markcheno · February 27, 2023 22:43 · Jan 14, 2022 · Jan 14, 2022 · Jan 14, 2022 · Jan 14, 2022
diff --git a/NTP_System_Time.ino b/NTP_System_Time.ino
@@ -201,6 +201,19 @@ void loop()
     //Code to do something... 
 
   }
+
+  //DOW = 0 Sunday
+  //DOW  0-6   HOUR 0-23  MINUTE 0-59   SECOND 0-59
+  if((DOW == 0) && (HOUR == 0) && (MINUTE == 0) && (SECOND == 0))  //Event 4
+  { 
+
+    delay(1000);
+
+    Serial.println("Event 4 occurs every Sunday");
+
+    //Code to do something... 
+
+  }
 
   getDateTime();
 

diff --git a/NTP_System_Time.ino b/NTP_System_Time.ino
@@ -54,6 +54,17 @@
 
   }
   
+  //DOW = 0 Sunday
+  //DOW  0-6   HOUR 0-23  MINUTE 0-59   SECOND 0-59
+  if((DOW == 0) && (HOUR == 0) && (MINUTE == 0) && (SECOND == 0))  //Event 4
+  { 
+
+    delay(1000);
+    
+    Serial.println("Event 4 occurs every Sunday");
+
+  }
+  
   "%" Arithmetic operator reference:  https://www.arduino.cc/reference/en/language/structure/arithmetic-operators/remainder/
 
 */ 

diff --git a/NTP_System_Time.ino b/NTP_System_Time.ino
@@ -53,6 +53,8 @@
     Serial.println("This event occurs every 1 minute and 0 seconds");  
 
   }
+  
+  "%" Arithmetic operator reference:  https://www.arduino.cc/reference/en/language/structure/arithmetic-operators/remainder/
 
 */ 
 

diff --git a/NTP_System_Time.ino b/NTP_System_Time.ino
@@ -59,8 +59,8 @@
 //****************************************************************************
 
 // Replace with your network details
-const char* ssid = "R2D2";
-const char* password = "sissy4357";
+const char* ssid = "yourSSID";
+const char* password = "yourPASSWORD";
 
 //setting the addresses
 IPAddress ip(10, 0, 0, 6);

