Enable revert state mode

code/espurna/config/general.h

@@ -14,6 +14,7 @@
 #define RELAY_MODE_OFF          0
 #define RELAY_MODE_ON           1
 #define RELAY_MODE_SAME         2
+#define RELAY_MODE_TOOGLE       3
 
 #define RELAY_SYNC_ANY          0
 #define RELAY_SYNC_NONE_OR_ONE  1

code/espurna/relay.ino

@@ -161,14 +161,17 @@ void relaySave() {
     EEPROM.commit();
 }
 
-void relayRetrieve() {
+void relayRetrieve(bool invert) {
     recursive = true;
     unsigned char bit = 1;
-    unsigned char mask = EEPROM.read(0);
+    unsigned char mask = invert ? ~EEPROM.read(0) : EEPROM.read(0);
     for (unsigned int i=0; i < _relays.size(); i++) {
         relayStatus(i, ((mask & bit) == bit));
         bit += bit;
     }
+    if (invert) {
+      relaySave();
+    }
     recursive = false;
 }
 
@@ -254,7 +257,8 @@ void relaySetup() {
         if (relayMode == RELAY_MODE_ON) relayStatus(i, true);
     }
 
-    if (relayMode == RELAY_MODE_SAME) relayRetrieve();
+    if (relayMode == RELAY_MODE_SAME) relayRetrieve(false);
+    if (relayMode == RELAY_MODE_TOOGLE) relayRetrieve(true);
 
     mqttRegister(relayMQTTCallback);
 

code/html/index.html

@@ -201,6 +201,7 @@
                                             <option value="0">Always OFF</a>
                                             <option value="1">Always ON</a>
                                             <option value="2">Same as before</a>
+                                            <option value="3">Toogle before</a>
                                         </select>
                                     </div>
                                     <div class="pure-u-0 pure-u-md-1-4">&nbsp;</div>