Support for USA DST calculations (#664)

code/espurna/config/general.h

@@ -842,6 +842,7 @@ PROGMEM const char* const custom_reset_string[] = {
 #define NTP_SYNC_INTERVAL       60              // NTP initial check every minute
 #define NTP_UPDATE_INTERVAL     1800            // NTP check every 30 minutes
 #define NTP_START_DELAY         1000            // Delay NTP start 1 second
+#define NTP_DST_REGION          0               // 0 for Europe, 1 for USA (defined in NtpClientLib)
 
 // -----------------------------------------------------------------------------
 // ALEXA

code/espurna/ntp.ino

@@ -27,6 +27,7 @@ void _ntpWebSocketOnSend(JsonObject& root) {
     root["ntpServer"] = getSetting("ntpServer", NTP_SERVER);
     root["ntpOffset"] = getSetting("ntpOffset", NTP_TIME_OFFSET).toInt();
     root["ntpDST"] = getSetting("ntpDST", NTP_DAY_LIGHT).toInt() == 1;
+    root["ntpRegion"] = getSetting("ntpRegion", NTP_DST_REGION).toInt();
     if (ntpSynced()) root["now"] = now();
 }
 
@@ -66,6 +67,9 @@ void _ntpConfigure() {
         NTP.setNtpServerName(server);
     }
 
+    uint8_t dst_region = getSetting("ntpRegion", NTP_DST_REGION).toInt();
+    NTP.setDSTZone(dst_region);
+
 }
 
 void _ntpUpdate() {

code/html/index.html

@@ -761,6 +761,14 @@
                                     <div class="pure-u-1 pure-u-lg-1-4"><input type="checkbox" name="ntpDST" /></div>
                                 </div>
 
+                                <div class="pure-g">
+                                    <label class="pure-u-1 pure-u-lg-1-4">DST Region</label>
+                                    <select class="pure-u-1 pure-u-lg-1-4" name="ntpRegion">
+                                        <option value="0">Europe</option>
+                                        <option value="1">USA</option>
+                                    </select>
+                                </div>
+
                             </fieldset>
                         </div>
 

code/platformio.ini

@@ -27,7 +27,7 @@ lib_deps =
     https://github.com/madpilot/mDNSResolver#4cfcda1
     https://github.com/xoseperez/my92xx#3.0.1
     https://bitbucket.org/xoseperez/nofuss.git#0.2.5
-    https://github.com/gmag11/NtpClient.git#10ece38
+    https://github.com/gmag11/NtpClient.git#28af3a5
     OneWire
     PMS Library
     PZEM004T