New function for backlight - 3 brigjhtness steps

lib/obp60task/OBP60Extensions.cpp

@@ -331,6 +331,40 @@ void toggleBacklightLED(uint brightness, const Color &color){
     ledTaskData->setLedData(current); 
 }
 
+void stepsBacklightLED(uint brightness, const Color &color){
+    static uint step = 0;
+    uint actBrightness = 0;
+    // Different brightness steps
+    if(step == 0){
+        actBrightness = brightness;         // 100% from brightess
+        statusBacklightLED = true;
+    }
+    if(step == 1){
+        actBrightness = brightness * 0.5;   // 50% from brightess
+        statusBacklightLED = true;
+    }
+    if(step == 2){
+        actBrightness = brightness * 0.2;   // 20% from brightess
+        statusBacklightLED = true;
+    }
+    if(step == 3){
+        actBrightness = 0;                  // 0%
+        statusBacklightLED = false;
+    }
+    if(actBrightness < 5){                  // Limiter if values too low
+        actBrightness = 5;
+    }
+    step = step + 1;    // Increment step counter
+    if(step == 4){      // Reset counter
+        step = 0;
+    }
+    if (ledTaskData == nullptr) return;
+    Color nv=setBrightness(statusBacklightLED?color:COLOR_BLACK,actBrightness);
+    LedInterface current=ledTaskData->getLedData();
+    current.setBacklight(nv);
+    ledTaskData->setLedData(current); 
+}
+
 void setFlashLED(bool status){
     if (ledTaskData == nullptr) return;
     Color c=status?COLOR_RED:COLOR_BLACK;

lib/obp60task/OBP60Extensions.h

@@ -96,6 +96,7 @@ void togglePortPin(uint pin);                   // Toggle extension port pin
 Color colorMapping(const String &colorString);          // Color mapping string to CHSV colors
 void setBacklightLED(uint brightness, const Color &color);// Set backlight LEDs
 void toggleBacklightLED(uint brightness,const Color &color);// Toggle backlight LEDs
+void stepsBacklightLED(uint brightness, const Color &color);// Set backlight LEDs in 4 steps (100%, 50%, 10%, 0%)
 BacklightMode backlightMapping(const String &backlightString);// Configuration string to value
 
 void setFlashLED(bool status);                  // Set flash LED

lib/obp60task/config.json

@@ -1273,9 +1273,9 @@
         "type": "number",
         "default": "50",
         "check": "checkMinMax",
-        "min": 20,
+        "min": 5,
         "max": 100,
-        "description": "Backlight brightness [20...100%]",
+        "description": "Backlight brightness [5...100%]",
         "category": "OBP60 Display",
         "capabilities": {
             "obp60":"true"

lib/obp60task/config_obp40.json

@@ -1285,9 +1285,9 @@
         "type": "number",
         "default": "50",
         "check": "checkMinMax",
-        "min": 20,
+        "min": 5,
         "max": 100,
-        "description": "Backlight brightness [20...100%]",
+        "description": "Backlight brightness [5...100%]",
         "category": "OBP40 Display",
         "capabilities": {
             "obp40": "false"

lib/obp60task/obp60task.cpp

@@ -660,7 +660,7 @@ void OBP60Task(GwApi *api){
                     // if(String(backlight) == "Control by Key"){
                         if(keyboardMessage == 6){
                             LOG_DEBUG(GwLog::LOG,"Toggle Backlight LED");
-                            toggleBacklightLED(commonData.backlight.brightness, commonData.backlight.color);
+                            stepsBacklightLED(commonData.backlight.brightness, commonData.backlight.color);
                         }
                     }
                     #ifdef BOARD_OBP40S3