diff --git a/NTP_System_Time.ino b/NTP_System_Time.ino
@@ -0,0 +1,218 @@
+
+//  NTP_System_Time.ino
+//schufti  --of ESP8266.com Forum provided source for NTP time.
+//Developer of code not given
+
+#include <WiFi.h>
+#include <WiFiUdp.h>
+#include <sys/time.h>                                                                                    
+#include <time.h>
+
+/*
+  Found this reference on setting TZ: http://www.gnu.org/software/libc/manual/html_node/TZ-Variable.html
+  Here are some example TZ values, including the appropriate Daylight Saving Time and its dates of applicability. 
+  In North American Eastern Standard Time (EST) and Eastern Daylight Time (EDT), the normal offset from UTC is 5 hours; 
+  since this is west of the prime meridian, the sign is positive. Summer time begins on March's second Sunday at 
+  2:00am, and ends on November's first Sunday at 2:00am.
+  
+*/
+
+#define TZ "EST+5EDT,M3.2.0/2,M11.1.0/2"
+
+//****************************************************************************
+/*
+
+  Need an event scheduler?  "if" conditional statements can be used to schedule events; place in void loop(), for example:
+
+  getDateTime();  
+  
+  if((HOUR % 1 == 0) && (MINUTE == 0) && (SECOND == 0))  //Event 1
+  {
+
+    delay(1000);//wait for next second
+
+    Serial.println("This event occurs every hour on the hour.");
+
+  }
+
+  if((MINUTE % 15 == 0) && (SECOND == 0))  //Event 2
+  {
+
+    delay(1000);  //wait for next second
+    
+    Serial.println("This event occurs every 15 minutes and 0 seconds")
+
+
+  }
+
+  if((MINUTE % 1== 0) && (SECOND == 0))  //Event 3
+  {
+
+    delay(1000);  //wait for next second
+    
+    Serial.println("This event occurs every 1 minute and 0 seconds");  
+
+  }
+
+*/ 
+
+//****************************************************************************
+
+// Replace with your network details
+const char* ssid = "R2D2";
+const char* password = "sissy4357";
+
+//setting the addresses
+IPAddress ip(10, 0, 0, 6);
+IPAddress gateway(10, 0, 0, 1);
+IPAddress subnet(255, 255, 255, 0);
+IPAddress primaryDNS(8, 8, 8, 8);
+IPAddress secondaryDNS(8, 8, 4, 4);
+
+WiFiClient client;
+
+///Are we currently connected?
+boolean connected = false;
+
+WiFiUDP udp;
+// local port to listen for UDP packets
+//Settings pertain to NTP time servers
+const int udpPort = 1337;
+//NTP Time Servers
+const char * udpAddress1 = "us.pool.ntp.org";
+const char * udpAddress2 = "time.nist.gov";
+char incomingPacket[255];
+char replyPacket[] = "Hi there! Got the message :-)";
+
+int DOW, MONTH, DATE, YEAR, HOUR, MINUTE, SECOND;
+//String = (Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday};
+String weekDay;
+
+int lc = 0;
+time_t tnow;
+
+char strftime_buf[64];
+
+String dtStamp(strftime_buf);
+
+void setup(void)
+{
+  Serial.begin(115200);
+
+  while (!Serial);
+
+  WiFi.persistent( false ); // for time saving
+
+  // Connecting to local WiFi network
+  Serial.println();
+  Serial.print("Connecting to ");
+  Serial.println(ssid);
+  WiFi.mode(WIFI_STA);
+  WiFi.config(ip, gateway, subnet, primaryDNS, secondaryDNS);
+  WiFi.begin(ssid, password);
+  delay(10);
+
+  while (WiFi.status() != WL_CONNECTED)
+  {
+    Serial.print(".");
+    delay(1000);
+  }
+
+  Serial.println("\nWiFi connected");
+  Serial.print("MAC: ");
+  Serial.println(WiFi.macAddress());
+  Serial.print("Server IP:  ");
+  Serial.println(WiFi.localIP());
+
+  //set up TimeZone in local environment
+  configTime(0, 0, udpAddress1, udpAddress2);
+  setenv("TZ", "EST+5EDT,M3.2.0/2,M11.1.0/2", 3);   // this sets TZ to Indianapolis, Indiana
+  tzset();
+
+  Serial.print("wait for first valid timestamp ");
+
+  while (time(nullptr) < 100000ul)
+  {
+    Serial.print(".");
+    delay(5000);
+  }
+
+  Serial.println(" time synced");
+  Serial.println("");
+
+}
+
+void loop()
+{
+
+  //udp only send data when connected
+  if (connected)
+  {
+    //Send a packet
+    udp.beginPacket(udpAddress1, udpPort);
+    udp.printf("Seconds since boot: %u", millis() / 1000);
+    udp.endPacket();
+  }
+
+  getDateTime();
+
+  if((HOUR % 1 == 0) && (MINUTE == 0) && (SECOND == 0))  //Event 1
+  {
+
+    delay(1000);//wait for next second
+
+    Serial.println("Event 1 occurs every hour on the hour."); 
+
+    //Code to do something...  
+
+  }
+
+  if((MINUTE % 15 == 0) && (SECOND == 0))  //Event 2
+  {
+
+    delay(1000);  //wait for next second
+
+    Serial.println("Event 2 occurs every 15 minutes and 0 seconds"); 
+
+    //Code to do something...  
+
+  }
+
+  if((MINUTE % 1== 0) && (SECOND == 0))  //Event 3
+  {
+
+    delay(1000);  //wait for next second
+
+    Serial.println("Event 3 occurs every 1 minute and 0 seconds"); 
+
+    //Code to do something... 
+
+  }
+
+  getDateTime();
+
+  Serial.println(dtStamp);
+
+  delay(1000);
+
+}
+
+String getDateTime()
+{
+  struct tm *ti;
+
+  tnow = time(nullptr) + 1;
+  ti = localtime(&tnow);
+  DOW = ti->tm_wday;
+  YEAR = ti->tm_year + 1900;
+  MONTH = ti->tm_mon + 1;
+  DATE = ti->tm_mday;
+  HOUR  = ti->tm_hour;
+  MINUTE  = ti->tm_min;
+  SECOND = ti->tm_sec;
+
+  strftime(strftime_buf, sizeof(strftime_buf), "%a , %m/%d/%Y , %H:%M:%S %Z", localtime(&tnow));
+  dtStamp = strftime_buf;
+  return (dtStamp);
+
+}
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