
 //general definitions for M5AtomLite
@@ -230,4 +231,13 @@
   #endif
 #endif
 
+#ifdef GWLED_FASTLED
+  #define CFGMODE_ledBrightness GwConfigInterface::NORMAL
+  #ifdef GWLED_BRIGHTNESS
+    #define CFGDEFAULT_ledBrightness GWSTRINGIFY(GWLED_BRIGHTNESS)
+  #endif
+#else
+  #define CFGMODE_ledBrightness GwConfigInterface::HIDDEN
+#endif
+
 #endif

lib/led/GwLeds.cpp

@@ -38,11 +38,7 @@ void handleLeds(void *param){
     #else
     FastLED.addLeds<GWLED_TYPE,GWLED_PIN>(leds,1);
     #endif
-    #ifdef GWLED_BRIGHTNESS
-    uint8_t brightness=GWLED_BRIGHTNESS;
-    #else
-    uint8_t brightness=128; //50%
-    #endif
+    uint8_t brightness=api->getConfig()->getInt(GwConfigDefinitions::ledBrightness,128);
     GwLedMode currentMode=mode;
     leds[0]=colorFromMode(currentMode);
     FastLED.setBrightness(brightness);

web/config.json

@@ -156,6 +156,16 @@
         "description": "log level at the USB port",
         "category":"system"
     },
+    {
+        "name":"ledBrightness",
+        "label":"led brightness",
+        "type":"number",
+        "default":64,
+        "min":0,
+        "max":255,
+        "description":"the brightness of the led (0..255)",
+        "category":"system"
+    },
     {
         "name": "minXdrInterval",
         "label":"min XDR interval",