Fix realtime mode disabled by brightness change

Fix realtime mode not working immediately at turn on
Fix individual segment control not working immediately at turn on

wled00/FX.h

@@ -625,7 +625,7 @@ class WS2812FX {
       setColor(uint8_t slot, uint8_t r, uint8_t g, uint8_t b, uint8_t w = 0),
       setColor(uint8_t slot, uint32_t c),
       setCCT(uint16_t k),
-      setBrightness(uint8_t b),
+      setBrightness(uint8_t b, bool direct = false),
       setRange(uint16_t i, uint16_t i2, uint32_t col),
       setShowCallback(show_callback cb),
       setTransition(uint16_t t),

wled00/FX_fcn.cpp

@@ -133,7 +133,8 @@ void WS2812FX::service() {
 
     if (!SEGMENT.isActive()) continue;
 
-    if(nowUp > SEGENV.next_time || _triggered || (doShow && SEGMENT.mode == 0)) //last is temporary
+    // last condition ensures all solid segments are updated at the same time
+    if(nowUp > SEGENV.next_time || _triggered || (doShow && SEGMENT.mode == 0))
     {
       if (SEGMENT.grouping == 0) SEGMENT.grouping = 1; //sanity check
       doShow = true;
@@ -426,7 +427,7 @@ void WS2812FX::setCCT(uint16_t k) {
   }
 }
 
-void WS2812FX::setBrightness(uint8_t b) {
+void WS2812FX::setBrightness(uint8_t b, bool direct) {
   if (gammaCorrectBri) b = gamma8(b);
   if (_brightness == b) return;
   _brightness = b;
@@ -436,8 +437,13 @@ void WS2812FX::setBrightness(uint8_t b) {
       _segments[i].setOption(SEG_OPTION_FREEZE, false);
     }
   }
-	unsigned long t = millis();
+  if (direct) {
-  if (_segment_runtimes[0].next_time > t + 22 && t - _lastShow > MIN_SHOW_DELAY) show(); //apply brightness change immediately if no refresh soon
+    // would be dangerous if applied immediately (could exceed ABL), but will not output until the next show()
+    busses.setBrightness(b);
+  } else {
+	  unsigned long t = millis();
+    if (_segment_runtimes[0].next_time > t + 22 && t - _lastShow > MIN_SHOW_DELAY) show(); //apply brightness change immediately if no refresh soon
+  }
 }
 
 uint8_t WS2812FX::getBrightness(void) {

wled00/e131.cpp

@@ -130,7 +130,7 @@ void handleE131Packet(e131_packet_t* p, IPAddress clientIP, byte protocol){
       if (DMXOldDimmer != e131_data[DMXAddress+0]) {
         DMXOldDimmer = e131_data[DMXAddress+0];
         bri = e131_data[DMXAddress+0];
-        strip.setBrightness(bri);
+        strip.setBrightness(bri, true);
       }
       for (uint16_t i = 0; i < totalLen; i++)
         setRealtimePixel(i, e131_data[DMXAddress+1], e131_data[DMXAddress+2], e131_data[DMXAddress+3], wChannel);
@@ -184,7 +184,7 @@ void handleE131Packet(e131_packet_t* p, IPAddress clientIP, byte protocol){
           previousLeds = 0;
           // First DMX address is dimmer in DMX_MODE_MULTIPLE_DRGB mode.
           if (DMXMode == DMX_MODE_MULTIPLE_DRGB) {
-            strip.setBrightness(e131_data[dmxOffset++]);
+            strip.setBrightness(e131_data[dmxOffset++], true);
           }
         } else {
           // All subsequent universes start at the first channel.

wled00/json.cpp

@@ -177,7 +177,12 @@ void deserializeSegment(JsonObject elem, byte it, byte presetId)
   if (!iarr.isNull()) {
     uint8_t oldSegId = strip.setPixelSegment(id);
 
-    //freeze and init to black
+    // set brightness immediately and disable transition
+    transitionDelayTemp = 0;
+    jsonTransitionOnce = true;
+    strip.setBrightness(scaledBri(bri), true);
+
+    // freeze and init to black
     if (!seg.getOption(SEG_OPTION_FREEZE)) {
       seg.setOption(SEG_OPTION_FREEZE, true);
       strip.fill(0);
@@ -263,7 +268,7 @@ bool deserializeState(JsonObject root, byte callMode, byte presetId)
     transitionDelayTemp *= 100;
     jsonTransitionOnce = true;
   }
-  strip.setTransition(transitionDelayTemp);
+  strip.setTransition(transitionDelayTemp); // required here for color transitions to have correct duration
 
   tr = root[F("tb")] | -1;
   if (tr >= 0) strip.timebase = ((uint32_t)tr) - millis();
@@ -290,10 +295,16 @@ bool deserializeState(JsonObject root, byte callMode, byte presetId)
   realtimeOverride = root[F("lor")] | realtimeOverride;
   if (realtimeOverride > 2) realtimeOverride = REALTIME_OVERRIDE_ALWAYS;
 
+  bool liveEnabled = false;
   if (root.containsKey("live")) {
     bool lv = root["live"];
-    if (lv) realtimeLock(65000); //enter realtime without timeout
+    if (lv) {
-    else    realtimeTimeout = 0; //cancel realtime mode immediately
+      transitionDelayTemp = 0;
+      jsonTransitionOnce = true;
+      liveEnabled = true; // triggers realtimeLock() below
+      realtimeLock(65000);
+    }
+    else realtimeTimeout = 0; //cancel realtime mode immediately
   }
 
   strip.setMainSegmentId(root[F("mainseg")] | strip.getMainSegmentId());
@@ -370,6 +381,7 @@ bool deserializeState(JsonObject root, byte callMode, byte presetId)
   }
 
   stateUpdated(callMode);
+  if (liveEnabled) realtimeTimeout = UINT32_MAX; // force indefinite timeout if this request contained {"live":true}
 
   return stateResponse;
 }

wled00/udp.cpp

@@ -153,13 +153,13 @@ void realtimeLock(uint32_t timeoutMs, byte md)
     if (timeoutMs == 255001 || timeoutMs == 65000) realtimeTimeout = UINT32_MAX;
   }
   // if strip is off (bri==0) and not already in RTM
-  if (bri == 0 && !realtimeMode) {
+  if (briT == 0 && !realtimeMode) {
-    strip.setBrightness(scaledBri(briLast));
+    strip.setBrightness(scaledBri(briLast), true);
   }
   realtimeMode = md;
 
-  if (arlsForceMaxBri && !realtimeOverride) strip.setBrightness(scaledBri(255));
+  if (arlsForceMaxBri && !realtimeOverride) strip.setBrightness(scaledBri(255), true);
-  if (md == REALTIME_MODE_GENERIC) strip.show();
+  if (briT > 0 && md == REALTIME_MODE_GENERIC) strip.show();
 }
 
 

wled00/wled_serial.cpp

@@ -174,7 +174,7 @@ void handleSerial()
         if (!realtimeOverride) setRealtimePixel(pixel++, red, green, blue, 0);
         if (--count > 0) state = AdaState::Data_Red;
         else {
-          if (!realtimeMode && bri == 0) strip.setBrightness(briLast);
+          if (!realtimeMode && bri == 0) strip.setBrightness(briLast, true);
           realtimeLock(realtimeTimeoutMs, REALTIME_MODE_ADALIGHT);
 
           if (!realtimeOverride) strip.show();