Relay MQTT group sync mode setting

code/espurna/config/types.h

@@ -96,6 +96,10 @@
 #define RELAY_PROVIDER_RFBRIDGE     3
 #define RELAY_PROVIDER_STM          4
 
+#define RELAY_GROUP_SYNC_NORMAL      0
+#define RELAY_GROUP_SYNC_INVERSE     1
+#define RELAY_GROUP_SYNC_RECEIVEONLY 2
+
 //------------------------------------------------------------------------------
 // UDP SYSLOG
 //------------------------------------------------------------------------------

code/espurna/relay.ino

@@ -630,7 +630,7 @@ void _relayWebSocketSendRelay(unsigned char i) {
     line["pulse_ms"] = _relays[i].pulse_ms / 1000.0;
     #if MQTT_SUPPORT
         line["group"] = getSetting("mqttGroup", i, "");
-        line["group_inv"] = getSetting("mqttGroupInv", i, 0).toInt();
+        line["group_sync"] = getSetting("mqttGroupSync", i, RELAY_GROUP_SYNC_NORMAL).toInt();
         line["on_disc"] = getSetting("relayOnDisc", i, 0).toInt();
     #endif
 
@@ -794,6 +794,18 @@ void relaySetupAPI() {
 
 #if MQTT_SUPPORT
 
+void _relayMQTTGroup(unsigned char id) {
+    String topic = getSetting("mqttGroup", id, "");
+    if (!topic.length()) return;
+
+    unsigned char mode = getSetting("mqttGroupSync", id, RELAY_GROUP_SYNC_NORMAL).toInt();
+    if (mode == RELAY_GROUP_SYNC_RECEIVEONLY) return;
+
+    bool status = relayStatus(id);
+    if (mode == RELAY_GROUP_SYNC_INVERSE) status = !status;
+    mqttSendRaw(topic.c_str(), status ? RELAY_MQTT_ON : RELAY_MQTT_OFF);
+}
+
 void relayMQTT(unsigned char id) {
 
     if (id >= _relays.size()) return;
@@ -807,12 +819,7 @@ void relayMQTT(unsigned char id) {
     // Check group topic
     if (_relays[id].group_report) {
         _relays[id].group_report = false;
-        String t = getSetting("mqttGroup", id, "");
-        if (t.length() > 0) {
-            bool status = relayStatus(id);
-            if (getSetting("mqttGroupInv", id, 0).toInt() == 1) status = !status;
-            mqttSendRaw(t.c_str(), status ? RELAY_MQTT_ON : RELAY_MQTT_OFF);
-        }
+        _relayMQTTGroup(id);
     }
 
     // Send speed for IFAN02
@@ -939,7 +946,7 @@ void relayMQTTCallback(unsigned int type, const char * topic, const char * paylo
                 if (value == 0xFF) return;
 
                 if (value < 2) {
-                    if (getSetting("mqttGroupInv", i, 0).toInt() == 1) {
+                    if (getSetting("mqttGroupSync", i, RELAY_GROUP_SYNC_NORMAL).toInt() == RELAY_GROUP_SYNC_INVERSE) {
                         value = 1 - value;
                     }
                 }

code/html/custom.js

@@ -246,7 +246,7 @@ function addValue(data, name, value) {
         "ssid", "pass", "gw", "mask", "ip", "dns",
         "schEnabled", "schSwitch","schAction","schType","schHour","schMinute","schWDs","schUTC",
         "relayBoot", "relayPulse", "relayTime",
-        "mqttGroup", "mqttGroupInv", "relayOnDisc",
+        "mqttGroup", "mqttGroupSync", "relayOnDisc",
         "dczRelayIdx", "dczMagnitude",
         "tspkRelay", "tspkMagnitude",
         "ledMode",
@@ -951,7 +951,7 @@ function initRelayConfig(data) {
         $("select[name='relayPulse']", line).val(relay.pulse);
         $("input[name='relayTime']", line).val(relay.pulse_ms);
         $("input[name='mqttGroup']", line).val(relay.group);
-        $("select[name='mqttGroupInv']", line).val(relay.group_inv);
+        $("select[name='mqttGroupSync']", line).val(relay.group_sync);
         $("select[name='relayOnDisc']", line).val(relay.on_disc);
         line.appendTo("#relayConfig");
 

code/html/index.html

@@ -1631,9 +1631,10 @@
             </div>
             <div class="pure-g module module-mqtt">
                 <div class="pure-u-1 pure-u-lg-1-4"><label>MQTT group sync</label></div>
-                <select class="pure-u-1 pure-u-lg-3-4" name="mqttGroupInv">
+                <select class="pure-u-1 pure-u-lg-3-4" name="mqttGroupSync">
                     <option value="0">Same</option>
                     <option value="1">Inverse</option>
+                    <option value="2">Receive Only</option>
                 </select>
             </div>
             <div class="pure-g module module-mqtt">