Added inching support

code/html/index.html

@@ -189,7 +189,7 @@
                                 <div class="pure-g module module-multirelay">
                                     <label class="pure-u-1 pure-u-md-1-4" for="relaySync">Relay sync mode</label>
                                     <div class="pure-u-1 pure-u-md-3-4">
-                                        <select name="relaySync" class="pure-u-1-2" tabindex="2">
+                                        <select name="relaySync" class="pure-u-1-2" tabindex="3">
                                             <option value="0">No synchonisation</a>
                                             <option value="1">Zero or one relays active</a>
                                             <option value="2">One and just one relay active</a>
@@ -200,9 +200,29 @@
                                     <div class="pure-u-1 pure-u-md-3-4 hint">Define how the different relays should be synchronized.</div>
                                 </div>
 
+                                <div class="pure-g">
+                                    <label class="pure-u-1 pure-u-md-1-4" for="relayInch">Relay inching mode</label>
+                                    <div class="pure-u-1 pure-u-md-3-4">
+                                        <select name="relayInch" class="pure-u-1-2" tabindex="4">
+                                            <option value="0">No inching</a>
+                                            <option value="1">Normally OFF (stays on for a brief interval)</a>
+                                            <option value="2">Normally ON (stays off for a brief interval)</a>
+                                        </select>
+                                    </div>
+                                    <div class="pure-u-0 pure-u-md-1-4">&nbsp;</div>
+                                    <div class="pure-u-1 pure-u-md-3-4 hint">When inching enable the relay will automatically switch back to its normal state after the inching time (below).</div>
+                                </div>
+
+                                <div class="pure-g">
+                                    <label class="pure-u-1 pure-u-md-1-4" for="relayInchTime">Relay inching time</label>
+                                    <input name="relayInchTime" class="pure-u-1 pure-u-md-3-4" type="number" min="1" tabindex="5" />
+                                    <div class="pure-u-0 pure-u-md-1-4">&nbsp;</div>
+                                    <div class="pure-u-1 pure-u-md-3-4 hint">Inching time in seconds.</div>
+                                </div>
+
                                 <div class="pure-g module module-fauxmo">
                                     <div class="pure-u-1 pure-u-sm-1-4"><label for="fauxmoEnabled">Enable WeMo emulation</label></div>
-                                    <div class="pure-u-1 pure-u-sm-1-4"><input type="checkbox" name="fauxmoEnabled" /></div>
+                                    <div class="pure-u-1 pure-u-sm-1-4"><input type="checkbox" name="fauxmoEnabled" tabindex="6" /></div>
                                 </div>
 
                             </fieldset>

code/src/config/general.h

@@ -21,12 +21,22 @@
 #define RELAY_SYNC_ONE          2
 #define RELAY_SYNC_SAME         3
 
+#define RELAY_INCHING_NONE      0
+#define RELAY_INCHING_OFF       1
+#define RELAY_INCHING_ON        2
+
+// Inching time in seconds
+#define RELAY_INCHING_TIME      1
+
 // 0 means OFF, 1 ON and 2 whatever was before
 #define RELAY_MODE         		RELAY_MODE_OFF
 
 // 0 means ANY, 1 zero or one and 2 one and only one
 #define RELAY_SYNC         		RELAY_SYNC_ANY
 
+// 0 means no inching, 1 means normally off, 2 normally on
+#define RELAY_INCHING     		RELAY_INCHING_NONE
+
 // -----------------------------------------------------------------------------
 // WIFI & WEB
 // -----------------------------------------------------------------------------

code/src/relay.ino

@@ -8,6 +8,7 @@ Copyright (C) 2016 by Xose Pérez <xose dot perez at gmail dot com>
 */
 
 #include <EEPROM.h>
+#include <Ticker.h>
 #include <ArduinoJson.h>
 #include <vector>
 
@@ -16,6 +17,7 @@ bool recursive = false;
 #ifdef SONOFF_DUAL
     unsigned char dualRelayStatus = 0;
 #endif
+Ticker inching;
 
 // -----------------------------------------------------------------------------
 // RELAY
@@ -58,6 +60,28 @@ bool relayStatus(unsigned char id) {
     #endif
 }
 
+void relayInchingBack(unsigned char id) {
+    relayToggle(id);
+    inching.detach();
+}
+
+void relayInching(unsigned char id) {
+
+    byte relayInch = getSetting("relayInch", String(RELAY_INCHING)).toInt();
+    if (relayInch == RELAY_INCHING_NONE) return;
+
+    bool status = relayStatus(id);
+    if ((relayInch == RELAY_INCHING_ON) & (status)) return;
+    if ((relayInch == RELAY_INCHING_OFF) & (!status)) return;
+
+    inching.attach(
+        getSetting("relayInchTime", String(RELAY_INCHING_TIME)).toInt(),
+        relayInchingBack,
+        id
+    );
+
+}
+
 bool relayStatus(unsigned char id, bool status, bool report) {
 
     bool changed = false;
@@ -82,6 +106,7 @@ bool relayStatus(unsigned char id, bool status, bool report) {
         #endif
 
         if (!recursive) {
+            relayInching(id);
             relaySync(id);
             relaySave();
         }

code/src/web.ino

@@ -234,6 +234,8 @@ void _wsStart(uint32_t client_id) {
         relay.add(relayStatus(relayID));
     }
     root["relayMode"] = getSetting("relayMode", String(RELAY_MODE));
+    root["relayInch"] = getSetting("relayInch", String(RELAY_INCHING));
+    root["relayInchTime"] = getSetting("relayInchTime", String(RELAY_INCHING_TIME));
     if (relayCount() > 1) {
         root["multirelayVisible"] = 1;
         root["relaySync"] = getSetting("relaySync", String(RELAY_SYNC));
@@ -502,7 +504,7 @@ void webSetup() {
     char lastModified[50];
     sprintf(lastModified, "%s %s GMT", __DATE__, __TIME__);
     server.serveStatic("/", SPIFFS, "/").setLastModified(lastModified);
-    
+
     // 404
     server.onNotFound([](AsyncWebServerRequest *request){
         request->send(404);