Change light transition time via MQTT or API (#1412)

code/espurna/config/general.h

@@ -773,6 +773,7 @@
 #define MQTT_TOPIC_BRIGHTNESS       "brightness"
 #define MQTT_TOPIC_MIRED            "mired"
 #define MQTT_TOPIC_KELVIN           "kelvin"
+#define MQTT_TOPIC_TRANSITION       "transition"
 
 #define MQTT_STATUS_ONLINE          "1"         // Value for the device ON message
 #define MQTT_STATUS_OFFLINE         "0"         // Value for the device OFF message (will)

code/espurna/light.ino

@@ -504,6 +504,7 @@ void _lightMQTTCallback(unsigned int type, const char * topic, const char * payl
             mqttSubscribe(MQTT_TOPIC_KELVIN);
             mqttSubscribe(MQTT_TOPIC_COLOR_RGB);
             mqttSubscribe(MQTT_TOPIC_COLOR_HSV);
+            mqttSubscribe(MQTT_TOPIC_TRANSITION);
         }
 
         // Group color
@@ -561,6 +562,12 @@ void _lightMQTTCallback(unsigned int type, const char * topic, const char * payl
             return;
         }
 
+        // Transitions
+        if (t.equals(MQTT_TOPIC_TRANSITION)) {
+            lightTransitionTime(atol(payload));
+            return;
+        }
+
         // Channel
         if (t.startsWith(MQTT_TOPIC_CHANNEL)) {
             unsigned int channelID = t.substring(strlen(MQTT_TOPIC_CHANNEL)+1).toInt();
@@ -658,7 +665,7 @@ void lightUpdate(bool save, bool forward, bool group_forward) {
     // Update channels
     for (unsigned int i=0; i < _light_channel.size(); i++) {
         _light_channel[i].target = _light_state && _light_channel[i].state ? _light_channel[i].value : 0;
-        DEBUG_MSG_P("[LIGHT] Channel #%u target value: %u\n", i, _light_channel[i].target);
+        //DEBUG_MSG_P("[LIGHT] Channel #%u target value: %u\n", i, _light_channel[i].target);
     }
 
     // Configure color transition
@@ -774,6 +781,26 @@ void lightBrightnessStep(int steps) {
     lightBrightness(_light_brightness + steps * LIGHT_STEP);
 }
 
+unsigned long lightTransitionTime() {
+    if (_light_use_transitions) {
+        return _light_transition_time;
+    } else {
+        return 0;
+    }
+}
+
+void lightTransitionTime(unsigned long m) {
+    if (0 == m) {
+        _light_use_transitions = false;
+    } else {
+        _light_use_transitions = true;
+        _light_transition_time = m;
+    }
+    setSetting("useTransitions", _light_use_transitions);
+    setSetting("lightTime", _light_transition_time);
+    saveSettings();
+}
+
 // -----------------------------------------------------------------------------
 // SETUP
 // -----------------------------------------------------------------------------
@@ -918,6 +945,15 @@ void _lightAPISetup() {
 
     }
 
+    apiRegister(MQTT_TOPIC_TRANSITION,
+        [](char * buffer, size_t len) {
+            snprintf_P(buffer, len, PSTR("%d"), lightTransitionTime());
+        },
+        [](const char * payload) {
+            lightTransitionTime(atol(payload));
+        }
+    );
+
     apiRegister(MQTT_TOPIC_BRIGHTNESS,
         [](char * buffer, size_t len) {
             snprintf_P(buffer, len, PSTR("%d"), _light_brightness);