Synchronus applyPreset() from HTTP JSON API call.

Bugfix for HTTP API preset.
WS multiple broadcast fix.
Turning segment on/off will not reset currentPreset/cause stateChanged.

wled00/fcn_declare.h

@@ -105,7 +105,6 @@ void sendImprovInfoResponse();
 void sendImprovRPCResponse(uint8_t commandId);
 
 //ir.cpp
-//bool decodeIRCustom(uint32_t code);
 void applyRepeatActions();
 byte relativeChange(byte property, int8_t amount, byte lowerBoundary = 0, byte higherBoundary = 0xFF);
 void decodeIR(uint32_t code);
@@ -190,7 +189,7 @@ int16_t loadPlaylist(JsonObject playlistObject, byte presetId = 0);
 void handlePlaylist();
 
 //presets.cpp
-void handlePresets();
+void handlePresets(bool force = false);
 bool applyPreset(byte index, byte callMode = CALL_MODE_DIRECT_CHANGE, bool fromJson = false);
 inline bool applyTemporaryPreset() {return applyPreset(255);};
 void savePreset(byte index, const char* pname = nullptr, JsonObject saveobj = JsonObject());

wled00/json.cpp

@@ -220,13 +220,13 @@ void deserializeSegment(JsonObject elem, byte it, byte presetId)
 //    seg.setOption(SEG_OPTION_FREEZE, false);
   }
   // send UDP if not in preset and something changed that is not just selection
-  //if (!presetId && (seg.differs(prev) & 0x7F)) stateChanged = true;
-  // send UDP if something changed that is not just selection
-  if (seg.differs(prev) & 0x7F) stateChanged = true;
+  // send UDP if something changed that is not just selection or segment power/opacity
+  if ((seg.differs(prev) & 0x7E) && seg.getOption(SEG_OPTION_ON)==prev.getOption(SEG_OPTION_ON)) stateChanged = true;
   return;
 }
 
 // deserializes WLED state (fileDoc points to doc object if called from web server)
+// presetId is non-0 if called from handlePreset()
 bool deserializeState(JsonObject root, byte callMode, byte presetId)
 {
   bool stateResponse = root[F("v")] | false;
@@ -357,7 +357,7 @@ bool deserializeState(JsonObject root, byte callMode, byte presetId)
     ps = presetCycCurr;
     if (getVal(root["ps"], &ps, presetCycMin, presetCycMax)) { //load preset (clears state request!)
       if (ps >= presetCycMin && ps <= presetCycMax) presetCycCurr = ps;
-      applyPreset(ps, callMode, true);
+      applyPreset(ps, callMode, !presetId);  // may clear root object and replace it by preset content if presetId==0
       return stateResponse;
     }
 
@@ -375,8 +375,6 @@ bool deserializeState(JsonObject root, byte callMode, byte presetId)
     //do not notify here, because the first playlist entry will do
     if (root["on"].isNull()) callMode = CALL_MODE_NO_NOTIFY;
     else callMode = CALL_MODE_DIRECT_CHANGE;  // possible bugfix for playlist only containing HTTP API preset FX=~
-  } else {
-    interfaceUpdateCallMode = CALL_MODE_WS_SEND;
   }
 
   stateUpdated(callMode);

wled00/led.cpp

@@ -171,17 +171,14 @@ void updateInterfaces(uint8_t callMode)
       callMode != CALL_MODE_NO_NOTIFY) updateBlynk();
   #endif
   doPublishMqtt = true;
+  interfaceUpdateCallMode = 0; //disable
 }
 
 
 void handleTransitions()
 {
   //handle still pending interface update
-  if (interfaceUpdateCallMode && millis() - lastInterfaceUpdate > INTERFACE_UPDATE_COOLDOWN)
-  {
-    updateInterfaces(interfaceUpdateCallMode);
-    interfaceUpdateCallMode = 0; //disable
-  }
+  if (interfaceUpdateCallMode && millis() - lastInterfaceUpdate > INTERFACE_UPDATE_COOLDOWN) updateInterfaces(interfaceUpdateCallMode);
   if (doPublishMqtt) publishMqtt();
   
   if (transitionActive && transitionDelayTemp > 0)

wled00/presets.cpp

@@ -17,16 +17,41 @@ bool applyPreset(byte index, byte callMode, bool fromJson)
   presetToApply = index;
   callModeToApply = callMode;
   checkPlaylist = fromJson;
+  // the following is needed in case of HTTP JSON API call to return correct state to the caller
+  // fromJson is true in case when deserializeState() was called with presetId==0
+  if (fromJson) handlePresets(true); // force immediate processing
   return true;
 }
 
