Simplify bus creation logic as requested - replace complex binary search with simple default count fallback

Co-authored-by: DedeHai <6280424+DedeHai@users.noreply.github.com>

Author: Copilot

wled00/FX_fcn.cpp

@@ -1175,94 +1175,22 @@ void WS2812FX::finalizeInit() {
   digitalCount = 0;
   #endif
 
-  // create buses/outputs with memory-aware truncation
+  // create buses/outputs
   unsigned mem = 0;
-  std::vector<BusConfig> truncatedConfigs;
-  
   for (auto bus : busConfigs) {
     // Calculate what this bus would use with its current configuration
     unsigned busMemUsage = bus.memUsage(Bus::isDigital(bus.type) && !Bus::is2Pin(bus.type) ? digitalCount : 0);
 
-    if (mem + busMemUsage <= MAX_LED_MEMORY) {
-      // Bus fits as-is, add it
-      if (BusManager::add(bus) != -1) {
-        mem += busMemUsage;
-        if (Bus::isDigital(bus.type) && !Bus::is2Pin(bus.type)) digitalCount++;
-        truncatedConfigs.push_back(bus);
-      } else break;
-    } else {
-      // Bus doesn't fit, try to truncate LED count to fit available memory
-      unsigned remainingMem = MAX_LED_MEMORY - mem;
-      if (remainingMem > 0) {
-        // Binary search to find maximum LED count that fits in remaining memory
-        uint16_t maxCount = bus.count;
-        uint16_t minCount = 1;
-        uint16_t bestCount = 0;
-        
-        while (minCount <= maxCount) {
-          uint16_t testCount = minCount + (maxCount - minCount) / 2;
-          BusConfig testBus = bus;
-          testBus.count = testCount;
-          
-          unsigned testMem = testBus.memUsage(Bus::isDigital(testBus.type) && !Bus::is2Pin(testBus.type) ? digitalCount : 0);
-          
-          if (testMem <= remainingMem) {
-            bestCount = testCount;
-            minCount = testCount + 1;
-          } else {
-            maxCount = testCount - 1;
-          }
-        }
-        
-        if (bestCount > 0) {
-          // Found a truncated configuration that fits
-          bus.count = bestCount;
-          DEBUG_PRINTF_P(PSTR("Truncated bus %d from %u to %u LEDs to fit memory constraints.\n"), (int)bus.type, (int)maxCount, (int)bestCount);
-          
-          if (BusManager::add(bus) != -1) {
-            mem += bus.memUsage(Bus::isDigital(bus.type) && !Bus::is2Pin(bus.type) ? digitalCount : 0);
-            if (Bus::isDigital(bus.type) && !Bus::is2Pin(bus.type)) digitalCount++;
-            truncatedConfigs.push_back(bus);
-          }
-        } else {
-          DEBUG_PRINTF_P(PSTR("Out of LED memory! Bus %d (%d) #%u not created - no room for even 1 LED."), (int)bus.type, (int)bus.count, digitalCount);
-        }
-      } else {
-        DEBUG_PRINTF_P(PSTR("Out of LED memory! Bus %d (%d) #%u not created."), (int)bus.type, (int)bus.count, digitalCount);
-      }
-    }
-  }
-  
-  // If no buses were successfully created, create a minimal fallback using first user config or defaults
-  if (BusManager::getNumBusses() == 0) {
-    DEBUG_PRINTLN(F("No buses created due to memory limits! Creating fallback bus with user config or defaults."));
-    
-    BusConfig fallbackCfg;
-    if (!busConfigs.empty()) {
-      // Use first user configuration but with minimal LED count
-      fallbackCfg = busConfigs[0];
-      fallbackCfg.count = 1;  // Start with minimal count
-      fallbackCfg.start = 0;  // Ensure it starts at 0
-      
-      // Try to fit as many LEDs as possible within memory constraints
-      for (uint16_t testCount = 1; testCount <= DEFAULT_LED_COUNT; testCount++) {
-        fallbackCfg.count = testCount;
-        unsigned testMem = fallbackCfg.memUsage(Bus::isDigital(fallbackCfg.type) && !Bus::is2Pin(fallbackCfg.type) ? 0 : 0);
-        if (testMem > MAX_LED_MEMORY) {
-          fallbackCfg.count = (testCount > 1) ? testCount - 1 : 1;
-          break;
-        }
-      }
-      
-      DEBUG_PRINTF_P(PSTR("Using user config: type=%d, pin=%d, count=%d\n"), 
-                     (int)fallbackCfg.type, (int)fallbackCfg.pins[0], (int)fallbackCfg.count);
-    } else {
-      // Use complete defaults
-      uint8_t defPin[1] = {DEFAULT_LED_PIN};
-      fallbackCfg = BusConfig(DEFAULT_LED_TYPE, defPin, 0, DEFAULT_LED_COUNT, DEFAULT_LED_COLOR_ORDER, false, 0, RGBW_MODE_MANUAL_ONLY, 0);
+    // If memory exceeds limit, set count to default length and add anyway
+    if (mem + busMemUsage > MAX_LED_MEMORY) {
+      bus.count = DEFAULT_LED_COUNT;
+      DEBUG_PRINTF_P(PSTR("Bus %d memory usage exceeds limit, setting count to default %d\n"), (int)bus.type, DEFAULT_LED_COUNT);
     }
 
-    BusManager::add(fallbackCfg);
+    if (BusManager::add(bus) != -1) {
+      mem += bus.memUsage(Bus::isDigital(bus.type) && !Bus::is2Pin(bus.type) ? digitalCount : 0);
+      if (Bus::isDigital(bus.type) && !Bus::is2Pin(bus.type)) digitalCount++;
+    } else break;
   }
 
   busConfigs.clear();