Добавлен переход на летнее/зимнее время; Добавлен эффект Белый огонь; Исправлены ошибки

libraries/Timezone/examples/Change_TZ_1/Change_TZ_1.ino

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+// Arduino Timezone Library Copyright (C) 2018 by Jack Christensen and
+// licensed under GNU GPL v3.0, https://www.gnu.org/licenses/gpl.html
+//
+// Arduino Timezone Library example sketch.
+// Demonstrates changing timezone "on the fly".
+// Uses a pushbutton switch to change between the four continental US time zones.
+// The current timezone setting is saved in EEPROM so it is remembered if
+// the power is cycled.
+// Tested with Arduino 1.8.5 and an Arduino Uno.
+//
+// Jack Christensen 02Jan2018
+
+#include <avr/eeprom.h>
+#include <JC_Button.h>          // http://github.com/JChristensen/JC_Button
+#include <Streaming.h>          // http://arduiniana.org/libraries/streaming/
+#include <Timezone.h>           // http://github.com/JChristensen/Timezone
+
+const uint8_t BUTTON_PIN(8);    // connect a button from this pin to ground
+Button btn(BUTTON_PIN);
+
+uint8_t tzIndex;            //index to the arrays below
+EEMEM uint8_t ee_tzIndex;   //copy of tzIndex persisted in EEPROM
+const char* dstNames[] = {"EDT", "CDT", "MDT", "PDT"};
+const char* stdNames[] = {"EST", "CST", "MST", "PST"};
+const int dstOffsets[] = {-240, -300, -360, -420};
+const int stdOffsets[] = {-300, -360, -420, -480};
+
+TimeChangeRule dstRule = {"EDT", Second, Sun, Mar, 2, -240};
+TimeChangeRule stdRule = {"EST", First, Sun, Nov, 2, -300};
+Timezone tz(dstRule, stdRule);
+
+void setup()
+{
+    // set the system time to UTC
+    // warning: assumes that compileTime() returns US EST
+    // adjust the following line accordingly if you're in another time zone
+    setTime(compileTime() + 300 * 60);
+
+    // get tzIndex from eeprom and ensure that it's valid
+    tzIndex = eeprom_read_byte( &ee_tzIndex );
+    if ( tzIndex >= sizeof(stdOffsets) / sizeof(stdOffsets[0]) )
+    {
+        tzIndex = 0;
+        eeprom_write_byte( &ee_tzIndex, tzIndex);
+    }
+
+    btn.begin();
+    Serial.begin(115200);
+    changeTZ();
+}
+
+void loop()
+{
+    // print the time if it's changed
+    static time_t tLast;
+    time_t t = now();
+    if (t != tLast)
+    {
+        tLast = t;
+        printDateTime(t);
+        Serial << " UTC  ";
+        TimeChangeRule* tcr;    //pointer to current time change rule, used to get TZ abbrev
+        printDateTime(tz.toLocal(t, &tcr));
+        Serial << " " << tcr -> abbrev;
+        Serial << endl;
+    }
+
+    // change the time zone if button pressed
+    btn.read();
+    if (btn.wasPressed())
+    {
+        if ( ++tzIndex >= sizeof(stdOffsets) / sizeof(stdOffsets[0]) ) tzIndex = 0;
+        changeTZ();
+    }
+}
+
+void changeTZ()
+{
+    Serial << "tzIndex " << tzIndex << endl;
+    eeprom_update_byte( &ee_tzIndex, tzIndex );
+    dstRule.offset = dstOffsets[tzIndex];
+    stdRule.offset = stdOffsets[tzIndex];
+    strcpy(dstRule.abbrev, dstNames[tzIndex]);
+    strcpy(stdRule.abbrev, stdNames[tzIndex]);
+    tz.setRules(dstRule, stdRule);
+}
+
+void printDateTime(time_t t)
+{
+    Serial << ((day(t)<10) ? "0" : "") << _DEC(day(t));
+    Serial << monthShortStr(month(t)) << _DEC(year(t)) << ' ';
+    Serial << ((hour(t)<10) ? "0" : "") << _DEC(hour(t)) << ':';
+    Serial << ((minute(t)<10) ? "0" : "") << _DEC(minute(t)) << ':';
+    Serial << ((second(t)<10) ? "0" : "") << _DEC(second(t));
+}
+
+// function to return the compile date and time as a time_t value
+time_t compileTime()
+{
+    const time_t FUDGE(10);    //fudge factor to allow for upload time, etc. (seconds, YMMV)
+    const char *compDate = __DATE__, *compTime = __TIME__, *months = "JanFebMarAprMayJunJulAugSepOctNovDec";
+    char compMon[3], *m;
+
+    strncpy(compMon, compDate, 3);
+    compMon[3] = '\0';
+    m = strstr(months, compMon);
+
+    tmElements_t tm;
+    tm.Month = ((m - months) / 3 + 1);
+    tm.Day = atoi(compDate + 4);
+    tm.Year = atoi(compDate + 7) - 1970;
+    tm.Hour = atoi(compTime);
+    tm.Minute = atoi(compTime + 3);
+    tm.Second = atoi(compTime + 6);
+
+    time_t t = makeTime(tm);
+    return t + FUDGE;        //add fudge factor to allow for compile time
+}
+