-void handlePresets()
+void handlePresets(bool force)
 {
-  if (presetToApply == 0 || fileDoc) return; //JSON buffer allocated (apply preset in next cycle) or no preset waiting
+  if (presetToApply == 0 || (fileDoc && !force)) return; // JSON buffer already allocated and not force apply or no preset waiting
 
   JsonObject fdo;
   const char *filename = presetToApply < 255 ? "/presets.json" : "/tmp.json";
 
+  //crude way to determine if this was called by a network request
+  uint8_t core = 1;
+  #ifdef ARDUINO_ARCH_ESP32
+  core = xPortGetCoreID();
+  #endif
+  //only allow use of fileDoc from the core responsible for network requests (AKA HTTP JSON API)
+  //do not use active network request doc from preset called by main loop (playlist, schedule, ...)
+  if (fileDoc && core && force && presetToApply < 255) {
+    // this will overwrite doc with preset content but applyPreset() is the last in such case and content of doc is no longer needed
+    errorFlag = readObjectFromFileUsingId(filename, presetToApply, fileDoc) ? ERR_NONE : ERR_FS_PLOAD;
+    JsonObject fdo = fileDoc->as<JsonObject>();
+    // if we applyPreset from JSON and preset contains "seg" we must unload playlist
+    if (checkPlaylist && !fdo["seg"].isNull()) unloadPlaylist();
+    fdo.remove("ps"); //remove load request for presets to prevent recursive crash
+    deserializeState(fdo, callModeToApply, presetToApply);
+    if (!errorFlag) currentPreset = presetToApply;
+    presetToApply = 0; //clear request for preset
+    callModeToApply = 0;
+    checkPlaylist = false;
+    return;
+  }
+
   // allocate buffer
   DEBUG_PRINTLN(F("Apply preset JSON buffer requested."));
   if (!requestJSONBufferLock(9)) return;  // will also assign fileDoc
@@ -46,8 +71,10 @@ void handlePresets()
   const char* httpwin = fdo["win"];
   if (httpwin) {
     String apireq = "win"; apireq += '&'; // reduce flash string usage
+    apireq += F("IN&"); // interenal call
     apireq += httpwin;
     handleSet(nullptr, apireq, false);
+    setValuesFromFirstSelectedSeg(); // fills legacy values
   } else {
     fdo.remove("ps"); //remove load request for presets to prevent recursive crash
     // if we applyPreset from JSON and preset contains "seg" we must unload playlist

wled00/wled.h

@@ -8,7 +8,7 @@
  */
 
 // version code in format yymmddb (b = daily build)
-#define VERSION 2204112
+#define VERSION 2204161
 
 //uncomment this if you have a "my_config.h" file you'd like to use
 //#define WLED_USE_MY_CONFIG

wled00/ws.cpp

@@ -34,34 +34,32 @@ void wsEvent(AsyncWebSocket * server, AsyncWebSocketClient * client, AwsEventTyp
           client->text(F("pong"));
           return;
         }
-        bool verboseResponse = false;
-        { //scope JsonDocument so it releases its buffer
-          DEBUG_PRINTLN(F("WS JSON receive buffer requested."));
-          if (!requestJSONBufferLock(11)) return;
 
-          DeserializationError error = deserializeJson(doc, data, len);
-          JsonObject root = doc.as<JsonObject>();
-          if (error || root.isNull()) {
-            releaseJSONBufferLock();
-            return;
-          }
-          if (root["v"] && root.size() == 1) {
-            //if the received value is just "{"v":true}", send only to this client
-            verboseResponse = true;
-          } else if (root.containsKey("lv"))
-          {
-            wsLiveClientId = root["lv"] ? client->id() : 0;
-          } else {
-            verboseResponse = deserializeState(root);
-            if (!interfaceUpdateCallMode) {
-              //special case, only on playlist load, avoid sending twice in rapid succession
-              if (millis() - lastInterfaceUpdate > (INTERFACE_UPDATE_COOLDOWN -300)) verboseResponse = false;
-            }
-          }
-          releaseJSONBufferLock(); // will clean fileDoc
+        bool verboseResponse = false;
+        DEBUG_PRINTLN(F("WS JSON receive buffer requested."));
+        if (!requestJSONBufferLock(11)) return;
+
+        DeserializationError error = deserializeJson(doc, data, len);
+        JsonObject root = doc.as<JsonObject>();
+        if (error || root.isNull()) {
+          releaseJSONBufferLock();
+          return;
+        }
+        if (root["v"] && root.size() == 1) {
+          //if the received value is just "{"v":true}", send only to this client
+          verboseResponse = true;
+        } else if (root.containsKey("lv")) {
+          wsLiveClientId = root["lv"] ? client->id() : 0;
+        } else {
+          verboseResponse = deserializeState(root);
+        }
+        releaseJSONBufferLock(); // will clean fileDoc
+
+        // force broadcast in 500ms after upadting client
+        if (verboseResponse) {
+          sendDataWs(client);
+          lastInterfaceUpdate = millis() - (INTERFACE_UPDATE_COOLDOWN -500);
         }
-        //update if it takes longer than 300ms until next "broadcast"
-        if (verboseResponse && (millis() - lastInterfaceUpdate < (INTERFACE_UPDATE_COOLDOWN -300) || !interfaceUpdateCallMode)) sendDataWs(client);
       }
     } else {
       //message is comprised of multiple frames or the frame is split into multiple packets
@@ -99,28 +97,30 @@ void sendDataWs(AsyncWebSocketClient * client)
   if (!ws.count()) return;
   AsyncWebSocketMessageBuffer * buffer;
 
-  { //scope JsonDocument so it releases its buffer
-    DEBUG_PRINTLN(F("WS JSON send buffer requested."));
-    if (!requestJSONBufferLock(12)) return;
+  DEBUG_PRINTLN(F("WS JSON send buffer requested."));
+  if (!requestJSONBufferLock(12)) return;
 
-    JsonObject state = doc.createNestedObject("state");
-    serializeState(state);
-    JsonObject info  = doc.createNestedObject("info");
-    serializeInfo(info);
-    DEBUG_PRINTF("JSON buffer size: %u for WS request.\n", doc.memoryUsage());
-    size_t len = measureJson(doc);
-    size_t heap1 = ESP.getFreeHeap();
-    buffer = ws.makeBuffer(len); // will not allocate correct memory sometimes
-    size_t heap2 = ESP.getFreeHeap();
-    if (!buffer || heap1-heap2<len) {
-      releaseJSONBufferLock();
-      ws.closeAll(1013); //code 1013 = temporary overload, try again later
-      ws.cleanupClients(0); //disconnect all clients to release memory
-      return; //out of memory
-    }
-    serializeJson(doc, (char *)buffer->get(), len +1);
+  JsonObject state = doc.createNestedObject("state");
+  serializeState(state);
+  JsonObject info  = doc.createNestedObject("info");
+  serializeInfo(info);
+
+  DEBUG_PRINTF("JSON buffer size: %u for WS request.\n", doc.memoryUsage());
+  size_t len = measureJson(doc);
+
+  size_t heap1 = ESP.getFreeHeap();
+  buffer = ws.makeBuffer(len); // will not allocate correct memory sometimes
+  size_t heap2 = ESP.getFreeHeap();
+  if (!buffer || heap1-heap2<len) {
     releaseJSONBufferLock();
-  } 
+    ws.closeAll(1013); //code 1013 = temporary overload, try again later
+    ws.cleanupClients(0); //disconnect all clients to release memory
+    return; //out of memory
+  }
+
+  serializeJson(doc, (char *)buffer->get(), len +1);
+  releaseJSONBufferLock();
+
   DEBUG_PRINT(F("Sending WS data "));
   if (client) {
     client->text(buffer);